Description
Advantages of Electrodynamic Type Power Factor Meters
(1) Losses are less because of minimum use of iron parts and also give less error over a small range of frequency as compared to moving iron type instruments.
(2) They high torque is to weight ratio.
Disadvantages of Electrodynamic Type Power Factor Meters
(1) Working forces are small as compared to moving iron type instruments.
(2) Scale is not extended over 360°.
(3) Calibration of electrodynamometer type instruments are highly affected by the changing the supply voltage frequency.
(4) They are quite costly as compared to other instruments.
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