JN15-12 Medium-voltage Switchgear Ring Main Unit Grounding Switch 10Kv Power High-voltage AC Grounding Knife Switch
Main applications
JN15-12/31.5 series indoor high-voltage earthing switch is an earthing switch with internationally advanced level produced by the company with advanced technology and assembling structure,its performance meets the requirements of GB1985-2004 High-voltage alternating-current disconnectors and earthing switches and IEC62271-102:2002,it is suitable for indoor three-phase AC 50(60)Hz power systems from 3 to 12kV;its short-circuit making capacity protects other electrical equipment in the switchgear from being damaged,it can be used with various high-voltage switchgears,and acts as a ground protection device during maintenance of high-voltage electrical equipment.
Service conditions
1.Ambient air temperature:-20℃~+40℃;
2.Altitude not exceeds 1,000m,please specify in the order if exceeds 1,000m.
3.Relative humidity:daily mean not over 95%,monthly mean not over 90%;
4.Seismic intensity:≤Ms8;
5.Pollution class:class II.
▶ Main technical parameters
|
Item
|
Unit
|
Data
|
|
Rated voltage
|
kV
|
12
|
|
Rated short-time withstand current
|
kA
|
31.5
|
|
Rated short-circuit duration
|
S
|
4
|
|
Rated short-circuit making current
|
kA
|
80
|
|
Rated peak withstand current
|
kA
|
80
|
|
Rated insulation level
|
Rated short-time power frequency withstand voltage
|
kV
|
Phase-to-ground and phase-to-phase
|
42
|
|
Rated lightning impulse withstand voltage
|
75
|
|
Mechanical life
|
times
|
2000
|
Product Tags:
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31.5kA Medium Voltage Disconnect Switch 10KV High Voltage Knife Switch Images
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