12kV Series Insulation Cylinder type indoor vacuum circuit breaker

Rated short-circuit making peak current: 50kA; Duration of rated short-circuit: 4s; Mechanical life: 20000 times; Phase distance: 210mm;

Product Details Company Profile

Description

Place of Origin: Zhejiang, China (Mainland)
Brand Name: OEM
Model Number: VS1-12/630-20
Type: Vacuum
Poles Number: 3
Rated voltage: 12kV
Rated frequency: 50Hz
Rated current: 630A
1min power frequency withstand voltage: 42/48kV
Lightning impuklse withstand voltage: 85/95kV
Rated short-circuit breaking current: 20kA
Rated short-circuit making peak current: 50kA
Duration of rated short-circuit: 4s
Mechanical life: 20000 times
Phase distance: 210mm

VS1 indoor high-voltage vacuum circuit breaker is a kind of indoor high voltage switchgear of rated voltage reaches 7.2-12KV.

It meets the National Standards:

GB1984-2003 <High-Voltage Alternating-Current Circuit-Breakers>.

JB3855-1996 <3.6-40.5 kV indoor High-voltage alternating-current vacuum circuit-breaker>

DL403-91 <Indoor vacuum circuit breaker for high-voltage of rated voltage up to 10-35kV>

IEC60694,

IEC62271-100.

Main technical parameter

Rated voltage	12kV
Rated frequency	50Hz
1min Rated power-frequency withstand voltage	42/ 48kV
Rated lightning impulse test voltage	75/ 85kV
Rated current	630A
Rated short-circuit breaking current	20kA
Rated short-circuit making peak current	50kA
Duration of rated short-circuit	4s
Breaking operations	100times
Mechanical life	20,000times
Rated operating sequence	O- t- CO- t1- CO

Mechanical parameter

Clearance between open contacts	11 ± 1 mm
Overstroke	3.5 ± 0.5 mm
Three-phase opening and closing asynchrony	≤2 ms
Closing contact bounce time	≤2 ms
Contact pressure of closing contact	2000 ± 200 N
Average opening speed	0.9 - 1.2 m/s
Average closing speed	0.5 - 0.8 m/s