Electric Earthing Switch Factories – JN22B-40.5/31.5 Series High Voltage Earthing Switch – Timetric

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Electric Earthing Switch Factories – JN22B-40.5/31.5 Series High Voltage Earthing Switch – Timetric Detail:

Product definition

Model:	JN22B-40.5/31.5-□

JN	22B	40.5	31.5	□
Indoor earthing switch	Design No.	Maximum volage (KV)	4S thermalstabliy currnt (KA)	Central distance between polesImm)

Working condition

●Altitude：≤1000m；
●Ambient temperoture：-10℃ ~+40℃ ；
●Earthquake intensity：≤8 degree；
●Appliable in the place without corrosive, flammable gas and water place

Introduction

JN22B-40.5/31.5 series indoor HV 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.As an earthing protection, it can be used in KYN□- 40.5 or other kinds of switchgears. It is complied with GB 1985-2004 and IEC129 standard.

General

The controlle of YF-DJN-04 earthing switch can realize the control and protection of motor operating mechanism. If the electric mechanism has difficulty in driving the motor, for example the installation is not in place or the mechanism is stuck, which reaches the protection condifion, the controller can break the motor immediately and drive motor reversely to release the stuck state of the chassis.

Introduction

In order to adapt to the development of power swichgear, we developed the electric earthing switch which achieves national invention patent. To maintain the style and the relevant interlock of the original switchgear, the electric earthing switch adds motor operating mechanism on the basis of original earthing switch JN15, JNI7, JN22B and JN22 series.It could maintain the characteristics of the original earthing switch and realize the electric operation of the earthing switch at the same time.And the electric and manual operation do not need to switch, which satisfies the requirement of programmed operation in the power system.

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
Phase center distance		mm	280, 300, 350, 400
Rated insulation level	PF withstand voltage (1 min)	kV	Phase to earth	42
	Lightning impluse withstand voltage		Phase to phase	75

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