According to IEC60884 clause 28.1.1,parts of insulating material which might be exposed to thermal stresses due to electric effects, and the deterioration of which might impair the safety of the accessory,shall not be unduly affected by abnormal heat and by fire.
The test is performed according to IEC 60695-2-10 (glow-wire test apparatus) under the following conditions:
– for parts made of insulating material, necessary to retain current-carrying parts and parts of the earthing circuit of fixed accessories in position, by the test made at 850 °C, with the exception of parts of insulating material needed to retain the earth terminal in position in a box, which shall be tested at a temperature of 650 °C;
– for parts of insulating material, necessary to retain current-carrying parts, and parts of the earthing circuit of portable accessories in position, by the test made at a temperature of 750 °C;
– for parts of insulating material, not necessary to retain current-carrying parts and parts of the earthing circuit in position, even though they are in contact with them, by the test made at a temperature of 650 °C.
ZLT Glow Wire Test Apparatus meets the IEC60884 and IEC60695-2-10 requirements.
ZLT Glow Wire Test Apparatus was sold to SGS,TUV SUD,ITS and other company.
