Description:

JN22-40.5/31.5 indoor high voltage grounding switch is an advanced level product with high technical parameter performance developed by Xi'an High Voltage Electric Power Research Institute. After comprehensive assessment, its performance meets the requirements of GB1985-89 《AC high voltage isolation switch and grounding switch》

Applicable to 40.5kV AC 50Hz power system, can be used with KYN61-40.5 and other types of high voltage switchgear, can also be used as grounding protection for high-voltage electrical equipment maintenance.

Use environment:

Ambient air temperature: upper limit +40 ° C, lower limit -10 ° C

Altitude: no more than 1000 meters

Earthquake intensity: no more than 8 degrees

No fire,explosion hazard, severe dust, chemical corrosion and severe vibration

Project		Unit	Data
Rated voltage		KV	40.5
Rated short-time withstand current		HZ	31.5
Rated short circuit duration		S	4
Rated short circuit closing current		KA	80
Rated peak withstand current		KA	80
Center distance between poles		mm	280; 300; 350
Rated insulation level	1minPower frequency withstand voltage	KV	phase to ground and interphase	95
	Lightning impulse withstand voltage			185

L (Interpase distance)	L1	L2
280	750	1060
350	890	1200