Product Description
AC High Voltage Disconnect Switches are mainly applied in AC 10-40.5KV 50Hz power supply system as devices to switch the unload high voltage lines with charge adn isolate the electrical devices such as high voltage bus and breaker etc to repair.These switches are widely used in industries like electric power,railway,mining and oil flied.
Environment condition
1.Ambient temperature:-40°C-+55°C
2.Wind pressure:no more than 700pa(equivalent to a wind velocity of 35m/s)
3.Elevation:no more than 2000m
Technical standard
1.IEC62271-102:2002 "High Voltage disconnect switch"
2.GB1985-2004 "AC High-Voltage Disconnect switch and Earthing switch"
Product feature
1.Equipped with self-lock single phase made of copper the switches provides the fuction that with the structure the main contact knife will not be released from the safety device under the electrodynamical force wehn short circuit happens.This structure ensures the high reliability and safety of operation.
2.Composedof hte double-layered,cold drawn and round edged copper knife blade which is processed with silver-plating technology for preventing from oxidation the main contact knife presents the advantages such as high conductivity and low contact resistance.
3.Composed of integral cast copper elements which surfaces are silver-plated The moving and stationary contacts provide robust structure,reliable touch between the main contact knife and gongue-shape contat,large electrical contact area and good conduction.
4.The outdoor insulating post made of epoxy resin presents the performanc such as strong adaptablility and hign degree of high voltage withstand.
5.The product is characterized by novel integral structur,solidconbination,flexiblemanipulation and easy installation.
| Technical Parameter | |||||
| Item | 10KV | 20KV | |||
| Rated voltage | 12KV | 24KV | |||
| Rated lightning inpulse voltage withstand(peak) | phase to earth | 95KV | 125KV | ||
| between interrupting points | 110KV | 145KV | |||
| Rate AC voltage withstand(virtual) | phase to earth | 50KV | 60KV | ||
| between interrupting points | 60KV | 70KV | |||
| Rate frequency | 50HZ/60HZ | ||||
| Rated current | 200A,400A,630A,1000A,1250A | ||||
| Distance between interrupting points | ≥220mm~350mm | ||||
| Rated short time current withstand | 25KA,20KA 16KA/4s | 25KA,20KA 16KA/4s | |||
| Rated peak current withstand | 40KA,50KA | 40KA,50KA | |||
| Mechanical longevity(on/off time) | 2000times | ||||
| Acceptable temperature for operation | -40°C~+55°C | ||||
| Insulator creepage-distance | 410mm | 680mm | |||
Advantages:
1.Composed of integral cast copper elements which surfaces are silver-plated.The moving and stationary contacts provide robust structure, reliable touch between the main contact knife and tongue-shaped contact,large electrical contact area and good conduction
2.Injected molded in one piece with superior USA imported insulating material the outdoor insulating post provides the performances with strong environment adaptability, high degree of voltage withstand, good brittle resistance, strong self-cleaning ability,anti-bird,erosion resistance,and ultraviolet resistance
3,Composed of the double-layered,cold-drawn and round edged copper knife balde which is processed with silver-plating technology for preventing from oxidation the main contact knife presents the advantages such as high conductivity and low contact resistance