Introduce
GW4 Outdoor AC high voltage isolation switch is a two-column three-phase AC 50Hz outdoor high voltage switchgear for power systemvoltage 10-220kV,the supply voltage at no load for hours together circuits,as well as being on the high voltage bus overhaul ,circuit breakersand other electrical equipment and charged high voltage lines for circuit isolation.Pollution prevention isolating switch which can meet therequirements of users in the region re-contamination,and can effectively address the isolation switch in the operation of the flashover problem.Isolation switch is open double-column horizontal type,the composition of each single stage by the dock,post insulators,outlet andcontact other parts of the seat,the two pillars of the insulating porcelain mounted parallel to each other on both ends of the bearing base,andthe base vertical .Leading electrical part were installed in the two pillars above the porcelain insulator,porcelain insulator with pillars do 90°rotation.
Each bearing has a built-in isolation switch shaft assembly,the assembly between the two axes by connecting plates,screws and other
connecting the drive to adjust.
Refers to the middle portion of the contact pairs of the contact assembly,using self-elastic contact finger in the form of roll-in,in order to
reduce opening and closing the contacts and the contact fingers of wear and improve life.
Disconnectors with earthing switch,fan-shaped plate leading electrical circuit and grounding switch and interlock with the base of thecurved panels that switch on when leading electrical circuit,grounding switch is not closing,when the grounding switch is closed,the leadingelectrical circuit can not be closed.Chain plate chain disconnectors and earthing switches on the realization by the agency when equipped withCS8-6D.
Model and Implication
Product features
Isolating switch with double column,contact into open type structure,has the ability of self cleaning contact,improve the contact reliability;Finger made of new material with high strength,high conductivity,high elastic.Relying on the elastic contact finger clamping itself,to avoidthe spring corrosion,contact clamping fever caused by annealing
Force to reduce the contact resistance increases,the contact heat intensified the vicious spiral.
The rotating part according to the design requirements of the isolating switch maintenance free.The rotating seat designed seal structure,moisture,dust and harmful gas can not enter,bearing,molybdenum disulfide lithium base grease will never work in
A good environment,bearing,never rust,grease can not be lost,never dry up,the isolation switch operating torque will increase after longterm operation.Stainless steel shaft and oil-free self-lubricating bearing
With the structure of steel by hot dip galvanizing,ensure the isolation switch operation is flexible,portable and reliable,never rust.
Technical Parameters
| 项目Item | 单位unit | 参数Technical Parameters | |||||||
| 额定电压Rated voltage | kV | 10 | 15 | 24 | |||||
| 最高工作电压Max.operation voltage | kV | 12 | 17.5 | 27 | |||||
| 额定绝缘 水平 Rated nsulation level | 1min工频耐受电压(有效值) 1min power frequency withstand voltage | 对地 To earth | kV | 38 | 40 | 50 | |||
| 断口 Across open DS | kV | 45 | 47 | 60 | |||||
| 额定雷电冲击耐受电压(峰值) Rated lightning mpulse withstand voltage | 对地 To earth | kV | 75 | 105 | 125 | ||||
| 断口 Across open DS | kV | 85 | 120 | 145 | |||||
| 额定频率R | ated frequency | HZ | 50 | ||||||
| 额定电流Rated current | A | 200 | 400 | 630 | 1250 | 1600 | 2000 | ||
| 额定短时耐受电流Short time withstand current 4s(Eff). | kA | 6.3 | 12.5 | 20 | 31.5 | 31.5 | 40 | ||
| 额定峰值耐受电Rated peak withstand current | kA | 16 | 31.5 | 50 | 80 | 80 | 100 | ||
| 额定短路持续时间Rated duration of short-circuit | S | 4 | |||||||
| 接线端额定纵向机械负荷Rated mechanical terminal vertical load | N | 245 | |||||||
| 配用机构Mechanism supplied for disconnector | CS11-1、CS11、CS8-6D手动机构 (manual mechanism)或(or)CJ11A-G电动操动机构 (motor drive mechanism) | ||||||||
| 与隔离开关组装的接地开关额定参数 Earthing switch rated parameter for discnnector assembling | 接地开关用于切断残余电流、对动、热稳定电流不做考核 Earthing switch use for cutting off the residual current ,the dynamic and thermal current without examination | ||||||||
Normal Service Conditions
a.Altitude:1,000-2,000mb.
b.Ambient temperature:no more than 40℃ and no less than-30℃(no lessthan-40℃in alpine areas)
c.Wind pressure:<700Pa(equaling wind velocity of 34m/s)
d.Earthquake intensity:<8
e.Ice thickNess:<10mm
f.The installation location shall be free from flammable.explosive dangerousaricles,chemical corrosion and fierce vibration
g.The pollution grade of post insulator:O for general type and ll for pollutionresistance type
