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Post Insulators

INDOOR POST INSULATORS

EPOXY RESIN MEDIUM VOLTAGE INSULATORS 

Application

 

Epoxy cast resin indoor post insulators can be used for all indoor applications.

For tropical conditions same types (with special fixing parts) are available.

They are suitable for temperatures from -25 °C up to +90 °C

 

Construction

 

Epoxy cast resin indoor post insulators are cylindrical solid insulators, with proper creepage and number of ripples. The main dimensions are in accordance with IEC 60273 - 1990. Auxiliary inserts are connected with main insert electrically.

 

Tests

The following tests, according to IEC 60660 - 1990 are performed:

Routine tests

Visual inspection

Testing of conductive connection of fixing inserts for post insulators type B (IEC 60660 1999)

Power-frequency withstand voltage (dry)

Partial discharge measurement

 

Sample tests

 

Testing of minimum failing load for bending,

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