The China VD4 series vacuum circuit-breakers are devices for indoor switchgear installation. Please contact ROCKWILL for special installation requirements. VD4-R series medium voltage vacuum circuit breakers with lateral operating mechanism for indoor installation feature the separate pole construction technique. Each pole houses a vacuum interrupter which is encased in the resin when the cylinder is moulded thanks to a special manufacturing process. This construction method protects the vacuum interrupter from shock, pollution and condensation.
VCB VS1 12kV 630A Indoor High-voltage Vacuum Circuit Breaker:
Interphase distance:210mm
Handcart type
Double spring operating mechanism
Applicable place: (particularly to the places needing frequent operation)
1.the electrical equipment control and protection in industrial.
2.mining enterprises.
3.power plants.
4.substations.
It can be fixed in a switch cabinet or installed on a handcart.
Stable performance and easy installation.
Vacuum Circuit Breaker Advantages
1.Simple structure.
2.Adapt ultra low resistance type vacuum interrupter.
3.Adapt optimization and modular spring operating mechanism.
4.Suitable for occasions with frequent operation.
5.Free maintenance and long service life.
6.High reliable performance.
Environmental Conditions
Ambient temperature: - 40°C~+40°C (below 35°C within 24 hours)
Relative humidity: ≤95% (daily average) or ≤90% (monthly average)
Altitude: ≤ 1000m
| Vacuum circuit-breaker | **4/R 12 | **4/R 17 | **4/R 24 | |||||||
| Standards | * | * | * | |||||||
| Rated voltage | Ur(kV) | 12 | 17.5 | 24 | ||||||
| Rated insulation voltage | Us(kV) | 12 | 17.5 | 24 | ||||||
| Withstand voltage at 50Hz | Ud(kV) | 28 | 38 | 50 | ||||||
| Impulse withstand voltage | Up(kV) | 75 | 95 | 125 | ||||||
| Rated frequency | fr(Hz) | 50-60 | 50-60 | 50-60 | ||||||
| Rated thermal current | Ir(A) | 630 | 800 | 1250 | 630 | 800 | 1250 | 630 | 800 | 1250 |
| Rated duty breaking capacity (symmetrical rated short-circuit current) |
Isc(kA) | 12.5 | / | / | 12.5 | / | / | 12.5 | / | / |
| 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | ||
| 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | ||
| 25 | 25 | 25 | 25 | 25 | 25 | / | / | / | ||
| Short-time withstand current(3s) | Ik(kA) | 12.5 | / | / | 12.5 | / | / | 12.5 | / | / |
| 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | ||
| 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | ||
| 25 | 25 | 25 | 25 | 25 | 25 | / | / | / | ||
| Making capacity | Ip(kA) | 31.5 | / | / | 31.5 | / | / | 31.5 | / | / |
| 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | ||
| 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | ||
| 63 | 63 | 63 | 63 | 63 | 63 | |||||
| Making capacity | * | * | * | |||||||
| Opening time | ms | 40...60 | 40...60 | 40...60 | ||||||
| Arcing time | ms | 10...15 | 10...15 | 10...15 | ||||||
| Total break-time | ms | 50...75 | 50...75 | 50...75 | ||||||
| Closing time | ms | 30...60 | 30...60 | 30...60 | ||||||
| Code | Available versions | |||||||||
| Closing pushbutton | **4circuit-breakers with lateral operating mechanism are available in the following versions: |
|||||||||
| Open/closed indicator | ||||||||||
| Discharged | Center-distance P=()mm | Fixed | Removable | |||||||
| Operation counter | 210 | 210 | ||||||||
| Manually charging handle | 230 | 230 | ||||||||
| Opening pushbutton | 250 | 250 | ||||||||
| Protection relay | 275 | 275 | ||||||||
| Delivery terminal box | 300 | 300 | ||||||||
| Current transformer | 310 | 310 | ||||||||
| Polo | ||||||||||
By Rita from Cancun - 2017.06.22 12:49
By Ray from Swansea - 2018.08.12 12:27
