Zw43-12 Series Outdoor High Voltage AC Vacuum Circuit BreakerZw43-12 series intelligent outdoor high-voltage AC vacuum circuit breaker (hereinafter referred to as "intelligent circuit breaker&quo
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Zw43-12 Series Outdoor High Voltage AC Vacuum Circuit Breaker
Zw43-12 series intelligent outdoor high-voltage AC vacuum circuit breaker (hereinafter referred to as "intelligent circuit breaker"), which is an outdoor power distribution switchgear with a rated voltage of 12kV and three-phase AC 50Hz, mainly consists of ZW43-12 outdoor high-voltage AC vacuum circuit breaker body, DK series distribution automation feeder terminal, external voltage transformer, and control cable, etc. Arrester, single-side disconnector, or double-side disconnector can be installed according to user needs.
ZW43-12C outdoor high-voltage AC vacuum recloser has overload and short circuit protection, quick break protection, definite time-delay protection, and automatic recloser functions, effectively ensuring the good operation of the line.
ZW43-12F outdoor high-voltage AC boundary vacuum circuit breaker has a remote management mode, protection control function, and communication function, which can be reliably judged. The detection boundary is used for control and protection in substations, industrial and mining enterprises, and urban and rural power grids. It is especially suitable for places requiring frequent operation and urban milliampere zero sequence current and interphase fault short circuit current, which can automatically remove single-phase ground fault and interphase short circuit fault.
The intelligent circuit breaker complies with the technical standards such as High Voltage AC Circuit Breaker (GB/T1984-2014), High Voltage AC Circuit Breaker (DL/T402-2016), Technical Conditions for Ordering 12kV~40.5kV High Voltage Vacuum Circuit Breaker (DL/T403-2000) and Remote Terminal of Distribution Automation System (DL/T721-2013).
Applicable conditions
Ambient air temperature: upper limit +40°C, lower limit -40^C;
Altitude: less than 3000m;
Wind pressure: no more than 700Pa(equivalent to 34m/s wind speed);
Air pollution level: no more than Grade IV;
The thickness of ice cover: no more than 10mm;
No danger of fire, explosion, chemical corrosion and violent vibration
MAIN TECHNICAL PARAMETERS
| No. | Item | Unit | Data | ||
| 1 | Rated frequency | Hz | 50 | ||
| 2 | Rated voltage | kV | 12 | ||
| 3 | Rated current | A | 630 | 1250 | |
| 4 | Rated short-time power frequency withstand voltage | Interphase, to earth(wet) | kV/min | 34/1 | |
| Interphase, to earth(dry) | 42/1 | ||||
| Fracture (dry) | 48/1 | ||||
| Secondary circuit to earth | 2/1 | ||||
| 5 | Rated lightning impulse withstand voltage | Interphase, to earth | kV | 75 | |
| Fracture | 85 | ||||
| 6 | Rated short-circuit breaking current | kA | 20/25 | ||
| 7 | Rated short-circuit making current(peak) | 50/63 | |||
| 8 | Rated short-time withstand current and duration | kA/s | (20/25)/4 | ||
| 9 | Rated peak withstand current | kA | 50/63 | ||
| 10 | Rated short-circuit breaking current breaking times | Times | 30 (E2 Level) | ||
| 11 | Main circuit resistance | μΩ | ≤80, ≤120, ≤160 | ||
| 12 | Rated Operating Voltage and Rated Voltage for auxiliary(control) circuit | V | AC/DC220,DC48,DC24 | ||
| 13 | Mechanical life | Times | 10000 (M2 level) | ||
| Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate. | |||||
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