Ningbo Tianan (Group) Co.,Ltd.
Ningbo Tianan (Group) Co.,Ltd
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Outdoor HV Porcelain Stanchion Type Vacuum Circuit Breaker Filled With SF6
Overview
ZW30-40.5/2000-31.5 outdoor HV vacuum circuit breaker (hereinafter referred to as ZW30-40.5) can be used in the power system with rated voltage 40.5KV, rated current 2000A and three - phase AC 50Hz to protect the equipment in the industrial and mineral enterprises, power plants and substations, which can be used as a connecting circuit breaker in the workplaces of frequent operation.
This product complies with the standards of the GB1984-89 AC HV Circuit Breaker, IEC56 HV AC Circuit Breaker and JB3385-1996 3.6-40.5KV Indoor AC HV Vacuum Circuit Breakers.
Parameters
| No. | Name | Unit | Value | ||
| 1 | Rated voltage | kV | 40.5 | ||
| 2 | Rated insulation level | 1min power frequency withstand voltage | Dry Test (fracture, phase-to-phase, to earth) | 95* | |
| Wet test (to earth, external insulation) | 80* | ||||
| Lightning impulse withstand voltage (peak) | 185* | ||||
| 3 | Rated current | A | 2000 | ||
| 4 | Rated short circuit breaking current | kA | 31.5 | ||
| 5 | Rated short-time making current(peak) | 80 | |||
| 6 | Rated operating sequence | 0-0.3sCO**-180s-CO** | |||
| 7 | Rated out-of-phase breaking current | kA | 8 | ||
| 8 | Rated single capacitor bank breaking current | A | 630 | ||
| 9 | Rated duration of short circuit | s | 4 | ||
| 10 | Rated short circuit breaking current breaking times | Time | 20 | ||
| 11 | Arcing time | ms | <20 | ||
| 12 | Total breaking time | ms | ≤85 | ||
| 13 | Mechanical endurance (CO) | Time | 10000 | ||
| 14 | Rated gas-charged pressure | Filling with SF6 when TD-40.5W/2000-31.5(K)vacuum arc extinguishing chamber is used | Mpa | 0.02(20℃) | |
| Filling with dry air or high purity nitrogen when TD-40.5W/2000-31.5(K)vacuum arc extinguishing chamber is used | |||||
| 15 | Yearly gas leakage rate | ％ | ≤1 | ||
| 16 | Vacuum degree of vacuum arcing chamber | Fresh-from-the factory arcing chamber | Pa | ≤1.33X10-3 | |
| Storage period of 20 years | < 6.6X10-2 | ||||
