What is protection relay?

Protection Relays are an electric device that is manufacture to input some technical condition in such a manner so whenever protection relay met that condition than relay going to react in such a manner to protect electrical system from electrical unnatural & naturel fault. Some of following is example of fault like short circuits, abnormal condition and equipment failures etc.

The main purpose behind the protection relay is protect power system, improve electrical system stability, minimize or reduce natural or unnatural damage and protect against the overloads. Generally, we protect our generators, transformer or reactors, lines, buses, capacitors in electrical power system. 

Protection relays are monitoring the electrical current or voltage of power system to detect the problem which can be incurred in future. CT’s & PT’s is help to supplier electrical current or voltage in power system.

Protection relays help to make protect, control & monitor our power system. 

Transformer Protection

An electrical device which help to transformer the voltage or electrical current from large primary power system to safe second value. The secondary current ratio is proportion ration which is actual require to run power system smoothly. Ashida Electronics develop wide range of multi-function transformer protection relay for different transformer application. Ashida Electronics has 47 year of excellent industry experience to design & manufacture digital transformer protection.