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Product Overview
ZW32-12 outdoor pole-mounted vacuum circuit breaker is a product developed by our company in response to the State Grid's primary and secondary integration complete set of pole-mounted switches. The switch configuration meets the State Grid's primary and secondary integration requirements, 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 State Grid's primary and secondary integration requirements; it uses unified parameter protection CT, zero-sequence CT and zero-sequence voltage sensor, which has the characteristics of wide measurement range, high measurement accuracy and high reliability. The complete analog quantity is convenient for accurate judgment of various line faults.
ZW32-12 switch body is pillar-type, with solid sealed vacuum arc chamber, silicone rubber encapsulation (as insulation and buffer), small size, encapsulated in 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 the action reliability is much higher than that of traditional domestic spring mechanisms. Meet environmental protection requirements: no oil and SF6 gas, high anti-pollution level, beautiful, light and easy to transport. One external set of EVT and ECT (three-phase voltage, current, zero-sequence voltage, current, for measurement, metering and protection).
Model meaning
Environmental conditions for use
1. Ambient air temperature: -40°C~ +80°C;
2. Altitude: not more than 3000m;
3. Ambient air may be polluted by dust, smoke, corrosive gas, steam or salt spray, pollution level: IV;
4. Wind speed does not exceed 34m/s (equivalent to 700Pa on the surface of a cylinder);
5. Vibration or ground movement from outside the switchgear and control equipment is negligible;
6. The amplitude of electromagnetic interference induced in the secondary system does not exceed 1.10kV.
Technical Parameters
Items | Date | ||
rated voltage | 12kV | ||
Rated frequency | 50Hz | ||
Rated current | 630A | ||
Rated short-time withstand current | 20kA | ||
Rated short-time withstand current flow time | 4s | ||
Rated short-time withstand current (peak) | 20kA | ||
Rated short-circuit closing current (peak) | 63kA | ||
Rated cable charging current | 25A | ||
Rated short-circuit breaking current | 20kA | ||
Rated operating sequence | O-0.3s-CO-180s-CO | ||
Fracture insulation level | Power frequency (dry test) | 48kV | |
Lightning impulse test voltage (peak value) | 85kV | ||
Ground and phase to phase insulation level | power frequency | Dry test | 42kV |
Wet test | 34kV | ||
Lightning impulse test voltage (peak value) | 75kV | ||
Rated mechanical stability times | Circuit breaker | 10000次(M2級) | |
Rated closing/opening operating voltage (V) | DC24V | ||
Total weight | 150kg | ||
Dimensions (length x width x height) | 0 | ||
Closing time | 20~60ms | ||
Opening time | 18~45ms | ||
Closing at different periods (ms) | ≤2 | ||
Opening at different periods (ms) | ≤2 | ||
Average closing speed (m/s) | 0.4~0.8 | ||
Average opening speed (m/s) | 0.8~1.2 | ||
Contact opening distance (mm) | 9±1 | ||
Contact overtravel (mm) | 2±0.5 | ||
Contact closing bounce time (ms) | ≤2 | ||
Dimensions
Oil&Gas exploited
Automotive Manufacturing
Transportation & Dlistrlbutlon
Manufacture
Industrial Construction
Green Energy
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