How Does A Protective Relay System Works

Protection relays are protective circuits that work with electrical lines and connections of a premise so that electrical system malfunctioning in a house cannot harm any individual or it cannot damage any equipment. Different types of protective relay systems are found, however, all of them work on a fundamental point: they detect an anomaly in the first stage of malfunctioning of electrical system and either eliminates or significantly reduce the malefic effect.

Protective relay systems works in different ways. Some of the prime functions are discussed here. These electrical components ensure protection to prevent electrical leakage, short circuit, and other relatedelectrical accidents.

Protective Relays Can Detect That A Problem

Sometime external pollutants like moisture, dust, chemicals, overload issues, vibration, normal aging of electrical components causes deterioration of insulation, which may lead to severe accidents any point of time unless detected. A Protective Relay System if installed in an electrical circuit can detect these problems in its initial stage and help by proper indication about the problem inherent in system so that further damage can be controlled or prevented.


Protective Relays Detects Fault Contributors With Better Efficiency

Protective relays if installed in sophisticated gadgets’ installation lines, it can sense fault contributors like overheating, over voltage etc., problems and immediately disconnect the lines so that gadgets remain safe. These relay systems works with advance protection than common use and circuit breakers and hence offer better level of electrical safety.

Protective Relays Can Work As A System Analyzer

There are instances when protective relays are installed for analyzing the frequent problem in an electrical line where power interruption is becoming a regular problem. An advanced protective relay system can immediately detect overcurrent problem by measuring the input current and allows the user to program to limit (settings) into the relay. According to Edison Software Development Centre, these advanced Protective Relay Systems Development can prevent major electrical problems, which is safe for users and well as for a premise and their investment on costly gadgets.

Different Types Of Protective Relays:

Depending of functionality, different types of protective relays are available in market. These are:

  • Definite time relays
  • Instantaneous relays.
  • IDMT with inst.
  • Inverse time relays with definite minimum time(IDMT)
  • Stepped characteristic.
  • Voltage restraint over current relay.
  • Programmed switches.

Based on operation mechanism, different variants of protection relay can be used: these are,

  • Electromagnetic relay,
  • Static relay,
  • Mechanical Relay.

Actually protection relay is a balanced combination of one or more than one open or closed contact circuits. The relay assemblies can change their state when activating parameters are applied to the system.

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