Single phase two wire/ Single phase three wire

Technical Data
Meter format
Single phase two wire with optional neutral current measurement
Reference voltage
220V/230V/240V
Operating voltage
0.8Un ～1.3Un
Current
5A-80A (Single Phase Two Wire)
Starting current
0.004Ib
Reference frequency
50Hz
Accuracy class
Class 1.0 (Active)
Clock accuracy
±0.5s/day@23℃
Impulse generator energy constant
1000 imp/kWh, 1000 imp/kvarh (Configrable)
Operating temperature range
Normal range:-25℃~ +55 ℃(3k6)
Limited range:-40℃~ +70℃(3k7)
Storage and transport temperature range
-40℃~ +70℃(3K7)
Max. temperature can be up to 85℃(optional)
Relative humidity
≤ 95% (non-condensing)
Ingress protection rating
IP54
Backup Power for Power Interruption
Replaceable lithium battery support RTC and LCD display
Battery life
>5 years(blackout condition)
Communication interface
RF
Display (LCD)
Main character dimensions 3.09 x 6.5 (mm)
Energy display digits 6 + 2
Display mode Scrolling display
Data item OBIS
Meter physical dimensions
145 mmx 60 mm x 95 mm; PC+GF (20%)
Terminal hole diameter
10mm
Weight
Appr. 0.85kg
DA28 General Information
Insulation Test
Insulation & Overvoltage
Insulation system Protective class II
Overvoltage withstand 440 Vac for 4hours (can up to 48h), 600 Vdc for 1 minute
AC voltage test
Insulation level 4KV during 1 min
Impulse voltage test
According to IEC 60060-1 , impulse voltage is 6KV
EMC Test
Electrostatic discharges (contact discharges)
8KV
Electrostatic discharges (air discharges)
15KV
Surge immunity test
6kV
Electrical requirements
Power consumption
Voltage circuit＜2W,10VA Current circuit＜4VA
Magnetic field interference
Constant(DC) magnetic induction atthe rate of 200mT of external origin