Measurement - Electrical-Capsule

Permanent Magnet Moving Coil (PMMC) Meter Construction & Its Working

December 29, 2024 by Team

Permanent Magnet Moving Coil (PMMC) PMMC instrument is a highly accurate and reliable device used primarily for measuring DC current and DC voltage. Its design, based on the interaction between a moving coil and a permanent magnet, ensures precise readings with a linear scale. While PMMC instruments are excellent for DC applications, they are not … Read more

Earth Testers, Purpose, Construction, and Working Principles

October 25, 2024 by Team

Earth testers, essential in electrical engineering, measure the resistance between electrical installations and the ground. This measurement ensures that electrical systems have proper earthing, providing a safe path for fault currents and preventing potential hazards. They help confirm that the earth resistance remains low, ensuring fault currents dissipate without endangering people or damaging equipment. What … Read more