Registry variables – CIRCUTOR QNA500 series User Manual
Page 9
POWER QUALITY ANALYZER QNA500 8IO
QNA500 8IO Instruction manual
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3.3.- REGISTRY VARIABLES
The power quality analyzer can measure:
Register variables
Unit
L1
L2
L3
III
Phase-phase and phase-neutral voltage (average,
maximum, minimum)
V
X
X
X
X
Current (average, maximum, minimum)
A
X
X
X
X
Neutral current (average, maximum, minimum)
A
X
Earth-Leakage current (average, maximum, minimum)
A
X
Neutral-Ground voltage (average, maximum, minimum)
V
X
Frequency (average, maximum, minimum)
Hz
X
X
X
Active power (average, maximum, minimum)
kW
X
X
X
X
Inductive reactive power (average, maximum, minimum)
kvar
X
X
X
X
Capacitive reactive power (average, maximum, minimum)
kvar
X
X
X
X
Apparent power (average, maximum, minimum)
KVAR
X
X
X
X
Maximum demand
kW
X
X
X
Power factor (average, maximum, minimum)
X
X
X
X
Crest factor (voltage and current)
V or A
X
X
X
K Factor
X
X
X
Active energy
kWh
X
X
X
X
Inductive reactive energy
kvarh
X
X
X
X
Capacitive active energy
kvarh
X
X
X
X
Voltage THD (average, maximum, minimum)
%
X
X
X
Current THD (average, maximum, minimum))
%
X
X
X
Voltage harmonics (up to 50th order)
V Harm
X
X
X
Current harmonics (up to 50th order)
A Harm
X
X
X
Voltage interharmonics (up to 50th order)
V Harm
X
X
X
Current interharmonics (up to 50th order)
A Harm
X
X
X
Flicker (PST)
X
X
X
Overvoltage
%
X
X
X
Sags
%
X
X
X
Interruptions
%
X
X
X
Voltage transients
X
X
X
Current transients
X
X
X
Voltage Unbalance (V
d
/V
i
)
X
Voltage Asymmetry (V
h
/V
i
)
X
Current Unbalance (I
d
/I
i
)
X
Current Asymmetry (I
h
/I
i
)
X