janitza UMG 512-Pro, User Manual And Technical Data

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103
UMG 512-PRO
15.2 Voltage and current measurement
Current measurement
Nominal current 5 A
Resolution 0.1 mA
Measuring range 0.005 .. 7 Arms
Overrange (overload) from 8.5 Arms
Crest factor 1.41
Overvoltage category Option 230 V: 300 V CAT III
Option 24 V: 300 V CAT II
Rated surge voltage 4 kV
Power consumption approx. 0.2 VA (Ri=5 mOhms)
Overload for 1 s 120 A (sinusoidal)
Sampling frequency 25.6 kHz / phase
Voltage measurement
The voltage measurement inputs are suitable for measurement in the following power supply sys-
tems:
Three-phase 4-conductor systems with
rated voltages up to
417 V / 720 V (+10%)
347 V / 600 V (UL listed)
Three-phase 3-conductor systems with
rated voltages up to
600 V (+10%)
The voltage measurement inputs are designed as follows from the point of view of safety and reliabil-
ity:
Overvoltage category
600 V CAT III
Rated surge voltage 6 kV
Protection of the voltage measurement 1-10 A
Measuring range L-N 0
1)
.. 600 Vrms
Measuring range L-L 0
1)
.. 1000 Vrms
Resolution 0.01 V
Crest factor 1.6 (referred to 600 Vrms)
Impedance 4 MOhms/phase
Power consumption approx. 0.1 VA
Sampling frequency 25.6 kHz / phase
Transients 39 µs
Udin
2)
according to EN61000-4-30 100 .. 250 V
Flicker range (dU/U) 27.5%
Frequency of the fundamental oscillation
·Resolution
15 Hz .. 440 Hz
0.001 Hz
1) The device can only determine measured values if a voltage L-N greater than 10 Vrms or a voltage L-L greater than 18 Vrms is present on at least one voltage measure-
ment input.
2) Udin = Agreed input voltage according to DIN EN 61000-4-30
Measuring accuracy, phase angle 0.075 °