|Place of Origin:||
Zhejiang, China (Mainland)
2000, 2500, 3150, 4000A
|Rated peak withstandcurrent:||
|Rated short-time withstand current:||
|Rated short-time withstand time:||
|Weight for single pole:||
|Mechanism operating times:||
|Mechanism type Main blade:||
|Mechanism type Earth blade:||
I, II, III, IV
|Packaging Details:||GW7-252 Outdoor HV Disconnect Switch The package is suitable for both sea and air shipment.|
|Delivery Detail:||The delivery date is according to customer requirement.|
Summary of GW7-252 Outdoor HV Disconnect Switch:
GW7-252 outdoor AC high voltage disconnect switch is used to open and close high voltage circuit in rated voltage 252kV, 50/60Hz power system. It can be used with motor operating mechanism and manual operating mechanism. It accords with the standards of IEC 62271-102 and GB1985-20 04: AC high voltage disconnect switch and earthing switch.
Technical Specification of GW7-252 Outdoor HV Disconnect Switch:
Operation principle of GW7-252 Outdoor HV Disconnect Switch:
1. Advanced driving structure
1.1 Driving part adopt composite axis cover of self-lubricate, no need to add lubricating oil . Axis pin and axis is made of stainless steel or alum bronze and have features of high precision and antirust.
1.2 Frame work seal structure for axis base, it's sealed both for upper and underside, molybdenum for lubricant grease, no volatilization, and non-maintenance.
1.3 O/C position-limited reliable.
1.4 It adopt adjustable hoop connection for mechanism output axis with switch driving axis, no need jointing and easy connection.
1.5 It revolving 71° horizontal, then overturn 45 to make sure contact finger with contactor reliable, this c an make operating slightly and structure reasonable.
2. Well anti-rust performance
2.1 Different parts have different anti-rust method, hot-galvanized, hot extrusive zinc or painting.
2.2 Standard equipment is made of stainless steel or hot-galvanized, stainless steel for below M10 fixing equipment, hot-galvanized for other parts.
3. Credible main electric system
3.1 Contact finger silver-coating thickness ≥30um, hardness ≥120 Vickers.
3.2 Electric loop almost adopt fixing connection and can improve electric stability and reliability.
3.3 Outer-press type contactor, the material is copper, outer-press spring structure, insulation equip ment between contact finger and spring can avoid spring diffluence and avoid overheat for contact.
Ambient Condition of GW7-252 Outdoor HV Disconnect Switch:
1. Altitude: ≤2000m;
2. Ambient temperature: -40℃ ~+40℃ ;
3. Wind speed: ≤34m/s;
4. Earthquake intensity: ≤8degree;
5. Ice coverage thickness: ≤10mm;
6. Pollution degree: I, II, III, IV;
7. Applicable occasions should be free from inflammables and frequent severe vibration.
Product Feature of GW7-252 Outdoor HV Disconnect Switch:
GW7-252 disconnect switch is a three pole structure, contain frame, post insulator and conduct parts, three post insulator for each pole, revolving post on the centre axis frame, conduct knife fixed on the centre revolving post insulator, when operating mechanism working, it can drive revolving insulator revolving 71° to finish opening and closing operating. There is an interlock between disconnect switch and earth switch.
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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