1. ZW7 - 40.5 30KV 33 KV 35KV 3 phase VCB Vacuum Circuit Breaker

ZW7 - 40.5 30KV 33 KV 35KV VCB Vacuum Circuit Breaker is three phase AC 50Hz, rated voltage is 40.5kV outdoor high-voltage electrical equipment , attached the spring operator or electromagnetic actuator can be well controlled electric opening and closing can also be Manual storage, manually open and close. Design performance meet GB1984-89<<AC high voltage circuit breakers>>; national standards, and meet the IEC-56<<high-voltage AC circuit breakers>>; International Electro-technical Commission standards.

ZW7-40.5 Type vacuum circuit breaker is mainly used for outdoor 35kV power transmission system control and protection also applies to urban and rural power distribution networks and industrial and mining enterprises in the normal operation and short circuit protection purposes.

The overall structure of the insulator pillar product type; built vacuum interrupter type on the vase, porcelain vase for the next pillar vase. For frequent operation place. And has good sealing, anti-aging, high pressure, no burning, no explosion, long life, convenient installation and maintenance features.

2. Environmental conditions:

Ambient air temperature: upper limit +50 ° C, lower limit -30 ° C;

Amplitude: seismic intensity of 8 degrees;

Pollution level: Level III;

Large daily temperature difference: no more than 35 °C.

Altitude: ≤3000m (If the altitude is to be increased, the rated insulation level will increase accordingly);

Wind pressure: no more than 700Pa (equivalent to a wind speed of 34m / s;

3. main technical parameters:

• Model: ZW7-33/2000
• System voltage : 33KV
• Rated voltage : 36 KV
• Rated frequency : 50 /60 Hz
• Rated current : 2000 Amp
• Interrupting medium : Vacuum
• No. of phase : 3
• Rated short-circuit breaking current: 25 KA
• Rated short-circuit making current: 63 KA
• First pole to clear factor: 1.3
• rated operation sequency : O-0.3s-CO-3min-CO
• Rated duration of short-circuit : 3 sec
• Impulse withstand on wave shape 1.2/50ms: 170 KV pk
• Power frequency test voltage dry at 50Hz 1 min: 170 KV peak
• Gang operated spring mechanism type
• operating time without current at 100% rated : < 50 ms
• breaking time: < 65 ms
• closing time: 70 ± 10 ms
• Free circuit breaker trip ,trip coil voltage 110 VDC
• Rated supply voltage of shunt opening release: 110 VDC
• Spring charging motor voltage : 230 VAC
• Min.clearance in air between phase : 430 mm, phase to earth : 380mm
• protection degree: IP55
• No. of aux.contact : 6 NO+ 6 NC
• with lockout facility & remote local facility
• usage : Outdoor
• with 1 nos closing coil , 1 nos tripping coil

4. Photo and drawing

5. Factory

6. FAQ

1. Send the technical data, better for all useful information; we will make a good recommendation.

2. The lead time depend on quantity of order. Some standard type is on stock. Otherwise, it will take 3-15 days.

3. Usually shipped by sea, small order or urgent order we can send you by air.

4. All our activities are accredited to ISO 14001:2015 and IEC standard.

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