ZW32-12 Switch Circuit Breaker
The ZW32-12 outdoor pole-mounted vacuum circuit breaker is a new generation product developed by our company in response to the new requirements of the State Grid for the integration of primary and secondary pole-mounted switches. The switch configuration fully meets the requirements of the State Grid for the integration of primary and secondary, which is convenient for the State Grid to purchase and mass produce. The switch has a compact structure, reasonable layout, complete functions, and all indicators meet the requirements of the State Grid for the integration of primary and secondary. It adopts protection CT, zero-sequence CT and zero-sequence voltage sensor with unified parameters, which has the characteristics of wide measurement range, high measurement accuracy and high reliability. The complete analog quantity facilitates accurate judgment of various line faults.
The ZW32-12 switch body is a pillar type, with a solid sealed vacuum arc chamber, silicone rubber encapsulation (as insulation and buffer), small size, encapsulated in an epoxy resin insulation cylinder, excellent anti-condensation performance, long working life and reliable performance. Its spring operating mechanism has been miniaturized and performance optimized, and its action reliability is much higher than that of traditional domestic spring mechanisms. It meets environmental protection requirements: no oil and SF6 gas, high anti-pollution level, beautiful, light and easy to transport. 1 external set of EVT, ECT (three-phase voltage, current, zero-sequence voltage, current, used for measurement, metering, and protection). 2 external electromagnetic single-phase power PTs, 10/0.1/0.22KV.
Working Condition:
Main Technical Parameters of Circuit Breaker:
| Project | Parameter | ||
| Rated Volatge | 12kv | ||
| Break insulation level | Power frequency (dry test) | 48kv | |
| Lightning impulse test voltage (peak value) | 85kv | ||
| Insulation level to ground and between phases | Power frequency | Dry Test | 42kv |
| Wet Test | 34kv | ||
| Lightning impulse test voltage (peak value) | 75kv | ||
| Rated current | 630A | ||
| Rated short-circuit breaking current | 25kA | ||
| Rated short-circuit breaking current breaking times | 30 Times | ||
| Rated short-time withstand current | 25kA | ||
| Rated short circuit duration | 4s | ||
| Rated short-circuit making current (peak value) | 63kA | ||
| Rated peak withstand current | 63kA | ||
| Mechanical life | 10000 Times | ||
| Rated current breaking times | 10000 Times | ||
| Net weight | 180kg | ||
Mechanical Characteristic Parameters:
| Project | Parameter |
| Contact opening distance | 9±1 mm |
| Contact travel | 2±0.5 mm |
| Contact closing bounce time (ms) | ≤ 2 ms |
| Conductive circuit resistance of each phase (μΩ) | ≤ 120μ Ω |
| Different opening phase (ms) | ≤ 2ms |
| Closing phase difference (ms) | ≤ 2ms |
| Average opening speed (m/s) | 0.8 ～ 1.2m/s |
| Average closing speed (m/s) | 0.4~0.8 m/s |
| Closing time | 20 ～ 60 ms |
| Opening time | 18 ～ 45 ms |
| Phase center distance | 340 mm |
| Energy storage motor rated power | ≯ 40 w |
| Rated voltage of energy storage motor | DC24 V |
| Rated opening and closing operating voltage | DC24 V |
If you didn’t know which switchgear system that used to your present project, it’s time to speak to our Industry Experts-Kimball. We’re glad to answer any questions you may have!
”From planning to delivery, it has been a smooth and gratifying transaction. The Dongshenyuan Electric team is quickly responsive, and the quality of DSY Switchgear are top-grade! In the end, they deliver as promised, and more. We look forward to a long-term partnership with them.”
Manufacturer Of Switchgear For Power Distribution and Electricity Generation System In China for 20 years
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