Testing for silicone composite insulators are important to ensure insulator quality and insulator performance for customers. Composite insulators should do some mechanical and electrical tests.

testing for composite insulators

Applicable product standards such as IEC 61109 require sample and routine testing for the product lots. The insulator testing includes
◆ For routine testing, a typical range of 50 – 80 % of SML is established.
◆ For tensile testing, Orient uses fully automated machines.

composite insulators

In addition to the standard test requirements, the insulator testing includes
◆ Ultimate tensile testing for transition of batches of end fittings or rods
◆ Adhesion testing
◆ Interface testing by boiling
◆ Visual hydrophobicity check
◆ Corresponding insulator life, the electrical routine test should be done

HV-testing is performed at line-to-ground voltage and evaluates the insulators for hidden electrical defects, do this test in HV laboratory.

Each insulator manufacturer should do some testing for silicone composite insulators, to show the insulators tests for clients.