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Current transformer class 5L400

Current transformer class 5L400

Current transformer class 5L400

(OP)
Dear Members,

Please anybody tell me about the current transformer 5L400

What is the explanation of the 5L400

I know the other classes 10P10,5P10,ClassX,but for me this is new thats why i(5L400) am asking.

RE: Current transformer class 5L400

My educated guess based on CSA (Canadian) and older IEEE/ANSI (USA) standard nomenclature for protection class CTs:

5 = composite error (5%) at the accuracy limiting factor (ALF) which in this case might be 20

L = low leakage design, i.e., ring-type core with fully distributed windings

400 = secondary terminal voltage at the ALF, in this case would relate to burden of 100VA at 5A, or 4 ohms

Current CSA classes are 2.5L and 10L. Perhaps knowing where this CT currently is, or is going geographically, may shed more light on the class definition.

RE: Current transformer class 5L400

(OP)
Thank so much for you reply randyman

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