voltage transformer

[Swervy]

Hi, we have a VT thatsits on top and plugs into the incomer on a 33KV switch board. The nameplate says ratio 33000/110v,
and VA Phase - 200. There is 3 ht fuses feeding transformer marked A,B,C,N . My question is, 200va per phase seems quite small if I = P/V (200VA/110V)for secondary as the transformer itself physically looks quite big.Do you think i am reading it right,not much experience on the big stuff!

 

[slavag]

Hi.
It's OK, standard VT 33000/110V 200VA.
You reading is right.Don't worry.
Good Luck.
Slava

 

[Skogsgurra]

A VT is a measuring device. Not a power transformer. So the maximum allowed load is determined by such things as accuracy and phase shift. Not thermal load. That makes the device rather big in relation to maximum load. You must also consider that insulation is the same, even for low power transformers.

Gunnar Englund

http://www.gke.org

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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[scottf]

What are you feeding with the VT? Most modern electronic meters and relays draw less than 1 VA each.