mohann2008

 Profile Answers by mohann2008 

• Apr 7th, 2009

 

Unit Power Factor is used to measure the high current, but Low Power Factor is used to measure the low current.

rajakumar1985

 Profile Answers by rajakumar1985 Questions by rajakumar1985

• Aug 24th, 2009

 

The UPF wattmeter is used to measure the power with better power factor. the LPF wattmeter is used to measure the power with lower power factor(<0.5).

sharath

• 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.

Siva

• 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).