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ZN12-40.5 A series of indoor high voltage vacuum circuit bre
Release time:2015-06-05 22:19 Read:Time

●Almost
ZN12-12 (ZN68-12) series vacuum breaker for 12 kv three-phase ac 50 hz, rated voltage of the indoor high voltage switch equipment, It is the introduction of Germany's Siemens technology products. The circuit breaker operating mechanism is spring energy storage type. It can be used to communicate or operation directly, it also can use manual operation, which is suitable for power plant, the control or protection of electric power transmission and distribution system such as substation, especially suitable for open circuit of important load and frequent operation field.

ZN-12-40.5 vacuum circuit breaker is the main switch with KYN - 40.5, KYN1-35, GBC - 35 series switch cabinet form a complete set. The circuit breaker installed in the switch cabinet hand car, a mobile unit. At the same time, the breaker can be installed within the XGN 40.5 switchgear for fixed installation. The circuit breaker mechanism and switch it, special spring energy storage type operating mechanism, it can use ac dc energy storage operation, it also can use manual operation.

●  The data as follow:
No. Name Unit Data
1 Rated voltage KA
2 Rated current A 12 12 12 40.5 40.5
3 Rated short circuit breaking current KA 31.5 1600 2000 1600 2000
4 Stable current (peak) KA 100 100 100    
5 4S heat stable current (50KA is 3S) KA 31.5 31.5 31.5 25 25
6 Rated peak with stand current(peak) KA 100 100 100 80 80
7 The rated short circuit current open circuit
 
Times 50 20
8 Rated operating sequence   Open-0.3s-close&open-180s-close&open
9 Lightning impulse withstand voltage rating (full wave) KV 75 185
10 Rated short-time power frequency withstand voltage (1 min) KV ≤ 75 95
11 closing time ms 42 50~85
12 opening time
 
ms ≤60(50) 40~85
13 Rated current disconnect
 
times 20000(1~1V)10000(V~X) 120000
14 Rated current disconnect times 2000(1~1V)10000(V~X) 20
15 Energy storage motor power W 275 275
16 Energy storage motor rated voltage V 110.220 220.110
17 Energy storage time s ≤15 ≤15
18 Closing electromagnet rated voltage V 110.220 220.110
19 Break-brake electromagnet rated voltage V 110.220 220.110
20 Energy storage type shunt tripping device rated voltage V 110.220 220.110
21 Closing the interlocker rated voltage V 110.220 220.110
22 Loss of pressure trip rated voltage
 
V 110.220 220.110
23 The overcurrent tripping current rating
 
A 5 5
24 Auxiliary switch rated current
 
A AC 10 DC 10 DC 10
25 contact travel mm 11±1 11±1 20±2
26 over-travel of the contact mm 8±2 8±2 5±1
27 closing speed m/s 0.6~1.8 0.8~1.4
28 opening speed m/s 1.0~1.8 1.1~1.8
29 Contact switch trip time ms ≤2 ≤3
30 center distance
 
mm 210  1.5(280±105) 350±1.5
31 Three-phase contact break-brake synchronism
 
ms ≤2 ≤2
32 Each phase loop resistance υ Ω ≤35 ≤45
 

● ZN12-40.5 And installation dimension chart

 
Last one: VS1 Indoor high voltage vacuum circuit breaker
 
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