ZN12-40.5 VCB/ Vacuum circuit breaker

ZN12-40.5 VCB/ Vacuum circuit breaker

1.With rated voltage of 40.5kV, three-phase AC 50Hz indoor HV switch equipment.
2.They are suitable for application in the mining industry, substations and power transmission and distribution systems for controlling and protecting the switch, also are suitable for many kinds of switchgear.
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Product Details

Structural characteristics

1. Adopt air insulation to meet the insulation requirements under the normal running conditions.

2. It can effectively reduce the dimensions, rational overall layout, small size and beautiful appearance.

3. It has widely application range, not only can be fixed in the switchgear, also can be used as withdrawable type with chassis.

4. Inside of the circuit breaker has a simple and reliable mechanical linkage to meet the “five prevention function” requirements of the switchgear.


Main technical specification



Name

Unit

Data

1

Rated voltage

kV

12

2

Rated frequency

Hz

50

3

Rated current

A

1600

2000

4

Rated short circuit breaking current

kA

25

31.5

5

Rated peak withstand current

kA

63

80

6

Rated short-circuit duration

s

4

7

Rated power frequency withstand voltage

kV

95

8

Rated lightning impulse withstand voltage

kV

185

9

Rated operating sequence


O-0.3s-CO-180s-CO

10

Rated breaking current of single capacitor bank

A

630

11

Rated breaking current of back to back capacitor bank

A

400

12

Breaking times of short circuit breaking current

Times

20

13

Mechanical life

Times

10000

14

Type of operating mechanism


Integrated with the circuit breaker, without independent models

15

Rated voltage of motor

V

-220/110    ~220/110

16

Rated power source voltage of closing and opening device

V

-220/110    ~220/110

17

Rated voltage/current of closing electromagnet

V/A

-110/1.91    -220/0.89

~110/1.91   ~220/1.25

18

Rated voltage/current of tripping electromagnet

V/A

-110/1.91    -220/0.89

~110/1.91   ~220/1.25

Note:item 10&11 will be supplied as requested.


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Following information is required for order

1.Full type name, rated current, rated short-circuit breaking current,distance between Phases.

2.Rated voltage of operating circuit power source.

3.Rated voltage of energy-stored motor.

4.The name and quantity of spare parts.

5.For other special requirement.



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