UPF and LPF Wattmeters

How is UPF Wattmeter different from LPF Wattmeter?

Questions by maheedhara

Showing Answers 1 - 4 of 4 Answers


  • Oct 28th, 2011

LPF watt meter is used for measuring power in highly inductive circuits & UPF watt meter is used for measure power in resistance circuit in which the power factor ranges from 0.5 to unity.


  • Apr 20th, 2017

LPF Watt meters are specially designed to measure the power at low power factor (inductive circuits).

UPF type Watt meters are not so accurate in measuring power at low factor (resistive circuits).

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