ZW32-12 series outdoor high-voltage pole mounted vacuum circuit breakers are suitable for high-voltage power distribution systems with a rated voltage of 12kV and three-phase AC 50Hz, and are specifically used for the breaking and closing of load current, overload current and short-circuit current in power systems. The equipment is widely used in substations, industrial and mining enterprises, urban and rural power networks and other occasions, especially suitable for frequent operation environments and distribution network automation fields.
Product features
Efficient breaking and protection: Meet IEC62271-100 and GB1984 standards, and provide three-level protection of overcurrent delay, impact current delay, and short-circuit quick break.
Intelligent reclosing function: Support automatic reclosing and fault isolation to improve power supply reliability.
Modular design: Circuit breaker and disconnector combination, with excellent rain, snow and corrosion resistance.
Diversified configuration: Optional lightning arrester, inrush current controller and metering transformer, suitable for different application scenarios.
Independent power supply support: Built-in PT power supply, suitable for occasions without external power supply.
Ambient Condition
1.Altitude:<2000mm;
2.Ambient temperature:-40℃~+45℃
3.Wind speed:34m/s;
4.Earthquake intensity:<8 degree;
5.Ambient pollution:IV;
6.Ice thickNess:10mm;
7.Applicable occasions should be free from inflammables,explosives,corrosives and severe vibrations.
Applicable scenarios
Applicable to substations, power industrial and mining enterprises, urban and rural power networks and frequently operated power systems.
It can be customized as an intelligent recloser controller according to on-site needs, especially suitable for radial and ring network power supply systems, to ensure rapid recovery and fault isolation of instantaneous faults.
Technical Parameters
| No | Name | Unit | Data | ||
| 12kV | |||||
| 1 | Rated voltag | kV | 12 | ||
| 2 | Rated current | A | 630、1250 | ||
| 3 | Rated insulating level |
1min.PF withstand voltage | dry | kV | across open:42 contacts:48 |
| wet | 34 | ||||
| 4 | Lightning impulse withstand voltage(peak) | kV | Interphase, to ground 75, break 85 | ||
| 5 | Rated short-circuit breaking curren | kA | 20、25 | ||
| 6 | Rated short-circuit making current (peak) | kA | 50、63 | ||
| 7 | Rated peak withstand current | kA | 50、63 | ||
| 8 | 4s rated short-time withstand current | kA | 20、25 | ||
| 9 | Rated operating sequence | O-0.3s-CO-180s-CO | |||
| 10 | Breaking times of rated short-circuit breaking current | 次times | 30 | ||
| 11 | Mechanical duration | 次times | 10000 | ||
| 12 | Rated voltage of energy storage motor | V | DC or AC220、DC110、48、24 | ||
| 13 | Rated operation voltage | V | DCor AC220、DC110、48、24 | ||
| 14 | Abrasions thickNess of contacts | mm | 3 | ||
| 15 | Rated current of over-current release | A | 5 | ||
| 16 | Current transformer ratio | 200/5,400/5,600/5 Protection degree:III class,Class:0.5) |
Outline Dimension And Installation Drawing
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