ZW32-12Y type outdoor HV AC vacuum circuit breaker is used to make and break load current, overload current and short-circuit current in the power system with rated voltage 12kV, three-phase AC 50/60Hz. It is applicable to substations, industrial and mining enterprises, unban and rural electric power networks, especially to the occasions with frequent operation and automatic power distribution networks for power network control and equipment protection. The product conforms to the standards of IEC62271-100 & GB1984: AC high voltage circuit breaker, IEC60694 & GB/T11022: HV general technical requirement of switch and control apparatus.

1. Altitude:≤2000m;
2. Ambient temperature: -40℃～+45℃；diurnal temperature rang≤25℃;
3. Wind speed:≤35m/s, equivalent to wind pressure of 700Pa;
4. Earthquake intensity:≤grade 8;
5. Relative humidity: monthly average≤90%; daily average ≤95%;
6. Ice thickness:≤10mm
7. Sunlight intensity:≤1000W/m2
8. Pollution degree:≤Ⅳ(GB5582);
9. Applicable occasions: no fire and explosion danger, no chemical corrosion and no frequent severe vibration

No. Item Unit Data 1 Rated voltage kV 12 2 Rated insulation level 1min P.F withstand voltage Dry test 42/48(isolating distance) Wet test 34 Auxiliary loop and control loop 2 Lightning impulse withstand voltage(peak) 75/85(isolating distance) 3 Rated frequency Hz 50/60 4 Rated current A 630 1000 1250 5 Rated short-circuit breaking current kA 16 20 25 6 Rate short-circuit making current(peak) 40 50 63 7 Rated peak withstand current(peak) 40 50 63 8 Rated short-time withstand current(4s) 16 20 25 9 Rated short-circuit duration s 4 10 Breaking times of rated short-circuit breaking current times 30 11 Closing time ms ≤50 12 Opening time ≤60 13 Complete breaking time ≤100 14 Arcing time ≤50 15 Mechanical life times 10000 16 Rated operating voltage and rated auxiliary loop current V AC/DC 220 17 Charging time under rated voltage s ≤8 18 Average opening speed m/s 1.2±0 19 Average closing speed 0.6±0. 20 Contact close-bouncing time ms ≤2 21 Three-phase opening non-simultaneity ≤2 22 Allowed accumulative wear thickness for moving and static contacts mm 3 23 DC resistance for each phase loop(with isolator) μΩ ≤80(120 with isolator) 24 Contact self-closing pressure N 2000±200 25 Phase-to-phase spacing mm 340±1.5 26 Net weight kg 105(130 with isolator)

No. Item Unit Data DC operating power supply, coil short-time duty CDY-Ⅰ CDY-Ⅱ CDY-Ⅲ 1 220V closing/opening coil Calculating current A 53 70 100 resistance(20℃) Ω 4.2±0.2 3.2±0.17 2.2±0.12 2 Applicable to circuit breaker’s spec. 16kA 20kA 25kA 3 Power supply voltage AC220V

1. The performance of the product is stable and reliable as the product adopts three-pillar type structure, and the vacuum arc-extinguishing chamber connects with the operating mechanism through insulation pulling rod;
2. Arc-extinguishing chamber, main conducting loop and insulation support are casted into an organic whole by epoxy resin with APG technology, and encapsulated with silicon rubber, it is provided with good anti-condensation performance and mechanical strength.
3. The switch adopts a high performance permanent magnet operating mechanism with the advantages of simple structure and long mechanical life, and with the functions of manual/electric energy storage and opening/closing operation.
4. An integrated isolation switch is optional for the product.
5. The product has the advantages of small size, novel appearance, light weight and easy installation.
6. The switch can be equipped with control terminal interface to apply to automation distributiong networks and the unattended substations.