I need a transformer!
I need a transformer!
(OP)
I need a three phase 10VA, 1000V, step down transformer with either a 120V, 240V, 480V, or 600V secondary. I have been looking for hours with no luck... Does anyone know of a manufacturer off hand? All this transformer is going to feed is a small three phase voltage monitor... I can purchase these voltage monitors in 120v, 240v, 480v, and 600v models so any of these secondaries would be fine with me. Thanks in advance!





RE: I need a transformer!
An idea of your location would help - it's probably the US like everyone else who doesn't say, ha-ha - but if you're really stuck you might find (say) Baldwin & Francis in the UK would be prepared to sell you one or two as spares for their mining gear. You probably want 60Hz too, but at least the laws of physics are in your favour and you can likely run a 50Hz VT at 60Hz without major concerns.
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If we learn from our mistakes I'm getting a great education!
RE: I need a transformer!
RE: I need a transformer!
Bill
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"Why not the best?"
Jimmy Carter
RE: I need a transformer!
RE: I need a transformer!
With a North American background I sometimes assume grounded wye systems.
As a kludge, and at that voltage, back in the day, we would consider the standard megger test of the time of twice working voltage plus one thousand Volts and give it a try. While not perfect, a balanced voltage and the onset of saturation will give some secondary voltage and phase angle stability. A delta connected secondary will give a level of stability related to the impedance of the transformers. (%Z x 3)
Bill
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"Why not the best?"
Jimmy Carter
RE: I need a transformer!
RE: I need a transformer!