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High Voltage SF6 Gas Circuit Breaker

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High voltage sf6 gas circuit breaker

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:

IEC62271-100AC 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.

  


SF6 circuit-breaker

 

HM4-12

HM4-17

HM4-24

HM4-36

HM4-40

Standards

 

IEC 62271-100 CEI 17-1 (file  1375)

Rated voltage

Ur [kV]

12

17.5

24

36

40.5

Rated insulation voltage

Us [kV]

12

17.5

24

36

40.5

Withstand voltage at 50 Hz(1min)

Ud [kV]

28

38

50

70

95

Impulse withstand voltage

Up [kV]

75

95

125

170

185

Rated frequency

Fr [Hz]

50/60

Rated normal current (40 °C)

Ir [A]

630/800/1250/1600/2000/2500/3150/3600

Rated breaking capacity

Isc [kA]

12.5/16/25/31.5/40/50

Rated short-time

Ik [kA]

12.5/16/25/31.5/40/50

Making capacity

Ip [kA]

31.5/40/50/63/80/100/125

Operation sequence

 

O-0.3s-CO-15s-CO

Opening time

[ms]

45

45

45

45

45

Arcing time

[ms]

10~15

10~15

10~15

10~15

10~15

Total breaking time

[ms]

55~60

55~60

55~60

55~60

55~60

Closing time

[ms]

80

80

80

80

80

Maximum overall dimensions



H [mm]

640

649

818

730/1060

790/1123

W[mm]

493

618

730

880/955

748/805

D [mm]

496

496

620

695

833

Pole centre distance

I [mm]

150

210

275

350

275

Weight

[kg]

114

114

119

128

190

Absolute SF6 gas pressure

[kPa]

380

380

380

380

450

Operating temperature

[°C]

-5~+40

Tropicalization

 

IEC:  60068-2-30, 60721-2-1

Electromagnetic compatibility

 

IEC: 60694



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