Abnormal heat test

Resistance to abnormal heat or to fire tests determine the resistance of a plastic material comprising a part of the electrical product to occasional heat sources over 500ºC from external sources, fire, or internal sources such as short-circuits.

Test methods

The test method consists of subjecting different parts of the plastic material the test product is made of to temperatures between 650ºC and 960ºC by means of a glow wire.

The test temperature is determined by the position of the material inside the project (if it supports or carries active parts or if it is an enclosure).

During the test checks are made to see if the product has dripped, if there are any flames and the deterioration of the sample over a period of 30 seconds.