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Product introduction:

In the 27kV pole-mounted automatic circuit recloser, we encapsulate the vacuum interrupter, main circuit live parts, high-accuracy voltage and current sensors, and high voltage pickup capacitors inside the cycloaliphatic-epoxy poles, based on decades of experience in solid insulation technology, eliminating all the partial discharge problems. The poles can pick up the voltage or current signals from power source side and secondary side at the same time, also the capacitor can power supply the intelligent electronic device (IED).

The three phases of the automatic circuit recloser are driven by independent magnetic mechanism respectively, which reduces dispersion, responding more timely and breaking more accurately. The breaking time is shorter than 10ms. The recloser is equipped with electrical latching and manual open handle, which latch electrically and manually the closing when the breaking handle is placed in the open position. A mechanical counter is installed at the bottom of the switch for counting the number of switch operations.

Note: Technical datas and sketches are only for your reference. Such details in our contact prevail.

Model annotation:

NO	Item		Unit	ZWM-27/630-16A
1	Interrupting medium		-	Vacuum
2	Insulation medium		-	Solid insulation
3	Rated voltage		kV	27
4	Rated frequency		Hz	50
5	Rated current		A	630
6	Rated short-time withstand current		kA	16
7	Rated short circuit breaking current		kA	16
8	Rated peak withstand current		kA	40
9	Duration of rated short circuit		s	1
10	Interrupting times of short circuit current		Times	≥30
11	Rated operation sequence		-	O-0.5s-CO-2s-CO-2s-CO-2s-CO
12	Rated lightning impulse withstand voltage(1.2/50μs，peak)	between phases, phase to earth	kV	125
12	Rated lightning impulse withstand voltage(1.2/50μs，peak)	between interrupters	kV	150
13	Rated power frequency short-time withstand voltage (1min）	between phases, phase to earth	kV	50
13	Rated power frequency short-time withstand voltage (1min）	between interrupters	kV	60
14	Partial discharge of the whole breaker(CS, VS and pickup capacitor are included)	Testing voltage	kV	17.2
14		Partial discharge	pC	≤20
15	Main resistance		μΩ	≤80
16	Mechanical operation lifetime		Operations	≥10000
17	Actuator type		-	Magnetic
18	Operation type		-	Motor,with manually opening and closing
19	Operation voltage		V	DC380
20	Closing time		ms	≤60
21	Opening time		ms	≤10
22	Synchronism in closing and opening		ms	≤2
23	Current sensors inside the pole	Rated current ratio	phase sequence	1000A/1A
		Accurancy	phase sequence	class 0.5
		Temperature range	℃	-40℃～70℃
		Implementation	-	electro-magnetic
24	Voltage sensors inside the pole	Rated current ratio	phase sequence	（22kV/√3）/（3.25V/√3）
		Accurancy	phase sequence	class 1
		Temperature range	℃	-40℃～70℃
		Implementation	-	capacitor divider
		Sampling type	-	power side and load side voltage pickcup
25	Opening lockout		-	Included
26	Closure protection level		-	not lower than IP67
27	Circuit breaker liftime		Year	20

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