VS1 Electrical Equipment Vacuum Circuit Breaker 12kv 50hz Three Phase Power 630A
VS1-12 Vacuum Circuit Breaker
VS1 (ZN63A) type indoor high-voltage vacuum circuit breaker is the rated voltage 12KV, 24KV, three-phase AC 50HZ indoor high-voltage switchgear, equipped with the motor ---- spring operating mechanism, can realize electric and manual switching and closing, can be loaded into the hand switchgear, can also be matched with the fixed switchgear. The fixed circuit breaker can be added with special interlock to meet the needs of fixed cabinets such as XGN2 and GG1A. At the same time, 24KV vacuum circuit breaker can also be applied to 12KV distribution system in plateau areas (up to 4000 meters above sea level).
Main features of VS1-12KV indoor high voltage vacuum circuit breaker:
1. It is convenient for adjustment due to the vacuum circuit breaker adopt the design of arcing chamber is located on the upper, the operating mechanism is located on the down.
2. It adopt the structure of combination of air and organic composite insulating material.
3. Simple spring operating mechanism, 10000 operating times.
4. Smooth and good self-locking performance due to lead-screw propulsion mechanism.
Technical Parameters:
| Items | Unit | Date | |||
| Rated voltage |
KV |
12 | |||
| Rated impulse withstand voltage | 75 | ||||
| Rated short-time power frequency withstand voltage (1min) | 42 | ||||
| Rated frequency | Hz | 50 | |||
| Rated short-circuit breaking current | KA | 20 | 25 | 31.5 | 40 |
| Rated current | A |
630 1250 |
630 1250 |
1250 1600 2000 2500 |
1600 2000 2500 3150 4000 |
| Rated short-time withstand current | KA | 20 | 25 | 31.5 | 40 |
| Rated peak tolerable current | 50 | 63 | 80 | 100 | |
| Rated short-circuit making current (peak value) | 50 | 63 | 80 | 100 | |
| Secondary circuit power frequency withstand voltage (1min) | V | 2000 | |||
| Rated operation sequence | O－0.3S－CO 180S－CO | ||||
| Rated duration of short circuit current | S | 4 | |||
|
Rated single/back-to-back capacitance bank breaking current Set breaking current |
A | 630/400 (40KA is 800/400) | |||
| Rated capacitor bank Inrush making current | KA | 12.5 (Frequency≤1000Hz) | |||
| Opening time (rated voltage) | ms | 20～50 | |||
| Closing time (rated voltage) | ms | 35～70 | |||
| Mechanical life | times | 10000 | |||
| Rated short-circuit breaking current breaking times | times | 50 (40KA is 30) | |||
| Allowable wear accumulate thickness of moving and static contacts | mm | 3 | |||
| Rated closing operating voltage | v | AC110/220 DC110/220 | |||
| Rated opening operating voltage | v | AC110/220 DC110/220 | |||
| Rated voltage of energy storage motor | v | AC110/220 DC110/220 | |||
| Rated power of energy storage motor | w | 70 | |||
| Energy storage time | s | ≤15S | |||
| Contact opening distance | mm | 11±1 | |||
| Contact stroke | mm | 3.5±1 | |||
| Contact bounce time | ms | ≤2 (40KA≤3) | |||
|
Three - phase opening and closing heterogeneity |
ms | ≤2 | |||
| Average opening speed (front 8mm) | m/s | 0.9～1.3 | |||
| Average closing speed | m/s | 0.5～0.8 (40KA is 0.5～0.9) | |||
| Opening contact rebound amplitude | ms | ≤3 | |||
| Main circuit resistance | Ω |
≤50(630A) ≤45(1250A) ≤35(1600～2000A) ≤25(above 2500A) |
|||
| Closing contact pressure | N | 2400±200 (25KA) | |||
| 3100±248 (31.5KA) 4250±250 (40KA) | |||||
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