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DRT-370D user manual
1.3
Performance criteria:
Operating humidity
Storage humidity
Operating temperature
Storage temperature
International standard
Accuracy class
Protection against penetration
of dust and water
Insulating encased meter of
protective class
≤ 75%
≤ 95%
-10°C - +50°C
-30°C - +70°C
IEC 62053-21
1
IP51
II
1.4 Specifications:
Nominal voltage (Un)
Operational voltage
Insulation capabilities:
- AC voltage withstand
- Impulse voltage withstand
Starting current (Ist)
Transitional current(Itr)
Minimum current
Reference current (Iref)
Maximum current (Imax)
The current measuring range
Peak current withstand
Operational frequency range
Internal power consumption
Test output flash rate (PULSE LED)
pulse output rate
230/400V AC (3~)
161/279 – 300/520V AC (3~)
4KV for 1 minute
6KV – 1.2µS waveform
0.04A
1.0A
0.5A
10A
100A
0.5-10(100)A
3000A for 0.01s
50Hz ±10%
≤2W / 10VAper phase
400imp/kWh
400imp/kWh
1.5 Basic errors:
With balanced
loads
0.1Ib
0.1Ib - Imax
0.2Ib - Imax
Cosφ
Cosφ
Cosφ
Cosφ
Cosφ
Cosφ
=
=
=
=
=
=
1
0.5L
0.8C
1
0.5L
0.8C
±1.5
±1.5
±1.5
±1.0
±1.0
±1.0
%
Cosφ = 1
Cosφ = 0.5L
±2.0
±2.0
%
With single phase load
0.1Ib - Imax
0.2Ib - Imax
Shanghai Fengyilong Electronic Co. Ltd.
www.china-meters.com
-4-
Email:[email protected]
021-60975591/ 60975592