Abb Ltda.

The function of an instrument transformer is to provide accurate inputs to protection, control and measurement systems, including performance measurement.<br><br> The main functions of an instrument transformer are:<br>- To transform a current or voltage value generally to a high value of easy handling for relays and instruments.<br>- To isolate the measuring circuit of the primary system high voltage<br>- To provide opportunities for standardization of instruments and relays rated current and voltage.