Electricity Forum

A Transformer Protection Relay Demands More Than Overcurrent Logic

A transformer protection relay does not replace upstream devices. It defines responsibility. By clearly assigning fault ...
Electrical Construction & Maintenance

NEC Guidelines for Transformer and Transformer Feeder Protection

Note: All Code references are based on the 2014 NEC. The NEC has separate sections for transformer feeder protection and transformer protection. Article 240 lists requirements for transformer feeder ...