Transformer HV terminal box breathers
Transformer HV terminal box breathers
(OP)
Hello all,
On my site we are looking at installing silica breathers at the bottom of our transformer HV terminal boxes. We have had a few failures where water has ingresed into the terminal box and caused a flashover.
The concept is that the breather at the bottom will let any water/moisture ingress leave the terminal box as well as giving an indication that there is significant moisture present (via coulour change of the silica).
Just wondering if anyone has gone through the same process and whether they have had any pro's or cons to this.
cheers
On my site we are looking at installing silica breathers at the bottom of our transformer HV terminal boxes. We have had a few failures where water has ingresed into the terminal box and caused a flashover.
The concept is that the breather at the bottom will let any water/moisture ingress leave the terminal box as well as giving an indication that there is significant moisture present (via coulour change of the silica).
Just wondering if anyone has gone through the same process and whether they have had any pro's or cons to this.
cheers






RE: Transformer HV terminal box breathers
Regards
Marmite
RE: Transformer HV terminal box breathers
Is the water definitely coming in from outside? PD activity produces water as polymer insulation breaks down.
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If we learn from our mistakes I'm getting a great education!
RE: Transformer HV terminal box breathers
Regular maintenance of our transformers is whats letting us down most, we are on a mite site and our HV maintenance is only reciently starting to come up to scratch.
RE: Transformer HV terminal box breathers