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ZN12-12(40.5) 12kV 40.5kV indoor AC HV vacuum circuit breaker

ZN12-12 12kV 40.5kV indoor AC HV vacuum circuit breaker

Additional information

Product Details:

ZN12-12(40.5) indoor AC HV vacuum circuit breaker

 

General Introduction:

ZN12-12 series indoor AC HV vacuum circuit breaker is the indoor equipment of three phases AC 50Hz, rated voltage of 12kV, which introduced the technology from German company. It is suitable for area with all kinds of load and frequent operation, and can used for protection and control of industrial and mining, enterprise, power plant and substation electrical facilities.

This product is in accordance with related requirement of GB1984, JB3855, DL403 and IEC standards.

 

Working Conditions:

1. Altitudel: 1000m;

2. Ambient temperature: -25 ~+40 ;

3. Relative humidity: daily average 95 , monthly average 90 ;

4. Earthquake intensity: 8 degree;

5. Applicable occasions should free from inflammables, explosives, corrosives and severe vibration.

 

Features:

1. The breaking capacity of the arc extinguish chamber is high, the current carrying capacity is low, and the electrical life is long.

2. layout is from front to back, simple and compact structure, complete operation and easy maintenance.

3. In order to structure and installation, they can be divided into: Horizontal fixed type, inclined fixed type, middle set movable type.

 

Technical Specification:

S/N Item Unit Data
1 Rated

voltage

kV 12
2 Rated insulation level 1 min power

frequency

withstand

voltage

42
Lightning

impulse

withstand

voltage

75
3 Rated frequency Hz 50
4 Rated current A 6301250

1600

12501600

2000

2500

3150

12501600

2000

2500

3150

20002500

3150

4000

5 Rated short circuit breaking current kA 20/25 31.5 40 50
6 4s short time withstand current 20/25 31.5 40/3s 50/3s
7 Rated short circuit making current (peak) 50/63 80 100 125
8 Rated peak withstand current (peak) 50/63 80 100 125
9 Breaking times of rated short circuit breaking current times 50 30
10 Mechanical life 10000 6000
11 Closing time ms ≤75
12 Opening time ≤65
13 Phase center distance mm 210、230、250、275

Outline Dimension

ZN12 vacuum circuit breaker

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