Electrical Engineering Guides

Power Systems

AC Potentiometer

Definition A potentiometer that measures the phase and magnitude of an unknown electromotive force (emf) by comparing it with a known emf is called an AC potentiometer. The working principle of an AC potentiometer is the same as that of a DC potentiometer, that is, the unknown voltage is determined

By Edwiin 04/29, 2025
Power Systems

Hot Wire Instrument

Definition A hot - wire instrument is defined as a type of measuring device that utilizes the heating effect of an electric current to determine the magnitude of that current. Its operation is based on the principle that when an electric current passes through a wire, the heat generated causes the w

By Encyclopedia 04/24, 2025
Power Systems

Thermocouple Instrument

Definition A thermocouple instrument is defined as a measuring device that utilizes a thermocouple to determine temperature, current, and voltage. This versatile instrument is capable of making measurements in both alternating current (AC) and direct current (DC) circuits, making it a valuable tool

By Encyclopedia 04/24, 2025
Power Systems

What is Capacitive Voltage Transformer?

What is Capacitive Voltage Transformer? Definition: A capacitive voltage transformer (CVT), also known as a capacitive potential transformer, steps down high - voltage input signals to provide low - voltage signals that can be easily measured by measuring instruments. The capacitive potential divide

By Edwiin 04/12, 2025
Power Systems

What is Dual Trace Oscilloscope？

Dual Trace Oscilloscope Definition: In a dual - trace oscilloscope, a single electron beam generates two traces, which are deflected by two independent sources. To produce these two separate traces, two main methods are employed: the alternate mode and the chopped mode. These are also referred to as

By Encyclopedia 04/11, 2025
Power Systems

What is Electronic Voltmeter?

What is Electronic Voltmeter? Definition An electronic voltmeter is a voltmeter that utilizes an amplifier to enhance its sensitivity. It is capable of measuring the voltages of both AC and DC devices. Thanks to its high input resistance, the electronic voltmeter provides accurate readings. A moving

By Encyclopedia 04/11, 2025
Power Systems

What is Differential Voltmeter ？

What is Differential Voltmeter ？ Definition: A voltmeter that measures the difference between a known voltage source and an unknown voltage source is called a differential voltmeter. It operates based on the principle of comparing the reference voltage source with the unknown voltage source. The dif

By Encyclopedia 04/11, 2025
Power Systems

What is No Load Test of an Induction Motor?

The No - Load Test serves as an indirect approach for ascertaining the efficiency of three - phase induction motors. It also enables the determination of the circuit parameters of their equivalent circuits. Similarly, the open - circuit test is carried out on transformers. In fact, the no - load tes

By Encyclopedia 04/08, 2025
Power Systems

Back-to-Back Test (Sumpner’s Test) on Transformer

Definition Conducting a full - load test on a small transformer is quite convenient. However, when it comes to large transformers, this task becomes extremely challenging. The maximum temperature rise in a large transformer is typically determined through a full - load test. This particular test is

By Encyclopedia 04/07, 2025
Power Systems

SF6 gas detection thermal camera high voltage substation

One method for detecting SF6 gas leakage in a substation is to use a reliable infrared camera with SF6 gas detection capabilities. This enables the identification of potential leaks during routine maintenance rounds. These new - generation infrared cameras integrate a high - performance thermal imag

By Edwiin 03/28, 2025
Power Systems

Lightning impulse voltage withstand test for circuit breakers

Lightning impulse voltage (LIWL) tests and switching impulse voltage tests are carried out to assess the dielectric stress resulting from transient over - voltages induced by lightning strikes and switching operations respectively. An impulse voltage generator produces a steep - front voltage wavefo

By Edwiin 03/27, 2025
Power Systems

What is Fluxmeter？

What is Fluxmeter？ Definition A flux meter is an instrument designed to measure the magnetic flux of a permanent magnet. It represents an advanced iteration of the ballistic galvanometer, boasting certain advantages. Specifically, the flux meter features low controlling torque and significant electr

By Encyclopedia 03/25, 2025

Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

All

AC Potentiometer

Hot Wire Instrument

Thermocouple Instrument

What is Capacitive Voltage Transformer?

What is Dual Trace Oscilloscope？

What is Electronic Voltmeter?

What is Differential Voltmeter ？

What is No Load Test of an Induction Motor?

Back-to-Back Test (Sumpner’s Test) on Transformer

SF6 gas detection thermal camera high voltage substation

Lightning impulse voltage withstand test for circuit breakers

What is Fluxmeter？

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