Overview of MPQ1000
MPQ1000-UG-EN Rev 6 April 2020
11
Current Unbalance:
Power:
Instantaneous Power (W) = V sample * I sample
Active Power (P) = V* I * cos
θ
Reactive Power (VAR) = V* I * sin
θ
Apparent Power (S) (VA) = S = VI
DPF = cos
θ
Power Factor = Pf = TPF = P/S
Energy
KWH = KW / Number of Demand Intervals in an Hour
KVARH = KVAR / Number of Demand Intervals in an Hour
KVAH = KVA / Number of Demand Intervals in an Hour
THD Measurement -
Where:
Q
represents wither current or voltage
Q
1
is the r.m.s. value of the fundamental component
h
is the harmonic order
Q
h
is the r.m.s. value of the harmonic component of order
h
H
is 50 for the purpose of the compatibility levels in this standard
NOTE:
THD takes account of harmonics only.
Mains Signaling Voltage:
Performed per IEC 61000-3-8
IEC Flicker:
Performed per IEC 61000-4-15
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