This VZP1-12 vacuum circuit breaker is developed with international progressive technology by a specialized switchgear manufacturer of Germany. With compact structure, it needs a small amount of spare parts. This is a good solution of keeping its stable performance in the automatic distribution system.
This component plays an important role in the distribution system and it is mainly in charge of wire connection, fault current interruption, proper control and protection for the electric equipment in the industrial and mining companies, power plants and substations.
As the manipulating system and the interrupter are installed in the front and rear respectively, the vacuum circuit breaker can be classified into two types including the fixed type and the detachable type. Meanwhile, the fixed type can provide reinforced interlocking performance to facilitate the assembly with the fixed switchgear panels.
Technical Specifications| No. | Item Description | Unit | Data | ||
| 1 | Rated Voltage | kv | 12 | ||
| 2 | Rated Current | A | 630,1250,1600,2000,2500,3150,4000 | ||
| 3 | Rated Frequency | Hz | 50/60 | ||
| 4 | Rated Insulation Level | Lightning impulse withstand voltage | Phase to phase/Phase to earth | kv | 75 |
| Between open contacts | 85 | ||||
| 1 min power frequencywithstand voltage | Phase to phase/Phase to earth | 42 | |||
| Between open contacts | 48 | ||||
| 5 | 4s rated short-time withstand current | kv | 20,25,31.5,40 | ||
| 6 | Rated short- circuit breaking current | 20,25,31.5,40 | |||
| 7 | Rated peak withstand current | 50,63,80,100 | |||
| 8 | Rated short- circuit making current | 50,63,80,100 | |||
| 9 | Rated single/back-to-back capacitor bank breaking current | A | 630/400 | ||
| 10 | Rated operating sequence | o-0.3s-co-180s-co(below 40kA)o-180s-co-180s-co(40kA) | |||
| 11 | Breaking time of rated short-circuit breaking current | Times | 30 | ||
| 12 | Mechanical life | Times | 20000 | ||
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