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.
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 |