The ratio of an instrument transformer refers to the proportion between its primary rating and its secondary rating. For instance, a voltage transformer (VT) with a rating of 480:120 V will have a ratio of 4:1, whereas a current transformer (CT) with a rating of 400:5 A will have a ratio of 80:1. The insulation class of an instrument transformer specifies the maximum voltage that it can endure without experiencing insulation failure. This includes the voltage between its primary and secondary windings, as well as between its primary or secondary windings and the ground (core, case, or tank). |
Comments
Post a Comment