HDPE insulator, HDPE pin type insulator
HDPE insulators are being used in recent years along with its some advantages on environment protection, and easy way to hand and install by man. It is low weight and save costs on transportation. And it is filled with putty to enlarge the puncture ability.
HDPE insulator should be injected with the HDPE material combined with some additives, to provide the ability of anti-UV and anti-aging. The injection machine should be capable enough to inject since the insulators are thick than normal products which need to be injected.
How to judge the qualification of the insulators?
HDPE insulators was developed in recent years, and there is no specific international standard on how to do test and how to qualify them. Then combined standard is suitable for them.
IEC62217: which determines most of the quality of the HDPE insulators as a polymeric one.
IEC60383: not like the silicone rubber insulators, the HDPE insulators still can be punctured, therefore the power frequency puncture test is required under oil.
The mechanical tests and the way how to assemble with the spindle should be applied.
Standard of anti-aging test should be applied too.
Since the HDPE is brittle, the extreme cold mechanical test will be needed.
Voids inspection by laser can inspect the products electrical performance.
Other tests customer need.