Why Tan delta testing is done? Tan delta test is conducted for transformer oil (read here) and also for electrical equipment like C.T, P.T, Transformers ,cables etc. Purpose of this test is to determine the condition of insulation. Insulating materials (oil and paper insulation on winding) may deteriorate due to moisture ingress, aging, mechanical stress … Read more
Introduction: DGA analysis (Dissolved gas analysis) of transformer oil is one of the tests that is conducted on transformer oil to know about various gases present in the oil of a transformer which in turn gives us information to assess health of a transformer. Testing of transformer oil is analogous to testing of human blood … Read more
(PC-pestech-international.com) What is a Control and relay Panel ? A control and relay Panel is an operation and monitoring equipment which is generally placed in a control room which is at some distance from the Switchyard. We also have panels which has equipment like-Circuit breaker, CT, PT installed inside the panel. All remote operations like … Read more
What is a Potential transformer and capacitive voltage transformer, Is there a difference between the two? Potential transformer– Potential transformer is used for measurement as well as protection purpose of equipment in a substation. It’s purpose is to step down High Voltage to low voltage so that it can be easily read by measuring instruments, … Read more
What is a current transformer and How does a current transformer work? A current transformer (CT) is a device to measure electric current. The purpose of a current transformer is to transform high currents into lower, more manageable levels that can be easily measured and monitored through measuring instruments. It consists of a primary winding, … Read more