Specification
CI-3K50601 Project 2191 DMR2731 Rev.1 18-08-11
21
5 Specification
5.1 Measured
Parameters
The unit can monitor and display the following parameters of a single phase, 3-phase 3-wire or 3-
phase 4-wire supply.
5.1.1 Voltage and Frequency
Phase to neutral voltages 100 to 289V a.c. (not for 3p3w supplies)
Voltages between phases 173 to 500V a.c. (3p supplies only)
Frequency in Hz
Percentage total voltage harmonic distortion (THD%) for each phase to N (not for 3p3w
supplies)
Percentage voltage THD% between phases (three phase supplies only)
5.1.2 Current
Current on each phase – 1 to 9999A range, set by external current transformer(s) (CTs)
Neutral current (calculated) (three phase supplies only)
Maximum demand currents on each phase, since the last Demand reset
Maximum neutral demand current, since the last Demand reset (three phase supplies only)
Current THD% for each phase
5.1.3 Power and Power Factor
Instantaneous power:
Power 0 to 3600 MW
Reactive Power 0 to 3600 MVAr
Volt-amps 0 to 3600 MVA
Maximum demanded power since last Demand reset
Power factor
5.1.4 Energy Measurements
Imported energy 0 to 9999999.9 Wh, kWh or MWh
Exported energy 0 to 9999999.9 Wh, kWh or MWh
Imported reactive energy 0 to 9999999.9 VArh, kVArh or MVArh
Exported reactive energy 0 to 9999999.9 VAhr, kVArh or MVArh
5.2 Measured
Inputs
Voltage inputs through 4-way fixed connector with 2·5mm
2
stranded wire capacity. 3-Phase 3- and
4-wire and Single-phase 2-wire unbalanced. Line frequency measured from L1 voltage or L3
voltage.
Three current inputs (six physical terminals) with 2·5mm
2
stranded wire capacity for connection of
external CTs. Nominal rated input current 5A a.c. rms.
