7EN02–0304–02

Using Potential Transformers

Wye system nominal voltage Requires PT

120 VAC L-N or 208 VAC L-L

no

277 VAC L-N or 480 VAC L-L

no

347 VAC L-N or 600 VAC L-L

yes

over 347 VAC L-N or 600 VAC L-L

yes

Delta system nominal voltage Requires PT

up to 480 VAC L-L

no

over 480 VAC L-L

yes

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