AC Power Meter
Overview
MultiPower M850 is a low cost 96x96mm cased three phase power meter. It measures line Voltages and Currents, Neutral Current, System Frequency, System W, A and VA Demands, System W, A and VA Maximum Demands, System Active Power, System Reactive Power, System Apparent Power, System Active Energy, System Reactive Energy and System Power Factor.
Product detail
M850 Introduction
MultiPower M850 is a low cost 96x96mm cased three phase power meter.
It measures line Voltages and Currents, Neutral Current, System Frequency, System W, A and VA Demands, System W, A and VA Maximum Demands, System Active Power, System Reactive Power, System Apparent Power, System Active Energy, System Reactive Energy and System Power Factor.
The LCD version has a universal power supply. It features the options of pulsed outputs, an RS485 port using Modicon’s Modbus protocol and Modbus MSTP over an ethernet network.
M850 specification
Input (accuracy range)
Un 28V to 330V L-N (48V to 570V L-L)
Burden < 0.5VA
In (5A specified) 0.5A to 6A via CT
In (1A specified) 0.1A to 1.2A via CT
Burden < 0.5VA
Frequency 45Hz to 65Hz
Secondary of CTs must be connected to earth
Input (working range)
Voltage and Current 1.7% – 100%
Overload
800V L-L indefinitely, In x 10 for 1 sec
Accuracy (8.4% – 100% of range)
Voltage 0.5% +/- 2 digits
Current 0.5% +/- 2 digits
Power (W,VAr,VA) 1.0% +/- 2 digits
Power Factor 1% of range
Frequency 0.1 Hz
Energy IEC 1036 Class 1
Auxiliary Voltage
100V to 440V ac (45Hz to 65Hz)
100V to 420V dc
Burden: < 10VA
Display
Digits (LED/LCD) 3 lines 9999
Digit size 14.2mm 7 segment
Energy (LCD) 1 line 99999999
Digit size 6mm 7 segment
Update time 1 second
Insulation
Installation Category III (480V ph/ph)
Degree of Pollution 2
Rated Impulse Voltage IEC 60947-1-V imp 4kV
Meter Front Class II
Electrical Security IEC 61010-1
Electromagnetic Compatibility
Immunity:
ESD IEC 61000-4-2-Level III
Radiated IEC 61000-4-3-Level III
Fast Transient IEC 61000-4-4-Level III
Impulse Waves IEC 61000-4-5-Level III
Conducted IEC 61000-4-6-Level III
Voltage Dips/Short Interruptions IEC 61000-4-11-Level II
Emissions:
Conducted and Radiated CISPR11-Class A
Environment
Working Temperature (LCD) -20 to 70 deg C
Storage Temperature -30 to 80 deg C
Relative Humidity 0-95% non condensing
Shock 30G in 2 planes
Enclosure
Standard DIN case 96 x 96 x 60mm
Panel mounting 4 retaining clips
Cutout 92.8mm x 92.8mm
IP Rating – Front IP52 / Nema
IP Rating – Case IP30 / Nema
Options
Plug-in RS485 module (Modbus)
Plug-in relay module (W.h VAr.h)
19V-69V d.c. Auxiliary