Disc suspension porcelain insulator for high voltage line
Product introduction:
- Disc suspension insulator, referred to as suspension insulator for short, is used for AC overhead power lines, substations and electrified iron with rated votage higher than 1000V and frequency not higher than 100 Hz lt is used as insulation and fixed conductor in the overhead contact system.
- Due to its structural characteristics, disc insulators have obtalned superior mechanical and electrical strength. In addition.¥through the serlal connection of components, we can obtainInsulator strings of different voltage levels, so they are widely used inhigh-Voltage, utra-high voltage and ultra-high voltage lines, and are important line insulators. Disc insulators are generally connected in series, so insulator units do not have a certain rated voltage, but are divided into 40, 70. 100, 120. 160, 210240.300,420 (400),550 (530).
Disc suspension porcelain insulators are made of iron caps, insulating parts (porcelain parts) and steel feet bonded withcement adhesives. - According to the use requirements, they can be divided into ball and socket connection and groove connection. disc There arethree main types of C-shaped suspension porcelain insulators: ordinary type, belljar type and aerodynamic type. The aerodynamic type is divided into single umbrella, double umbrella and triple umbrella.
Technical standard:
- GB/T 1001.1-2003 insulators for overhead lines with nominal voltage higher than 1000V Part 1: ceramic or glass insulator units for AC systems – Definitions and test methods And judgment criteria
- GB /T 4056-2008 ball and socket connection dimensions of insulator string elements
- GB/T7253 – 2005 insulators for overhead lines with nominal voltage higher than 100oV – Characteristics of porcelain or glass insulator units for a.c. systems – disc suspension insulator units
