DRT-301M User Manual
Shanghai Fengyilong Electronic Co,. Ltd.
www.china-meters.com
Email:[email protected]
021-60975591/ 60975592
International standard
IEC 62053-21
Accuracy class
Voltage, LN & LL (Phase1,2,3)
±1%
Amps (Phase 1,2,3) ±0.5%
PF (Phase 1,2,3 &
Σ
) ±0.5%
Active power (Phase 1,2,3&
Σ
) ±1%
Reactive power (Phase 1,2,3&
Σ
) ±1%
Apparent power (Phase 1,2,3&
Σ
) ±1%
Frequency
±
0.5%
Active energy& Demand (
Σ
)
±
1%
Protection against penetration
of dust and water IP51
Insulating encased meter of
protective class
Ⅱ
1.4 Meter specifications:
Meter type DRT-301M (LCD display)
Nominal 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
Basic current (Ib):
CT type 1.5A
Directly connect 10A
Maximum rated current (Imax)
CT type 6A
Directly connect 100A
Operational current range
0.4% Ib- Imax
Over current withstand
30Imax for 0.01s
Operational frequency range
50Hz ±10%
Internal power consumption
≤2W / 10VA per phase
Test output flash rate (PULSE LED)
CT type 3200imp/kWh
Directly connect 400imp/kWh
Test pulse output rate (pins 8 & 9)
CT type 3200imp/kWh
Directly connect 400imp/kWh
Consumption indicator (PULSE &
SO LED)
Flashing at load running
Communication indicator Flashing at communication running
Alarm indicator
Data communication port RS485 and far infrared
Data save The data can be stored more than 25 years
when power off
1.5 RS485 communication specifications:
Bus type RS485
protocol MODBUS RTU with 16 bit CRC & DL/T645
