Liyond Manufacture Jn22b 40.5kv High Voltage Earthing Switch for Switchgear

• Certification: ISO9001
• Shell Material: Steel Plate
• Voltage Level: High Voltage
• Installation: Fixed
• Structure: as Specification
• Current: AC
• Model NO.: JN22B-40.5-31.5
• Product Name: Earthing Switch
• Application: High Voltage Switchgear
• Transport Package: Standard Export Packaging
• Specification: as specification
• Trademark: Liyond
• Origin: China

Product Description

The performance of JN22B-40.5 indoor high-voltage grounding switch conforms to the national standard GB1985-2004 "AC high-voltage isolating switch and grounding switch". It is suitable for power systems with three-phase rated voltage of 40.5kV and AC 50Hz. It can be combined with KYN61-40.5 high-voltage The switchgear and other types of high-voltage switchgear are used together as a grounding protection for the maintenance of high-voltage electrical equipment.

Conditions of use
1.Altitude not more than 1000m.
2. Ambient temperature not higher than +40ºC, not lower than -10ºC.
3. Relative humidity is not more than 95% on average per day and not more than 90% on average per month.
4. The seismic intensity does not exceed 8 degrees.
5. The installation site cannot have gas, steam, chemical precipitation, smoke, dust and dirt that seriously affect the insulation and conductivity of the grounding switch, as well as its explosive erosion substances.
6. The installation site must not have frequent and violent vibration.
 

Technical Parameters

Item		Unit	Data
Rated voltage		KV	35
Maximum voltage		KV	40.5
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
Phases center distance		mm	280,300,350,400
Rated insulation level	PF withstand voltage (1min)	KV	Phase to earth Phase to phase	95
	Lightning impulse withstand voltage	KV		185

 

Drawing

Model	E	G	F	D	H	L
JN22B-40.5/31.5-280	280	410	80	464	684	1050
JN22B-40.5/31.5-300	300	390	80	504	724	1100
JN22B-40.5/31.5-320	320	370	80	544	764	1200
JN22B-40.5/31.5-330	330	360	80	564	784	1200
JN22B-40.5/31.5-350	350	340	80	604	824	1200
JN22B-40.5/31.5-360	360	330	80	624	844	1200
JN22B-40.5/31.5-420	420	410	80	744	964	1380
JN22B-40.5/31.5-440	440	390	80	784	1004	1380