Measurements
· Single-phase and three-phase 3 or 4-wire unbalanced load   operation
· Keyboard programmable CT and VT ratios
· True RMS metering
· More than 35 measured electrical parameters
· Fully bi-directional, four-quadrant readings on request

Front panel display
· High contrast LCD display
· Set-up and resetting operations protected by password

Communication
· Optional RS485 optoisolated communication port
· Modbus or Standard protocol
· Communication speed programmable up to 57,600 bp

Outputs & Inputs
· Two digital optoisolated outputs for energy pulsing

Advanced diagnostic functions
· Detection of over/undervoltage, overcurrent, and frequency   out of range, that indicates the incorrect working   conditions
· Checking of pulse emission, frequency or CT too high, that   indicates programming mistakes