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PowerLogic™ PM5100 series user guide Glossary
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Pwr—Power
Q—Reactive power
Qd—Reactive power demand
RS—Firmware reset system version
S—Apparent power
SN—Power meter serial number
Sd—Apparent power demand
Sec—Secondary
Sub-I—Subinterval
TDD—Total Demand Distortion
THD—Total Harmonic Distortion
U—Voltage line to line
V—Volts
VT—Voltage Transformer (also known as PT–Potential Transformer)
VAR—Volt ampere reactive
Vmax—Maximum voltage
Vmin—Minimum voltage