Hi every one ,
I want detect the line and neutral reverse with any electronic circuit .Is there any circuit like that ?
I want detect the line and neutral reverse with any electronic circuit .Is there any circuit like that ?
I want for an automated detection circuit.For a test? or part of an automated detection circuit?
Measure between earth ground and the wire in question, the neutral should measure almost zero with respect to ground.
The hot will measure full line voltage with respect to ground.
The tricky part is having a ground!
thank you for your reply @crutschow . But i want circuit where if line and neutral gets reversed it will break the circuit.If you have a typical mains circuit with a safety ground then it's a simple matter to measure between the voltage between the hot wire and safety ground, and the neutral and safety ground.
The first measurement should give the line voltage and the second should give zero volts.
If you had said that at the beginning it would have saved a lot of unnecessary posts.thank you for your reply @crutschow . But i want circuit where if line and neutral gets reversed it will break the circuit.
thank you for u r reply @#12 but that cost is more .This is one way to break the circuit. Connect this circuit and the circuit breaker will break the circuit if the power line and neutral are reversed.
thank you u r reply @ Dodgydavei i will try thisA simple half wave diode and capacitor with a relay between Neutral and earth will detect if Phase and Neutral is reversed, or just an AC relay.
@crustchow sorry.If you had said that at the beginning it would have saved a lot of unnecessary posts.
This method with a $20.00 DP relay will cut off the supply when reversed, an extra contact could be added for indicator.Or a detect relay coil across the neutral and earth conductor.
Max.
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