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GW□-12/24/40.5 Outdoor HV Disconnect Switch

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Summary

GW□-12(24/40.5)/630-20(25) outdoor AC high voltage disconnect switch(disconnect switch for short) is used to open and close circuit with voltage but no-load 50/60Hz, 12(24)(40.5)kV power system, The antipollution type can be used in the serious pollution area. It has advantages of three pole linkage and good synchronous performance.It accords with standards of IEC 62271-103:High Voltage Switches.

Ambient conditions

1. Altitude:≤3000m ;
2. Ambient temperature: -30 ℃~+40℃ ;
3. Wind speed:≤35m/s;
4. Air pollution: IV;
5. Earthquake intensity:≤8 grade;
6. Ice thickness:≤10mm.

Model

Technical specification

No.	Item		Unit	Data
1	Rated voltage		kV	12,24,40.5
2	Rated current		A	630,1250
3	Rated power frequency		Hz	50/60
4	Rated peak withstand current		kA	50,63
5	Rated short-time withstand current		kA	20,25
6	Rated short-time withstand current duration		s	4
7	Main circuit resistance		μΩ	12kV≤90	4kV≤100	40.5kV≤100
8	1min(dry) power frequency withstand voltage			42/48	55/75	95/115
9	1min(wet)power frequency withstand voltage	phase to phase phase to earth across open contacts	kV	30	50	85
10	Lightning impulse withsthand voltage (peak)			75/85	85/145	185/215
11	Mechanical life		Times	2000

This disconnect switch consists of frame, operating insulator, static contact, blade, linkage spring mechanism, etc. Frame: 5mm thickness bended armor ptate, there are holes on the frame to fixed post insulator. Post and operating insulator: adopt ZS 12,24,40.5 series outdoor clubbed post insulator. The mini resist bend load is 4000N. Static contactor: it is made of violet copperplate and fixed on post insulator. Blade: it is made of rectangular violet copperplate, there is a press-spring to adjust press. The switch can be vertically or horizontally installed in outdoor with CS□ mechanism.

Main function features