PT Connection Question
PT Connection Question
(OP)
I have a Square D Power Logic system that I wneed to connect PT's into. According to their diagrams, I can set it up as a 2PT,3CT 3 phase delta system.
The PT's I have are unusual(I think) in that they each have 6 leads. In the original circuit they were used in, they were wired such that 2 leads produced each phase voltage. In the Powerlogic System there is only 3 single wire connections and the V2 connection is ground. Has anyone wired a similar transformer in this configuration.
If I did this correctly, I attached a photo of the transformer.
http:// files.engi neering.co m/getfile. aspx?folde r=fa9ebf65 -78c5-4a5f -8d02-65fa 7c7d02c6&a mp;file=DS CN0572.JPG
The PT's I have are unusual(I think) in that they each have 6 leads. In the original circuit they were used in, they were wired such that 2 leads produced each phase voltage. In the Powerlogic System there is only 3 single wire connections and the V2 connection is ground. Has anyone wired a similar transformer in this configuration.
If I did this correctly, I attached a photo of the transformer.
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RE: PT Connection Question
RE: PT Connection Question
As said above, use a TTR to find the desired ratio and use that.
To be safe though, you really need to verify the ratings and confirm that the VT is rated to be applied line-to-line on whatever voltage circuit you have.
RE: PT Connection Question
OT