Indoor SF6 Circuit Breaker
GeneralHR4 type high voltage indoor SF6 gas circuit breaker with two installation …
Indoor SF6 Circuit Breaker

Indoor SF6 Circuit Breaker

Detailed description

  • Description
  • Service environment
  • Technical data

General

HR4 type high voltage indoor SF6 gas circuit breaker with two installation way by drawable/Fixed. which is widely application for three-phase AC power system of rated voltage from 3.3kV up to 36kV at frequency 50/60Hz, especially using for power plant, transformer substation, petrol chemical industry, metallurgy, manufacturing industry, airport, residential area, etc..

Its high performance switchgear which will reduce over-voltage and harmonic impulse at max for by a normal or fault breaking or making. 

Its easy for interchange for VD4,SF1,HD4 type switchgear like type KYN28 or AMS, ABB type ZS1 series, etc.

This circuit breaker is follow per standards like:

IEC62271-100 AC high voltage circuit breaker,

GB1984-2003 AC high voltage circuit breaker

JB3855 3.6-40.5Kv indoor AC High voltage circuit breaker

DL/T403 Specification of 12-40.5kV indoor High voltage vacuum circuit breaker.

 

 



a) Air temperature: Maximum temperature: +40°C; Minimum temperature:-25°C

 

b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .

 

c) Altitude above sea level: Maximum installation altitude: 2500m

 

d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.

 

e) No frequent violent shake

No

Item

Unit

Parameter

1

Rated voltage

kV

12/17.5

24/36/40.5

2

Rated frequency

Hz

50/60

3

Rated current

A

630, ……4000A

4

1min Power frequency withstand voltage

kV

48

65/70/85

5

Lightning impulse withstand voltage

kV

75/95

125/200

6

Rated short circuit breaking current (peak)

kA

50/63/80/100

7

Rated active load and close circuit breaking current

A

63

50

8

Rated short breaking current

kA

20, …40

9

Rated short circuit making current (peak)

kA

50/63/80/100

10

Rated cable(line) charging breaking current

A

50 and 10

11

Rated capacitor bank switching current

A

400

12

Rated withstand current (peak)

kA

50/63/80/100

13

Short time withstand current (4s)

kA

20, …40

14

Mechanism life

times

10000

Note: For short circuit breaking current & rated current is optional by clients.

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