GW22B-252D(G)252kV Outdoor high-voltage AC isolation switchDetailed product description：

GW22B-252D (G) type outdoor high-voltage transmission equipment with a three-phase AC frequency of 50Hz is used to disconnect or connect high-voltage lines under no-load conditions, in order to switch high-voltage lines, change operating modes, and safely isolate high-voltage electrical equipment such as busbars and circuit breakers for maintenance.
This product is a single column vertical fracture deflection type and can be equipped with JW10-252 grounding switch. The isolation switch adopts SRCJ3 type motor operating mechanism three pole linkage operation; The grounding switch adopts SRCS1 type manual operation mechanism with three pole linkage operation.

The GW22B-252D (G) 252kV outdoor high-voltage AC isolation switch complies with standards such as GB1985-2004 "High Voltage AC Isolation Switches and Grounding Switches", GB11022-1999, DL/T593-2006 "Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards", DL/T486-2000 "Technical Conditions for Ordering AC Isolation Switches and Grounding Switches", and meets the relevant regulations on ordering high-voltage isolation switches issued by State Grid Corporation of China for improvement. And through seismic resistance calculation analysis with a seismic intensity of 9 degrees.

project			Unit	Parameters
rated voltage			kV	two hundred and fifty-two
Rated insulation level（1）	a) 1-minute power frequency withstand voltage (effective value)		kV	to the ground	four hundred and sixty
			kV	fracture	five hundred and thirty
	b) Rated lightning impulse withstand voltage (peak)		kV	to the ground	one thousand and fifty
			kV	fracture	one thousand and two hundred
rated frequency			Hz	fifty
rated current			A	1600           2000  2500  3150
Rated short-time withstand current			kA	40                    50
Rated peak withstand current			kA	100                   125
Rated short-circuit duration			s	three
Rated terminal mechanical load		Horizontal and vertical loads	N	two thousand
		Horizontal lateral load	N	one thousand and five hundred
		vertical force	N	one thousand two hundred and fifty
Isolation switch busbar conversion current opening and closing capability				300V, 1600A, 100 times
Grounding switch induced current opening and closing capability		1) Electromagnetic induction current (current/voltage)	A/kV	160/15（2） （80/2）
		2) Static induced current (current/voltage)	A/kV	10/15（2） （3/12）
		3) Opening and closing times	time	ten
Isolation switch low current opening and closing capability		capacitive current	A	one
		Inductive current	A	zero point five
Rated contact area		Longitudinal displacement of supporting wire	㎜	150/200 (hard wire/soft wire)
		Horizontal total offset	㎜	150/500 (hard wire/soft wire)
		vertical offset	㎜	150/250 (hard wire/soft wire)
mechanical life			time	two thousand
creepage distance			mm	6300     7812
Human operated mechanism		model		SRCS1
		Control circuit voltage	V	AC220
Electric motor operating mechanism		model		SRCJ3
		Motor voltage	V	AC380
		Control circuit voltage	V	AC220
		Opening and closing time	s	10±1
		output angle		135°
unipolar weight		not grounded	kg	six hundred
		grounding	kg	six hundred and thirty
Note: (1) This product belongs to the high-altitude (G) type, and the insulation test is assessed at an altitude of 2000 meters, with a correction factor of k=1.13; If the insulation level is set at 395 kV, it can be used in areas with an altitude of 2800 meters. (2) The parameters are specified as Class B values in DL/T486-2000, and arc ignition devices must be installed; The values in parentheses are specified for Class B in GB1985-2004.