DRT-370D user manual
Shanghai Fengyilong Electronic Co. Ltd.
www.china-meters.com
-4-
Email:[email protected]
m
021-60975591/ 60975592
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)
230/400V AC (3~)
Operational voltage
161/279 – 300/520V AC (3~)
Insulation capabilities:
- AC voltage withstand
4KV for 1 minute
- Impulse voltage withstand
6KV – 1.2µS waveform
Starting current (Ist)
0.04A
Transitional current(Itr)
1.0A
Minimum current
0.5A
Reference current (Iref)
10A
Maximum current (Imax)
100A
The current measuring range
0.5-10(100)A
Peak current withstand
3000A for 0.01s
Operational frequency range
50Hz ±10%
Internal power consumption
≤
2W / 10VAper phase
Test output flash rate (PULSE LED)
400imp/kWh
pulse output rate
400imp/kWh
1.5 Basic errors:
With balanced
loads
Cos
φ
= 1
±1.5
0.1Ib
Cos
φ
= 0.5L
±1.5
Cos
φ
= 0.8C
±1.5
0.1Ib - Imax
Cos
φ
= 1
±1.0
0.2Ib - Imax
Cos
φ
= 0.5L
±1.0
Cos
φ
= 0.8C
±1.0
%
With single phase load
0.1Ib - Imax
Cos
φ
= 1
±2.0
0.2Ib - Imax
Cos
φ
= 0.5L
±2.0
%
