? Installation way: foundation installation;
? Operating mechanism: spring operating mechanism and electromagnetic operating mechanism;
? Pole material: rubber silicone, ceramic;
? Application: outdoor 33kV substation, power plant.
? 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.
? Installation way: foundation installation;
? Operating mechanism: spring operating mechanism and electromagnetic operating mechanism;
? Pole material: rubber silicone, ceramic;
? Application: outdoor 33kV substation, power plant.
? Current transformer: internal installation, external installation.
※ Product Standards
? IEC62271-100 High Voltage Switchgear and Controlgear Part 100: AC Circuit-breakers
? GB1984 High Voltage AC Circuit-breakers
? GB/T11022 Common Specifications for High-voltage Switchgear and Controlgear Standards
? JB/T 3855 High Voltage AC Vacuum Circuit-breakers
? DL/T402 Specification of High-voltage AC Circuit-breakers
※ Environmental Conditions
? Ambient temperature: -40℃~+40℃;
? Altitude: ≤1000m;
? Maximum wind speed is 10km/h, minimum wind speed for the rated level (132/230kv) is 3.2km/h;
? Earthquake intensity: ≤8 level;
? Minimum nominal creepage distance: 31mm/kV;
? Air 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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