Transformer life is determined by the condition of the solid insulation (the paper). Normal Kraft paper will begin to accelerate thermal ageing at 95 degrees Celsius and thermally upgraded paper will begin accelerated ageing at 110 degrees Celsius. The IEC 76-2 standard commonly accepts WTI...
Hi guys,
Do either of you have a good spec for testing 11kV indoor switchgear?
I am extending an 6.6kV SB for our customer by adding a couple of CBs.
I was going to recommend the following tests but would welcome any comments and suggestions:
1. Ducter new bus connections
2. 5kV Megger
3...
Thanks for the advice Marmite. Interestingly we have posed this question to the customer already and their response was that they want compliance to the latest and greatest Australian standards.
Regards,
-polo78
Hi guys,
I need to design a substation's (33/11kV 3x15MVA transformers) earth grid. My problem is that I can’t clearly find what compliance I need to achieve to conform to the Australian Standards. If I refer to substation earthing guide ENA EG1-2006 there is a clear statement which reads "It...
