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ZW32-40.5 outdoor high-voltage vacuum circuit breaker is an outdoor high-voltage distribution equipment with a rated voltage of 12kV and three-phase AC 50Hz. Mainly used for breaking and closing load current, overload current, and short-circuit current in power systems.
General
ZW32-40.5 outdoor high-voltage alternating-current vacuum circuit breaker is a new outdoor high-voltage alternating-current switchgearof our vacuum circuit breaker series.Its rated voltage is 40.5kV.It applies to places with such voltage level,including overhead lines,industrie'and mining enterprises,power stations,substations,etc.Under its normal operating condtions and specified technical parameters,it can satist,the system protection requirements of the grid.It is characterized by automatic re-making,stable operation and long electric life.
Product standards
zW32-40.5 outdoor high-voltage alternating-current vacuum circuit breaker is produced in line with the following standards and codes.
● IEC 62271-100 High-voltage switchgear and controlgear
● GB/T 11022-2011 Common specifications for high-voltage switchgear and controlgear standards
● GB 1984 High-voltage alternating-current circuit-breakers
●GB 311.1 Insulation co-ordination for high voltage transmission and distribution equipment
Operating conditions
Normal operating conditions
● Ambient temperature:-40℃~+40℃
● Altitude:≤2000m
● Relative humidity:≤95%(daily average)or ≤90%(monthly average)
● Wind speed:≤34m/s (equivalent to a pressure of 700pa on a cylindrical surface)
● Pollution grade:≤IV
Technical parameters
1.1 Technical parameters
| Item | Unit | Reference value |
| Rated voltage | kV | 40.5 |
| Lightning impulse withstand voltage | kV | 185 |
| Rated insulation level 1min power-frequency withstand voltage | kV | 95 |
| Rated frequency | Hz | 50/60 |
| Rated current | A | 630/1250/1600/2000/2500 |
| Rated short-circuit breaking current | kA | 20/25/31.5 |
| Rated short-circuic making current (peak value | kA | 50/63/80 |
| Rated short-time withstand current | kA | 20/25/31.5 |
| Rated withstand current (peak value) | kA | 50/63/80 |
| Rated operation sequence | 0-0.3s-CO-180s-CO | |
| Rated short-circuit duration | 5 | 4 |
| Times of making-breaking with the rated shart-circuit current | Times | 30 |
| Mechanical life | M2 leve | |
| Weight | kg | 280 |
1.2 Mechanical parameters
| Item | Unit | Reference value |
| Gap of contacts | mm | 17±1 |
| Contact overtravel | mm | 4±1 |
| Average making speed | m/s | 0.6±0.2 |
| Average breaking speed | mvs | 1.2±0.2 |
| Bounce time in contact making | ms | ≤3 |
| Non-synchronous making/breaking of contact | ms | ≤2 |
| Resistance of the circuit of each phase | u Q | Main switch≤100Isolating switch≤60 |
| Permissible total wear thickness of the moving/fixed contact | mm | 3 |
Overall dimension of ZW32M-40.5
General
ZW32-40.5 outdoor high-voltage alternating-current vacuum circuit breaker is a new outdoor high-voltage alternating-current switchgearof our vacuum circuit breaker series.Its rated voltage is 40.5kV.It applies to places with such voltage level,including overhead lines,industrie'and mining enterprises,power stations,substations,etc.Under its normal operating condtions and specified technical parameters,it can satist,the system protection requirements of the grid.It is characterized by automatic re-making,stable operation and long electric life.
Product standards
zW32-40.5 outdoor high-voltage alternating-current vacuum circuit breaker is produced in line with the following standards and codes.
● IEC 62271-100 High-voltage switchgear and controlgear
● GB/T 11022-2011 Common specifications for high-voltage switchgear and controlgear standards
● GB 1984 High-voltage alternating-current circuit-breakers
●GB 311.1 Insulation co-ordination for high voltage transmission and distribution equipment
Operating conditions
Normal operating conditions
● Ambient temperature:-40℃~+40℃
● Altitude:≤2000m
● Relative humidity:≤95%(daily average)or ≤90%(monthly average)
● Wind speed:≤34m/s (equivalent to a pressure of 700pa on a cylindrical surface)
● Pollution grade:≤IV
Technical parameters
1.1 Technical parameters
| Item | Unit | Reference value |
| Rated voltage | kV | 40.5 |
| Lightning impulse withstand voltage | kV | 185 |
| Rated insulation level 1min power-frequency withstand voltage | kV | 95 |
| Rated frequency | Hz | 50/60 |
| Rated current | A | 630/1250/1600/2000/2500 |
| Rated short-circuit breaking current | kA | 20/25/31.5 |
| Rated short-circuic making current (peak value | kA | 50/63/80 |
| Rated short-time withstand current | kA | 20/25/31.5 |
| Rated withstand current (peak value) | kA | 50/63/80 |
| Rated operation sequence | 0-0.3s-CO-180s-CO | |
| Rated short-circuit duration | 5 | 4 |
| Times of making-breaking with the rated shart-circuit current | Times | 30 |
| Mechanical life | M2 leve | |
| Weight | kg | 280 |
1.2 Mechanical parameters
| Item | Unit | Reference value |
| Gap of contacts | mm | 17±1 |
| Contact overtravel | mm | 4±1 |
| Average making speed | m/s | 0.6±0.2 |
| Average breaking speed | mvs | 1.2±0.2 |
| Bounce time in contact making | ms | ≤3 |
| Non-synchronous making/breaking of contact | ms | ≤2 |
| Resistance of the circuit of each phase | u Q | Main switch≤100Isolating switch≤60 |
| Permissible total wear thickness of the moving/fixed contact | mm | 3 |
Overall dimension of ZW32M-40.5