Auxiliary switch type according to assembly type:
Single static contact-head: none earthing switch, moving side earthing switch, static side earthing switch, double earthing switch
Double static contact-head: none earthing switch, single moving side earthing switch, single static side earthing switch, single moving side and single static side earthing switch, double moving side earthing switch, three earthing switch
Technical Specifications | GW23A-126III | GW23A-145III | GW23A-170III | GW23A-252III | |
Rated voltage kV | 126 | 145 | 170 | 252 | |
The rated current A | 2000, 3150, 4000 | 2000, 3150, 4000, 5000 | |||
Disconnector | Rated peak withstand current kA | 100, 125 | 125, 160 | ||
Rated short-time withstand current (RMS)kA | 40, 50 | 50, 63 | |||
Rated short circuit duration s | 4, 3 | 3, 3 | |||
Grounding switch | Rated peak withstand current kA | 100, 125 | 125, 160 | ||
Rated short-time withstand current (RMS)kA | 40, 50 | 50, 63 | |||
Rated short circuit duration s | 4, 3 | 4, 3 | |||
Rated short-time power frequency withstand voltage (RMS) kV | to earth | 230 | 275 | 325 | 460 |
across isolating point | 230+70 | 315 | 375 | 460+145 | |
Rated lightning impulse withstand voltage (peak) kV | to earth | 550 | 650 | 750 | 1050 |
across isolating point | 550+100 | 750 | 860 | 1050+200 | |
minimum clearance in 1 min power frequency withstand voltage when ground blade closing to live part of disconnector | 164 | 188 | 196 | 291 | |
open and close busbar for current transfer | open and close current A | 2500 | 2500 | 2500 | 2500 |
transfer voltage V | 400 | 400 | 400 | 400 | |
open and close times | 100 | 100 | 100 | 100 | |
open and close low current | capacitance current A | 1, 2 | 1, 2 | 1, 2 | 1, 2 |
inductance current A | 0.5, 1 | 0.5, 1 | 0.5, 1 | 0.5, 1 | |
Radio interference level | less than 500 μV | ||||
Mechanical life | 3000 | 3000 | 3000 | 3000 | |
rated terminal static mechanic load N | longitudinal level | 1250 | 1500 | 1500 | 2000 |
Horizontal level | 750 | 1000 | 1000 | 1500 | |
Vertical force | 1000 | 1250 | 1250 | 1250 | |
rated contact area mm | Longitudinal displacement | 100/100 | 100/100 | 100/100 | 150/200 |
horizontal displacement | 100/350 | 100/350 | 100/350 | 150/500 | |
Vertical displacement | 100/200 | 100/200 | 100/200 | 150/250 |
Shandong Taikai Disconnector Co., Ltd. is a wholly-owned subsidiary of Taikai Electric Group Co., Ltd., which is a large-scale and professional transmission and transformation equipment corporation engaged in designing and developing disconnecting switches and earthing switches ranging from 10kV to 1100kV. Our corporation covers 33,200 square meters, with a total floor space of 15,600 square meters.
Our corporation has almost 30 years' history in the field of disconnecting switch production. The yield of disconnecting switches above 126kV takes the lead in the domestic trade. The products of our corporation are distributed to customers all over the country, and are also exported to more than 10 countries and regions around the world, which keeps safe operation from Qinghai-Tibet Plateau which is about three kilometers above the sea level to Xinjiang and Inner Mongolia Autonomous Regions with severe blown-sands, from Heilungkiang province covered by ice in the winter to Guangxi and Yunnan provinces with a hot and wet summer. Our corporation is the main supplier of transformer station over 252KV demanded by the centralized invite bidding project of the State Grid Corporation of China.
''Keep the lead position in the domestic market and strive to become the first class in the world'' is the aim that our company will continuously adhere to. Our whole staff is determined and confident to expand the disconnecting switch industry, with the enterprise spirit of ''Integrity and Honesty, Pragmatism and Innovation''. Our whole staff will be specialized in making our company be the disconnecting switch base, and providing more and better service for customers at home and abroad with high-quality products, which guarantees that our company will develop into an internationally first-class corporation.