janitza UMG 103-CBM, User Manual And Technical Data

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www.janitza.com UMG 103-CBM
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Supply voltage
The device obtains the supply voltage from the measured voltage.
Supply from 1st phase 115 - 277 V (+-10%), 50/60 Hz
Supply from 3 phases 80 - 277 V (+-10%), 50/60 Hz
Power consumption max. 1.5 VA
Voltage measurement
3-phase 4-wire systems with nominal voltages (L-N/L-L) max. 277 V/480 V
Networks Measurement in TT and TN networks
Rated surge voltage 4 kV
Protection of the voltage measurement 1 - 10 A tripping characteristic B, (with IEC/UL approval)
Overvoltage category 300 V CAT III
Resolution 0.01 V
Crest factor 2 (relative to 240 Vrms)
Sampling frequency 5.4 kHz
Frequency of the fundamental oscillation
- Resolution 45 Hz .. 65 Hz
0.001 Hz
Fourier analysis 1st-40th harmonic
Serial interface (RS485)
Protocol, Modbus RTU Modbus RTU/Slave
Transmission rate 9.6 kbps, 19.2 kbps, 38.4 kbps, 57.6 kbps, 115.2 kbps,
Factory setting: automatic detection
Current measurement
Nominal current 5 A
Rated current 6 A
Crest factor 2 (relative to 6 Arms)
Resolution 0.1 mA
Measuring range 0.005 .. 6 Arms
Overvoltage category 300 V CAT II
Rated surge voltage 2 kV
Power consumption approx. 0.2 VA (Ri = 5 mΩ)
Overload for 1 s 60 A (sinusoidal)
Sampling frequency 5.4 kHz/phase