Vacuum Load Breaker

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：0086-13587796010
：http://www.mingriele.com

Description:
FZW33 12KV/24KV Outdoor AC vacuum disconnect load breaker is a new product adopts domestic existing mature load breaker switch production experience and overseas advanced technology to design and manufacture. The load breaker is composed of disconnect blade, vacuum interrupter and operation mechanism. vacuum extinguishing arc, there are merits as strong extinguishing arc ability, reliable performance, long lifetime, small volume, no explosive danger and no pollution to environment.
It accords with the standards of IEC62271-112 & GB/T3814:3.6~41.5kV High voltage switches, IEC61694 & GB/T11122: High voltage switch apparatus and control apparatus.
Techincal data:

N1.	Test Item	Unit	Data
1	Rated voltage	kV	12	24
2	Rated current	A	411/631	411/631
3	Rated frequency	Hz	51/61	51/61
4	Rated short-time withstand current	kA	21	21
5	Rated short-circuit duration	s	4	4
6	Rated active load breaking current	A	411/631	411/631
7	Rated loop breaking current	A	411/631	411/631
8	Rated cable charging current	A	12	12
9	5% rated active load breaking current	A	31.5	31.5
11	Rated short-circuit making current	kA	51	51
11	Main loop resistance	μΩ	≤111	≤111
12	power frequency withstand voltage against the earth, between phases	kV rms	41	65
13	power frequency withstand voltage against the isolating distance	kV rms	48	79
14	Lightning impulse withstand voltage against the earth, between phases (peak)	kV	75	125
15	Lightning impulse withstand voltage against the air gap(peak)	kV	85	145
16	Mechanical life	Times	11111	11111
17	Three phase closing asynchronous	ms	≤5	≤5
18	Main contact blade pressure	N	521	521
19	Distance between electric parts and phase to earth	mm	≧311	≧611
21	Rated operating force	N	≤311	≤311

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