Insulator Makes Life Better 
Current position: Orient > model >

Low tension insulators

Low tension insulators include strain insulators, spool insulators, shackle insulators and LV pin insulators used on distribution overhead power lines, made from porcelain or silicone rubber.

Insulators used in a string consists of depends on the voltage, the weather conditions, the type of transmission construction, and the size of insulator use.

strain insulators

◆ Strain insulators
The strain insulator is a variation of the suspension insulator and is designed to sustain extraordinary pulls. On a transmission line, this strain insulator often consists of an assembly of suspension insulators. on a pole or towers, the strain insulators are used as stay insulators.

Because of its peculiarly important job, a strain insulator must have considerable strength as well as the necessary electrical properties. Although strain insulators come in many different sizes, they all share the same principle; that is, they are constructed so that the cable will compress the porcelain.

spool insulator

◆ Spool insulators
Spool-type insulator which is easily identified by its shape is usually used for secondary mains. The spool insulator may be mounted on a secondary rack or in a service clamp.
Both secondary low-voltage conductors and the house service wires are attached to the spool insulator. The use of such insulators has decreased greatly since the introduction of cabled secondary and service wires.
The tapered hole of the spool insulator distributes the load more evenly and minimizes the possibility of breakage when heavily loaded. The “clevis” which is usually inserted in this hole is a piece of steel metal with a pin or bolt passing through the bottom.

shackle insulators

◆ Shackle insulators
Shackle insulators are one of low tension insulators used for distribution lines, similarly to spool insulators, generally used in Africa areas.

Low tension insulators are made of porcelain or polymer, both its mechanical strength and electrical properties must be considered.


Relative Articles:
Hollow composite insulator,combination unit
Ceramic line post insulator polymer
Transmission line hardware
Silicon insulator advantages

About Us - Composite insulator manufacturer
More than 30 years experience in power industry since 1978 as a composite insulator manufacturer in China, advanced manufacturing process, strict quality control test system, ISO certificated, excellent communication, considerate services, enable us to be a leading composite insulator manufacturer of composite insulator and polymer insulator.
Our Advantage
ISO 9001 certificate
5000h Aging Type Test Report
Considerate after-sale services
Patent Product and New Technique
Instant Response for Each Requirement

©2014 Zhengzhou Orient Power Co., Ltd All rights reserved. Tel/Fax: +86 371 86097078  Orient is a composite insulator manufacturer for products of composite insulator and polymer insulator