The HOBUT M850 series electromechanical digital power meter allows measuring voltage with measuring range between 28V and 570V. The meter features a 96x96mm moulded case and the choice of three selectable colour backlight LCD screens. The power meter is easy to use and features user-programmable CT and 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.
Programmable Functions:
Selectable screen colour
Current transformer ratio
Voltage transformer ratio
Bd rate, parity, stop
AC or DC AUX
Single or 3 phase system
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

4 front buttons for programming
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
Large LCD display
Optional RS485 port allows communication via Modbus RTV or BACNET (MSTP) protocol
Meter accuracy is 0.1 (Frequency) %, 0.5 (Volts/Amps) %, 1 (Active Power) %, 1 (Apparent Power) %, 1 (Power Factor) %

Building management systems
Gensets
Low, medium and high-voltage control panels
Power management

ANSI/ESD S20.20:2014
BS EN 61340-5-1:2007
CE certified