GZS1 indoor metal-clad withdrawable switchgear(hereinafter short as switchgear)is a complete power distribution device for 3.6~24kV,3-phase AC 50Hz,single-bus and single-bus sectionalized system. It is mainly used for power transmission of middle/small generators in power plants; power receiving, transmission for substations in power distribution and power system of factories, mines and enterprises, and starting of large high-voltage motor, etc.,so as to control, protect and monitor the system. The switchgear meets IEC298,GB3906-91.In addition to be used with domestic VS1 vacuum circuit breaker, it can also be used 3AH5 from Siemens domestic ZN65A,and VB2 from GE, etc.,it is truly a power distribution device with good performance.
In order to meet the requirement for wall mounting and front-end maintenance, the switchgear is equipped with a special current transformer, so that the operator can maintain and inspect it in front of the cubicle.
Service environment
a) Air temperature: Maximum temperature: +40°C; Minimum temperature:-15°C
b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level: Maximum installation altitude: 1000M.
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) No frequent violent shake
Main technical specifications
No
|
Item
|
Unit
|
Parameter
|
1
|
Rated voltage
|
kV
|
7.2kV, 12 kV,17.5kV,24kV
|
2
|
Rated frequency
|
Hz
|
50/60
|
3
|
Rated current
|
A
|
630,1250,1600,2000,2500,3150,4000
|
4
|
Branch busbar Rated current
|
A
|
630,1250,1600,2000,2500,3150,4000
|
5
|
Main busbar Rated current
|
A
|
630,1250,1600,2000,2500,3150,4000
|
6
|
1min Power frequency
withstand voltage
|
wet
|
kV
|
38
|
50/60
|
dry
|
kV
|
48
|
60/65
|
7
|
Lightning impulse withstand voltage
|
kV
|
75
|
95/125
|
8
|
Rated short circuit breaking current (peak)
|
kA
|
40/50/63/80/100
|
9
|
Short time withstand current(4s)
|
kA
|
20/25/31.5/40
|
10
|
Protection type
|
|
IP4X for housing
|