126KV 252KV 363KV 420KV 800KV series disconnector

Product Detail

Description

GW17 series disconnector adopts double-column horizontal telescopic structure, mainly composed of base, insulator, conductive system, operating mechanism, etc. The disconnector is operated by CJ11 type motor operating mechanism for opening and closing. The attached ground switch is mainly composed of ground switch system and operating mechanism, and each group of ground switches is operated by a CJ11 motor operating mechanism for opening and closing.

Main Features

Strong product flow capacity, long mechanical life.
The transmission shaft of the product is made of high quality alloy steel, the outer surface is treated with hot dip galvanizing, and the anti-corrosion ability is strong; The shaft sleeve is made of high-strength engineering plastic, which has good wear resistance and strong anti-corrosion property.
The product adopts a fully sealed structure between the moving contact base and the contact finger, effectively avoiding the intrusion of rain, snow and frost, and has strong waterproof ability.
The contact surface of the product adopts advanced silver plating technology, and the hardness of the silver layer reaches 140HV, which enhances the electrical conductivity and wear resistance of the surface.

Technical parameter

Specifications		Unit	Value
Model			GW17/17B-126	GW17B-252	GW17A-363	GW17B-420	GW17B-550	GW17A-550	GW17-800
Rated voltage		kV	126	252	363	420	550	550	800
Rated current		A	2500/3150	3150/5000	3150/5000	3150	3150/4000	3150/4000	5000
Rated frequency		HZ	50	50	50/60	50	50	50	50
1min power frequency withstand voltage (r.m.s)	Phase to phase/ to earth	kV	230	460	510	520	740	740	960
1min power frequency withstand voltage (r.m.s)	Across isolating distance	kV	230(+73)	460(+146)	510(+210)	610	740(+315)	740(+315)	960(+460)
Lightning impulse withstand voltage (peak 1.2/50us）	Phase to phase/ to earth	kV	550	1050	1175	1425	1675	1675	2100
Lightning impulse withstand voltage (peak 1.2/50us）	Across isolating distance	kV	550(+103)	1050(+206)	1175(+295)	1425(+240)	1675(+450)	1675(+450)	2100(+650)
Rated operating impulse withstand voltage（peak 250/2500μs）	Phase to phase/to earth	kV	\	\	950	1050	1300	1300	\
Rated operating impulse withstand voltage（peak 250/2500μs）	Across isolating distance	kV	\	\	850(+295)	900(+345)	1175(+450)	1175(+450)	\
Rated short-time withstand current (r.m.s)		kA	40	50/63	50/63	50	50/63	50/63	63
Rated peak withstand time		kA	100	135/160	125/160	130	125/160	125/160	170
Rated short-circuit withstand time		S	3	3	3	3	3	3	3
Wiring terminal static mechanical load	Longitudinal	N	1250	1500	1500	2000	2000	2000	4000
	Horizontal		750	1000	1000	660	1500	1500	3000
	Vertical		1000	1250	1500	1500	1500	1500	2000
Operational altitude		m	≤2000	≤2000	≤1000	≤1000	≤1000	≤1000	≤2000
Operating pollution class		Class	AG5	AG5	AG3	AG5	AG3	AG3	AG3
Mechanical life		Times	5K	10K	2K	10K	10K/6K	10K	10K
Radio interference level		uV	≤500	≤500	≤500	≤500	≤500	≤500	≤500
bus-transfer current switching by disconnector	bus-transfer current	A	1600	1600	1600	1600	1600	1600	1600
bus-transfer current switching by disconnector	bus-transfer voltage	V	100	300	300	300	400	400	400
disconnector switch capacitive open current		A	1	1	2	1	2	2	2
disconnector switch inductive open current		A	0.5	0.5	1	0.5	1	1	1
The switching induced current capacity of the earthing switch	Electromagnetic induction current	A	50/80	80/160	80/400	80	80	80/400	80
	Electromagnetic induction voltage	kV	0.5/2	1.4/15	2/35	2	2	35	2
	Electrostatic induction current	A	0.4/2	1.25/10	2/50	1.25	2	50	3
	Electrostatic induction voltage	kV	3/6	5/15	8/50	5	8	50	12

Brand	ROCKWILL
Model NO.	126KV 252KV 363KV 420KV 800KV series disconnector
Rated voltage	550KV
Rated normal current	4000A
Series	GW

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