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Put an Indicator lamp on one phase of single phase no nuetral

Put an Indicator lamp on one phase of single phase no nuetral

Put an Indicator lamp on one phase of single phase no nuetral

(OP)
I wish to put an indicator lamp on one phase of a three phase supply inside a transformer rectifier. There is no nuetral. The primary of the transformer in wired in Delta so no nuetral there. Other than wiring to the earth (which I would have thought is not recommended) or installing a secondary piece of equipment is there any way of putting a indicator lamp on one of the phases?

RE: Put an Indicator lamp on one phase of single phase no nuetral

No.  You need a complete circuit, and without a neutral there is nothing other than a second phase conductor to use to complete the circuit.

RE: Put an Indicator lamp on one phase of single phase no nuetral

What do you want the lamp to indicate? Loss of one phase? Or just that the equipment is powered up?

You could connect a lamp phase to phase. If one with a suitable voltage can be found. Or you could create a something close to a neutral with a suitable selection of capacitors to divide and phase shift the three phase voltages.

RE: Put an Indicator lamp on one phase of single phase no nuetral

Could you connect the indicator to a secondary winding ?

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