Vgk Series Indoor High Voltage Vacuum Circuit Breaker Used in Air Insulated Cabinet

Vgk Series Indoor High Voltage Vacuum Circuit Breaker Used in Air Insulated Cabinet image

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Basic Info.

Model NO.

VGK

Transport Package

Packages

Specification

12kv

Trademark

LIYOND

Origin

China

Production Capacity

5000/Year

Product Description

Summary:

TCFS-12 Compact Stationary Solid Insulated Switchgear (hereinafter referred to as “switchgear”) is a new generation of extensible, modularized and free-maintenance metal enclosed switchgear, which is widely used in 3-12kVand 50Hz electric system. Its switches are including:

TLS load switch

TLS-T load switch+ fuse-combination unit

TVC breaker

TLG isolated earthing switch

Environmental Conditions:

2.1 Ambient air temperature

a) Upper +40ºC;

b) Lower -25ºC.

2.2 Ambient temperature

a) Daily average relative humidity:≤95%;

b) Monthly average relative humidity:≤90%;

c) Daily average saturated vapor pressure:≤2.2kPa,

d) Monthly average saturated vapor pressure:≤1.8kPa.

2.3 Altitude

No more than1500m.

2.4 Operation place

No flammable, explosive hazard, chemical corrosion and severe vibration.

Picture:

Specification:

No.	Parameters name					Unit	Parameters
							Circuit breaker	Load switch
1	Rated voltage					kV	12
2	Rated current of main busbar					A	630		1250
3	Rated frequency					Hz	50
4	Rated short time withstand current				Main circuit	kA	25	31.5
					Ground circuit		21.7	27.4
5	Rated short-time peak current				Main circuit		63	80
					Ground circuit		54.5	68.5
6	Rated short circuit withstand time				Main circuit	s	4
					Ground circuit		2
7	Rated short circuit closing current (peak)					kA	63	80
8	Rated short circuit breaking current						25	31.5
9	Rated short circuit breaking times					Times	30
10	Rated operation sequence						O-0.3s-CO-180s-CO
11	Mechanical life			Circuit breaker (load switch)		Times	10000
				Three-position switch			5000
12	Rated insulation level	1min power frequency withstand voltage (effective value)			Phase, to ground	kV	42
					Fracture		48
		Lightning impulse withstand voltage (peak)			Phase, to ground		75
					Fracture		85
		Power frequency withstand voltage of secondary circuit				V	2000
13	Contact opening distance					mm	9±1
14	Overtravel						3±0.5
15	Interphase center distance						210±1
16	Closing contact bounce time					ms	≤2
17	Three phase asynchronous of opening						≤2
18	Opening time		highest				17~55
			rated
	When the operating voltage is		Minimum
19	Closing time					ms	30~70
20	Average opening speed (first 6mm average)					m/s	1.0~1.8
21	Average closing speed (after 6mm average)						0.8~1.4
22	Main conductive circuit’s resistance					μΩ	≤100
23	Contact pressure					N	3200±150
24	Opening contact’s rebound amplitude					mm	≤2

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