Summary of GW49-252 Outdoor HV Disconnect Switch with earth switch :
GW49-252 outdoor AC high voltage disconnect switch is used to open and close high voltage circuit in rated voltage 252kV, 50Hz power system. It accords with the standards of IEC 62271-102 and GB1985-2004: AC high voltage disconnect switch and earth switch.

Technical Specification of GW49-252 Outdoor HV Disconnect Switch with earth switch :

Operation principle of GW49-252 Outdoor HV Disconnect Switch with earth switch :
1. Main blade
It's make up of foldaway movement and clamp movement. 
Foldaway movement: CJ6A mechanism drive and rotating insulator (2) running horizontal, gear (4) drive double linkage (5) to make the conducting pipe (9) closing clockwise. Operating bar (8) which on top of adjustable linkage (6) make axial displacement, rack (11) movement drive gear (12) running to make the upper conducting pipe (15) and under con ducting pipe (9) closing or opening. Otherwise, spring (10) storage and discharge according to scheduled requirement, to balance the blade torque fully. 
Clamp movement: near closing position, idler wheel (13) moving along inclined surface, the pole (16) which on top of idle wheel (13) moving up, Symmetrical slide mechanism which inside the male contact holder (18) change moving operating of top pole (16) to clamp movement of the contact finger (20). idle wheel (13) moving up 3-5mm then closing completely after the female contact (19) bar was clamped, the function force of clamped spring is on the top pole now, then the top pole can get a steady force so that the contact finger (20) can make a clamped force with female cont act bar. During opening operating, idle wheel (13) moving outward along inclined surface until away from there, top pole drive contact finger opening as 'V' type.
2 earth blade
There are motor and manual two types, the thermal steady current is same with main blade, mechanical and electric interlock can be achieved by the earth and main blade.

Ambient Condition of GW49-252 Outdoor HV Disconnect Switch with earth switch :
1. Altitude: ≤2000m;
2. Ambient temperature: -40℃ ~+40℃ ;
3. Wind speed: ≤34m/s;
4. Earthquake intensity: ≤8 degree;
5. Ice coverage thickness: ≤10mm;
6. Pollution degree: I, II, III, IV;
7. Applicable occasions should free from inflammables and frequent severe vibration.

Certifications:

Cooperation Projects:

Company Pict:

Huayi Electric Co., Ltd. is the core subsidiary of Huayi Elec. Apparatus Group Co., Ltd. In 2007, It became the first ShangHai Stock Exchange (SSE) listed electric company in WenZhou. The company has more than 1,500 employees, of these 30 percent is engineers. It has 7 core subsidiaries and 4 divisions. It focuses on two main industries: wind energy and electric apparatus. Huayi Electric Co., Ltd has created a complete marketing network to cover the business of State Grid Corporation, five power generation Groups, chemical, petroleum, railways, industries and manufacturing. It as well has established perfect worldwide marketing channels and after-sales service system in Europe, Asia, Africa, America, and Oceania.

Main Products List:
1. Wind Turbines 
2. Switchgear Panels
3. High Voltage Components
4. Instrument & Protection Systems
5. Instrument Transformers & Accessories
6. Outdoor Power Transmission & Distribution Systems
Sample & OEM & ODM is OK. 
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