ZW7 Outdoor 40.5kV Three-Phase Vacuum Circuit Breaker
The ZW7-40.5 is a three-phase AC 50Hz, rated voltage 40.5kV (35kV) porcelain-column type outdoor high-voltage vacuum circuit breaker. It is mainly used in outdoor substations and 35kV transmission and distribution lines to close and interrupt load current, overload current, and short-circuit current. It can also be used as a bus tie switch and for switching capacitor banks. Its oil-free design makes it suitable for outdoor substation installation. The entire unit consists of three-phase poles (upper porcelain bushing + lower support porcelain bushing), vacuum interrupter, current transformer, transmission system, operating mechanism, sealed mechanism box, and steel base frame. It is available in porcelain-column type, common-tank type, and composite-insulated pole type. Our products are available in various current and voltage options.
Product Details
Feature
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- High safety and environmental protection coefficient: Oil-free vacuum arc extinguishing, environmentally friendly, suitable for outdoor substation installation.
- Low maintenance cost: Porcelain column open structure, clear primary circuit, convenient for substation inspection and visual checks.
- High product integration: Built-in CT, integrated measurement and protection, reducing equipment footprint.
- Good practicality and adaptability to various outdoor environments: Moisture-proof and heated mechanism box, adaptable to large temperature differences between day and night and humid outdoor environments.
- Maintenance-free arc extinguishing chamber: Routine checks only require lubrication of the mechanism, heater, and cleaning of porcelain bushings, minimizing maintenance workload.
- Remote operation technology: Can be connected to the substation secondary control system for remote control and protection tripping, compatible with integrated automation systems.
- Ambient temperature: -30℃±40℃
- Altitude: Not exceeding 2500m
- Wind pressure: Not exceeding 700Pa (equivalent to wind speed 34m/s)
- Air pollution level: Level IV
- Seismic intensity: Not exceeding 8 degrees
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Maximum daily temperature range: Not exceeding 25°C
For customizing any other special sizes, please contact our salesman for more information.NO
Name
Unit
Data
1 Rated Voltage
kV
40.5 2 Rated frequency
Hz
50
3 Rated current
A
630/1250/1600/2000
4 Rated short-circuit breaking current
kA
20/25/31.5
5 Operating voltage
V
AC/DC110/220
6 Weight
KG
800
Previous: 12kV Indoor Side-Mounted Vacuum Circuit Breaker
Next: 12kV Outdoor Vacuum Circuit Breaker ZW32
