550kV Substation hollow composite insulator

Product Introduction

Post composite insulators are composed of core rods, end fittings, and silicone rubber shed sheaths. They are mainly used for insulation and mechanical fixation of busbars and electrical equipment in power plants and substations. Their categories include post composite insulators for busbars, post composite insulators for reactors, composite insulators for disconnectors, and other high-voltage electrical equipment.

The connection between epoxy resin glass fiber rods and fittings adopts a crimping process, with crimping parameters digitally controlled, ensuring consistent and reliable mechanical performance. The sheds and sheaths are made of silicone rubber, and the shed shape adopts an aerodynamic structural design, with excellent pollution flashover resistance. The sealing of sheds, sheaths, and end fittings adopts the integral injection molding process of high-temperature vulcanized silicone rubber, with reliable interface and sealing performance.

Hollow composite insulators consist of aluminum alloy flanges, glass fiber-reinforced resin sleeves, and silicone rubber shed sheaths. They are commonly used in high-voltage electrical equipment such as GIS combined switches, transformers, mutual inductors, capacitors, arresters, cable accessories, and wall bushings.

The connection between glass fiber-reinforced resin sleeves and aluminum alloy flanges adopts the process of placing sealing rings, then pressurizing and bonding with epoxy glue, with parameters digitally controlled, ensuring consistent and reliable mechanical performance. The sheds and sheaths are made of silicone rubber, and the shed shape adopts an aerodynamic structural design, with excellent pollution flashover resistance. The sheds, sheaths, and end fittings adopt the integral injection molding process of high-temperature vulcanized silicone rubber, and the sealing of end fittings adopts the combined sealing molding process of high-temperature and room-temperature vulcanized silicone rubber, with reliable interface and sealing performance.

Product Features

• Silicone rubber has excellent hydrophobicity and migration properties, with excellent pollution flashover resistance. It can operate safely in heavily polluted areas without manual cleaning or zero-value detection and maintenance.

• Reliable structure, stable performance, large safety margin for operation, high mechanical strength, and good seismic performance, avoiding phenomena such as porcelain breakage, collapse, and explosion, and providing guarantee for the safe operation of power stations.

• Excellent high and low temperature resistance, atmospheric aging resistance, and ozone aging resistance.

• Light weight, convenient for transportation and installation.

Main Parameters

• Voltage class: 550KV

• Structure height: 5285mm

• Maximum Mechanical Load (MML): 98kN·m

• Specified Mechanical Load (SML): 245kN·m

• Maximum Service Pressure (MSP): 0.8Mpa

• Specified Service Pressure (SIP): 3.2MPa

• Creepage distance ratio: 31mm/kV

• Inner diameter of tube: Φ350mm

• Outer diameter of tube: Φ400mm