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Intrinsic Uncertainty ±(% of measurement value + % of power range)
Influence
Parameter
Quantity
PF ≥0.99
Active Power P
Active Energy E
a
0.1≤PF <0.99
Apparent Power S
0 ≤ PF ≤1
Apparent Energy E
ap
Reactive Power Q
0 ≤ PF ≤1
Reactive Energy E
r
Power Factor PF
Displacement
-
Power Factor
DPF/cosφ
Additional uncertainty
V
P-N
(% of power high-range)
[1]
Only for calibration laboratories
Reference Conditions:
Environmental: 23 °C ±5 °C, instrument operating for at least 30 minutes, no external electrical/magnetic field, RH <65 %
Input conditions: CosΦ/PF=1, Sinusoidal signal f=50/60 Hz, power supply 120 V/230 V ±10 %.
Current and power specifications: Input voltage 1ph: 120 V/230 V or 3ph wye/delta: 230 V/400 V
Input current >10 % of current range
Primary conductor of clamps or Rogowski coil in center position
Temperature Coefficient: Add 0.1 x specified accuracy for each degree C above 28 °C or below 18 °C
[1]
Direct Input
Clamp: 50 mV/500 mV
Rogowski: 15 mV/150 mV
0.5 % + 0.005 %
see Formula 1
0.5 % + 0.005 %
>250 V
0.015 %
iFlex1500-12
iFlex3000-24
150 A / 1500 A
300 A / 3000 A
1.2 % + 0.005 %
1.2 % + 0.0075 %
see Formula 2
see Formula 3
1.2 % + 0.005 %
1.2 % + 0.0075 %
2.5 % of measured apparent power/energy
Reading ±0.025
0.015 %
0.0225 %
Power Logger
Electrical Specifications
iFlex6000-36
i40S-EL
600 A / 6000 A
4 A / 40 A
1.7 % + 0.0075 %
1.2 % + 0.005 %
see Formula 4
see Formula 5
1.2 % + 0.0075 %
1.2 % + 0.005 %
0.0225 %
0.015 %
71
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