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Polymer insulator testing

Test specimens used for the polymer insulator testing in insulator specification shall have clean insulating surfaces.

Polymer insulator testing             Polymer insulator testing

Electrical tests belong to polymer insulator testing including
◆ Low frequency dry flashover voltage tests
◆ Low frequency wet flashover voltage tests
◆ Low frequency dry withstand voltage tests
◆ Low frequency wet withstand voltage tests
◆ Low frequency dew withstand voltage tests
◆ Impulse flashover voltage tests
◆ Impulse withstand voltage tests
◆ Radio-influence voltage tests
◆ Visual corona test
◆ Puncture tests

Mechanical tests belong to polymer insulator testing including
◆ Ultimate mechanical strength tests
◆ Combined mechanical and electrical strength test(usually composite suspension insulator)
◆ Time- load test
◆ Porosity test
◆ Thermal test
◆ Pinhole gaging test

Galvanizing test is one of polymer insulator testing for ensure the quality of polymer insulator mechanical strength.

 

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