4 LEM022SJ 2015 V01
1.3 Performance criteria:
Operating humidity ≤ 75%
Storage humidity ≤ 95%
Specified operating temperature -10°C - +40°C (3K5)
Limit operating temperature -25°C - +55°C (3K6)
Storage temperature -40°C - +70°C (1K5)
International standard IEC 62053-21
Accuracy class Class 1
Protection against penetration
of dust and water IP51
Insulating encased meter of
protective class Ⅱ
1.4 Specifications:
Reference voltage (Un) 230/400V AC (3~)
Operational voltage 161/279 – 300/520V AC (3~)
Insulation capabilities:
- AC voltage withstand 2KV for 1 minute
- Impulse voltage withstand 6KV – 1.2µS waveform
Minimum current (Imin) 0.25 A
Transitional current (Itr) 0.5 A
Reference current (Iref) 5 A
Maximum current (Imax) 80 A
Operational current range 0.25A - 80A
Over current withstand 3000A for 0.01s
Operational frequency range 50Hz ±10%
Internal power consumption ≤2W / 10VA per phase
Test output flash rate (PULSE LED) 400 pulses per kWh (2.5Wh/imp)
Pulse output rate (pins 26 & 27) 400 pulses per kWh (2.5Wh/imp)
Pulse supply current Ui max=27V / Ii max 27mA
Power supply indicator (L1, L2 &
L3 LED) Meter is connected and working OK.
Consumption indicator (PULSE LED) Flashing at load running
Reverse indication (REV. LED) lighten when load current flow is reverse.
Data display mode 7+1 digits for LCD display
Data save The data can be stored more than 20 years
when power cut.
1.5 Intrinsic errors:
With balanced loads
Imin ≤ I < Itr Cosφ = 1 ±1.5%
Itr ≤ I ≤ Imax Cosφ = 1 ±1.0%
Cosφ = 0.5L ±1.0%
Cosφ = 0.8C ±1.0%
With single phase load
Itr ≤ I ≤ Imax Cosφ = 1 ±2.0%
Cosφ = 0.5L ±2.0%
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