Electric Relays and Protection Relays by Application

Schneider Electric India carries a comprehensive range of electric relays that facilitate relentless protection and stability, which is a must at the top-level - be it motor or overcurrent to complex distance protection.

These electric relays, also referred to as differential relays, are suitable for many applications across medium-voltage and high-voltage protection. Connected to a IEC 61850, it guarantees smooth interoperability and communication across MV and HW power networks.

An electric relay is an electromagnetically controlled electrical switch, also known as an electromechanical switch which uses small current to create a magnetic field in a coil within a magnetic core that is used to operate a switch to command a much larger current. With this function, an electromechanical relay or electric relay can use a small current to switch a much larger current to ensure that both circuits are electrically isolated from each other. Schneider Electric India's range of electric relays come in distinct sizes and different types based on the various innovative technologies. However, they all work using the same fundamental concept.

Feeder protection is protecting a feeder from damage so that the power grid can continue to supply energy. The feeder is responsible for delivering electrical energy from the substation to the load end. As a result, it is critical to ensure feeder protection relay from various faults.

Feeder Protection Relay Benefits

A Feeder protection relay acts primarily as a sensor. It determines the location of the issue and then activates the circuit breaker. The circuit breaker isolates the malfunctioning system from the rest, ensuring that the electrical supply remains uninterrupted.

• Fault Detection and Quick Response
  Feeder protection relays swiftly identify faults like overloads, short circuits, or earth faults in power distribution systems. An electrical system benefits from its quickness in isolating the faulty section. This, in turn, prevents damage to equipment and reduces downtime.
• System Reliability and Continuity
  These relays enhance the overall reliability of the electrical network by their quick isolation feature. This helps ensure uninterrupted power supply to critical loads, reducing the risk of outages and improving system continuity.
• Equipment Protection
  Feeder protection relays safeguard electrical equipment, such as transformers, switchgear, and cables, from damage caused by excessive currents or faults. In fact, they prevent further harm to costly assets by isolating the faulted section.
• Safety Enhancement
  Securing the safety of workers on electrical systems is one of the most important tasks. Here, feeder protection relays play an important role in creating a safer work environment by rapidly isolating faulty sections. This proactive response significantly lowers the chances of electric shocks or fire hazards, ensuring a more secure workplace for personnel.
• Fault Location and Analysis
  These relays provide valuable data and information about the location and type of faults that occur within the electrical system. This data aids in troubleshooting, analysis, and maintenance, facilitating faster restoration after an outage.