Total Power Factor (Pf); A-Lags-V Indication; Kwhr (Kilo-Watt-Hour Energy); 3-Phase Unbalanced-Load Power - Brymen BM157 User Manual

Total Power Factor (PF)

RANGE
0.10 ~ 0.99
1) Specified accuracy @ ACA fundamental > 2A ; ACV fundamental > 50V

A-lags-V Indication:

LCD annunciator "A-lags-V" turns on to indicate an inductive circuit, or Current A lags
Voltage V (i.e., phase-shift angleθ is "+").
A-lags-V Indication is specified at 50/60Hz fundamental without the presence of
harmonics, and at ACV > 90V, ACA > 9A and PF < 0.95

kWHr (kilo-Watt-Hour Energy)

Time base accuracy: < 30ppm
Non-volatile memory: Separately stores one 3-Phase-Balanced-Load and one
Single-Phase result

3-Phase Unbalanced-Load Power

This 3-Phase Unbalanced-Load Power measurement is achieved thru the calculation of
discrete single-phase measurements that are taken one at a time manually. Since it is
not real-time on all 3 phases simultaneously, it is intended only for stable power
conditions without significant power fluctuations over the time of measurements. Result
accuracy is hence the accumulated accuracy of the discrete single-phase
measurements plus the associated fluctuations.
Accuracy
F ~ 21st
3d
1)
22nd ~ 51st
5d
22