JN22-40.5 Series High Voltage Earthing Switch

JN22-40.5 Series High Voltage Earthing Switch is an advanced level product with high tech parameters performance. After comprehensive evaluation, it conforms to GB1985 AC HV disconnect switch and earthing switch, applies to power system of 40.5kV and AC 50Hz. Can be used with KYN61-40.5 and other types high voltage switchgear, also play a protective role in the high-voltage electrical equipment overhaul.

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Product Description

Product definition of JN22-40.5 Series High Voltage Earthing Switch

Jn22-40.5,31.5 Series High Voltage Earthing Switch

Introduction

JN22-40.5 series high voltage earthing switch is researched and developed by XI’AN HV Electric research organization, with advanced design and steady performance, simple structures, simple mounting end adjustment suitable for electric power system with 40.5KV, Three-phase, AC 50Hz. Support with KYND-40.5 and other various kinds of HV switchgear and as earthing protedion. II is complied with GB 1985-2004 and IEC129 standard.

Working condition of JN22-40.5 Series High Voltage Earthing Switch

1. Altitude: w 1000m

2. Ambient temperature: -10°C ~+407丁

3. Earthquake intensity: w 8degree

4. Appliable in the place without corrosive, flammable gas and water place

Mainly technical parameters

	Item	Unit	data
	Rated voltage	KV	30
	Maximum voltage	KV	40.5
	Rated short time withstand current (thermal stability)	KA	31.5
	Rated short circuit withstand time	S	4
	Rated short circuit making current	KA	80
	Rated peak withstand current (dynamic stability)	KA	80
Rated insulation leve	Main Power Frequency Withstand Voltage	KV	95
Rated insulation leve	Lightning Impulse Withstand Voltage	KV	185
	Central Distance Between Poles	time	300;350;400