Skip Navigation LinksHome -> Products -> Rogowski -> M850 Meter  

M850-LRC specification

Input (accuracy range)
Un 28V to 330V L-N (48V to 570V L-L)
Burden < 0.5VA
In: 10-500A 20-1000A 40-2000A 80-4000A
Frequency 45Hz to 65Hz
Secondary of CTs must be connected to earth

Input (working range)
Voltage and Current 1.7% - 100%

800V L-L indefinitely, Current depending on range

Auxiliary Voltage
100V to 440V ac (45Hz to 65Hz)
100V to 420V dc
Burden: < 10VA

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

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
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
Conducted and Radiated CISPR11-Class A

Working Temperature (LED) -10 to 60 deg C
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

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