Energizing transformer- Why the spark?
Energizing transformer- Why the spark?
(OP)
I can't say I have ever seen my POCO's transformers do this. Then again I've never watched one switched on at night in the dark. But for the curious me, why do orange sparks shoot out of the sides at 5:08 and 6:47 when they are switched on? Is this even supposed to happen?
https://www.youtube.com/watch?v=nwopW_SmZ8E
https://www.youtube.com/watch?v=nwopW_SmZ8E






RE: Energizing transformer- Why the spark?
RE: Energizing transformer- Why the spark?
RE: Energizing transformer- Why the spark?
Muthu
www.edison.co.in
RE: Energizing transformer- Why the spark?
I think it's quite likely that the camera made it look a lot more energetic than it really was. I filmed some arc-flash tests at IPH in Berlin using my still camera on movie setting and it looked a whole lot more vivid than it did on IPH's high speed movie camera set up to record the tests for the official test records. Both the persistence and colour of the sparks / flames were exaggerated by my camera into Hollywood-style drama.
RE: Energizing transformer- Why the spark?
The worst situation that I met with was in a 570 MVA 132kV 3 phase GSU (tank length nearly 11 metres) where the paint on connecting bolts got burnt due to this arc and current flow. Problem was solved by adding more equalising connections between cover and tank.
Similar arc across tank band can be seen when ever transformers are short circuit tested (applying rated voltage on HV with LV shorted) at High Power labs. Here over current(5 to 25 times full load current,depending on percentage impedance)boosts up the leakage flux between HV and LV windings (depending on MVA and % impedance) that closes through tank cover and tank. Intensity of arc will be more than in case of switching on and will be there always.
RE: Energizing transformer- Why the spark?
RE: Energizing transformer- Why the spark?
RE: Energizing transformer- Why the spark?
RE: Energizing transformer- Why the spark?
How often does it become visible?
RE: Energizing transformer- Why the spark?
You may want to remove that from youtube...
RE: Energizing transformer- Why the spark?
RE: Energizing transformer- Why the spark?
RE: Energizing transformer- Why the spark?
RE: Energizing transformer- Why the spark?
RE: Energizing transformer- Why the spark?
However, would you really want another utility with more stringent (better) safety standards using your video as an example of what NOT to do?
I'm just not sure I would post that publicly for others to take advantage of.