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| Place of Origin: | China |
| Brand Name: | Metalwork |
| Certification: | CE, ISO, CCC |
| Model Number: | 3AV5-12/1250-31.5 |
| Minimum Order Quantity: | 1 set |
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| Price: | Negotiable |
| Packaging Details: | Plywooden package |
| Delivery Time: | 20 days |
| Payment Terms: | L/C, T/T |
| Supply Ability: | 100 sets per month |
| Model: | 3AV5-12/1250-31.5 | Breaking Capacity: | 31.5KA |
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| Rated Voltage: | 12KV | Rated Current: | 1250A |
| Mechanical Life: | 10000 Times | Motor Voltage: | DC/AC 110V 220V |
| Types: | Withdrawable, Stationary, Side-mounted | Warranty: | 1 Year |
| High Light: | Vacuum Circuit Breaker Withdrawable,Vacuum Circuit Breaker 1250A,220V Vacuum Circuit Breaker |
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3AV5 series indoor AC high-voltage vacuum circuit breaker is an indoor switching equipment with three-phase AC 50HZ and rated voltage 12KV. There are three kinds, withdrawable type, stationary type and side-mounted type.
3AV5-12 indoor high-voltage vacuum circuit breaker adopts solid sealing insulation technology of ABB and SIEMENS. The vacuum arc extinguishing chamber and other parts of the primary circuit are sealed with epoxy resin material to form high insulation and high mechanical strength pole, which avoids the influence of harsh operating environment on the outer insulation of the primary circuit and realizes complete maintenance-free. Optimized spring operation mechanism, simple structure, stable performance, for industrial and mining enterprises, power plants and substations as electrical equipment control and protection, and suitable for frequent operation places.
3AV5 type side mounted vacuum circuit breaker adopts fixed installation, mainly used for fixed switchgear, such as ring network cabinet, box type substation or various non-standard power supply system. The main loop adopts solid sealing pole, miniaturized operation panel, and saves space in the cabinet.
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 | 50~60 | |||
| Rated short-circuit breaking current | KA | 20 | 25 | 31.5 | 40 |
| Rated current | A |
630 1000 1250 |
630 1000 1250 1600 |
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 O－180S－CO－180S－CO (at 40KA) |
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Rated single/back-to-back capacitance bank breaking current Set breaking current
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A | 630/400 (40KA 800/400) | |||
| Rated short-circuit breaking current DC flow percentage | ≤35% | ||||
| Opening time (rated voltage) | ms | 20-50 | |||
| Closing time (rated voltage) | ms | 30-70 | |||
| Mechanical life | times | 20000 | |||
| Rated short-circuit breaking current breaking times | times | 50 (40KA 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 | 80 | |||
| Contact opening distance | mm | 11±1 | |||
| Contact stroke | mm | 3.5±1 | |||
| Contact bounce time | ms | ≤2 (40KA ≤3) | |||
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Three - phase opening and closing heterogeneity |
ms | ≤2 | |||
| Average closing speed *1 | m/s | 0.9-1.3 | |||
| Average closing speed*2 | m/s | 0.4-0.8 | |||
| Main circuit resistance | μΩ |
≤50 (630A) ≤45 (1250A) ≤35 (1600-2000A) ≤25 (above 2500A) |
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Contact Person: Mrs. Mary Ji
Tel: 0086-15370218084
Fax: 86-510-88531210
