ZN63 (VS1) VCB1

KEY WORDS:High pressure vacuum switch



ZN63 (VS1) -12Series type indoor high voltage vacuum circuit breaker is rated voltage 12kV, three-phase AC 50Hz Indoor high-voltage switchgear ,apply for power stations, substations, and industrial and mining enterprises to control or  protection transmission and distribution systems , especially for the important high altitude breaking load and frequent operation place.
Circuit breaker operating mechanism for the spring energy storage type, can use AC and DC energy storage operations, can also be used manually.
Circuit breaker can be equipped with long life permanent magnetic actuator, mechanical life can reached 60000 times ,can be used for extremely Frequent operation place.
Technical data:

NO Item Units parameters
1 Rated voltage KV 12
2 Rated Frequency HZ 50
3 Rated Current A 630.1250.1600.2000.3150
4 Rated short-circuit breaking current KA 20 25 31.5
5 Rated short-circuit closing current (peak) KA 50 63 80
6 Rated short-circuit duration S 4
7 Rated short-circuit breaking current breaking number  nos 50s
8 Rated operating sequence   0-0.3s-CO-180s-CO
9 Rated lightning impulse withstand voltage kv 125
10 1min power frequency withstand voltage KV 65
11 Closing time ms ≤ 70
12 opening time ms ≤ 50
13 Mechanical life Times 20000
14 Rated Storage and operation voltage V AC DC 220/110
15 Breaking life ms ≤ 80
16 Storage life s ≤ 10
       Adjust the parameters of mechanical properties:
No Item Unit Parameters
1 Contact distance mm 14±1
2 Contact Over-travel mm 3.5±1
3 Closing speed m/s 1.0±0.2
4 Opening speed m/s 1.3±0.2
5 Contact closing spring time ms ≤2
6 Rated contact pressure N 20KA(2400±200) 25KA(2400±200) 31.5KA(3100±200)
7 Three phase closing opening asynchrony ms ≤2



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