24 kV Compact Switchgear Unit ECOS-C
•Slimmest compact
system in its class
•Eco-friendly
•Digital protection relays
easy to integrate
•Easy to use
•Single busbar insulated
•Vacuum interrupter
Type of switchgear unit
The ECOS-C switchgear ring
main unit is a type-tested,
compact single busbar system
with metal enclosure.
Safe to touch
The busbar systems and
pre-selectors for busbars/earthing switch are completely
safe to touch. They are single
pole fluid insulated.
Environmentally friendly fluid
isolation
The benefits of the excellent
Midel 7131 insulation fluid as
compared to mineral oil:
Field of applications
The ECOS-C switchgear unit is
used indoors for energy distribution in medium-voltage networks:
•Biodegradable
•Self-extinguishing
•Minimal built-up of waste gas
•Non-toxic
•High combustion point
•High moisture tolerance
•High thermal resistance
• Transformer stations
• Switching stations
• Industrial installations
• Rectifier stations
No. of bays/combinations
The ECOS-C is available with 2 to
7 bay units. Units can be combined by using a bay as a simple
busbar tap and interconnection
by cables.
Suitable for more demanding
applications in
• tunnel construction
• waterproofing zones
• fire protection zones
Cellpack Power Systems AG • Schützenhausstrasse 2 • 5612 Villmergen
Phone +41(0)56 619 88 00 • Fax +41(0)56 619 88 04
http://powersystems.cellpack.com • [email protected]
Medium-voltage unit ECOS-C
Page 2
Design of the system
The fluid-filled poletubes are sealed by means of a metal membrane system. This guarantees a high
level of thightness of the moving
switch elements. A fluid expansion tank with a front mounted
level monitoring window provides additional reliability.
1. Sealing
2. Jacking ring
The circuit breakers fitted in the
pole tubes conduits are based
upon vacuum interruptor technology and require no maintenance. When earthing switch and
vacuum switch chamber are not
fitted, the pole conduits are also
used as busbar taps.
3. Pole tube cover with
wave bellow
4. Drive lever
5. 4-lip sealing ring
6. Pole tube with corrugation
The offset arrangement means
connecting up the medium-voltage cables from the front is very
easy using simple-to-fit, angled
plug-in cable connectors. Surge
arresters can also be connected if
required.
Split core type current transformers can be mounted in the cable
terminal compartment.
When a fault arc occurs, pressure
relief is downwards into the false
floor.
Cellpack Power Systems AG • Schützenhausstrasse 2 • 5612 Villmergen
Phone +41(0)56 619 88 00 • Fax +41(0)56 619 88 04
http://powersystems.cellpack.com • [email protected]
Medium-voltage unit ECOS-C
Page 3
Controls
All switching elements and pre-selectors have mutual mechanical locking, and thereby guarantee high
operational reliability. Grounding of the incoming or outgoing cable is always done via a circuit breaker, the
earth switch is therefore safe to switch. The mechanical switch position indicators and the capacitive voltage
display are idealy integrated in the mimic diagram of the front panel.
1. Position indicator for ON/OFF switch
2. Pre-selector locking flap (5) blocked in
Position ON
3. ON/OFF switch
4. Indicator of spring pre-load
5. Pre-selector
6. Manual drive for main spring loading
7. Position indicator for pre-selector, busbar or earthing
8. Electronic protective relay (option)
9. Capacitive voltage display VDS (to
EN 61243-5) on cable side
10. Mechanical cycle counter
11. Insulating fluid level indicator
7 bays = 1850
Dimensions
2 to 7 bays
Height (mm)
1400
Width (mm)
See dimensional
drawing (right)
Depth (mm)
1040
Height of secondary cabinet (mm)
500
Depth of secondary cabinet (mm)
398
Overall height (mm)
1900
6 bays = 1610
5 bays = 1370
4 bays = 1130
3 bays = 890
2 bays = 650
Cellpack Power Systems AG • Schützenhausstrasse 2 • 5612 Villmergen
Phone +41(0)56 619 88 00 • Fax +41(0)56 619 88 04
http://powersystems.cellpack.com • [email protected]
Medium-voltage unit ECOS-C
Page 4
Technical details
The ECOS-C switchgear unit is suitable for nominal voltages up to
24 kV and nominal currents up to 630 A. Refer to the following
tables for details:
Switchgear unit (EN 62271-200)
ECOS-C 16 kA and ECOS-C 20 kA
Rated voltage Ur
24 kV
Rated short-time power frequency withstand Ud
50 kV
Rated lightning impulse withstand voltage Up
125 kV
Rated frequency fr
50 Hz
Rated short-time current lk
20 kA
Rated short-circuit duration tk
1s
Rated surge current Ip
50 kA
Rated normal current lr
630 A
Rated normal current, busbar lr
630 A
Ambient temperature*
-25° to +50° C
Fault arc qualification
IAC A FL 20 kA 1s
Service continuity category
LSC 2 PM
Degree of protection for the metal enclusure
IP2x
Degree of protection for the poletube/busbar assemblies
IP63
Site altitude
Insulating medium
no limit
Midel 7131, synthetic, dielectric
liquid based on ester
Pressure relief
downwards
* dependent on secondary equipment
Circuit breaker (EN 62271-100)
ECOS-C 16 kA
ECOS-C 20 kA
24 kV
24 kV
1s
3s
Rated short-time current lk
16 kA
20 kA
Rated surge current Ip
40 kA
50 kA
Rated short-circuit breaking current lsc
16 kA
20 kA
Rated normal current lr
630 A
630 A
Switching, mechanical
M2
M2
Switching, electrical
E1
E1
O-0,3s-CO-3min-CO
O-0,3s-CO-3min-CO
Rated voltage Ur
Rated short-circuit duration tk
Rated switching sequence
Extinguishing medium
Drive
vacuum
vacuum
manual/motor drive
manual/motor drive
Cellpack Power Systems AG • Schützenhausstrasse 2 • 5612 Villmergen
Phone +41(0)56 619 88 00 • Fax +41(0)56 619 88 04
http://powersystems.cellpack.com • [email protected]
Medium-voltage unit ECOS-C
Page 5
Options
Digital protective relay
Three types of digital protective relay («RN1» size) can be integrated
directly in to the switchgear housing, depending on the selection of
other options such as manual/motor operated mechanism, remote
signaling etc. This means there is no need for an additional, secondary
cabinet.
Motor drive
A motor drive can be fitted to every switching bay of the ECOS-C
switchgear unit for the purposes of remote control. The motor drive
raises the spring drive automatically as required. The manual drive
(operator key) is not affected by the motor drive. A motor drive can
also be fitted afterwards, with an operating voltage of 24 V DC, 48 V
DC or 230 V AC (other voltages are available on request).
Secondary cabinet
Heater
The ECOS-C switchgear unit can
be fitted with a secondary cabinet for the installation of manufacturer-independent protection
and measurement systems.
Secondary cabinets can be easily
removed for transportation and
installation because the internal
electrical connections are established with plug-in systems.
The ECOS-C switchgear unit is
intended for indoor use. A heater
with integrated thermostat can
be used where installation conditions have minimum temperatures below -5° C or extremely high
air humidity (> 90%). Operating
voltage is 230 V AC (others on
request).
Other options
Current converters (split core transformers) and surge arresters can be
fitted in the cable terminal compartment. Various variants for circuit
breaker remote operation are available. Auxiliary voltages 24 V DC,
48 V DC, 230 V DC and 230 V AC are available for the switch-on and
off coils, and the auxiliary contactors for the position remote indication
of switches.
Cellpack Power Systems AG • Schützenhausstrasse 2 • 5612 Villmergen
Phone +41(0)56 619 88 00 • Fax +41(0)56 619 88 04
http://powersystems.cellpack.com • [email protected]
Medium-voltage unit ECOS-C
Page 6
Standard bays
Busbar bay
Circuit breaker bay
Metering bay (single unit)
A separate metering bay matching
the ECOS-C unit is available in the
same, approved housing (3-bay,
air-insulated).
Installation
Floor openings
A gap of at least 50 mm on the sides and 15 mm at the back must
be left between the ECOS-C medium-voltage switchgear unit and the
wall. For maintenance reasons, we recommend a distance of
100 mm from the unit to the building wall (on the sides as well as
towards the rear). Appropriate openings must be provided because
pressure is relieved downwards on the ECOS-C when a fault occurs.
Appropriate floor depending of the number of bays or units combined.
The floor recess is 2 x 65 mm
shorter than the width of the
system. The depth of the floor
recess for all ECOS-C switchgear
units is 230 mm.
2 bays
4 bays
3 bays
Cellpack Power Systems AG • Schützenhausstrasse 2 • 5612 Villmergen
Phone +41(0)56 619 88 00 • Fax +41(0)56 619 88 04
http://powersystems.cellpack.com • [email protected]
Medium-voltage unit ECOS-C
Page 7
5 bays
6 bays
7 bays
Cellpack Power Systems AG • Schützenhausstrasse 2 • 5612 Villmergen
Phone +41(0)56 619 88 00 • Fax +41(0)56 619 88 04
http://powersystems.cellpack.com • [email protected]
Medium-voltage unit ECOS-C
Page 8
Pressure relief
Pressure relief on the ECOS-C
switchgear unit is downwards
into the false floor or conduit.
The clearance of the false floor or
conduit must be at least 230 mm.
Side view
Minimum 230
Front view
Minimum [40+(n x 240)]
1 Floor opening
2 Direction of pressure relief
3 Expanded metal (provides on site)
n = no. of bays
Standards
ECOS-C-PR-EN-21.05.2015
Subject to technical modifications.
The ECOS-C switchgear unit satisfies the regulations and provisions
valid at the time of type testing (2015). They are essentially for the
1 to 52 kV variants of the switchgear unit:
•
IEC 62271-1
Common specification
•
IEC 62271-100
AC circuit breakers
•
IEC 62271-102
AC disconnectors and earthing switches
•
IEC 62271-200
AC metal-enclosed switchgear and controlgear
for rated voltages abov 1 kV and up to and
including 52 kV
•
IEC 61243-5
Voltage detecting systems
What does SF6 -free mean?
In 1997, SF6 has been put on the Kyoto list of substances of
which the use and emission should be minimized. SF6 is the
most potent greenhouse gas currently known: 1 kg contributes
as much to global warming as 23,900 kg of CO2. In the ECOS
medium-voltage systems of Cellpack Power Systems AG, a fireproof, eco-friendly and synthetic ester-based dielectric insulating
fluid, MIDEL 7131, is used as external insulation of the switching
chamber and busbar system.
What is SWISS LABEL?
SWISS LABEL is a society for the promotion of Swiss products and
services. The SWISS LABEL association is concerned essentially
with brand and label care in the broadest sense.
The mark may be claimed only for products that have been
manufactured entirely in Switzerland or worked or processed in
Switzerland to a certain extent. The Swiss portion of a product
must currently be at least 70%.
Cellpack Power Systems AG • Schützenhausstrasse 2 • 5612 Villmergen
Phone +41(0)56 619 88 00 • Fax +41(0)56 619 88 04
http://powersystems.cellpack.com • [email protected]