GW4-252(D)(W)
It adopts a robust double-column horizontal rotary structure and high-quality copper-tungsten conductive components. The switch features ultra-low contact resistance and excellent conductivity, maintaining stable long-term current carrying capacity and effectively avoiding overheating during continuous operation.
Equipped with high-strength anti-fouling insulators with extended creepage distance, the equipment delivers superior insulation performance and strong anti-interference ability. It adapts to high altitude, heavy pollution, humid and coastal environments to ensure safe and reliable isolation status.
All metal parts adopt hot-dip galvanized anti-corrosion technology, with excellent resistance to rust, oxidation and salt fog erosion. The optimized outdoor structure adapts to extreme weather, supporting stable all-weather long-term operation.
Fitted with standard anti-misoperation mechanical interlocks, the GW4-252(D)(W) supports manual and electric operation. It features high mechanical stability, easy installation and low maintenance, reducing operational costs for UHV power grid construction.
As core isolation equipment for 252kV ultra-high voltage power systems, this outdoor disconnector has stable performance and strong environmental adaptability. We provide global customers with factory direct supply, complete certification documents and professional after-sales service.
Product Details
GW4-252(D)(W)
Outdoor high voltage AC disconnecto
□ Meaning of type
□Introduction
□A set of disconnector consists of GW4-252(D)(W)disconnector body, CS14G or CS17Gmanual operating mechanism,driven accessories and so on,it can also match with CJ6 dynamoelectric operating mechanism.
□The disconnector has horizontal opened double-strut structure,and every single pole consists of base,post insulator,outlet base,contact and so on.The two post insulators are parallel,and they are vertically mounted on the bearing by the two sides of the base.The main conductive parts are respectively mounted on top of the two post insulators,and they are turning for90°along with the post insulators.
□The bearing base of the disconnector has totally-enclosed structure,it can prevent the dust,humidity and deleterious gas come into the innerof the bearing which could causethe blockphenomenon.The ball thrust bearing and annular ball bearing is mounted in the bearing base for bearing the weight and the horizontal component to make sure that the operating force moment will not increase when the disconnector is running long The two bearings of every pole are connecting and driving through the connecting board,adjusting screw and so on.It uses stainless steel shaft pin and self lubricating sleeve pipe,and the lubricant is molybdenum disulphide lithium grease.
□The red copper braids in the outlet base are respectively fixed on the conducting rod and connecting board,and the connecting board is used for connecting the circuit.
□The contact fingers of the intermediate contact parts are assembled in pairs,it uses springs to clamp contact finger base and contact to improve the useful life.
□The fanning plates and arc plates in the base are used to insure the linking between main conductive loop and ground switch when the disconnector matches with ground switch.The ground switch can't switch-on when the main conductive loop is switching-on;the main conductive can'tswitch-on when the ground switch is switching-on.
□Technical data
|
Item |
Unit |
Value |
|||
|
Rated voltage |
kV |
252 |
|||
|
Rated InsulatIng level
|
a) 1mlnpowerfrequency wlthstand voltage(valldvalue) |
To the earth |
kV |
460 |
|
|
Interrupter |
kV |
460+145 |
|||
|
b) Rated thunder impulse withstand voltage(peak) |
To the earth |
kV |
1050 |
||
|
Interrupter |
kV |
1050+200 |
|||
|
Rated frequency |
Hz |
50 |
|||
|
Rated current |
A |
1250 160020002500 |
|||
|
Rated short time withstand current |
KA |
31.5 |
|||
|
Ration peak withstand current |
KA |
80 100 125 125 |
|||
|
Rated short-clrcult duratlon Maln/earthing blade |
S |
3/2 |
|||
|
Rated terminal mechanical load |
Horlzontal portralt |
N |
1500 |
||
|
Horizontal transverse |
N |
1000 |
|||
|
Vertical force |
N |
1250 |
|||
|
Creepage distance |
mm |
504063007812 |
|||
|
Mechanical life |
Times |
10000 |
|||
|
Electromotor operating mechanism |
Type |
|
CJ6B |
||
|
Motor voltage |
V |
AC380、AC220、DC220、DC110 |
|||
|
Controllopvoltage |
V |
AC220、AC380、DC220、DC110 |
|||
|
witch-off/on time |
S |
8±1 |
|||
|
Manual operating mechanism |
Type |
|
CS9、CS14G、CS17G |
||
|
Electromagnetic lock voltage |
V |
AC220、DC220、DC110 |
|||
□Outline dimension
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