Should there be a voltage across the inputs and outputs of a transformer?
I have a Bridgeport Mill that keeps tripping its breaker. The transformer on the machine takes in 240 V and outputs 120 V for the mills spindle motor. The voltage across the two inputs of the transformer is 234 V and the voltage across the two outputs is 120 V.
I then checked the voltage across the inputs and outputs:
138 V across input 1 and output 1
76 V across input 2 and output 2
112 V across input 2 and output 1
198 V across input 2 and output 2
I don't know anything about electronics, does this seem right?
Re: Should there be a voltage across the inputs and outputs of a transformer?
Re: Should there be a voltage across the inputs and outputs of a transformer?
The mill motor runs on 230V, 3 phase. Input to the transformer would be 230V and output would be 115V. You would not measure across the input to the output.
Has this mill been running or is this a new install?
