EOCR-SE Electronic Overload Relay with Terminals Overload and Phase Loss Protection Visual load Setting Aid and Verify Actual Load Current.(No Ammeter Required) Trip Indication(LED) and Fail-safe protection(N Type) Flexible Power Supply(90 to 260VAC or 320 to 480VAC) Remote Electrical Reset Built-in Terminals for ease of connection Description Two of three phase motor currents are monitored by current transformers. CTs form integral part of the relay, and external CTs are required for currents above 60Amps. The internal solid state circuitry compares actual motor current with preset load current, set by Load Knob. Any changes greater than the preset load current, due to either overload or single phasing, the red LED illuminates, indicating overload condition exists. If the current level does not fall off below set value until the elapse of delay time, SPDT relay changes state. The red LED remains illuminated indicating an overload trip has occurred. The relay may be reset manually or remote electrically by interrupting power supply. With the visual aid of the red LED, actual motor load current may be determined(no Ammeter required). Simply adjust the load knob slowly CCW until red LED flickers, and read the current scale. The flashing red LED indicates 100% of actual load current. The test button provides the means of testing the operation and integrity of the relay with or without motor running, when TEST button is depressed and held, red LED illuminates and the relay should trip after the delay time set at delay time Knob. Built-in convenience terminals are provided for ease of connection(No internal connections). How to set up 1) Set the single delay time knob to desired trip delay time, minimum equal to completion of normal starting. 2) When commissioning the relay or motor, set the load currents at least over the full load amperes. 3) With the control power on, depress the TEST button and hold. The LED should illuminate and after the elapse of the preset delay time, the output relay should trip. Then reset. 4) Start the load, and slowly turn the LOAD Knob CCW, until the LED flashes, where the 100% of actual load currents is indicated. Then, set the trip setting to the desired load currents. 5) The periodic testing of the unit, using TEST button is required to ensure full protection, and regularly as a Preventive Maintenance. Construction Dimensions Specifications MODEL Current Range Operating Time Accuracy Time Characteristics Control Voltage Rated Voltage Current Sensing Output Contacts Output Rating Output Mode Expected Relay Life Reset Environment Insulation Dielectric Strength Impulse Voltage Power Consumption Mounting Weight Typical Application EOCR-SE 05) 0.5 - 5A (scale 6.5A) 30) 3 - 30A (scale 35A) 60) 5 - 60A (scale 70A) Over 60A to 800A, 05 fitted w/external CTs O-TIME 0.2 - 15 seconds ±10% Current ±15% of max. time set value Time Definite Time 220) Voltage Free(90~260)VAC, 50/60Hz 440) Voltage Free(320~480)VAC, 50/60Hz Other Voltage optional. 600VAC, 50/60Hz 2 CTs SPDT 3A/250VAC, 5A/125V, resistive, 5A/30VDC Relay energized in normal state(Fail-safe, N Type) Mechanical : 200,000,000 operations Electrical : 100,000 ops at rated load Manual or remote electrical by interrupting supply Auto Reset optional Run -20 + 70 deg. Temp. Store -30 + 80 deg. Humidity 45~85% RH, Non-condensing Between casing and circuits : over 10M Ohms with DC500V megger 1)Between casing and circuits : AC 2000V, 60Hz, 1 min 2)Between contacts : AC 1000V, 60Hz, 1 min 3)Between circuits : AC 2000V, 60Hz, 1 min 1.2/50μsec, 5 , impulse, IEC255-4 Under 2VA Panel approximately 145 gram Ordering Information EOCR-SE-05 R-220 MODEL : Electronic Over Current Relay Current Range : 05, 30, 60 Type N : Relay energized in control power applied. R : Relay de-energized in control power applied. Control Voltage : 220, 440 VAC or Other Tel +82 2 3473-2340 / Fax +82 2 3473-1159