4 SEP LEMO12SD / LEM012SS 2015
1.3 Performance criteria:
Operating humidity ≤ 75%
Storage humidity ≤ 95%
Operating temperature -10°C - +50°C
Storage temperature -30°C - +70°C
International standard IEC 62053-21
Accuracy class 1
Protection against penetration
of dust and water IP51
Insulating encased meter of
protective class Ⅱ
1.4 Specifications:
Nominal voltage (Un) 230V AC
Operational voltage 161 - 300V AC
Insulation capabilities:
- AC voltage withstand 2KV for 1 minute
- Impulse voltage withstand 6KV – 1.2µS waveform
Basic current (Ib) 5 A
Maximum rated current (Imax) 32 A
Operational current range 0.25A - 32A
Over current withstand 960A for 0.01s
Operational frequency range 50Hz ±10%
Internal power consumption ≤2W / 10VA
Test output flash rate (Red LED) 2000 pulses per kWh (0.5Wh/imp)
Pulse output rate (pins 20 & 21) 2000 pulses per kWh (0.5Wh/imp)
Pulse supply current Ui max=27V Ii max 27mA
Power supply indicator (Green LED) Meter is connected and working OK
Consumption indicator (Red LED) Flashing at load running
Data display mode 7+1 digits for LCD display
(for the LEM012SS 5 +1digits for mechanical
display 5 integer 1 decimal.
Data save The data can be stored more than 20 years
when power cut.
Wire connection Up to 10mm2 stranded copper wire
1.5 Intrinsic errors:
0.05Ib Cosφ = 1 ±1.5%
0.1Ib Cosφ = 0.5L ±1.5%
Cosφ = 0.8C ±1.5%
0.1Ib - Imax Cosφ = 1 ±1.0%
0.2Ib - Imax Cosφ = 0.5L ±1.0%
Cosφ = 0.8C ±1.0%
1.Ib - Imax Cosφ = 1 ≤ 1%
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