Fuzhou Faithreach Ceramics & Electronic Co., Ltd.
Main products:lamp holder,lampholder,porcelain lamp holder,halogen lamp holder,knife switch,porcelain insulator,porcelain fuse,porcelain terminal block,tile,ceramic tile,ceramic floor tile,ceramic wall tile,border,energy saving lamp,CFL,exit sign,emergency light,led bu
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  • Contact Person : Mr. Wu Andy
  • Company Name : Fuzhou Faithreach Ceramics & Electronic Co., Ltd.
  • Tel : 86-591-88070791
  • Fax : 86-591-88070705
  • Address : Fujian,Fuzhou,2#708, Phase 1, Yijinghuating, No.19 Yangqiao East road,Gulou District
  • Country/Region : China
  • Zip : 350001

cap and pin type suspension insulator for high voltage

cap and pin type suspension insulator for high voltage
Product Detailed
suspension insulator, cap and pin type suspension insulators for high voltage, More kinds of suspension insulators available

suspension insulator,

cap and pin type suspension insulators for high voltage,item  no. : 52-1&52-10.

good quality and better price for suspension insulator.

Introduction       Higher voltage use modular cap and pin insulator designs . The wires are suspended from a 'string' of identical disk-shaped insulators which attach to each other with metal clevis pin or ball and socket links. The advantage of this design is that insulator strings with different , for use with different line voltages, can be constructed by using different numbers of the basic units. Also, if one of the insulator units in the string breaks, it can be replaced without discarding the entire string. They are constructed of a ceramic or glass disk with a metal cap and pin cemented to opposite sides. In order to make defective units obvious, glass units are designed with Class B construction: an overvoltage causes a puncture arc through the glass. The glass is heat-treated so it will shatter, making the damaged unit visible. However the mechanical strength of the unit is unchanged, so the insulator string will stay together. Standard disk insulator units are 10 inches (25 cm) in diameter and 5+3⁄4 in (15 cm) long, can support a load of 80-120 k (18-27 klbf), have a dry flashover voltage of about 72 kV, and are rated at an operating voltage of 10-12 kV. However, the flashover voltage of a string is less than the sum of its component disks, because the electric field is not distributed evenly across the string but is strongest at the disk nearest to the conductor, which will flashover first. Metal grading rings are sometimes added around the lowest disk, to reduce the electric field across that disk and improve flashover voltage.

cap and pin type suspension insulator for high voltage



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