　　GW16B/17B Series of disconnectors are improved by us on the basis of Series GW16/17 disconnectors. Besides the traditional virtues of single-arm folding style, this new-type products adopt the hot-galvanizing process on surfaces of exposed ferrous metal components and double-seal rolling contact finger. By means of the above modification, GW16B/17B Series of disconnectors will hold the dominant position in the disconnector market.

　　● Main Features

　　1 Reasonable new structure, reliable performance and service;

　　2 Excellent mechanical properties, small operating force, long mechanical endurance;

　　3 Moving contact is single-arm folding style, the driving components are sealed in the conducting rod with no influence of bad weather;

　　4 Improve anticorrosive, waterproof, dustproof, anti-freezing capability and mechanical stability, etc., remove the defects such as contact heating and big opening impulse to make the performance more reliable.

　　● Technical Parameters

Specifications			Unit	Value
Rated voltage			kV	252		363		550
Rated current			A	2500/3150
Rated frequency			Hz	50/60
Rated short-time withstand current (r.m.s)			kA	20/25/ 31.5	25/31.5/40		31.5		31.5/40
Rated peak withstand current			kA	50/63/80	63/80/100		80		80/100
1min power frequency withstand voltage (r.m.s)	To earth/Between phases		kV	70	140		230		275
	Across isolating distance		kV	80	160		265		315
Lightning impulse withstand voltage (peak)		To earth/Between phases	kV	170	325		550		650
		Across isolating distance	kV	195	375		630		750

GW27-550/4000 type

GW17-363/5000 type Disconnector