Disconnect Switches

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Double column AC high voltage isolating switch

Product Overview

Double Column Series Outdoor Column Mounted Disconnect Switches (hereinafter referred to as Disconnect Switches) are hook-and-bar operated disconnect switches with self-locking devices for the gate knives. This series of disconnect switches is suitable for isolation of 12Kv ~40.5kV overhead lines, opening and closing operations without load, and the main function is to isolate the voltage during maintenance of the equipment or lines to ensure operational safety. Used in conjunction with circuit breakers or load switches and to provide a safe visible break in the line.
Standards and Applications
● This product is a three-phase AC frequency 50Hz outdoor high-voltage power transmission equipment, which is used to disconnect or connect high-voltage lines without load, so as to change the connection of high-voltage lines, change the mode of operation, as well as implement safe electrical isolation of high-voltage electrical equipment such as buses and circuit breakers for maintenance.
● This product complies with the following standards.
IEC62271 I102 (AC high voltage disconnecting and earthing switches)
GB/T 11022一1999'Shared technical requirements for high-voltage switchgear and control equipment standards)
GB 1985-2004 (High-voltage AC disconnecting and earthing switches))
GB/T 5582-1993 High-voltage power equipment, external insulation filth level
GB/T 311.22002 insulation fit part 2: high voltage power transmission and transformation equipment insulation with the use of guidelines.
Conditions of Use
• Ambient air temperature: -40℃~+55℃
• Wind pressure: no more than 700 Pa (equivalent to wind speed 35m/S)
• Altitude: the altitude does not exceed 2000m,
product code

Product Model

Isolation switch series

Product Structure Features
● Simple structure, easy to install and use.
● The base is made of stainless steel plate or hot-dip galvanized steel plate, which ensures reliable operation and anti-corrosion performance: Square diameter bolts are used to match the square holes on the base plate, which is convenient for actual installation.
● Pillar insulators epoxy resin insulators, with water-repellent, self-cleaning, UV-resistant, not subject to weather and aging performance: silicone rubber insulators, not only minimize the weight of the product, at the same time with good hydrophobic properties; ceramic insulators, with anti-aging properties.
● main circuit design: the use of symmetrical double static contact design, the product has a dual circuit conduction, and at the same time fastening the rotary The part is in the position of non-dominant electric circuit, which ensures low temperature rise under normal operation. The components of the main conductive circuit, such as moving and static contacts, knife gate piece adopt copper, silver-plating process, which effectively enhances the conductivity of the product.
● Terminal: the use of standard two-hole wiring, copper row, copper hole size and hole spacing in line with the domestic common practice, to facilitate user installation.
● Knife gate limit device: can enhance the stability of knife gate operation, with 900 or 1600 two limit mode. The default factory mode is 900, if you need 160" limit or no limit can be adjusted.
● Operation ring: The lever design of the ring and the rotating locking pin is easy to operate and improve the ice-breaking ability.