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15.3. ELECTRICAL CHARACTERISTICS
15.3.1. VOLTAGE INPUT CHARACTERISTICS
Range for use:
0 V
0 V
(on condition of compliance with 1000 V
Input impedance:
1195 kΩ (between phase and neutral and between neutral and earth).
Admissible overload: 1200 V
2000 V
15.3.2. CURRENT INPUT CHARACTERISTICS
Operating range:
[0 V; 1 V]
Input impedance:
1 MΩ.
Admissible overload: 1.7 V
Flex
type current sensors (AmpFlex
®
Rogowski channel) capable of interpreting the signals from Rogowski sensors. The input impedance is reduced to 12.4 kΩ in this
case.
15.3.3. BANDWIDTH
Measurement channels: 256 points per period, i.e.:
■ 50 Hz: 6.4 kHz (256 × 50 ÷ 2).
■ 60 Hz: 7.68 kHz (256 × 60 ÷ 2).
Analogue 3-dB bandwidth: 76 kHz.
15.3.4. INSTRUMENT SPECIFICATIONS (EXCLUDING CURRENT SENSOR)
Quantities concerning currents and voltages
Measurement
Frequency
(7)
simple
RMS
voltage
(5)
compound
simple
Direct
voltage
(DC)
(6)
compound
simple
RMS ½
voltage
compound
simple
Peak
voltage
compound
Severity of short-term flicker (PST)
Severity of long-term flicker (PLT)
Peak factor (PF) (voltage and
current)
to 1000 V
AC+DC phase-to-neutral and neutral-to-earth.
RMS
RMS
to 2000 V
AC+DC phase-to-phase.
RMS
RMS
constant.
RMS
for one second.
RMS
constant.
RMS
and MiniFlex
) switch the current input to an integrator assembly (amplified or unamplified
®
®
Measurement range without ratio
(with unity ratio)
Minimum
40 Hz
2 V
2 V
2 V
2 V
2 V
2 V
2 V
2 V
0
0
1
with respect to earth in Cat III).
RMS
Display resolution
(with unity ratio)
Maximum
70 Hz
V < 1000 V
1000 V
(1)
V ≥ 1000 V
U < 1000 V
2000 V
(2)
U ≥ 1000 V
V < 1000 V
1200 V
(3)
V ≥ 1000 V
U < 1000 V
2400 V
(3)
U ≥ 1000 V
V < 1000 V
1000 V
(1)
V ≥ 1000 V
U < 1000 V
2000 V
(2)
U ≥ 1000 V
V < 1000 V
1414 V
(4)
V ≥ 1000 V
U < 1000 V
2828 V
(4)
U ≥ 1000 V
12
12
9.99
86
Maximum intrinsic
error
10 mHz
±10 mHz
100 mV
±(0.5% + 200 mV)
1 V
±(0.5% + 1 V)
100 mV
±(0.5% + 200 mV)
1 V
±(0.5% + 1 V)
100 mV
±(1% + 500 mV)
1 V
±(1% + 1 V)
100 mV
±(1% + 500 mV)
1 V
±(1% + 1 V)
100 mV
±(0.8% + 1 V)
1 V
100 mV
±(0.8% + 1 V)
1 V
100 mV
±(3% + 2 V)
1 V
100 mV
±(3% + 2 V)
1 V
0.01
See corresponding table
0.01
Uncertainty of PST
±(1% + 5 ct)
0.01
±(5% + 2 ct)
CF < 4
CF ≥ 4
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