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ZW32-12 VCB Outdoor high-voltage electric automatic circuit breaker vacuum Intelligence HV VCB

 
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Product Description

 ZW32-12F boundary (watchdog) outdoor intelligent high-voltage vacuum circuit breaker is an outdoor power distribution equipment with rated voltage of 12KV three-phase AC 50Hz. The circuit breaker is mainly used for breaking and closing the load current, overload current, short circuit, quick break, grounding protection, reclosing times selection, local remote control, remote communication and other functions in the power system, and is suitable for protection and control in the power distribution system of substations and industrial and mining enterprises. When the user's internal fault occurs in the T-connection of the 12KV line, or although it occurs inside the user's incoming switch, the protection action time limit is not the same as the substation outgoing switch protection, it will cause the substation outgoing switch protection to open. If the fault is permanent and the substation reclosing is unsuccessful, an accident within the medium voltage user boundary will cause the power failure of the whole distribution trunk line. This kind of common spreading accident in the power grid will cause heavy losses to the society  ZW32-12F boundary (watchdog) outdoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker), installed at the responsibility boundary of overhead lines, namely the front end of the user's incoming line, will automatically cut off the single phase grounding fault and interphase short circuit fault within the user, avoid the fault within the user's boundary from affecting the transmission trunk line, ensure the power safety of non fault users, and improve the reliability of power use.

1.Ambient air temperature: - 40 ℃~+40 ℃;

2.Daily temperature difference: Daily change 25 ℃;

3.Altitude: No more than 2000m;

4.The wind speedshall not exceed 34m/s (equivalent to 700pa on the cylinder surface);

5.Pollution level IV;

6.No frequent violent vibration, and the seismic intensity shall not exceed 8 degrees;

7.Places without fire, explosion and chemical corrosion.

Name

Unit

Parameter

Rated voltage

kV

12

Rated frequency

Hz

50

Rated current

A

630

1250

Rated short-circuit breaking current

kA

20

25

Rated peak withstand current

kA

50

63

Rated short-time withstand current

kA

20

25

Rated short-circuit making current (peak value)

kA

50

63

Mechanical life

Time

10000

Rated short-circuit breaking current breaking times

Time

30

Power frequency withstand voltage (1min): (wet) (dry) interphase、to ground/fracture

kV

30/42/48

Lightning impulse withstand voltage (peak value) interphase、to ground/fracture

kV

75/85

1min power frequency withstand voltage of secondary circuit

kV

2

1. Transportation

 During transportation, the whole set must be put into a closed packing box and fixed. During transportation, it shall not be overturned or tilted, and shockproof measures shall be taken.

2. Storage

 The vacuum circuit breaker on this column shall be kept in a dry, ventilated, moisture-proof, shockproof and anti harmful gas room. If it is stored for a long time, the environment shall be checked regularly to see if it meets the requirements. Packing, unpacking and storage shall be carried out in a dry room, and products and components shall be checked for completeness and conformity.

The user shall indicate:

 When ordering, the product model and rating, mechanism operation mode and voltage level, technical parameters and quantity of transformer shall be stated.The user can select the corresponding function configuration according to the use requirements.
 Change, accuracy level, capacity, electronic PT, remote controller, surge suppressor, distribution controller, disconnector and other functions of current transformer.

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