Hi guys,
Just joined up to ask you all a question, and hopefully contribute some knowledge in the future.
I am working on a project that will allow an operator to connect a multi-tap transformer to some test leads and it will step through each primary voltage, and read the secondary voltage. A PLC will be monitoring the voltage to let them know it is good, and to step through each voltage test.
That's the easy part...there is one tiny, annoying detail that I'm trying to work through. The transformers being tested have dual secondary outputs: one continuous duty 120VAC @ 25VA and one 50% duty 120VAC @ 300VA. It needs to be able to tell if the operator has those two connections switched in the transformer assembly.
How in the world can I tell the difference between the high and low secondaries?
I've thought of maybe applying a load on on the transformer secondary that is right at the max VA and see if the voltage drops? But I'm worried about damaging the transformer...and we can't have a tester damaging every transformer it tests
Any ideas at all?
Thanks!
Just joined up to ask you all a question, and hopefully contribute some knowledge in the future.
I am working on a project that will allow an operator to connect a multi-tap transformer to some test leads and it will step through each primary voltage, and read the secondary voltage. A PLC will be monitoring the voltage to let them know it is good, and to step through each voltage test.
That's the easy part...there is one tiny, annoying detail that I'm trying to work through. The transformers being tested have dual secondary outputs: one continuous duty 120VAC @ 25VA and one 50% duty 120VAC @ 300VA. It needs to be able to tell if the operator has those two connections switched in the transformer assembly.
How in the world can I tell the difference between the high and low secondaries?
I've thought of maybe applying a load on on the transformer secondary that is right at the max VA and see if the voltage drops? But I'm worried about damaging the transformer...and we can't have a tester damaging every transformer it tests
Any ideas at all?
Thanks!