ZW32 series Pole Mounted Vacuum Circuit Breaker spring mechanism
outdoor vacuum breaker, a kind of outdoor pillar high voltage
vacuum circuit breaker, with 50/60Hz, three-phase alternating
current and 15/27/38KV rated voltage. It applies to open circuit ,
close the load current , overload current and short -circuit
current and other power distribution system, such as
substation,industrial and mining.
Normal service condition:
1. Altitude≤2000(optional≤4000)
2. Ambient temperature: -30℃ to 70℃(optional -40℃ to 70℃)
3. Ambient humidity:Maximum average humidity 24 hours ≤95%1 month
≤90%
4. Maximum water vapor pressure:24 hours ≤2.2kpa1 month ≤1.8kpa
5. The ambient air has no obvious pollution of dust smoke,
corrosive or combustible gases, steams or smog
Features
1. high reliability, high mechanical and electrical life
2. No maintenance
3. Small size, lightweight, easy to install
4. Standard relay protection and quick automatic reclosing function
Technical Parameters
| No. | Item | Unit | Date |
| 1 | Rated voltage | KV | 12/15/17.5 | 24/25.8/27 | 36/38 |
| 2 | Rated current | A | 630/800/1250/1600 |
| 3 | Rated frequency | Hz | 50/60 |
| 4 | Power frequency | Dry(1 min.) | KV | 50 | 60 | 70 |
| | Wet(10 sec.) | | 45 | 50 | 60 |
| 5 | Lighting impulse withstand voltage | KV | 110 | 150 | 170 |
| 6 | Phase spacing |
mm | 250 | 320 | 394 |
| 7 | External creep distance, H2-ground | | 510 | 796 | 1486 |
| 8 | External creep distance, H1-H2 | | 729 | 1017 | 1344 |
| 9 | Min. External strike distance | | 221 | 284 | 448 |
| 10 | Min. interrupting time | sec | 0.050 |
| 11 | Max. closing time | sec | 0.070 |
| 12 | Insulating material | | Epoxy |
| 13 | Ambient temperture | ℃ | -30 to 70(Optional -40 to 70) |
| 14 | Humidity | % | ≤100 |
| 15 | Degree of protection | | IP65 |
| 16 | Rated operating | | O-0.3s-CO-1s-CO-1s-CO-lockout |
| 17 | Rated control voltage | | AC100-240V/DC24V |
| 18 | Applied Standard | | IEC 602271-111 |
| 19 | Mechanism life | times | 10000 |
