What is motor protection relay?
What is motor protection relay?
Motor Protection relays are used to protect the higher HP high voltage induction motor. When we increase the motor output power according to that we have to increase the input voltage to the motor.
How do you test a motor protection relay?
Connect current and voltage source of omicron kit to motor protection relays’ current and voltage inputs respectively. Inject current in individual phase of relays, then verify the phase and magnitude of the relay. In same way inject voltage to the each phase of the relay, verify the phase and magnitude of the relay.
What are the types of protection relays?
Basic classification of protective relays includes:
- Electromagnetic Relays: Armature. Induction cup / induction disc.
- Static Relays: Analog input signals are processed by solid state devices.
- Digital / Numerical Relays: Uses programmable solid state devices based on digital signal processing.
What is MiCOM relay?
The MiCOM protection relay range provides capability for a wide variety of protection, control, measurement, monitoring, and communication. The versatile hardware and common relay management software (Easergy Studio) allows simple configuration and installation in different applications.
Why is motor protection necessary?
In order to avoid unexpected breakdowns, costly repairs and subsequent losses due to motor downtime, it is important that the motor is fitted with some sort of protective device. Built-in motor protection with thermal overload protection to avoid damage and breakdown of motor.
What are the types of motor protection?
Motor Protection – Basics and Types
- Short Circuit Protection (50)
- Locked Rotor Protection or Blocked Rotor Protection (14)
- Over Load Protection (49)
- Phase Unbalance Protection (46)
- Earth Fault Protection (50N)
How does a protection relay work?
A protection relay mainly works as a sensor. It may find out the fault location and then signal the operation of the circuit breaker. The circuit breaker cuts off the faulty system from the rest of the system and the continuity of the electrical supply is not hampered.
What are the fundamental requirements of protective relay?
Functional Requirements of Protection Relay
- Reliability. The most important requisite of protective relay is reliability.
- Selectivity. The relay must be operated in only those conditions for which relays are commissioned in the electrical power system.
- Sensitivity.
- Speed.
- Switchgear.
- Protective Gear.
- Station Battery.
What is a sepam relay?
Sepam relay continuously supervises the circuit to ensure that there is no interruption, since trip circuit continuity is vital for correct circuit breaker operation. The current also goes into the inputs of Sepam relay, which continuously monitors its presence.
Why choose Schneider Electric relays?
Today’s modern relays are much more than simple overcurrent devices. They provide power system protection as well as arc flash protection in one device all while communicating to SCADA or DCS systems seamlessly. Whether it is a new installation or a retrofit opportunity, Schneider Electric has the answer.
What are the protection relays used for?
The MiCOM 10, 20, 30 and 40 series protection relays are designed for various motor protection applications. The MiCOM P211 and P22x protection relay range are particularly adapted to oil refinery, chemical plant, metallurgy, glass and cement manufacturing, paper mills, electrical and mechanical engineering, food production, mining etc.
What is the sel-710 motor protection relay?
The SEL-710 Motor Protection Relay features the industry’s most accurate motor protection together with settings, mounting, and communications options designed for easy application.
What is the function of the Micom relay?
Models available: MiCOM P220 MiCOM P225 A complete set of protection functions is performed on the measurement of current, voltage and temperature. In addition to above basic functions, the relay carries out a large number of other functions that enable it to protect and run the motor more effectively.
