Detailed Product Description
High Voltage Vacuum Circuit Breaker (VCB)(ZW7-40.5 Series)
General
ZW7-40.5 outdoor high voltage electrical equipments on three phase AC 50Hz. It is used for controlling and protecting 24-40.5kv transmission and distribution systems . it can also be used for network interconnecting breaker and switching capacitor bank . matching with segmentation controllers and automatic circuit reclosers, the product realizes intellectulized segmentation and reclose control of power systems . annexing a current transformeer inside , it provides measurement and protection . matching with spring or electromagnetism operating mechanisems , the breaker has high reliability of mechanical property and can be operated frequently . it has no burning and explosion hazard . the breaker conforms to standards of IEC62271-100 HV AC breaker. The breakers main features: excellent break performance , long mechanical life up to 10000 times , simple structure , non maintenance , excellent insulating property and strong anti soil performance . According to customers requests , it can install current transformers inside . the measuring accuracy will be level of 0.2 . And it realizes three phase interaction protection .
Main Technical Parameter
| Item | Unit | Parameter | |||||
| Rated voltage(kA) | kV | 15 | 24 | 36 | 40.5 | ||
| Rated current(A) | A | 1000 | 1250 | 1600 | 2000 | ||
| Rated short-circuit close current | KA | 16 | 20 | 25 | 31.5 | ||
| Rated shorcircuit close current (peak value) | kV | 50 | 63 | 80 | |||
| Rated peak value withstand current | kV | 50 | 63 | 80 | |||
| 4S Rated short time withstand current | kV | 20 | 25 | 31.5 | |||
| Rated insulation lever | Power frequency withstand voltage | kV | 50 | 60 | 70 | 95 | |
| Lightning impulse withstand voltage | kv | 110 | 150 | 170 | 185 | ||
| Rated operation order | O-0.3S-CO-180S-CO | ||||||
| Mechanical life-span | times | 10000 | |||||
| Rated short-circuit current break and close times | times | 12 | |||||
| Touch the head and shut a floodgate of time of bouncing | ms | ≤2 | |||||
| Average speed of breaking brake | ms | 1.5±0.2 | 1.5±0.2 | 1.5±0.2 | 1.5±0.2 | ||
| Average speed of closing brake | ms | 0.7±0.2 | 0.7±0.2 | 0.7±0.2 | 0.7±0.2 | ||
| Time of breaking | ms | ≤70 | ≤70 | ≤70 | ≤60 | ||
| Time of closing brake | ms | ≤145 | ≤145 | ≤150 | ≤150 | ||
| Each the resistance of main return circuit | μΩ | ≤100 | |||||
| Allowance abrasion cumulated thickness of the moving and stationary contact | mm | 3 | |||||
| Weight | kg | 400 | 600 | 750 | 800 | ||
