Vacuum circuit breaker

Vacuum circuit breaker

The vacuum circuit breaker is placed in a stable environment filled with SF6 gas, which is not affected by the environment and meets indoor installation and maintenance-free needs of GB / T11022 GB1984. The vacuum arc extinction and three-phase isolation structure are adopted, where the fault current can be normally broken under zero gauge pressure and it has a good current breaking capacity.

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Model YCC -12(Z)/T630-20 YCC-V-24 YCG-12(Z)/T1250-31.5
Type report number 16K0077-S 15Q0235-S 15K0162-S
Rated voltage 12kV 24kV 12kV
Rated current 630A 630A 1250A
Rated frequency 50Hz 50Hz 50Hz
1min rated short-time power frequency withstand voltage (phase / fracture) 42/48kV 65/79kV 42/48kV
Rated lightning impulse withstand voltage (phase / fracture) 75/85kV 125/145kV 75/85kV
Basic short circuit test mode T10 2kA T10 2kA T10 3.15kA
T30 6kA T30 6kA T30 9.45kA
T60 12kA T60 12kA T60 18.9kA
T100s 20kA,50kA Peak T100s 20kA,50kA Peak T100s 31.5kA,80kA Peak
T100a 20kA,DC:47% T100a 20kA,DC:45% T100a 31.5kA,DC:45%
Rated short circuit breaking current breaking times 20kA,30 times 20kA,30 times 31.5kA,30 times
Single - phase cable charging current opening and closing test CC1 2.5A~10A,48 times"O" CC1 2.5A~10A,48 times"O" CC1

2.5A~10A,2

4times"O"

CC2 ≥25A,24 times"O" CC2

≥25A,2

times4"O"

CC2 ≥25A,24 times"CO"
CC2 ≥25A,24 times"CO" CC2

≥25A,24

times"CO"

CC2
Three - phase capacitor group (single) current opening and closing test BC1 63A~252A,24 times"O" BC1 63A~252A,24 times"O" BC1
BC2

≥630A,80

times"CO"

BC2

≥630A,80

times"CO"

BC2
Three - phase capacitor group (back to back) current opening and closing test BC1

40A~160A,24 times"O"

BC1

40A~160A,24

times"O"

BC1
BC2

≥400A,80

times"CO"

BC2 ≥400A,80 times"CO" BC2
Rated short-circuit withstand current (main circuit / ground circuit) 20kA 20kA 31.5kA
Rated short time withstand current duration 4s 4s 4s
Rated peak withstand current (main circuit / ground loop) 50kA 50kA 80kA
Partial discharge test 20pC 10pC 10pC