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Nalder Lipman Moving-iron Power Factor Meter

Nalder Lipman Moving iron Power Factor Meter, Construction, Working


Nalder Lipman Moving-iron Power Factor Meter

Nalder Lipman Moving-iron Power Factor Meters are more efficient in working as compared to electrodynamic power factor meters. These power factor meters are used on a three-phase supply. Its construction and working are very simple. So, the construction and working of this power factor meter are written below:


 Its moving system holds three iron elements. These three elements carry iron cylinders. These elements are mounted on a shaft and these are separated from one another with non-magnetic distance pieces. The shaft carries the damping vanes and a pointer. These three elements are at 120 degrees to each other. Each iron element is magnetized with its individual voltage coils named B1, B2 and B3. These are connected in a star connection with the supply lines. The two parallel F1 and F2 of a single current coil is connected on a line of supply.


The whole system is free to move between the two parallel halves. These meters read the power factor directly from the supply. The phase angle φ is produced in a moving system. The deflection Θ is equal to phase angle and the pointer deflects on a scale.


This instrument is not affected by the variations in voltage and in waveforms in the power supply.

A rotating magnetic field is not produced so the moving system deflects properly.

Aanchal Gupta

Welcome to my website! I'm Aanchal Gupta, an expert in Electrical Technology, and I'm excited to share my knowledge and insights with you. With a strong educational background and practical experience, I aim to provide valuable information and solutions related to the field of electrical engineering. I hold a Bachelor of Engineering (BE) degree in Electrical Engineering, which has equipped me with a solid foundation in the principles and applications of electrical technology. Throughout my academic journey, I focused on developing a deep understanding of various electrical systems, circuits, and power distribution networks.

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