JN22B 40.5kv Motorized Earthing Switch Grounding Knife Indoor High and Medium Voltage Switchgear Earthing Switch
JN22B-40.5/31.5 indoor high-voltage earthing switch (hereinafter referred to as earthing switch)is a new product developed by the company.Its performance meets the requirements of GB1985-2004 High-voltage alternating-current disconnectors and earthing switches and IEC62271-102:2002,it is suitable for three-phase power systems of AC 50Hz and rated voltage 40.5kV,it can be used withKYN61 -40.5 high-voltage switchgear and other high-voltage switchgears,and acts as a ground protection device during maintenance of high-voltage electrical equipment.
Its structure is simple and compact,with excellent performance,is easy to be operated with small angle.It is similar to JN15-12 series,its connection and transmission parts are exchangeable with JN15-12.
Service conditions
1.Altitude not exceeds 1,000m:
2.Ambient air temperature:-25℃~+40℃;
3.Seismic intensity:≤Ms8;
4.Installation site should be free of fire,explosive danger,heavy dust,chemical corrosion or severe vibration.
|
Item
|
Unit
|
Data
|
|
Rated voltage
|
KV
|
40.5
|
|
Rated short-time withstand current(4s)
|
kA
|
31.5
|
|
Rated short-circuit making current
|
kA
|
.80
|
|
Rated peak withstand current
|
kA
|
80
|
|
Phase-to-phase distance
|
mm
|
300,350,400
|
|
Rated insulation level
|
Rated short-time power frequency withstand voltage(1min)
|
kV
|
Phase-to-ground and phase-to- phase
|
95
|
|
|
Rated lightning impulse withstand voltage
|
|
|
185
|
|
Product model
|
E
|
L
|
D
|
|
JN22B-40.5/31.5-300
|
300
|
1100
|
696
|
|
JN22B-40.5/31.5-350
|
350
|
1150
|
796
|
|
JN22B-40.5/31.5-400
|
400
|
1200
|
896
|
Product Tags:
|
|
Motorized Earthing Switch JN22B 40.5kV Ground Switch With 31.5kA Short Circuit Current Images
|
