Learn Electrical Engineering
Understanding Rated Insulation Levels in High-Voltage Systems High-voltage equipment needs strong insulation to work safely, reliably, and efficiently. Rated insulation levels show how much stress the insulation can handle, such as lightning strikes, sudden electrical surges, or power overloads. To ensure everything works consistently everywhere, organizations like the IEC and Indian Standards (IS: 13118) have … Read more
Rated Voltage: 36kV Rated Insulation Level:
Type Tests for a 36kV Class Vacuum Circuit Breaker (VCB) As per IS: 13118, these type tests include: These tests are intended to ensure that the circuit breakers perform reliably, safely, and efficiently under various operating conditions. Routine Tests for a 36kV Vacuum Circuit Breaker (VCB) As per IS: 13118, the routine tests include the … Read more
What is a partial discharge in an insulation system? A partial discharge (PD) in an insulator system is a localized electrical discharge that occurs when the electric field within the insulation exceeds its dielectric strength in specific areas, without completely bridging the insulating material between conductors. When high voltage is applied to an insulation system, … Read more
Testing of Current Transfomers The type tests of current transformers, as per the uploaded document IS 2705 (Part 1): 1992, are as follows: The routine tests of current transformers as per the document are:
Current transformers (CTs) play a crucial role in power systems, especially in protection and metering applications. Among the key parameters that define their performance is the Accuracy Limit Factor (ALF). This article provides an in-depth understanding of the ALF, its significance, and its impact on the reliable operation of protection systems. What is Accuracy Limit … Read more
Type Tests of Isolators as per IS 9921 (Part 4) – 1985 The type tests of isolators are conducted to ensure that the isolators meet the performance criteria under standard operating conditions. According to IS 9921 (Part 4) – 1985, the type tests of isolators can be broadly categorized into the following: These type tests … Read more