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M850-LTHN Power Meter The M850-LTHN is a digital Power Meter that features a 96 x 96 mm moulded case and the choice of three selectable colour backlight LCD screens. The power meter is easy to use and features user-programmable CT & VT ratios. The Unit is configured for 3 Phase/ 4 Wire out of the Box. It also is programmed for other input voltages/ Single Phase. Large LCD display 3 Selectable colour options (blue, green or white) 4 front buttons for programming Optional RS485 port allows communication via Modbus RTV or BACNET (MSTP) protocol A relay output can be assigned to either W.h or Var.h Installation guide supplied or download available of complete installation manual and RS485 Modbus register at www.hobut.co.uk/power-meters Programmable Functions: Selectable screen colour Current transformer ratio Voltage transformer ratio Bd rate, parity, stops AC or DC AUX Single or 3 phase system Input voltage range 28-570 V RS485 address, 1-247 Security code access for programming Standard Functions: Phase Voltage (V) Phase to Neutral Voltage (V) Phase Current (I) Frequency (Hz) Active Power (W) Active Energy (kWh) Reactive Power (VAr) Apparent Power (VA) Reactive Energy (VArh) Power Factor (PF) Instantaneous Amp Demand, Instantaneous Watt Demand, Instantaneous VA Demand, Maximum Amp Demand, Maximum Watt Demand, Maximum VA Demand, Neutral Current Measurement Applications: Low, medium & high-voltage control panels Gensets Building management systems Power management
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