• Electrical India
  • Aug 6, 2018

A proven solution to prevent transformer explosion and fire.

  • Electrical India
  • Aug 1, 2018

An in-depth analysis on how IoT based monitoring system enhances performance of distribution transformers.

  • Electrical India
  • Dec 5, 2017

If the selection of inappropriate specifications switchgears go unnoticed, it may jeopardize safety of man and machines both. Therefore, utmost care is required, while designing an electrical protective scheme as far as selection of CTs of correct specifications, switchgears, etc is concerned…

  • Electrical India
  • Nov 28, 2017

For reliable operation, power system should be robust and follow 3S characteristics like: sensitivity, selectivity and speed of the protection system. Protection system should have approach for 360° coverage and beyond for uninterrupted power supply.

  • Electrical India
  • Feb 5, 2017

The major operating challenge to transformer differential protection is maintaining security during CT saturation for external faults while maintaining sensitivity to detect low magnitude internal faults. CT saturation reduces the secondary output from the CT, and cause a false differential current to appear to relay…

  • Electrical India
  • Feb 5, 2017

Selection of the Circuit Breaker has to be done carefully, so that it does not allow the transformer to exceed the permissible winding temperature. The built-in Bi-metallic strips mounted in the Circuit Breaker, located below the top oil, achieve the temperature sensing function. The circuit breaker thus provides Thermal matching with the transformer & protects it against over loads...

  • Electrical India
  • Oct 5, 2016

Electrical equipment like transformer, generator, CTs, PTs and motor requires to be protected from over voltages. Surge arrester is used to protect these equipments from lightning and switching over voltages. Modern day’s surge arrester uses Metal oxide varistor as an active element and provides exceptional overvoltage protection to the equipment connected to the power system...

  • Electrical India
  • Jul 5, 2015

Transformers are a critical and expensive equipment in the power system network. They function as a node to connect two different voltage levels. Hence, the availability of their service is vital in maintaining the continuous power supply to consumers. Since many decades, differential protection provides the best overall protection for a power transformer to protect against faults...