Since 1991
1.Installation way: foundation installation;
2.Operating mechanism: spring operating mechanism and electromagnetic operating mechanism;
3.Pole material: rubber silicone, ceramic;
4.Application: outdoor 33kV substation, power plant.
5.Current transformer: internal installation, external installation.
Summary
ZW7-40.5 outdoor HV vacuum circuit breaker is a 3-phase AC 50Hz 40.5kV outdoor switch equipment.
1.Installation way: foundation installation;
2.Operating mechanism: spring operating mechanism and electromagnetic operating mechanism;
3.Pole material: rubber silicone, ceramic;
4.Application: outdoor 33kV substation, power plant.
5.Current transformer: internal installation, external installation.
※ Product Standards
1.IEC62271-100 High Voltage Switchgear and Controlgear Part 100: AC Circuit-breakers
2.GB1984 High Voltage AC Circuit-breakers
3.GB/T11022 Common Specifications for High-voltage Switchgear and Controlgear Standards
4.JB/T 3855 High Voltage AC Vacuum Circuit-breakers
5.DL/T402 Specification of High-voltage AC Circuit-breakers
※ Environmental Conditions
1.Ambient temperature: -40℃~+40℃;
2.Altitude: ≤1000m;
3.Maximum wind speed is 10km/h, minimum wind speed for the rated level (132/230kv) is 3.2km/h;
4.Earthquake intensity: ≤8 level;
5.Minimum nominal creepage distance: 31mm/kV;
6Air pollution degree: Class IV.
Technical Specifications
| No. | Item | Units | Parameters | ||
| 1 | Rated voltage | kV | 40.5 | ||
| 2 | Rated insulation level |
1min power frequency withstand voltage |
dry | 95 | |
| wet | 80 | ||||
| Lightning impulse withstand voltage (peak) | 185 | ||||
| 3 | Rated current | A | 1250、1600、2000 | ||
| 4 | Rated short-circuit breaking current | kA | 20、25、31.5 | ||
| 5 | Rated operating sequence | O－0.3s -CO- 180s-CO | |||
| 6 | Rated short-circuit breaking current breaki ng times | Times | 12 | ||
| 7 | Rated short- circu it closed current (peak) | kA | 50、63、80 | ||
| 8 | Rated peak withstand curren t | ||||
| 9 | Rated short-time withstand current | kA | 20、25、31.5 | ||
| 10 | Rated short-circuit duration | S | 4 | ||
| 11 | Average opening speed | m/s | 1.5 ± 0.2 | ||
| 12 | Average closing speed | 0.7 ±0.2 | |||
| 13 | Contact closing bounce duration | s | ≤2 | ||
| 14 | Three phase closing and opening synchronism | ≤2 | |||
| 15 | Opening time | ≤150 | |||
| 16 | Closing time | ≤60 | |||
| 17 | Mechanism life | Times | 10000 | ||
| 18 | Rated operating voltage and aux ilia ry loop rated voltage | V | DC220 、1 10 、24 | ||
| AC220 、110 、24 | |||||
| 19 | Phase loop DC resistance (without current transformer） | uΩ | 100 | ||
| 20 | Permitted accumulate wear－thickness of dynamic and static contact | mm | 3 | ||
Model Implication
Overall Dimensions
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