| BRAND | Contrel Elettronica |
| Product | EMA-90N |
| Internal code | 4854610 |
| Technical specification | Power quality meter type EMA-90N with the following main features: - three-phase power meter , panel mounting DIN 96x96mm, graphic color LCD display, resolution 320-240 dots - auxiliary supply 80÷260Vac/dc - measurement TRMS wit accuracy 0,2% on voltage and current - voltage inputs 20÷700V phase to phase, 30÷500Hz, programmable voltage transformer ratio - insulated current inputs from external current sensors 1/5A, (other signals available) - measuring of voltage, current, power factor and cosF, active, reactive and apparent powers, frequency, harmonic distortion, temperature, optional parameters - management of single phase and three-phase parameters - management of relative and absolute minimum, maximum and average values (max demand ,fixed and sliding windows) - bidirectional energy counters, class 1 per EN62053-21 - energy counter available max 4 timebands (tariff) with historical values (day, month, year, etc.) - harmonic analysis of voltage and current up to 63° order in 50-60Hz network - internal real time clock and calendar, hour counter - display of memory ,inputs and outputs status - display of graphic pages, historical values, histograms, trends, phasor, etc. - serial port RS 485 for connection to PC, PLC , etc., max 1152000 bps, max response time 20ms - two digital outputs configurable, pulses outputs, alarms, load controls - internal memory 128kb (expansion available) for data storage, historical values (about 400000 samples) - thermoplastic enclosure self-extinguishing, plug screw terminals with screw block - internal firmware upgradable through serial port - protocol communication MODBUS-RTU and ASCII with complete list of registers - screw terminals on backside panel - software tools for instrument management and firmware upgrade |
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