ZN12-40.5 A series of indoor high voltage vacuum circuit bre_ZHEJIANG YIGAO POWER TECHNOLOGY CO.，LTD

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	Ⅰ	Ⅱ	Ⅲ	Ⅰ	Ⅱ
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

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