User Manual

80 GMC-I Messtechnik GmbH
Technical Data
Intrinsic Uncertainty and Frequency Influence for Power and Energy
Measurement
1
Not applicable in mV range
Display range
– Current and voltage: 6000 digits
– Apparent, reactive and active power: 36,000 digits
– Power factor: 100 digits
Intrinsic error: stable sinusoidal voltage, stable sinusoidal current, mean
voltage value: max. 10% amplitude. U > 9% of the upper range limit is
usually the case during normal operation due to auto-ranging, except in
the smallest range.
Bandwidth up to 1 kHz; signal components of higher frequency are clip-
ped by input filters.
Note:
Power is measured with a separate measurement circuit: As a result,
specified accuracies for voltage and current measurement do not
correspond with the specified values for the respective measuring
functions. Principally, DC voltage linearity is only assured with voltages
of ≥ 0.15 V or ≥ 10% of the upper range limit.
Additional deviation for U, I during power measurement
with higher crest factor, f = 0 … 65 Hz:
CF = 2: -0.3% rdg., CF = 3: -0.9% rdg.,
CF = 4: -1.5% rdg., CF = 5: -2.5% rdg.
Square-cycle signal 10 to 65 Hz to U or I:
additional intrinsic uncertainty of +0% / -0.7% rdg.
Mains Monitoring / Mains Disturbance Recording
* Absolute value of the transients is limited to approximately 1000 V by
input protection.
Internal clock
Time format DD.MM.YYYY hh:mm:ss
Resolution 0.1 s
Accuracy ±1 min./month
Temp. influence 50 ppm/K
Reference Conditions
Ambient temperature +23 °C ±2K
Relative humidity 40 ... 75%
(no condensation allowed)
Meas. quantity frequency 45 ... 65 Hz
Meas. quantity waveform Sine
Battery voltage 1.8 V ... 3.2 V
Measured
Quantity
Measuring
Range
Intrinsic Uncertainty ±(... % rdg + ... d)
DC 10 Hz ... 65 Hz 65 Hz ... 1 kHz
Voltage,
auxiliary display
U ≥ 0.1 x Umax
and U ≥ 0.15 V
0.5 + 10 0.3 + 10 0.4 + 10
1
Current,
auxiliary display
I ≥ 0.01 x Imax 0.2 + 5 0.1 + 5 0.9 + 10
Power factor 1 d 1 d + 1 d
1
Apparent power 1.0 + 20 0.4 + 20 1.3 + 20
1
Active power
|PF| ≥ 0.4
|PF| < 0.4
1.0 + 20
—
0.4 + 20
1.0 + 20
1.5 + 20
1
3.0 + 20
1
Reactive power |PF| ≤ 0.8 — 1.0 + 20 3.0 + 20
1
Type of
Disturbance
Measuring Range Resolution
(display)
Intrinsic Uncertainty under
Reference Conditions with
Fixed Frequency of 50/60 Hz
Pulse Time
Over/
undervoltage
6 ... 600 V 60,000
digits
Dip/swell 6 ... 600 V 6000 digits ±(1% rdg. + 1% MR) ≥ 1 half-cycle
Peak 6 ... 600 V 6000 digits ±(1% rdg. + 2% MR) ≥ 1 ms
Transient 200 ... 1000 V * 10 V ± 50 V 0.5 ... 5 μs