ZW20F-12KV 630/1250A High Voltage Vacuum Circuit Breaker

Model: ZW20F-12KV

Description:

ZW20F -12 outdoor high voltage vacuum circuit breaker (watchdog switch), installed in the responsbility boundary of the overhead distribution line, which is the front end of the user's incoming line, will automatically remove the single- phase ground fault and the phase-to -phase short-circuit fault within the user, avoiding the faults in the user's boundary and the power transmission trunk, and ensuring the safety of the non-faulty users,to improve the reliability of electricity consumption.
Accept OEM&ODM:YES
Certificate: CE,Test reports
Production time: 7~ 12 working days
Warranty period: 12 Months
Delivery time: 15 days
Payment term: 50% deposit before production+50% balance before shipment(by T/T,D/P,Paypal)

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General
Technical Parameter

ZW20F-12 outdoor high voltage vacuum circuit breaker (watchdog switch) is an outdoor power distribution equipment with rated voltage of 12KV and three-phase AC 50 Hz. When the internal fault occurs in the user of the T-connection of the 12KV distribution line, or it occurs inside the user's incoming switch, but the protection action time limit and the substation outlet switch are improper protection, the substation outlet switch will be opened. If the fault is permanent and the substation coincides unsuccessully, an accident in the medium voltage user community will power down the entire distribution trunk.This kind of common accident in the power grid will cause great losses to society. ZW20F -12 outdoor high voltage vacuum circuit breaker (watchdog switch), installed in the responsbility boundary of the overhead distribution line, which is the front end of the user's incoming line, will automatically remove the single- phase ground fault and the phase-to -phase short-circuit fault within the user, avoiding the faults in the user's boundary and the power transmission trunk, and ensuring the safety of the non-faulty users,to improve the reliability of electricity consumption.
Model Meaning

Drawing

Environmental

No.	Item	Unit	Data
	Rated voltage	KV	12
2	Rated frequency	Hz	50
3	Rated current	A	630	1000
4	Rated short circuit breaking curren	KA	20	25
5	Rated peak withstand curreni	KA	50	63
6	Rated short-time withstand curren	KA	20	25
7	Rated short circuit closing current	KA	50	63
8	Rated operating sequence		O-0.3s-CO-180s-CO
9	Mechanical life	Times	10000
10	Rafed current breaking fimes	Times	10000
11	Rated short circuit breaking times	Times	30
12	power frequency withstand voltage (1 min) (Wet)phase to phase,to earth	KV	34
12	power frequency withstand voltage (1 min) (Dry\phase to phase,to earth/between open contacts	KV	42/48
13	Lightning impulse withstand voltage phase to phase,to earth/between open contacts	KV	75/85
14	Secondary circuit 1 min power frequency withstand voltage	V	2000
15	Weight	kg	About 140
16	Clearance between open contacts	mm	9
17	Contact contact stroke	mm	3
18	Average closing speed	m/s	1.2±0.2
19	Average opening speed	m/s	0.6±0.2
20	Rafed operafing volfage	V	AC/DC220
21	SF6 gas rated pressure (gauge pressure	MPa	0

ZW20F-12KV 630/1250A High Voltage Vacuum Circuit Breaker

Model Meaning

Drawing

Environmental

Yufeng Electric Co.,LTD

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