Outdoor Sf6 Gas Circuit Breaker

China Outdoor Sf6 Gas Circuit Breaker, Find details about China Circuit Breaker, Circuit Break from Outdoor Sf6 Gas Circuit Breaker

Model NO.
GCB
Poles Number
3
Type
Circuit Breaker
Function
Overcurrent Protection
Certification
ISO9001-2000
Trademark
Rockwill
Transport Package
Wooden Packing
Specification
IEC, GB
Origin
Zhejiang, China
HS Code
85352100
Model NO.
GCB
Poles Number
3
Type
Circuit Breaker
Function
Overcurrent Protection
Certification
ISO9001-2000
Trademark
Rockwill
Transport Package
Wooden Packing
Specification
IEC, GB
Origin
Zhejiang, China
HS Code
85352100
Outdoor SF6 gas circuit breaker

Summary


GCB medium voltage circuit breakers for outdoor installation use sulphur hexafluoride gas(SF6) to extinguish the electric arc and as the insulating medium.

Breaking in SF6 gas takes place without current chopping or generation of over voltages.

These characteristics guarantee a long electrical life for the circuit-breaker and limited dynamic, di-electric and thermal stresses on the installation.

The GSH type of stored energy and free release mechanical operating mechanism allows opening and closing operations through local and remote control.

The operating mechanism, the activating kinematics of the moving contacts and the anti-condensation heater are located inside a tight metal enclosure which also acts as the support for the poles.

The above-mentioned structure is supported by a frame made of telescopic metal sections which allow the height of the circuit-breaker terminal to be adapted from 2800mm to 3700mm.

The metal enclosure has IP54(*) degree of protection and is fitted with a tight door with an inspection window.

The circuit-breaker is compact and ensures a high level of sturdiness and excellent mechanical reliability.

The enclosure is made out of a steel plate with adequate surface protection by a special metalizing and painting process. The support structures are hot dip galvanized.

Main technical data

 
Circuit-breaker on columnGCB-12/24GCB-36GCB-40
standardsIEC 62271-100···
Rated voltageUr(kV)12/243640.5
Rated insulation voltageUs(kV)12/243640.5
Withstand voltage at 50HzUd(1 min)( kV)70(dry)/60(wet)95(dry)/80(wet)95(dry)/80(wet)
Impulse withstand voltageUp(kV)125/150200200
Rated frequencyFr(kV)50-6050-6050-60
Rated normal current(400C )Ir(A)125025001250250012502500
Rated breaking capacityIsc(kA)252525252525
31.531.531.531.531.531.5
Rated short-timeIk(kA)252525252525
Withstand current(3s)31.531.531.531.531.531.5
Making capacityIp(kA)636363636363
808080808080
Operation sequence(O-0,3s-CO-15s-CO)···
Opening time(ms)45+1045+1045+10
Arcing time(ms)10-1510-1510-15
Total breaking time(ms)55-6055-6055-60
Closing time(ms)75+1075+1075+10
Overall dimensionsOn frame3090-38403090-38403090-3840
H(mm)
L(mm)900900900
P(mm)686686686
Weight(kg)900900900
SF6 gas absolute pressureRated service value(kPa)380380550
Operating temperature(1) (ºC) -25…+40 -25…+40 -25…+40 
 Tropicalisation IEC:60068-2-30,721-2-1 · · · 
 Electromagnetic compatibility IEC:60694,61000-6-2,61000-6-4 · · · 
 Solar radiation (W/m2) 1000 1000 1000 
 Presence of pollution IEC 815-table 1 Level III Level III Level III 
 Creepage distance (cm/KV) 2.5 2.5 2.75 
 Ice coating (mm) 10 10 10 
 Wind speed (m/s) 34 34 34 
 Earthquake resistance (g) 0.3 0.3 0.3 
 Static force on the terminals Longitudinal(N) 750 750 750 
 Transversal(N) 500 500 500 
 Vertical(N) 750 750 750 
(1)for lower operating temperatures, please consult us.

Outdoor Sf6 Gas Circuit Breaker
Outdoor Sf6 Gas Circuit Breaker
Outdoor Sf6 Gas Circuit Breaker
Outdoor Sf6 Gas Circuit Breaker
Outdoor Sf6 Gas Circuit Breaker
Outdoor Sf6 Gas Circuit Breaker
Outdoor Sf6 Gas Circuit Breaker