Hardware and Installation Manual
Solar Inverter - HEC & HEC+ Series v2 Hardware and Installation Manual Outdoor Modular Solar Inverter –HEC & HEC+ Series v2 Hardware and Installation Manual Edition: June 2014 FSMTHW03DI Rev. D FREESUN HEC & HEC+ SERIES POWER ELECTRONICS About this guide PURPOSE This manual contains important instructions for the installation and maintenance of Power Electronics FREESUN HEC and HEC+ inverters. INTENDED USERS This manual is intended for qualified customers who will install, operate and maintain Power Electronics FREESUN HEC inverters. Only trained electricians approved by the responsible energy supply company may install and commission the inverters. The instructions assume that the installer is familiar with electrical installation rules and regulations. REFERENCE MANUALS The following reference guides are available for the Freesun Inverters: Freesun Programming and Software Manual. Freesun Hardware and Installation Manual. POWER ELECTRONICS CONTACT INFORMATION Power Electronics España, S.L. St/ Leonardo da Vinci, 24 – 26 Parque Tecnológico 46980 Paterna (Valencia) SPAIN Sales: (+34) 96 136 65 57 Fax: (+34) 96 131 82 01 Email: [email protected] Website: www.power-electronics.com 2 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS SAFETY SYMBOLS Always follow safety instructions to prevent accidents and potential hazards from occurring. WARNINGS IN THIS DOCUMENT WARNING CAUTION The warning symbol indicates conditions or actions that could result in personal injury or death. The Caution symbol identifies conditions or actions that could result in damage to the inverter or equipment. Particular attention should be given because dangerous voltage may be present. Maintenance operation should be done by qualified personnel. SAFETY SYMBOLS 3 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS Revisions Date Revision Description 21 / 05 / 2012 10 / 04 / 2013 16 / 12 / 2013 A B C 27 / 06 / 2014 D First Edition Technical characteristics and declaration of conformity updating. Inverter v0.1 & v0.2. Transport, ventilation, dimensions, installation and connection. Inverter v2. Transport, ventilation, dimensions, Installation, technical characteristics and connection. The equipment and technical documentation are periodically updated. Power Electronics reserves the right to modify all or part of the contents of this manual without previous notice. To consult the most updated information of this product you might access through our website www.power-electronics.com where the latest version of this manual can be downloaded. 4 POWER ELECTRONICS FREESUN HEC & HEC+ SERIES INDEX SAFETY INSTRUCTIONS ........................................................................................................... 7 1. INTRODUCTION .................................................................................................................... 14 2. CONFIGURATION TABLE & STANDARD RATINGS .......................................................... 2.1 Configuration Table ...................................................................................................... 2.2 Standard ratings ........................................................................................................... 15 15 16 3. TECHNICAL CHARACTERISTICS ....................................................................................... 3.1 Freesun HEC technical characteristics......................................................................... 3.2 Operational Diagram .................................................................................................... 3.3 Efficiency curves .......................................................................................................... 17 17 20 21 4. DIMENSIONS......................................................................................................................... 4.1 HEC Series ................................................................................................................. 4.2 HEC+ Series ............................................................................................................... 22 22 23 5. HANDLING, TRANSPORTATION AND INSTALLATION ..................................................... 5.1 Environmental ratings................................................................................................... 5.2 Reception and Storage................................................................................................. 5.3 Handling and Transportation ........................................................................................ 5.4 Installations requirements ............................................................................................ 5.5 Cooling System ............................................................................................................ 5.6 Suggested Foundations ............................................................................................... 5.7 EMC Emissions/Immunity and noise levels .................................................................. 25 25 25 25 26 26 28 30 6. WIRING ACCESS AND CONNECTIONS .............................................................................. 6.1 Ground connection ....................................................................................................... 6.2 DC connection.............................................................................................................. 6.3 AC connections ............................................................................................................ 6.4 Overvoltage protections ............................................................................................... 6.5 Ground Fault protections .............................................................................................. 6.6 Main Circuit Protections ............................................................................................... 6.7 Auxiliary Power source ................................................................................................. 6.8 External Control Connections....................................................................................... 6.9 Control connection ....................................................................................................... 31 31 32 35 37 38 38 39 39 39 7. COMMISSIONING ................................................................................................................. 7.1 Initial Conditions ........................................................................................................... 7.2 First Time Switch On .................................................................................................... 7.3 Switch Off ..................................................................................................................... 41 41 41 43 8. PREVENTIVE MAINTENANCE ............................................................................................. 44 9. ACCESSORIES ..................................................................................................................... 9.1 Freesun Data Center ................................................................................................... 9.2 Power Control Interface................................................................................................ 9.3 String Supervisor SFS16/SFS24/SFS32 ...................................................................... 9.4 Disconnecting Unit ....................................................................................................... 46 46 46 46 47 DECLARATION OF CONFORMITY CE ...................................................................................... 49 INDEX 5 FREESUN HEC & HEC+ SERIES 6 INDEX POWER ELECTRONICS POWER ELECTRONICS FREESUN HEC & HEC+ SERIES SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions for FREESUN HEC and HEC+ by Power Electronics that shall be followed during installation and maintenance of the solar inverter. IMPORTANT! Read this manual carefully to maximize the performance of this product and to ensure its safe use and installation. In order to properly use the FREESUN inverter, follow all instructions described in the installation manual referred to transport, installation, electrical connection and commissioning of the equipment. Power Electronics accepts no responsibility or liability for any and all damage resulting from inappropriate use of the equipment. The information contained in the installation guide must be observed when installing the inverter. WARNING The Freesun inverter system presents a SHOCK HAZARD. Read and retain the Installation Manual for future reference. Before installing the Freesun inverter, read all instructions, cautionary markings and other appropriate sections of this manual. Failure to follow these warnings could result in severe shock or even death. Exercise extreme caution at all times to prevent possible accidents. These instructions are not meant to cover every safety situation nor replace any local or site specific safety procedure. The information in this section is intended as a supplement to local or site specific procedures. Power Electronics does not assume responsibility for the compliance or noncompliance to any code, national or local for the proper installation of the Freesun inverter. A potential for personal injury and/or equipment damage exists if electrical codes and these instructions are not followed. CAUTION Adhere to local site regulation. Perform all electrical work in accordance with local, national and/or international electrical codes. Use insulate tools to reduce the chance of short-circuits while working with the equipment. Keep all doors closed during equipment operation. Always follow proper lockout/tagout procedures. SAFETY INSTRUCTIONS 7 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS PERSONAL PROTECTION EQUIPMENT (PPE) REQUIREMENTS PPE is required for repair and maintenance of a Freesun inverter. PPE includes but is not limited to: Hard Hat. Safety Glasses. 100% cotton, long pants (no shorts, no synthetic materials). Electrical Hazard (EH) rated safety shoes. Leather work gloves. FR long sleeve shirt, no synthetic materials. Ear protection. OPERATOR SAFETY CAUTION The inverter operates at a high voltage (1,000Vdc maximum). Do not touch the DC input terminals or cables. Touching the DC terminals may result in personal injury or death. The system has sufficient energy to sustain an arc flash. De-energize the equipment prior to any maintenance procedure. Always wear Personal Protective Equipment (PPE) while maintain equipment that is exposed and energized. Always use insulated tools. Always follow proper lockout/tagout procedures. Operating or maintaining energized equipment without appropriate PPE and insulated tools and without following proper lockout/tagout procedures may result in personal injury or death. WARNING Do not remove the protective panels except for periodic inspections or wiring, even if the input power is not applied. Otherwise, you may access the charged circuits and get an electric shock. Do not open the doors while the inverter is working. Otherwise, you may get an electric shock. Do not open the doors when it is raining or when humidity exceeds 95%. Otherwise, you may get an electric shock and the equipment could be damaged. Operate the switches with dry hands. Otherwise, you may get an electric shock. Do not use cables with damaged insulation. Otherwise, you may get an electric shock. Do not subject the cables to abrasions, excessive stress, heavy loads or pinching. Otherwise, you may get an electric shock. 8 SAFETY INSTRUCTIONS POWER ELECTRONICS FREESUN HEC & HEC+ SERIES CAUTION Install the inverter on a non-flammable surface. Do not place flammable material nearby. Otherwise, fire could occur. Disconnect the input power if the solar inverter gets damaged. Otherwise, it could result in a secondary accident or fire. After the input power is applied or removed, the inverter will remain hot for a couple of minutes. Touching internal hot parts may result in skin burns. Do not apply power to a damaged inverter or to an inverter with parts missing even if the installation is complete. Otherwise, you may get an electric shock. Do not allow lint, paper, wood chips, dust, metallic chips or other foreign matter into the inverter. Otherwise, fire or accident could occur. CAUTION SAFETY Before operating the solar inverter, read this manual thoroughly to gain and understanding of the unit. If any doubt exists then please contact POWER ELECTRONICS, (+34 96 131 80 01) or your nearest agent. Handle the solar inverter with care according to its weight. Install the inverter according to the instructions within this manual. Do not place heavy objects on the inverter. Ensure that the mounting orientation is correct. Do not drop the inverter or subject it to impact. The Freesun inverters contain static sensitive printed circuits boards. Use static safety procedures when handling these boards. Avoid installing the inverter in conditions that differ from those described in the Technical Characteristics section. The cabinet doors must only be opened for commissioning, maintenance and troubleshooting, as well as for data query and parameter setting. The device is equipped with several fans for cooling. To perform any work on the fans is required that the equipment is switched off as explained in the correspondent section. This procedure should be taken into account for commissioning, maintenance and repair work. The device fans and the power unit create significant levels of operating noise. In addition to this, a fault in the device can lead to very high sound levels. We recommend the use of ear protection when in the vicinity of the device for extended periods. Immediately after isolating the device, depending on the operating conditions, certain components can be very hot (e. g. fuses, transformer core, sine wave filter, heatsinks, etc.). Safety gloves should always be worn when working near components that can be expected to be very hot. We recommend using safety gloves and glasses during all work on the inverter. SAFETY INSTRUCTIONS 9 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS CAUTION TRIAL RUN Verify all parameters before operating the inverter. Always apply voltage and current signals to each terminal that are within levels indicated in this manual. Otherwise, damage to the inverter may result. OPERATION PRECAUTIONS Do not modify or alter anything within the inverter. SPECIAL HAZARDS OF PHOTOVOLTAIC SYSTEMS Photovoltaic systems have special characteristics that can represent special hazards: An active power source is connected. This means that, regardless to the operating mode of the inverter, there may be voltage present, either from the photovoltaic generator and/or the FREESUN. This is especially important to consider when disconnecting particular parts of the system. Very high DC voltages are present (no zero-crossing) which, in case of a fault or inappropriate use of fuses or plugs, may lead to arcing. The short-circuit current of the photovoltaic generator is dependent on the level of solar irradiation and only slightly more than the maximum operating current. A highly branched generator array may be difficult to disconnect if a fault develops (e. g. short circuit). We recommend the extra use of an external DC disconnect and fuses for disconnecting the inverter. These components are included in the Power electronics optional disconnecting unit. Power Electronics must be informed about the grid operator requirements. The device contains capacitors on the AC and DC sides. The discharge time of the capacitors is 5 minutes. Wait until the capacitors have been discharged before carrying out any maintenance task. INTEGRATED ELECTRICAL SAFETY FEATURES Freesun inverters have the following integrated electrical safety features: 10 Software protection controls (See section 3.3 of the Programming and Software manual). On/Off switch (Reference 1 of the figure 0.1). DC Disconnect Switch (Reference 3 of the figure 0.1). AC Circuit breaker (Reference 2 of the figure 0.1). Anti-islanding protection (See the Programming and Software Manual). LED/Front panel display when unit is operational. SAFETY INSTRUCTIONS POWER ELECTRONICS FREESUN HEC & HEC+ SERIES SYSTEM REPAIR AND TROUBLESHOOTING CAUTION Always follow established Lockout/Tagout procedures. Failure to comply can result in serious injury or death to personnel. LOCKOUT / TAGOUT Lockout/tagout standards establish procedures to protect personnel from hazardous energy sources on equipment during service and maintenance. Lockout/tagout disables equipment producing hazardous amounts of electrical energy allowing servicing and maintenance personnel to safely perform their jobs. Employees must be trained to understand and follow the hazardous energy control procedures. Use only lockout/tagout devices authorized for particular equipment. Lockout/tagout devices must be durable, standardized and substantial. Lockout/tagout tags must identify authorized users to ensure the procedures are strictly adhered to. In order to reduce the chance of inadvertent system energization, the individual identified on the lockout/tagout notices should be the only personnel in possession of keys that can be used to unlock the lockout devices. GROUND FAULT WARNING If your installation has the positive or negative pole of the photovoltaic system earth connected, the following instructions must be followed: The only point in the installation where the positive or the negative pole should be grounded is in the inverter (through the Ground Fault Detector Interrupter -GFDI- that is added to that effect). It is important to note that if there was another grounded connection (pole) elsewhere in the installation (in the panels themselves, in the String Supervisor, etc...) the protection provided by the additional GFDI would NOT be effective. Therefore, as part of scheduled maintenance, it is recommended to inspect the insulation between the grounded pole and the earth. This will prevent the GFDI from providing inappropriate protection due to uncontrolled ground leakage. SAFETY INSTRUCTIONS 11 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS MARKS, SYMBOLS AND CONTROLS ON THE INVERTER CAUTION Do not ignore safety warnings. Failure to follow all safety warnings and caution could result in equipment damage or injury to personnel. Inverter CAUTION labels are listed in the following table: TEXT LOCATION Utility interactive Follow Safety Rules! Before Maintenance Actions. 1. Disconnect the inverter totally. 2. Ensure the inverter against accidental re-connection. 3. Verify that the installation is completely disconnected. 4. Carry out earthing and safety protections. 5. Protect against adjacent live part. WARNING – All mechanical and electrical user screwed connections must be tightened properly before commissioning the inverter. CAUTION – Risk Of Electric Shock. Both AC and DC voltage sources are terminated inside this equipment. Each circuit must be individually disconnected before servicing. When the photovoltaic array is exposed to light, it supplies a DC voltage to this equipment. CAUTION – For Proper Circuit Connection. Connect a minimum ______ kVA rated isolating transformer between the output of the unit and the utility powerline connections. The transformer is to be an isolation type having separate primary and secondary windings. CAUTION – Risk of electric shock. Normally grounded conductors may be ungrounded and energized when a ground-fault is indicated. Door. WARNING – Before maintenance actions on the inverter, disconnect external DC inputs and AC outputs safely. WARNING – Active power source connected. If the device is still connected to an active current source, do not manipulate or replace any fuse. CAUTION - Risk of high temperature in fuses and bars. Use Copper, Copper-Clad Aluminum or Aluminum conductor. CAUTION – Risk of electric shock from energy stored in capacitor. Stop the inverter feeding into the grid and wait 5 minutes before the AC supply disconnection. Do not remove the cover before the AC and DC disconnection. The discharge time could reach 30 minutes in abnormal conditions. The following symbols can be found in the inverter and used in this manual: DC current AC current Grounding electrode terminal Grounding point inside the inverter On position Off position 12 SAFETY INSTRUCTIONS Front part of each module and AC module. Cable connections. Door. Rear part of the door. Front part of each module. Front part of each module and AC module. Front part of each module. Front part of each module. Cable connections. Front part of each module. FREESUN HEC & HEC+ SERIES POWER ELECTRONICS The following figure shows the location of the inverter control features: Figure 0.1 Inverter controls Note: For inverters with the AC module located in their left side, the previous image is inverted. Inverter modules switch (Inverter’s ON/OFF switch) Main AC circuit breaker It allows the connection and disconnection of all the inverter modules. It allows the connection and disconnection of the AC grid. Disconnecting unit disconnects (Integrated in HEC+ Series or optional in HEC) It allows the connection and disconnection of the DC grid. The inside components and distribution must be configured by the user. The following table represents an example of the name plate located on the inverter: Model: FS1015CH10AN DC INPUT Max. Input DC Voltage: Min. Voltage MPP: Max. Voltage MPP: Max. Input DC current: Nominal output voltage: Frequency: Nominal Power : Nominal Output Current: Ambient Temperature: IP54 MADE IN SPAIN 1000V 538V 900V 2100A AC OUTPUT 380V 50Hz 1218kW 1702A 50ºC SAFETY INSTRUCTIONS 13 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 1 INTRODUCTION The latest advance in solar inverter technology based on Automatic Redundant Modular Master-Slave 2 2 System (ARM S ), a new feature that goes one step ahead by automatically bypassing and restarting the 2 2 inverter making production loses a problem of the past. Freesun Series ARM S Technology is made of 140kVA to 150kVA individual module inverters with both AC/DC protections to achieve from 420kVA to 1500kVA nominal power and from 1 to 5 MPPT. FREESUN accessories fulfil all the solar installations requirements such us power control interface (PCI), string monitoring (SFS), datalogger, remote inverter monitoring (FSDC), meteorology stations and additional electric protections. The Freesun HEC is the outdoor version of the HE series. Designed with high reliable and long-lasting components that increase safety and efficiency, and reduce the maintenance STANDARD FEATURES OPTIONS Max. Efficiency PAC, nom (η) 98.6% Multiple and user friendly monitoring solutions. AC circuit breaker and AC contactor in each module String supervisor from 0 to 24 independent Channels. DC contactor and DC fuses in each module Grid operator control by the Power Control Interface. High accuracy MPPT over a wide voltage range Integrated Meteo Stations and video camera. Engineered for compliance with international grid connection codes. (BDEW, CEI 0-16, PO12.3, …) Uninterruptible Power Supply (UPS). Automatic Redundant Modular Master-Slave System (ARM2S2) Efficient cooling system with variable speed drive control. Figure 1.1 General view of the FREESUN HEC+ Series inverter 14 INTRODUCTION FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 2 CONFIGURATION TABLE & STANDARD RATINGS 2.1 Configuration Table EXAMPLE. CODE: FS 0100 C H 10 A N 7 N A 20 2 HE SERIES FS FREESUN SERIES 0100 Output Power C Inverter Location H Isolating Transformer 10 Maximum input voltage A Isolating monitoring N Lightning and overvoltage protections 7 Output voltage N String Supervisor supply A Heating Resistors 20 Medium Voltage Output 2 MPPT Configuration[1] Other 0080 0100 ... 1500 I O R C P T K H U J 06 10 A N P N V R 1 7 8 N F N R A 15 20 22 24 30 33 36 1 2 … 10 I … 80kVa 100kVa ... 1500kVa Indoor Outdoor HES-S (Standard concrete station) Outdoor HES-R (Reduced concrete station) Outdoor HEC inverter Outdoor HEC Inverter w/ integrated DC subsystem Outdoor HET (ISO container station) Outdoor Open Skid station High Efficiency Inverter (HE SERIES) High Efficiency Inverter (HEC UL SERIES) High Efficiency Inverter (HEC JP SERIES) 600VDC 1000VDC Adjustable isolation between (+), (-) and earth Negative of the photovoltaic installation earth connected Positive of the photovoltaic installation earth connected Without overvoltage protection With AC and DC overvoltage protection With AC and DC overvoltage protection and lightning protection 360VAC 380VAC 400VAC Not included With auxiliary 24VDC power supply for String Supervisor 8 (SFS08) Not included With heating resistors Active Heating 15kV 20kV 22kV 24kV 30kV 33kV Under request [1] 1MPPT 2MPPT ... 10MPPT Left side – AC module Under request [1] The maximum number of MPPt’s depends on the number of modules implemented in each inverter with a maximum of one or two MPPt per module. This is an optional kit configured according to the MPPt number and Inverter Serie. CONFIGURATION TABLE & STANDARD RATINGS 15 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 2.2 Standard Ratings INPUT DC Voltage Range MPPt (VDC) [2] 510V-900V 538V-900V 566V-900V 510V-900V 538V-900V 566V-900V 900A 900A 900A 1200A 1200A 1200A Nominal AC Output Power (PAC) [1] 420kVA 435kVA 450kVA 560kVA 580kVA 600kVA OUTPUT Operating Grid Voltage ±10% (VAC) 360V 380V 400V 360V 380V 400V Nominal AC Current (IAC, nom) 722A 729A 736A 962A 972A 981A 510V-900V 538V-900V 566V-900V 510V-900V 538V-900V 1500A 1500A 1500A 1800A 1800A 700kVA 725kVA 750kVA 840kVA 870kVA 360V 380V 400V 360V 380V 1203A 1215A 1227A 1443A 1459A FRAME REFERENCE Max. PV Power (PPV) 1 FS0420CH1 FS0435CH7 FS0450CH8 FS0560CH1 FS0580CH7 FS0601CH8 FS0700CH1 FS0725CH7 FS0751CH8 FS0840CH1 FS0870CH7 504kWp 522kWp 540kWp 672kWp 696kWp 720kWp 840kWp 870kWp 900kWp 1008kWp 1044kWp FS0901CH8 1080kWp 566V-900V 1800A 900kVA 400V 1472A FS0980CH1 FS1015CH7 FS1050CH8 FS1120CH1 FS1160CH7 1176kWp 1218kWp 1260kWp 1344kWp 1392kWp 510V-900V 538V-900V 566V-900V 510V-900V 538V-900V 2100A 2100A 2100A 2400A 2400A 980kVA 1015kVA 1050kVA 1120kVA 1160kVA 360V 380V 400V 360V 380V 1684A 1702A 1718A 1925A 1945A FS1200CH8 1440kWp 566V-900V 2400A 1200kVA 400V 1963A FS1260CH1 FS1305CH7 FS1350CH8 FS1400CH1 FS1450CH7 1512kWp 1566kWp 1620kWp 1680kWp 1740kWp 510V-900V 538V-900V 566V-900V 510V-900V 538V-900V 2700A 2700A 2700A 3000A 3000A 1260kVA 1305kVA 1350kVA 1400kVA 1450kVA 360V 380V 400V 360V 380V 2165A 2188A 2208A 2406A 2431A FS1500CH8 1800kWp 566V-900V 3000A 1500kVA 400V 2454A 2 3 4 510V-900V 420kVA 560kVA 700kVA 840kVA 980kVA 1120kVA 1260kVA 1400kVA 360Vac MPPt Range (VDC) [2] 538V-900V 435kVA 580kVA 725kVA 870kVA 1015kVA 1160kVA 1305kVA 1450kVA 380Vac [1] Values at 50ºC, 50Hz [2] Values at 1.05·Vac nom and cos Φ= 1 16 CONFIGURATION TABLE & STANDARD RATINGS 566V-900V 450kVA 600kVA 750kVA 900kVA 1050kVA 1200kVA 1350kVA 1500kVA 400Vac Nominal AC Output Power (kVA)[1] # Modules 3 4 5 6 7 8 9 10 AC Output Voltage Max. DC current (A) FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 3 TECHNICAL CHARACTERISTICS 3.1 Freesun HEC Technical Characteristics 400VAC - MPPt window 566Vdc-900Vdc Number of Modules OUTPUT MPPt Voltage Window (VDC) [2] MPPt Window @ full power (VDC) [3] Maximum DC and Starting voltage Maximum DC current (A) FRAME 3 - FS 7 8 FRAME 4 - FS 9 10 FS0450_H FS0601_H FS0751_H FS0901_H FS1050_H FS1200_H FS1350_H FS1500_H 450 510 736 600 680 981 750 850 1227 900 1020 1472 1050 1190 1718 1200 1360 1963 1350 1530 2208 1500 1700 2454 400Vac 50Hz – 60Hz < 3% at nominal power 0.00 leading … 0.00 lagging adjustable / Reactive Power injection at night 0…100%/0.1% steps 900A Max. Efficiency PAC, nom (η) Euroeta (η) Max. Standby Consumption (Pnight) 1200A 1500A 566V-900V 580V-820V 1000V 1800A 2100A 2400A 2700A CABINET ENVIRONMENT 1380W 98.6% 98.6% 98.6% 98.3% 98.4% 98.4% < approx. 40W per module 10 kVA Built-in Internal transformer as standard 220VAC-5kVA user power supply available Optional 400V – 700VAh Internal UPS (LVRT compatible units are equipped as standard) 1840W 2300W 2760W 3220W 3680W 4140W 4600W Dimensions [WxHxD] [4] mm Weight (kg) [5] Air Flow Type of ventilation Degree of protection Permissible Ambient Temperature Relative Humidity Max. Altitude (above sea level) Noise level [6] IP54 -20ºC …+50ºC 4% to 100% Condensing 1000m; >1000m power derating 1% Sn (kVA) per 100m < 70 dBA Interface Communication Analogue Inputs String Supervisor Communication Plant Controller Communication Digital Outputs Alphanumeric Display / Optional Freesun App display or Web display RS232 / RS485 / USB / Ethernet (Modbus RTU Protocol, Modbus TCP/IP) 1 programmable and differential input; (0-20mA or ± 10mV to ± 10V) and PT100 RS485 / Modbus RTU Ethernet / Modbus TCP/IP 2 electrically-isolated programmable switched relays (250VAC, 8A or 30 VDC, 8A) PROTECTIONS Ground Fault Protection Humidity control Emergency Stop General AC Protection & Disconn. General DC Protection & Disconn. Module AC Protection & Disconn. Module DC Protection & Disconn. Overvoltage Protection Protection class Lightning Protections 3000A 98.6% 98.2% Control Power Supply UPS backup system Avg. Power Consumption FRAME 2 - FS 5 6 CONTROL INTERFACE EFFICIENCY & AUXILIARY SUPPLY AC Output Power (kVA) @ 50ºC AC Output Power (kVA) @ 40ºC Rated AC Output Current (A) @ 40ºC Operating Grid Voltage(VAC) Operating Range, Grid Frequency Current Harmonic Distortion (THDi) Power Factor (cosine phi) [1] Power Curtailment (kVA) INPUT REFERENCE FRAME 1 - FS 3 4 2900 x 1050 x 2400 2470 2780 3900 x 1050 x 2400 4900 x 1050 x 2400 3540 3850 4590 4900 Intake through lower part blown out through upper side Forced air cooling 5900 x 1050 x 2400 5640 5950 Floating PV array: Isolation Monitoring per MPP Grounded PV array (Positive pole and negative pole): GFDI protection per MPP Active Heating / Optional Heating Resistors Optional Circuit Breaker / Optional AC switch and fuses Optional External Disconnecting Unit Cabinet (DC fuse protection and no load disconnect with external operating handle) AC circuit breaker & contactor DC contactor & DC fuses AC and DC Inverter sides (Type 4) and Auxiliary Supply type 2 - Internal Standard Class I Optional (Integrated in the inverter) [1] Consult P-Q charts available: Q(kVAr)=√(S(kVA)²-P(kW)²). [2] Values at 1.00·Vac nom and cos Φ= 1. Consult Power Electronics for derating curves. [3] Values at 1.00·Vac nom, cos Φ= 1 and Tamb=40ºC. [4] Units with integrated DU subsystem (HEC+) will increase 1000mm in width. [5] Preliminary, consult Power Electronics. [6] Sound pressure level at a distance of 1m from the rear part. TECHNICAL CHARACTERISTICS 17 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 380VAC - MPPt window 538Vdc-900Vdc Number of Modules OUTPUT MPPt Voltage Window (VDC) [2] MPPt Window @ full power (VDC) [3] Maximum DC and Starting voltage Maximum DC current (A) FRAME 3 - FS 7 8 FRAME 4 - FS 9 10 FS0435_H FS0580_H FS0725_H FS0870_H FS1015_H FS1160_H FS1305_H FS1450_H 435 480 729 580 640 972 725 800 1215 870 960 1459 1015 1120 1702 1160 1280 1945 1305 1440 2188 1450 1600 2431 380Vac 50Hz – 60Hz < 3% at nominal power 0.00 leading … 0.00 lagging adjustable / Reactive Power injection at night 0…100%/0.1% steps 900A Max. Efficiency PAC, nom (η) Euroeta (η) Max. Standby Consumption (Pnight) 1200A 1500A 538V-900V 544V-820V 1000V 1800A 2100A 2400A 2700A CABINET ENVIRONMENT 1380W 98.6% 98.6% 98.6% 98.3% 98.4% 98.4% < approx. 40W per module 10 kVA Built-in Internal transformer as standard 220VAC-5kVA user power supply available Optional 400V – 700VAh Internal UPS (LVRT compatible units are equipped as standard) 1840W 2300W 2760W 3220W 3680W 4140W 4600W Dimensions [WxHxD] [4] mm Weight (kg) [5] Air Flow Type of ventilation Degree of protection Permissible Ambient Temperature Relative Humidity Max. Altitude (above sea level) Noise level [6] IP54 -20ºC …+50ºC 4% to 100% Condensing 1000m; >1000m power derating 1% Sn (kVA) per 100m < 70 dBA Interface Communication Analogue Inputs String Supervisor Communication Plant Controller Communication Digital Outputs Alphanumeric Display / Optional Freesun App display or Web display RS232 / RS485 / USB / Ethernet (Modbus RTU Protocol, Modbus TCP/IP) 1 programmable and differential input; (0-20mA or ± 10mV to ± 10V) and PT100 RS485 / Modbus RTU Ethernet / Modbus TCP/IP 2 electrically-isolated programmable switched relays (250VAC, 8A or 30 VDC, 8A) 2900 x 1050 x 2400 2470 2780 PROTECTIONS Ground Fault Protection Humidity control Emergency Stop General AC Protection & Disconn. General DC Protection & Disconn. Module AC Protection & Disconn. Module DC Protection & Disconn. Overvoltage Protection Protection class Lightning Protections TECHNICAL CHARACTERISTICS 3900 x 1050 x 2400 4900 x 1050 x 2400 3540 3850 4590 4900 Intake through lower part blown out through upper side Forced air cooling 5900 x 1050 x 2400 5640 5950 Floating PV array: Isolation Monitoring per MPP Grounded PV array (Positive pole and negative pole): GFDI protection per MPP Active Heating / Optional Heating Resistors Optional Circuit Breaker / Optional AC switch and fuses Optional External Disconnecting Unit Cabinet (DC fuse protection and no load disconnect with external operating handle) AC circuit breaker & contactor DC contactor & DC fuses AC and DC Inverter sides (Type 4) and Auxiliary Supply type 2 - Internal Standard Class I Optional (Integrated in the inverter) [1] Consult P-Q charts available: Q(kVAr)=√(S(kVA)²-P(kW)²). [2] Values at 1.00·Vac nom and cos Φ= 1. Consult Power Electronics for derating curves. [3] Values at 1.00·Vac nom, cos Φ= 1 and Tamb=40ºC. [4] Units with integrated DU subsystem (HEC+) will increase 1000mm in width. [5] Preliminary, consult Power Electronics. [6] Sound pressure level at a distance of 1m from the rear part. 18 3000A 98.6% 98.2% Control Power Supply UPS backup system Avg. Power Consumption FRAME 2 - FS 5 6 CONTROL INTERFACE EFFICIENCY & AUXILIARY SUPPLY AC Output Power (kVA) @ 50ºC AC Output Power (kVA) @ 40ºC Rated AC Output Current (A) @ 40ºC Operating Grid Voltage(VAC) Operating Range, Grid Frequency Current Harmonic Distortion (THDi) Power Factor (cosine phi) [1] Power Curtailment (kVA) INPUT REFERENCE FRAME 1 - FS 3 4 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 360VAC - MPPt window 510Vdc-900Vdc FRAME 1 - FS 3 4 Number of Modules OUTPUT MPPt Voltage Window (VDC) [2] MPPt Window @ full power (VDC) [3] Maximum DC and Starting voltage Maximum DC current (A) FS0560_H FS0702_H FS0840_H FS0980_H FS1120_H FS1260_H FS1400_H 420 450 722 560 600 962 700 750 1203 840 900 1443 980 1050 1684 1120 1200 1925 1260 1350 2165 1400 1500 2406 360Vac 50Hz – 60Hz < 3% at nominal power 0.00 leading … 0.00 lagging adjustable / Reactive Power injection at night 0…100%/0.1% steps 900A 1200A 1500A 510V-900V 510V-820V 1000V 1800A 2100A 2400A 2700A CABINET ENVIRONMENT 1380W 98.6% 98.6% 98.6% 98.3% 98.4% 98.4% < approx. 40W per module 10 kVA Built-in Internal transformer as standard 220VAC-5kVA user power supply available Optional 400V – 700VAh Internal UPS (LVRT compatible units are equipped as standard) 1840W 2300W 2760W 3220W 3680W 4140W 4600W Dimensions [WxHxD] Weight (kg) [5] Air Flow Type of ventilation Degree of protection Permissible Ambient Temperature Relative Humidity Max. Altitude (above sea level) Noise level [6] IP54 -20ºC …+50ºC 4% to 100% Condensing 1000m; >1000m power derating 1% Sn (kVA) per 100m < 70 dBA Interface Communication Analogue Inputs String Supervisor Communication Plant Controller Communication Digital Outputs Alphanumeric Display / Optional Freesun App display or Web display RS232 / RS485 / USB / Ethernet (Modbus RTU Protocol, Modbus TCP/IP) 1 programmable and differential input; (0-20mA or ± 10mV to ± 10V) and PT100 RS485 / Modbus RTU Ethernet / Modbus TCP/IP 2 electrically-isolated programmable switched relays (250VAC, 8A or 30 VDC, 8A) [4] PROTECTIONS Ground Fault Protection Humidity control Emergency Stop General AC Protection & Disconn. General DC Protection & Disconn. Module AC Protection & Disconn. Module DC Protection & Disconn. Overvoltage Protection Protection class Lightning Protections 3000A 98.6% 98.2% Control Power Supply mm FRAME 4 - FS 9 10 FS0420_H Max. Efficiency PAC, nom (η) Euroeta (η) Max. Standby Consumption (Pnight) UPS backup system Avg. Power Consumption FRAME 3 - FS 7 8 CONTROL INTERFACE EFFICIENCY & AUXILIARY SUPPLY AC Output Power (kVA) @ 50ºC AC Output Power (kVA) @ 40ºC Rated AC Output Current (A) @ 40ºC Operating Grid Voltage(VAC) Operating Range, Grid Frequency Current Harmonic Distortion (THDi) Power Factor (cosine phi) [1] Power Curtailment (kVA) INPUT REFERENCE FRAME 2 - FS 5 6 2900 x 1050 x 2400 2470 2780 3900 x 1050 x 2400 4900 x 1050 x 2400 4590 4900 3540 3850 Intake through lower part blown out through upper side Forced air cooling 5900 x 1050 x 2400 5640 5950 Floating PV array: Isolation Monitoring per MPP Grounded PV array (Positive pole and negative pole): GFDI protection per MPP Active Heating / Optional Heating Resistors Optional Circuit Breaker / Optional AC switch and fuses Optional External Disconnecting Unit Cabinet (DC fuse protection and no load disconnect with external operating handle) AC circuit breaker & contactor DC contactor & DC fuses AC and DC Inverter sides (Type 4) and Auxiliary Supply type 2 - Internal Standard Class I Optional (Integrated in the inverter) [1] Consult P-Q charts available: Q(kVAr)=√(S(kVA)²-P(kW)²). [2] Values at 1.00·Vac nom and cos Φ= 1. Consult Power Electronics for derating curves. [3] Values at 1.00·Vac nom, cos Φ= 1 and Tamb=40ºC. [4] Units with integrated DU subsystem (HEC+) will increase 1000mm in width. [5] Preliminary, consult Power Electronics. [6] Sound pressure level at a distance of 1m from the rear part. TECHNICAL CHARACTERISTICS 19 REGULATIONS FREESUN HEC & HEC+ SERIES CE conformity EMC Safety International Standards Grid Connection Germany Spain Italy France Romania United Kingdom Israel Puerto Rico South Africa Mexico Hawaii Other countries and regulations POWER ELECTRONICS FREESUN HE & HEC SERIES LVD Directive 2006/95/CE; EMC Directive 2004/108/CE EN 61000-6-2,-4; EN 61000-3-4 EN 62109-1,-2 (certified by SGS) IEC 62109-1; IEC 62109-2; IEC 62116 (Anti Islanding) BDEW MV Guideline RD 1699/2011, P.O. 12.3 CEI 0-16 [7] Arrêté du 23/04/08 ANRE Interconnection Code G59/2 [8] IEC (Israel Electrical Company) listed PREPA Technical Requirements RSA Renewable Grid Code General requirements for National Electric System connection Heco Technical requirements Consult Power Electronics [7] For the entire fulfilment of regulation CEI 0-16 it is required to add the following external protection devices approved by ENEL, side: General Protection Device (according to DK 5600) Interface Protection Device (according to DK 5740) The customer is responsible of both the correct selection and installation of these devices. [8] For the entire fulfilment of regulation G59 it is required to add external hardware that is not PE scope of supply. The client is responsible of both the correct selection and installation. 3.2 Operational Diagram Figure 3.1 Operational Diagram HEC Series 20 TECHNICAL CHARACTERISTICS FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 3.3 Efficiency curves The HEC Series through the parallel connection of inverter modules and fully integrated software provides a modularity that increases the efficiency at low capacity. The following charts show the effect of the parallel connection of the inverters in comparison with the unitary module at a nominal DC voltage of 550 Vdc.1 Figure 3.2 Efficiency Curve from 1 to 10 100kW modules. 1 For different configuration, please consult Power Electronics. TECHNICAL CHARACTERISTICS 21 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 4 DIMENSIONS The inverter is a heavy cabinet unit, therefore select the transport method adequately, follow the transport recommendations of this manual and ensure the compliance with the safety regional regulations. Danger of tipping during transport. The cabinet must always be transported upright. 4.1 HEC Series The dimensions and weight of the HEC Series inverters are defined in the following table: INVERTER FRAMES 1 2 3 4 DIMENSIONS in mm WIDTH DEPTH HEIGHT (W) (D) (H) REFERENCE FS0420CH1, FS0435CH7, FS0450CH8 FS0560CH1, FS0580CH7, FS0601CH8 FS0700CH1, FS0725CH7, FS0751CH8 FS0840CH1, FS0870CH7, FS0901CH8 FS0980CH1, FS1015CH7, FS1050CH8 FS1120CH1, FS1160CH7, FS1200CH8 FS1260CH1, FS1305CH7, FS1350CH8 FS1400CH1, FS1450CH7, FS1500CH8 WEIGHT (kg) 2470 2900 1050 2400 2780 3540 3900 1050 2400 3850 4590 4900 1050 2400 4900 5640 5900 1050 2400 Figure 4.1 HEC Frame 4 Note: For inverters with the AC module located in their left side, the previous image is inverted. 22 DIMENSIONS 5950 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 4.2 HEC+ Series The HEC+ series has the input cabinet integrated in the left side of the inverter. The dimensions and weight are defined in the following table: INVERTER FRAMES 1 2 3 DIMENSIONS in mm WIDTH DEPTH HEIGHT (W) (D) (H) REFERENCE FS0420PH1, FS0435PH7, FS0450PH8 FS0560PH1, FS0580PH7, FS0601PH8 FS0700PH1, FS0725PH7, FS0751PH8 FS0840PH1, FS0870PH7, FS0901PH8 FS0980PH1, FS1015PH7, FS1050PH8 FS1120PH1, FS1160PH7, FS1200PH8 WEIGHT (kg) 3540 3900 1050 2400 3850 4590 4900 1050 2400 4900 5640 5900 1050 2400 5950 Figure 4.2 HEC+ Frame 3 Note: For inverters with the AC module located in their left side, the previous image is inverted. DIMENSIONS 23 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 5 HANDLING, TRANSPORTATION AND INSTALLATION Read carefully the following installations and system commissioning instructions for a correct mechanical and electrical installation. The inverter must be installed in a dedicated area for qualified personal only. 5.1 Environmental ratings Following IEC62109-1 requirements the Freesun HEC Inverter environmental ratings are: Environmental category: Wet locations: Pollution degree: Ingress protection rating: Ambient temperature: Humidity: Maximum altitude and power derating: Overvoltage category: Protection class: Ultraviolet protection: Outdoor Yes PD3 IP54 -20ºC to 50ºC 4 % to 100 % (Condensing) Defined in Technical Specification sheet. AC side type IV DC side type IV Class 1 Yes 5.2 Reception and Storage The Freesun Inverters are carefully tested and perfectly packed before delivering. In the event of transport damage, please ensure that you notify the transport agency and Power Electronics: 902 40 20 70 (International +34 96 136 65 57) or your nearest agent, within 24hrs from receipt of the goods. Make sure model and serial number of the Inverter are the same on the delivery note and unit. The storage of the inverter should be sun and moisture protected and with an ambient temperature between -20°C and +50°C. 5.3 Handling and Transportation Only the transport methods described in the Hardware and Installation manual are permissible. Please follow the transport requirements here described. Any other transport method or system could damage the unit. The inverter has been designed to crane transportation. Power Electronics provides eight metal plates with lifting eyebolts in this regard. Make sure the lifting capacity of all the equipment is higher than the inverter’s weight. A crane is required for the onsite unloading of the inverter. It is the customer’s responsibility to ensure unimpeded access to the final place or location, taking into account the movement and handling of these vehicles in the field where the unloading is going to take place. A foundation must be made to the inverter prior to its delivery as described in the foundation section. Additionally the crane should fulfil the following requirements. 24 The crane must be independent from the truck. The crane must be equipped with two four-point chains. The crane and the transport items must have a greater load capacity than the inverter weight. HANDLING, TRANSPORTATION AND INSTALLATION POWER ELECTRONICS FREESUN HEC & HEC+ SERIES The following scheme illustrates the transport recommendations. Figure 5.1 Crane transport recommendations [mm] During transportation it is mandatory to manipulate it carefully and as close to the floor as possible. CAUTION If the maximum tonnage of cranes cannot meet the requirement (refer to section 4), it could cause damage to the equipment and lead to injury to people. Avoid brusque movements and shocks during lifting. Pause before lowering it to the floor and then slowly lower it on the floor to avoid any shock. Otherwise, the equipment can be damaged. Once the inverter is placed on the foundations, the installer must secure the inverter to the concrete or metal structure using M14 hot dip galvanized bolts of at least 10.9 quality, applying a torque of 100Nm. There is an L shape in each point of support that fixes the inverter to the floor. User must use a bolt per point of support. Figure 5.2 Floor fixation HANDLING, TRANSPORTATION AND INSTALLATION 25 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 5.4 Installation requirements The inverter has been designed with an isolated cabinet that ensure the optimum outdoor performance under the ambient conditions specified. Nevertheless it is recommended for locations with an ambient temperature higher than 40ºC and an incident radiation higher than 1100 W/m2 to orient the inverter facing north. For an adequate inspection and cooling capacity the following minimum distance should be considered. Figure 5.3 Inverter clearances 5.5 Cooling System The inverter has an independent IGBT variable speed cooling system 2. The air enters through the inlet hood located in the bottom part and exits through the outlet hood placed at the top part of the inverter thanks to the cabinets’ fans. Figure 5.4 Cooling system 2 26 Check software and programming manual to configure the cooling system. HANDLING, TRANSPORTATION AND INSTALLATION FREESUN HEC & HEC+ SERIES POWER ELECTRONICS Each internal module of the inverter requires 1400m³/h of fresh air. For example, an inverter with 4 modules requires 5600m³/h). Check the technical characteristics of the selected inverter to determine the number of modules. If the inverter is installed in a metal or concrete cabinet, ensure that the enclosure is equipped with adequate exhaust air vents and inlet dampers. The HVA system must be designed to ensure the ambient ratings of the inverters with sufficient capacity to dissipate the internal heat generated. The inverter module electronics and the AC module are cooled through a cooling system installed in each electronics compartment that moves the fresh and clean air from the bottom, through the dust filters and fans, to the top dust filters and exhaust fans. Each fan presents a cooling capacity of 75m³/h. The dust filters located in the inlet and outlet grating of the cabinet must be cleaned or replaced as part of the regularly scheduled maintenance. The frequency of maintenance should be according to the environmental site conditions. To replace the inlet and outlet filters, follow the next steps: Unscrew the three bolts that fix the grating to the electronics module. Unscrew the two bolts that fix both parts of the grating. Remove and clean/replace the filter. Place again the filter. Screw again the grating parts. Screw again the grating to the electronics module. Figure 5.5 Filter clean/replacement Maintain clearance distances around the inverter to ensure adequate cooling capacity for the inverter. Install the inverter in such way that it is not possible for intake and exhaust air from the inverter to be drawn into the air intake and exhaust of other devices (e.g., the transformer or other inverter). HANDLING, TRANSPORTATION AND INSTALLATION 27 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 5.6 Suggested Foundations The foundation must guarantee a solid, plain and leveled surface to the inverter, a minimum working space around it and a smoothly AC and DC cable access. The foundations should provide at least the following specifications. The foundation and soil should stand at least the inverter weight. In the event of installing the inverter in a concrete foundation, the concrete surface should be honed to ensure a correct positioning of the inverter. The surface should avoid water pools and favor rain water evacuation with a slope below 1%. The foundations must guarantee enough space for maintenance equipment and personnel. The foundations must have a 150mm step. The cables must be routed smoothly into the inverter from below, where the DC and AC busbars are allocated. The input and output dimensions are described in point “6. Wiring access and connections”. To ensure neither animals, insects, dust nor moisture could enter through the canalization, it is recommended to fill the canalization with polyurethane foam. 5.6.1 Concrete Foundations The following figure corresponds with HEC+ and 1 MPPt HEC inverters. LETTER Distance mm INVERTER HEC+ HEC with 1 MPPt B 2900 C 500 FRAME A - DIMENSIONS (mm) 3 2 1 4 3 2 1 6900 5900 4900 6900 5900 4900 3900 D 1100 E 1400 F 1000 FOOTINGS Nº DIMENSIONS LOAD (kg) 1&7 2 to 6 890 x 150 890 x 120 850 850 Figure 5.6 HEC+ and 1 MPPt HEC foundations [mm] 28 HANDLING, TRANSPORTATION AND INSTALLATION G 1300 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS The following figure corresponds with HEC inverters with more than 1 MPPt. LETTER Distance mm B 2265 C 1095 D 485 E 790 INVERTER FRAME A - DIMENSIONS (mm) HEC with more than 1 MPPt 4 3 2 1 6900 5900 4900 3900 F 500 G 1585 H 1260 I 395 J 700 K 985 L 1100 FOOTINGS Nº DIMENSIONS LOAD (kg) 1&6 2 to 5 890 x 150 890 x 120 850 850 Figure 5.7 HEC with more than 1 MPPt foundations [mm] 5.6.2 Deep Foundations A deep foundation is useful for installations whose slab surface foundation is not technically or economically viable. For this type of foundation, the installer may use piles joined by structural elements. Both piles and platform must be hot dip galvanized according to the ISO 1461:2009 standard. For a correct selection of the piles, it is necessary to determine the geographical situation and to make a geotechnical study of the area. Piles may be metallic, “H” beams preferably and in a single tranche. The selection of piles geometry, disposition, number and treatment will be relied to the terrain characteristics. It is not possible to determine them without realizing the previously mentioned studies. In any case, this design should follow section C5 (Deep Foundations) of the Structural Safety Basic Document. The procedure to place the driven piles consists in the terrain displacement without the need to excavate by driving or percussions with mallet taps. Driving deep must be higher than 8 times the selected profile equivalent diameter. The piles should protrude around 260mm. Figure 5.8 Piles location [mm] Driven piles will be braced with metallic profiles by flanged connection to the platform. Above the platform may be installed a metal grill. HANDLING, TRANSPORTATION AND INSTALLATION 29 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS For a correct selection of the platform, it is necessary to determine the geographical situation and to make a geotechnical study of the area. The selection of the platform geometry and treatment will be relied to the terrain characteristics. It is not possible to determine them without realizing the previously mentioned studies. In any case, this design should follow section C5 (Deep foundations) of the Basic Document of Structural Safety. Figure 5.9 Metal grill location Between the terrain and the platform, installer can apply a granular material layer, preferably with continuous grain size. Figure 5.10 Deep foundation example Note: The previous image is an example that includes the MV transformer and the optional Disconnecting Unit. The number of piles is relied to the terrain characteristics. In some cases, it is not necessary to provide one pile per inverter’s support. The cables must be routed smoothly into the inverter from below, where the DC and AC busbars are allocated. To ensure neither animals, insects, dust nor moisture could enter through the canalization, it is recommended to fill the canalization with polyurethane foam. 5.7 EMC Emissions/Immunity and Noise Levels The inverter HEC is compliance with EN 61000-6-2,-4; EN 61000-3-4 that defines EMC emissions and immunity levels. Inverter series have been designed to be installed in an industrial environment with a noise level below 79dBA3 at a distance of 1m from the rear part. Noise attenuation occurs as distance from the source increases. 3 It is possible to reduce the sound level reducing the fan speed, only when the inverter is operating with lower ambient conditions. For additional information consult Software and Programming manual. 30 HANDLING, TRANSPORTATION AND INSTALLATION FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 6 WIRING ACCESS AND CONNECTIONS All the cable access to the Freesun HEC should be done with appropriate connection grommets or cable glands that ensure the degree of protection of the inverter. Otherwise moisture or dust could penetrate to the equipment, reducing its lifetime. The installation is designed floating earth as standard. If the photovoltaic field installation is designed with a pole either positive or negative connected to ground, the pole ground connection will be done within the inverter. In this case, consult Power Electronics. Do not connect to ground any other equipment (Eg. Photovoltaic panels, String Supervisor, neutral terminal of the inverter, etc...). Otherwise the overcurrent protection provided by the circuit breaker would not be effective. 6.1 Ground connection Before connecting the AC and DC power connection, be sure that the chassis of the inverter is connected to ground through the dedicated terminals. These terminals are located in the right side and in the left side of the inverter; all of them labelled with the appropriate ground connection symbol. For the safety reasons it is determinant the grounding resistance of the plant itself. The latter must be established before the first start up of the Plant. CAUTION It is responsibility of the installer, to provide the dimensioning of the grounding conductor alongside with the characteristics of the inverter used and of the PV plant in order to minimize the grounding resistance. When connecting the earth, ensure that all connected cables are securely tight and protected from mechanical forces. The tightening torque in case of M8 PE terminals with embedded nut is 11Nm. The following picture shows the PE connection of the inverter: LETTER Distance mm A 365 B 100 C 90 D 180 E 390 Figure 6.1 PE connection in the inverter [mm] WIRING ACCESS AND CONNECTIONS 31 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 6.2 DC connections An active power source is connected. This means that, regardless to the operating mode of the inverter, there may be voltage present, either from the photovoltaic generator and/or the FREESUN. This is especially important to consider when disconnecting particular parts of the system. The optional Disconnecting Unit offers the possibility to isolate all the inverter from the DC voltage. For safety reasons it is determinant to have a minimum total resistance value of R > Vmaxdc/30mA=33.33kΩ in the DC side. As standard the isolation monitoring system is set at 20kΩ, this value should de adjusted following the previous equation to compliance with IEC 62109-2. The DC cables will be introduced trough the metallic panel situated in the bottom part of the inverter. As said before, each cable must be equipped with its own cable gland or grommet that prevent for dust or moisture penetration. 6.2.1 DC connection for HEC Inverters The metallic panel measures for cable access are: Figure 6.2 HEC DC cables access Note: For inverters with the AC module located in their left side, the previous image is inverted. The removable panels are delivered NOT pre-drilled or pre-marked. The installer is responsible to install the proper knockouts and water tight fittings in the glad plates. Use only the bottom removable panel to route the DC cables. The input configuration and the fuses value must be selected according to the PV installation characteristics and meet all code requirements. It is responsibility of the installer to select the proper overcurrent values. 32 WIRING ACCESS AND CONNECTIONS POWER ELECTRONICS FREESUN HEC & HEC+ SERIES The next figure illustrates the DC connection of the inverter. Figure 6.3 DC input connection Note: For inverters with the AC module located in their left side, the previous image is inverted. The DC busbars are aluminum. The connections should be done as the following recommendations. Before connecting the cables, clean the contact surfaces with a clean cloth and ethanol cleaner. It is recommended to use Ø13 copper, aluminum or copper-clad aluminum terminal lugs. Use M12 bolts and nuts, and apply a torque of 35Nm. Use a spring washer and a fender washer between the nuts or bolts head and the busbar or terminal lug. Use copper, aluminum or copper-clad aluminum 90°C min cables with a minimum rated voltage of 1000V. The voltage on each of the main DC cables should be identical and the PV generator must never exceed the maximum permissible inverter input voltage of 1000Vdc. Otherwise the inverter could be damaged when connected. WIRING ACCESS AND CONNECTIONS 33 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 6.2.2 DC connection for HEC+ Inverters The metallic panel measures for cable access are: LETTER Distance mm A 720 B 100 C 200 D 750 Figure 6.4 HEC+ DC cables access Note: For inverters with the AC module located in their left side, the previous image is inverted. The removable panels are delivered NOT pre-drilled or pre-marked. The installer is responsible to install the proper knockouts and water tight fittings in the glad plates. Use only the bottom removable panel to route the DC cables. The input configuration and the fuses value must be selected according to the PV installation characteristics and meet all code requirements. It is responsibility of the installer to select the proper overcurrent values. The next figure illustrates the DC connection of the inverter. Figure 6.5 DC input connection in the Disconnecting Unit module [mm] Note: For inverters with the AC module located in their left side, the previous image is inverted. 34 WIRING ACCESS AND CONNECTIONS POWER ELECTRONICS FREESUN HEC & HEC+ SERIES The DC busbars are aluminum. The connections should be made based on the following recommendations. The maximum number of cables per fuse holder is two, one per side. Before connecting the cables, clean the contact surfaces with a clean cloth and ethanol cleaner. It is recommended to use Ø13 copper, aluminum or copper-clad aluminum terminal lugs. Use M12 bolts and nuts, and apply a torque of 35Nm. Use a spring washer and a fender washer between the nuts or bolts head and the busbar or terminal lug. Use copper, aluminum or copper-clad aluminum 90°C min cables with a minimum rated voltage of 1000V. The voltage on each of the main DC cables should be identical and the PV generator must never exceed the maximum permissible inverter input voltage of 1000Vdc. Otherwise the inverter could be damaged when connected. 6.3 AC Connection The main AC circuit inside the inverter is configured to connect a Dy11 transformer. For proper operation, do not connect the transformer neutral (Xo) to ground. High voltages may be present in the voltage-carrying components of the lowvoltage and medium-voltage grids. The installer is responsible to work under the all locally applicable safety regulations and procedures for low-voltage and medium-voltage operation. • Ensure that the AC module circuit breakers are disconnected and safely locked-out/tagged out. • Disconnect the inverter from the DC sub-combiners. • Ensure that system is deenergized prior to making connections. The AC cables will be routed through the metallic panels situated in the bottom part of the AC module cabinet. All the AC cables must be equipped with a cable gland or grommet that prevents for dust or moisture inclusion. LETTER A B C D DISTANCE (mm) 460 225 110 340 Figure 6.6 AC module cabinet cables access Note: For inverters with the AC module located in their left side, the previous image is inverted. The cable length between the AC termination points must not exceed a maximum of 15m and the cables must be the same type to avoid unexpected operation. The cables for the three phase AC connection must have sufficient ampacity to prevent overheating and voltage drops. AC cables must meet all applicable local codes. Only the use of copper, aluminum or copper clad aluminum cables is permitted. WIRING ACCESS AND CONNECTIONS 35 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS The AC busbars are aluminum. The connections should be done as the following recommendations. Before connecting the cables, clean the contact surfaces with a clean cloth and ethanol cleaner. It is recommended to use Ø13 copper, aluminum or copper-clad aluminum terminal lugs. Use M12 bolts and nuts, and apply a torque of 35Nm. Use a spring washer and a fender washer between the nuts or bolts head and the busbar or terminal lug. Use copper, aluminum or copper-clad aluminum 90°C min cables with a minimum rated voltage of 1000V. Use only the bottom removable panel to route the AC cables. Figure 6.7 AC output connection busbars [mm] Note: For inverters with the AC module located in their left side, the previous image is inverted. 36 WIRING ACCESS AND CONNECTIONS FREESUN HEC & HEC+ SERIES POWER ELECTRONICS The AC voltage from the inverter is configurable (360Vac, 380Vac or 400Vac) depending on the maximum output power and the MPPt voltage range. The installer is responsible for the selection of a power transformer considering the local regulations and the following recommendations: Recommended transformer configuration is Dy11. Input Voltage according to the rated output voltage of the inverter. Output voltage according to the connection point at the medium voltage side. Transformer Rated Power according to the delivered rated output power of the inverter. Environmental ratings according to installation requirements. The maximum number of cables that can be connected to the AC module busbars is 12 cables per phase. 6.4 Overvoltage protections The Freesun HEC and HEC+ series inverters, as shown in the functional diagram, are equipped with internal AC and DC overvoltage protection. Optionally, the inverter can also be equipped with lightning protection. The AC main circuit overvoltage protection is equipped as standard with three surge suppression fuses (refer to figure 7.1 for location in the inverter). The main characteristics are shown in the following tables: AC OVERVOLTAGE PROTECTION SURGE SUPPRESSION FUSES Nominal Voltage (Un) Voltage Protection Level (Up) Nominal Discharge Current 8/20 µsec (In) 1000Vac 4.2kV 15kA Type Voltage Rating (Vac) 8/20 µsec Surge Rating VSP Size: 10x38mm 600V 15kA The DC overvoltage protection is installed in the inverter. The DC surge suppression is built-in removable modules that include a fault indication window. The DC surge suppression modules can be replaced using the top and bottom pushbuttons as it is shown in the following figure. Figure 6.8 DC overvoltage protection WIRING ACCESS AND CONNECTIONS 37 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS The main characteristics of the modules are shown in the following table: Nominal Voltage (Un) Voltage Protection Level (Up) 8/20 µsec Surge Rating 1000Vdc 4kV 40kA DC OVERVOLTAGE PROTECTION Furthermore, auxiliaries include an overvoltage protection. The main characteristics of the auxiliaries’ overvoltage protection are shown in the following table: Nominal Voltage (Un) Voltage Protection Level (Up) 8/20 µsec Surge Rating 275Vac 1.5kV 12.5kA AUXILIARIES OVERVOLTAGE PROTECTION 6.5 Ground Fault protections For ungrounded PV installations, the inverter is equipped with an insulation monitor as standard. This detector monitors the insulation resistance of the array to ground, providing early indication of faults before leakage current may even be present. If the inverter is configured with two or more MPPt, the DC overvoltage and insulation monitor protection will be replicated in each MPPt. For more information, consult Power Electronics. The main features of the insulation monitor are shown in the next table: Rated Voltage (V) Set response value 1000Vdc 20kΩ INSULATION MONITOR For grounded PV installations, the inverter is equipped with a GFDI as standard. Do not connect to ground any other equipment (Eg. Photovoltaic panels, String Supervisor, neutral terminal of the inverter, etc...). Otherwise, the 5A overcurrent protection provided by the GFDI would not be effective. In grounded PV installations the inverter can only be configured with one MPPt. 6.6 Main circuit protections HEC and HEC+ inverters include AC mains circuit software and hardware protections. For more information about software protections consult the Programming and software manual. Each inverter includes a circuit breaker in the AC side. The circuit breaker rating is described in the following table: Rated Current (A) Breaking Capacity (kA) 3200A 85kA AC MODULE CIRCUIT BREAKER Each inverter module includes a circuit breaker in the AC side. The circuit breaker rating is described in the following table: Rated Current (A) Breaking Capacity (kA) 300A 65kA MODULES AC CIRCUIT BREAKER Each inverter module includes two DC fuses in their DC input. The main characteristics are shown in the following table. MODULE DC FUSES 38 Type Rated Current (A) Breaking Capacity (kA) Screw to blade SPFJ400 Size: Class J 400A 10kA WIRING ACCESS AND CONNECTIONS FREESUN HEC & HEC+ SERIES POWER ELECTRONICS Each inverter module includes four DC measure protection fuses (located in the figure 7.1 number 8). Two for panels DC voltage measure and two for DC bus voltage measure. The main characteristics are shown in the following table. DC MEASURE PROTECTION FUSES Type Rated Current (A) Minimum Breaking Capacity (kA) Solar Fuses Size: 10x38mm 1A 20kAdc 6.7 Auxiliary Power Source The HEC and HEC+ inverters have as standard an internal power transformer (situated in the AC module), that provides 3x400Vac 50/60Hz internal power supply for control and ventilation circuit. The internal supply is not available for customer equipment. Power Electronics inverters also have 3x400Vac 50/60Hz supply for external loads which provide up to 5kVA to an external system (Lighting, String supervisors, MeteoStation and others). 6.8 External Control Connections It is possible to command the inverter prepared for external power supply. In this case, the installer should route the cables together through the wiring conduit, then route the cables as close as possible to the right side chassis to reduce the internal interference emission. Finally, drill the bottom panel of the AC module and protect it only with cable glands or grommets. For more information, consult Power Electronics. 6.9 Control connection These sections include general information and recommendations about inverter wiring communication. For further information about accessories connection ( Power Control Interface, String Supervisor, Ripple control receiver, Freesun Data Center, Meteo Stations, ...), please consult its own user manual. Consider the following recommendations prior to the control wiring installation: It is recommended to use shielded twisted cable with the shield connected to ground. The installer should route the cables through the bottom panel and protect them with cable glands or grommets to ensure the inverter degree of protection. The installer should route the cables through the wiring duct up to the module control board. Control wiring should be installed as far as possible from the power wiring. If it is necessary to cross power cables and control cables, these crossings will be done in a perpendicular way. Do not use control voltages of 24VDC and 230/120VAC over the same cable or cable rack. Figure 6.9 Control wiring restrictions WIRING ACCESS AND CONNECTIONS 39 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS Internally, each inverter module communicates with the master through CAN communication and synchronizes by fiber optic. Externally the modules can communicate with other devices trough RS232 / RS485 / USB / Ethernet, (Modbus RTU, Ethernet TCP/IP protocols) and optionally GSM. To connect and power those elements that are not part of the scope delivery of Power Electronics, consider the installation instructions of the respective manufacturers (ripple control receiver, router, meteorological stations …). All required information about digital I/O and analogue I/O is described below. Additionally Two analogue sensors and one PT100 temperature sensor can be connected to each module of the Freesun HEC. The maximum section for the control cables is 2.5mm² and the tightening torque is 0.4Nm Figure 6.10 Control terminals for the user Further information about setting of each input and output; please refer to the Freesun Software and Programming manual. 40 WIRING ACCESS AND CONNECTIONS POWER ELECTRONICS FREESUN HEC & HEC+ SERIES 7 COMMISSIONING Before commissioning, all work performed on the device should be thoroughly checked. Verify that the DC and AC voltages conform to the limits allowed on the inverter. 7.1 Initial Conditions WARNING Before starting the inverter, ensure that the grounding resistance is within site specified limits. Otherwise, the operator may be at risk of an electric shock. Use safety glasses and adequate personal protection equipment during operation with the door opened. 7.2 First Time Switch On Verify all connections have been made according to the previous “Wiring Access and Connection” section. Auxiliary control voltage switches on: 1. Switch on the auxiliary circuit breakers of each inverter module. These circuit breakers include the ones for the fans, soft load, input and output voltage measurement, auxiliary control voltage protection, etc. (See figure below 1). 2. Verify that main AC circuit breaker of each inverter module is switched on. The main circuit breaker is located in the rear of the inverter module. (See figure below 2). 3. Switch on the following breakers located in the AC module Auxiliary control voltage circuit breaker. Auxiliary power source circuit breaker. RCD circuit breaker. Main auxiliary circuit breaker. 4. When all the breakers are switched ON, the inverter is powered with the auxiliary control voltage and the display unit is illuminated, indicating the state of each inverter module. (See figure below 3, 10). Voltage measurement: Check that the AC voltage corresponds with the output AC voltage configured in the inverter. Check that the AC phase sequence corresponds with the inverter phase sequence. Check that the DC voltage is below the maximum DC voltage in each MPPT. Power switch on: 5. Close the inverter’s doors. 6. Remove Lockout/Tagout locks and safeties. 7. Connect all DC switches and check that DC voltage is present in the input DC busbar of each MPPT of the inverter (integrated in HEC+ inverters and in the optional Disconnecting Unit). In case the installation is equipped with String Supervisors by Power Electronics, ensure that the DC switches are connected. 8. Check that the medium voltage switchgear is switched on, so that the AC output of the inverter is connected to the grid. 9. Open the AC module window and switch on the main circuit breaker located in the output of the AC module of the inverter. (See figure below 4). COMMISSIONING 41 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 10. Finally, turn on the AC module switch key by selecting the “ON” position, allowing the beginning of the plate connection process (shown in the display as BSC status). 11. After the appropriate delay (300 seconds minimum per UL-1741), the DC contactor (6) of the modules will close, connecting the inverter to the DC side. 12. If the voltage (UAC), frequency (fAC) and DC input voltage (UPV) are within the acceptance range, the AC soft charge contactor (7) will be activated. After a short period of time, the main AC contactor (5) will be activated. In this way, the MPPT of the inverter selected is completely connected in both AC and DC sides, injecting power to the grid. 13. Inverters with multiple MPPT, please repeat steps from 10 to 12. Figure 7.1 FREESUN internal view. Inverter modules rear view (left), front view (center) and AC module (right) NUMBER 1 2 3 4 5 6 7 8 9 10 42 COMMISSIONING DESCRIPTION Auxiliary circuit Breakers Main module AC circuit breaker Auxiliary control power supply and auxiliary power source circuit breakers Main AC Circuit Breaker AC Module contactor DC contactor Soft charge contactor DC measure protection fuses Main circuit surge arrester and fuses Main auxiliary fuses POWER ELECTRONICS FREESUN HEC & HEC+ SERIES 7.3 Switch Off FREESUN inverter maintenance and operation tasks may be only performed by qualified personnel. To safely deenergize the inverter, follow the next steps. Standard Switch off: Turn off the AC module switch key by selecting the “OFF” position. The AC contactor (5), the DC circuit breaker (6) of the modules will switch off and the bus discharge process is enabled during 30 seconds. Wait 5 minutes for the bus caps to discharge. Maintenance tasks switch off: 1. Turn off the AC module switch key by selecting the “OFF” position. The AC contactor (5), the DC circuit breaker (6) of the modules will switch off and the bus discharge process is enabled during 30 seconds. Wait 5 minutes for the bus caps to discharge. 2. Disconnect the main AC circuit breaker (4) using its specific window. 3. Disconnect main DC switch (Disconnecting Unit). Do not leave the inverter DC busbar energized. 4. Open the inverter’s doors and disconnect Auxiliary circuit breakers (3, 10). CAUTION Voltage present on the DC bus. It should be taken into account that the DC busbars and fuses of the Disconnecting Unit remain connected to the photovoltaic cables. The device contains capacitors on the AC and DC sides that must discharge once the device has been switched off. After switching off, there is dangerous accidental-contact voltage present within the device; the discharge time of the capacitors is 5 minutes. COMMISSIONING 43 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 8 PREVENTIVE MAINTENANCE Freesun HEC inverter requires minimum maintenance and supervision during its lifetime. Nevertheless the inverter consists of advanced semiconductor, electric and electronic devices. The temperature, humidity, dust, vibration, pollution and normal wear can reduce system efficiency. Ambient conditions Module ALL Input and output power Power connections Cabinet Integrity and cleanness Conductor/ Cable Fuses LOW VOLTAGE MAIN CIRCUIT IGBT's module Correct capacitor Inductances Transformer AC contactor and circuit breakers Inverter Module Control board battery Insulation resistance in grounded installations 44 Are the ambient temperature and the humidity within specification? Are there any abnormal noises or vibrations? Are the Power terminals correctly fastened? Check tape seal on the doors. Check doors, gratings and cabinet about visual damages. INSPECTION METHOD CRITERION INSTRUMENT OF MEASUREMENT Thermometer, Hygrometer, Datalogger External measurement Temperature: -20 to +50 o Visual and audible. There are no anomalies. o Measure the displayed voltage between terminals L1, L2, L3 and N and between positive (+) and negative (-) DC poles. Digital multimeter. Tester. Display o Fasten the bolts one week after its start-up. Measure the temperature and Then, check yearly that the torque of the power connections temperature is connections homogeneous and below 70ºC Check that the torque is the indicated in the manual. Infrared thermometer Torque key o Is the input and output power correct? o Visual check. No anomaly. o Visual check If the cabinet paint is scratched or removed, it could appear oxide and corrosion. o Visual check No anomaly. Visual check. No anomaly. Visual check. Disconnect the output power cables of the inverter and measure the resistance value between: L1,L2,L3 DC(+), DC(-) with a tester > 10k No anomaly. o Check cabinet paint about visual damage or corrosion Check the bottom connection metal panels about pools, dust or rubbish Is the conductor corroded? Is the isolation of the cable damaged? Is there any fuse melted? 2 years INSPECTION 1 year PERIOD INSPECTION ELEMENT Weekly INSPECTION SITE For maximum equipment usage, follow the recommended maintenance procedures summarized in the next table. o o o Check the resistance value between each one of the terminals Have fluid leaks been observed? Is the capacitor well fastened? Is any dilation or retraction sign observed? Measure the capacitance Is there any liquid leak? Is there any overheated point? Check about visual damages. Is there any overheated point? Is the contactor damaged? Are the circuit breakers placed in each module damaged? o Digital multimeter. Analogue tester. o Visual check. No anomaly Instrument for Measure the capacitance with Capacitance higher than 85% of measuring a proper instrument. rated capacitance. capacity. o Visual check. Measure the surface and connectors’ temperature. No anomaly. Check that the temperature is homogeneous and below 70ºC Infrared thermometer. Visual check. Measure the surface and connectors’ temperature. No anomaly. Check that the temperature is homogeneous and below 70ºC Infrared thermometer. o Disconnect the power supply. Reset de circuit breaker with the test bottom. No anomaly. Is the battery discharged? o Check the batteries voltage. No anomaly. Tester Is there any earth leakage? Is the grounded pole conductor damaged? o Disconnect the GFDI fuse. Measure the resistance between the grounded phase and earth. The resistance value is above 1kΩ. Digital multimeter. Analog tester. PREVENTIVE MAINTENANCE o o o o FREESUN HEC & HEC+ SERIES DISPLAY COOLING SYSTEM 2 years INSPECTION 1 year PERIOD INSPECTION ELEMENT Weekly INSPECTION SITE POWER ELECTRONICS INSPECTION METHOD CRITERION o Disconnect the power supply (OFF) and rotate the fans manually. Check the connections. Check IGBT temperature Fan should rotate effortlessly. No anomaly. Are the gratings clogged by plastics or rubbish? o Visual check. No anomaly. Dust filters Are the dust filters obstructed? o Visual check No anomaly Measurement Is the displayed value correct? o Check the reading instrument with an external measurement. Check the specified values and the control values. Cooling fans Are there any abnormal noises or oscillations? Is there any overheated module? Inlet and Outlet Gratings INSTRUMENT OF MEASUREMENT Voltage meter / Current meter etc. Note: Long life of the main components is based on a continuous operation for the stipulated load. These conditions can change according to the environment conditions. CAUTION Voltage present on the DC bus. It should be taken into account that the DC busbars and fuses of the Disconnecting Unit remain connected to the photovoltaic cables. The device contains capacitors on the AC and DC sides that must discharge once the device has been switched off. After switching off, there are dangerous accidental-contact voltages present within the device, the discharge time of the capacitors is 5 minutes. PREVENTIVE MAINTENANCE 45 FREESUN HEC & HEC+ SERIES POWER ELECTRONICS 9 ACCESSORIES The Freesun Series provides throughout the accessories complete protection, control and monitoring solutions for worldwide photovoltaic installations. 9.1 Freesun Data Center The FDC (Freesun Data Center) is a datalogger designed for remote monitoring of photovoltaic plants. The user will be able to check from a remote location a complete overview of all the inverter’s data, such as AC features, DC features, energy, inverter modules status, string status, graphical and numerical energy production values, security cameras, weather stations (radiation, humidity, 4 temperature, …). . Figure 9.1 Data logger module 9.2 Power Control Interface The Power Control Interface (PCI) allows integrating easily all the Freesun series solar inverters of Power Electronics into power control systems. With the PCI, the grid operator could implement active power limitation or reactive power set point. Figure 9.2 Power Control Interface hardware 9.3 String Supervisor 16/24/32 The new String Supervisor generation could measure up to 32 independent channels. It is communicated with the inverter by RS485 and supplied by 230Vac. It is fully protected by the overvoltage protector, fuses in each string and motorized on-load disconnector. It is available with cable glands or multi-contact connectors. Figure 9.3 String Supervisor 16/24/32 4 46 Some of the described function are additional features for FSDC ACCESSORIES POWER ELECTRONICS FREESUN HEC & HEC+ SERIES 9.4 Disconnecting Unit Freesun HEC can be featured with up to 6 DC on-load disconnectors, 18 fuses and 18 independent monitoring channels. The disconnecting unit goes one step further improving the PV plant safety and operation for those who apply the best engineering. The Disconnecting Unit can be installed inside the inverter in up to 8 modules inverters (HEC+ inverters) or can be externally integrated. Both solutions present external handles for DC no load disconnectors. Figure 9.4 External Disconnecting Unit For more information about the Disconnecting Unit, see its specific manual. ACCESSORIES 47 FREESUN HEC & HEC+ SERIES 48 POWER ELECTRONICS DECLARATION OF CONFORMITY CE The Company: POWER ELECTRONICS ESPAÑA, S.L. C/ Leonardo Da Vinci, 24-26, 46980 Paterna (Valencia) +34 96 136 65 57 +34 96 131 82 01 Name: Address: Telephone: Fax: Declares under its own responsibility, that the product: Solar Inverter Brand: Power Electronics Model name: HEC Freesun Series Is in conformity with the following European Directives: References 2006/95/CE 2004/108/CE Title Electrical equipment designed for use within certain voltage limits Electromagnetic Compatibility References of the harmonized technical norms applied under the Low Voltage Directive: References EN 61209-1:2010 EN 61209-2:2011 Title Safety of power converters for use in photovoltaic power systems -- Part 1: General requirements Safety of power converters for use in photovoltaic power systems -- Part 2: Particular requirements for inverters References of the harmonized technical norms applied under the Electromagnetic Compatibility Directive: References EN 61000-6-2:2005 EN 61000-6-4:2007 IEC 61000-3-4:1998 nd Paterna, 2 of May 2014 David Salvo Executive Director Title Electromagnetic compatibility (EMC) -- Part 6-2: Generic standards - Immunity for industrial environments Electromagnetic compatibility (EMC) -- Part 6-4: Generic standards - Emission standard for industrial environments Electromagnetic compatibility (EMC) - Part 3-4: Limits - Limitation of emission of harmonic currents in low-voltage power supply systems for equipment with rated current greater than 16 A www.powerelectronics.es | www.power-electronics.com 24 Hours Technical Assistance 365 days a year +34 96 136 65 57 HEADQUARTER • VALENCIA • SPAIN C/ Leonardo da Vinci, 24 – 26 • Parque Tecnológico • 46980 – PATERNA • VALENCIA • ESPAÑA Tel. 902 40 20 70 • Tel. 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