We customize our products according to customer requirements.
1 Overview
GW7F series disconnector is the three colums,double break,horizontally reverse type structure,applied to the electrical system of rated frequency 50Hz or 60Hz, used in HV lines transfer in free of load condition and electric disconnection for maintenance of HV busbar,circuit breaker and live HV lines,etc.
GW7F Series HV AC disconnector is composed of three poles. Each pole is 3 columns structure, consisting of pedestal, pillar insulator, main blade, static contact-head of main blade, etc. Three pillar insulators separately are vertically installed on pedestal. The main blade is installed on the top of middle pillar insulator. Other 2 static contact-head are installed on the top of side pillar insulator. When main blade on the top of middle pillar insulatorhorizontally rotates for 70 degree, moving contact will insert into static contact then reverse for 45 degree, which makes static contact-fingers clamp the moving contact to finish one blade closing operation. For opening blade operation, vice versa.
2 Operating and installation Environment
Ambient Temperature is -50ºC~ +50ºC;
Altitude: no more than 2,000m(if it is 2,500m or more, the product adaptability can be improved based on users' requirements);
Wind pressure: no more than 700Pa (equivalent to a wind speed of 34m/s);
Seismic intensity: no more than 9 degrees;
Ice coating thickness: no more than 20mm;
3 Main parameters
4 Main feature
Disconnector adopts reverse type, the conductive tube is two-step operation which enables the moving contact-head to reliably connect the contact-finger. Few operational force, stable manipulation and no impact force on side pillar insulator. Main contact-head has self cleaning ability.
The contact-finger side in static contact pedestal fixed on contact-head pedestal, which combined fixed coupling for reliable conductivity. Other contact-finger side generates contact pressure on contact-head through itself elasticity and external-pressured spring. It will automatically strengthen clamping force when short circuit current passes by. Contact-finger spring is made of stainless steel material with insulating pad, which avoiding the spring rust and shunt.
Hooking plate is placed on static contact-head. When blade closed, it will lock the moving contact-head and not let it take off even under the circumstance of gale, vibration and power effect. Reverse mechanism of conductive tube is enclosed type, with anti-rain, anti-dust, anti corrosion, to operate correct and reliable.
Splint and hoop connected mode is adopted between main blade mechanism and vertical lever which connecting the body, and horizontal lever which connecting three poles of earth blade instead of soldering in working site. Horizontal lever which connecting three poles of main blade adopts positive and negative thread contact connection, which realized poleless adjustment, avoiding soldering and drilling in working site. It is both convenient for customer to installation, debugging, dis-assembly and maintenance in working site, and avoiding
corrosion and rust caused by soldering.
Company profile
Taikai Group Co., Ltd. (TK for short) is a large-scale group enterprise specializing in the production of power transmission and transformation equipment and low-voltage electrical equipment.
Taikai Group can supply all major power transmission and transformation equipment of 550 kv and below in complete sets and has the general contracting capacity for EPC substation projects. Some products are in the leading position in the world, and their voltage level reaches 1000 kV.
The comprehensive economic indicators of 36 subsidiaries of Taikai Group are in a leading position in China power transmission and transformation industry, and TK's products have achieved remarkable sales results in Chinese mainland provinces.
At the same time, TK's products have also gone out of China, exported to more than 60 countries and regions such as the United States, Canada, Russia, India, Pakistan, Poland, Uganda, Venezuela, Brazil, and achieved good results in many foreign power projects.
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FAQ
Q1:Are you a factory or trading company?
A1:We are a factory,we can guarantee our price is first-hand,very cheap and competitive.
Q2:What is payment term?
A2:We accept TT,30%deposit and 70%balance against copy of BL.
Q3:Could I have prices of your products?
A:Welcome.Please feel free to send us inquiry here.We will reply you within 24 hours.
Q4:How about delivery time?
A:Usually it will take about 15-20 days.
Q5:May I know warranty time?
A:In 12 months since BL date.
Q6:Do you accept product customization?
A:Yes,of course.Please provide specific drawings or parameters,we will quote you after evaluation.
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