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Protection relays

Numerical Protection Relays

T&D, Substation, Motor, Generator, Transformer Protection

Numerical Protection Relays, empowered by the expertise of GK Expertise, represent the cornerstone of modern grid protection, safeguarding critical assets and ensuring the reliability and resilience of electrical power systems. With a commitment to innovation, reliability, and customer satisfaction, GK Expertise continues to lead the way in deploying advanced NPR solutions that meet the evolving needs of the power industry.

At GK Expertise, we take pride in being a trusted name in the manufacturing and supply of advanced protection relays designed for Transmission & Distribution (T&D)SubstationsMotorsGenerators, and Transformers. With a commitment to innovation, reliability, and quality, our protection relays play a pivotal role in ensuring the safety, efficiency, and uninterrupted operation of critical infrastructure across India.

Our Product Range

GK Expertise specializes in designing and supplying a comprehensive range of protection relays tailored to meet the diverse needs of modern power systems. Our product portfolio includes:

Distance Protection Relays

  • Distance Protection
  • Power swing Block
  • Auto Reclose
  • Switch onto fault
  • Direction/Non-direction Overcurrent Protection
  • Direction/Non-direction Earth Fault Protection
  • Thermal Overload

Feeder Protection Relays

  • Direction/Non-direction Overcurrent Protection
  • Direction/Non-direction Earth Fault Protection
  • Circuit Breaker Monitoring
  • Under/Over Voltage Protection
  • Line Differential Protection
  • Stub Protection

Motor Protection Relays

Protecting motors from electrical and mechanical faults.

  • Stall Protection or Rotor JAMED
  • No. of Starts
  • Thermal of Load
  • Loss of Load
  • Motor Differential
  • Reverse Power Protection
  • Over/Under Frequency Protection

Generator Protection Relays

Safeguarding generators against internal and external faults.

  • Pole Slip Protection
  • Power Protection
  • Loss of Field
  • Thermal Overload
  • 100% STATOR or Earth Fault
  • ROTOR Earth Fault
  • Frequency Protection
  • Restricted Earth Fault

Transformer Protection Relays

Ensuring the longevity and reliability of transformers.

  • Differential Relay
  • Over fluxing
  • 2nd and 5th Harmonics Block
  • Restricted Earth Fault

Line Protection Relays

  • Line Differential Protection
  • Distance Protection
  • Power swing Block
  • Sensitive Earth Fault

Bus-Bar Protection Relays

  • Busbar Differential
  • Deadzone Protection
  • LBB Protection

Applications of GK Expertise Protection Relays

Our protection relays are widely used across various industries and sectors, including:

  • Railway Systems: Ensuring the safety and reliability of railway electrification and signaling systems.

  • Power Energy Systems: Protecting generation, transmission, and distribution networks.

  • Industrial Plants: Safeguarding motors, generators, and transformers in manufacturing facilities.

  • Renewable Energy: Providing reliable protection for solar, wind, and hybrid power systems.

OC & REF PROTECTION RELAY

numerical auto transformer relay

Auto Transformer Protection Relay

numerical transformer differential protection-relay

Differential Transformer Protection Relay

numerical capacitor bank-protection relay

Capacitor Bank Protection Relay

Feeder Protection Relay

numerical delta i protection relay

Delta – I Protection Relay

Numerical Panto Flashover Relay

Panto Flashover Protection Relay

numerical ac dc supervision relay

AC DC Supervision Protection Relay

GK Expertise: Empowering India’s Power Infrastructure

With a strong focus on innovation and customer satisfaction, GK Expertise is dedicated to empowering India’s power infrastructure. Our protection relays are not just products; they are a testament to our commitment to excellence and our vision for a safer, more reliable energy future. 

For more information about our products and services, visit our website or reach out to our team. Let GK Expertise be your trusted partner in protecting your critical power systems.