Product Features
- Tysen-KLD online monitoring technology is used for online monitoring of the mechanical properties of the circuit breaker;
- Tysen-KLD modular spring operating mechanism technology is used to realize maintenance-free of mechanism;
- Vacuum interrupter solid-insulation-embedded pole manufactured by joint venture is used to ensure stable quality and excellent performance;
- The passivation surface treatment process of zinc-cobalt alloy hexavalent chromium in Malaysia shall be introduced, and the level of salt spray resistance test is up to 300 hrs;
- The German INA customized copper-based high-pressure alloy oil-free bearings are used to achieve self-lubrication of drive mechanism;
- Mechanical life of 30,000 cycles.
Structural Characteristics
- The VPN-12 intelligent vacuum circuit breaker uses Tysen-KLD modular spring operating mechanism, used with JVs's solid-insulation-embedded pole products, of which features are: high dielectric strength, little influence by environmental factors, smaller contact surface areas between conductors, and low loop resistance; at the same time technical advantages and strict quality management system on products of joint venture.
- The VPN-12 intelligent vacuum circuit breaker is applied with Tysen-KLD online monitoring technology to achieve real-time monitoring on the mechanical properties of the circuit breaker, which gives automatic alarm according to the relevant technical parameters monitored .
- The product can be used alone, or alternatively incorporated in the mid-set switchgear and fixed switchgear.
Main Specifications and Technical Parameters
Main Specifications and Technical Parameters of Circuit Breaker
| No. | Description | Unit | Parameters | ||
|---|---|---|---|---|---|
| 1 | Rated voltage | kV | 12 | ||
| 2 | Rated power frequency withstand voltage (1 min) | kV | 42/48 | ||
| 3 | Rated lightning impulse/fracture withstand voltage (peak) | kV | 75/85 | ||
| 4 | Rated frequency | Hz | 50 | ||
| 5 | Rated current | A | 630 1250 |
630、1250 1600、2000、2500 |
1250、1600、2000 2500、3150、4000* |
| 6 | Rated short-circuit breaking current | kA | 20 25 | 31.5 | 40 |
| 7 | Rated short-circuit making current | kA | 50 63 | 80 | 100 |
| 8 | Rated peak withstand current | kA | 50 63 | 80 | 100 |
| 9 | Rated thermal stability current (effective value) | kA | 20 25 | 31.5 | 40 |
| 10 | Rated short-circuit duration | s | 4 | ||
| 11 | Rated operations of short-circuit breaking current | Number of cycles | 30 | 30 | 20 |
| 12 | Mechanical life | Number of cycles | 30000 | 30000 | |
| 13 | Rated single/back to back capacitor bank breaking current | A | 630/400(40kA for 800/400) | ||
| 14 | Phase-to-phase | mm | below 1600A:210±1.5 above 2000A:275±1.5 |
||
| 15 | Allowable wearing accumulation thickness of dynamic and static contacts | mm | 3 | ||
| 16 | Time interval between opening of first and last phase of three phase circuit-breaker | ms | ≤ 2 | ||
| 17 | Bouncing time of contactor closed | ms | ≤2（40kA≤3） | ||
| 18 | Opening time | ms | 20-50 | ||
| 19 | Closing time | ms | 35-70 | ||
| 20 | Rated operating sequence | 0.3s 180s 0——CO——CO |
180s 180s 0——CO——CO |
||
| 21 | Actuator corrosion resistance (salt spray test) | h | 300 | ||
Note: *4000A requires forced air cooling.
Data shall be prevailed by the final manufactured products.
