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Testing and commissioning of Surge Arresters: Easy learning (2024)

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Surge arresters Surge arresters are also sometimes called as lightning arresters (but technically they are different), they are used to protect electrical systems from voltage surges or transient over-voltages. Transient means anything which happens for a very short period of time. These surges can occur due to various factors such as lightning strikes, switching operations, … Read more

Testing and commissioning of control and relay Panel-05 Important tests.

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(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

Testing and commissioning of Potential Transformer and Capacitive Voltage transformer-03 Important tests.

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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

How are current transformers tested ? 08 Important tests.

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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

Understand Electrical Drawing of closing circuit in 03 easy steps

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To understand the drawings and comprehend the different connections it is important to know the meanings of basic electrical symbols in the drawing , this helps in quick understanding the drawings and also helps in troubleshooting the circuit if required. 1.Symbols of Electric Equipment in Electrical drawing First step of understanding the drawing of any equipment or … Read more