gruond fault ct's

[Scott0814]

Hi,
I have a very unusaul qeustion, We haveground fault ct's that are monitoring a panel from one transformer and wired to another panel off of a second transformer, is this going to work as you have a different voltage source you from the amprage you are trying to monitor.r seen this and I am not sure about it working.

 

[waross]

Transformers will transformer current as well as amperage. Interposing transformers are used to match the CTs with the monitoring instrument or relay.
If the CT secondary is rated at 5 Amps and the monitoring device wants an input of 1 amp, then a 5:1 Amp CT may be interposed to effect an efficient match.

Bill
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