Norelco Medium Voltage
Switchgear
VERSATILE AND SAFE SOLUTIONS FOR TRANSFORMER SUBSTATIONS AND POWER DISTRIBUTION
For the building of a medium voltage network, Norelco has
three
different type of solutions to offer for indoor medium voltage power distribution:
modular or RMU SF6 switchgear or air-insulated switchboards.
NORELCO CGM is a modular SF6-type medium voltage switchgear for
building an electrical utility network. The CGM system consists of
various type of cubicles: feeder (load switch), fused load-brake
switch, circuit
breaker,
busbar switch and metering cubicles. In both the CGM and the CGC the
busbar system is located in the SF6-compartment, which means
maximum protection also for the busbars.
The circuit breaker
cubicle is available as a vacuum circuit breaker.
NORELCO CGC is a modern SF6-type ring main unit which is always
delivered as one compact unit consisting of two feeder and one fused
protection cubicle (2L+1P). The CGC and CGM systems are compatible
with each others and e.g. a CGC system can be extended with CGM
cubicles.
|
CGM and CGC-module
extension |
CGM types
| type |
cubicle type |
UN |
IN |
thermal short-circuit
capacity |
| CGM-CML |
circuit breaker |
12/24 kV |
400/630 A |
16/20 kA |
| CGM-CMP-F |
fuse circuit breaker |
12/24 kV |
400/630 A |
16/20 kA |
| CGM-CMP-V |
vacuum circuit breaker |
12/24 kV |
400/630 A |
16/20 kA |
| CGM-CMIP |
busbar breaker |
12/24 kV |
400/630 A |
16/20 kA |
| CGM-CMM |
metering cubicle |
12/24 kV |
- |
- |
| CGM-CMR |
cable rise cubicle |
12/24 kV |
- |
- |
CGC types
| Type |
UN |
structure |
| CGC-CNE |
12/24 kV |
2L+1P, fixed structure |
| CGC-CE-D |
12/24 kV |
2L+1P, extensible to the right |
| CGC-CE-I |
12/24 kV |
2L+1P, extensible to the left |
| CGC-CE |
12/24 kV |
2L+1P, extensible to both
sides |
Technical data:
- Norelco Type: CGC, CGM
- type tested, e.g. short-circuit and arc tested at KEMA
- Un = 12 kV - 36 kV
- In = 400/630 A
- Standards: IEC 298, IEC 129, IEC 265, IEC 420, IEC 694, A2-94
- Structure: galvanised and stainless
steel, SF-6 tank made of stainless steel
- Standard Features of the CGM/CGC:
- pressure gauge
- sockets for voltage indicator
- earthing switch
- mechanical interlocking
CGM- ja CGC-auxiliary
equipment
- motorization kit
-
overcurrent relay RPTA 3000
-
overcurrent relay RPTA 3011
-
overcurrent relay RPTA 3111
-
protective relay RPGM
-
auxiliary contacts NO+NC
-
release and closing coil
-
voltage indicator
NORELCO EHS is a modular medium voltage switchgear assembly which can
be equipped with air-insulated or other type of equipment. The
EHS-system consists of various type of cubicles: feeder, fused
protection, circuit breaker, busbar switch, metering and cable rise
cubicles
Technical data:
- Norelco Type: EHS
- Un = 12 kV - 24 kV
- In = 400/630 A
- Standards: IEC 298, A2-94
- Structure: made of hot dip zinc coated steel plate with bolt
connections
- Surface Treatment: preliminary treatment in several phases and
epoxy powder painting in 220 C oven
- Standard Colour: doors and panels beige Oxyplast 928
- Standard Features of the EHS:
- a set of bolts for operational grounding
- an isolative working protection plate for air-insulated
equipment
- lifting hooks
- doors with windows for visual isolation
distance checking
- Options:
- connection busbar
- local lighting panel
- roof and back plates
- door locking with magnetic or key-equipped locking
|
EHS switchgear |
|