PSM and TMS Settings Calculation of a Relay:
PSM and TMS settings that is Plug Setting Multiplier and Time Multiplier Setting are the settings of a relay used to specify its tripping limits. To understand this concept easily,… Read more »
Stator Earth Fault Protection-Generator:
Why Stator Earth Fault Protection is required for Generator? Nowadays, the capacity of generators increases more than 500 MW. Protection of generator is crucial to reduce the outage time. Stator… Read more »
Knee Point Voltage-Importance:
Knee Point Voltage of Current Transformers: Knee point voltage parameter is very important for Protection current transformers especially for Class-PS that is Special purpose current transformers. First of all, we… Read more »
Directional Over Current Relay [67]:
In this post operation of Directional current relay along with its settings explained. The detailed explanation about Directional relay settings with Characteristic angle, Maximum Torque angle and Polarisation voltages are… Read more »
Torque Angle versus Load or Power Angle:
These three terms Torque angle, Power angle and Load angle are associated with Synchronous machines that are synchronous generator and synchronous motor. They named as Synchronous machines as they revolve… Read more »
Ring Main Distribution with RMU:
Nowadays Ring Main units are widely used in Metro cities and smart cities for providing reliable supply to the consumers. It is essential for Electrical Engineers to know the working… Read more »
Line Differential Relay [87L]:
The principle of operation of line differential protection is same as transformer differential protection. The only difference is transformer differential protection uses only one differential relay whereas line differential protection… Read more »
Under voltage [27]/Over voltage [59] Relay:
In this post we can learn the working and configuration of Numerical Under voltage [27] /Over voltage [59] protection relay. These relays measure either phase to phase (Ph-Ph) or phase… Read more »
Core-Balance Current Transformer [CBCT]:
Core Balance Current Transformer-CBCT: Core-Balance Current Transformer CBCT also called as Zero Sequence CT. In this type of CT a single ring or rectangular shaped core of magnetic material, encircles… Read more »
Potential Transformer [PT]:
Potential or Voltage Transformer: The purpose of the Potential Transformer is to provide an isolated secondary voltage that is in-phase and exact proportionate representation of primary voltage. Potential Transformers are… Read more »