PMU331 Intelligent Bus Comprehensive Detection Device

Parameters

Working voltage

24VDC±20%

Maximum working voltage 36V DC

Power consumption

<2W

Voltage detection

Three phase AC voltage

1.2 times overload

Current detection

Three phase AC current

1.2 times overload

Switching value detection

3-way passive input

Temperature detection

0-8 channel digital temperature sampling

Communication protocols

RS-485 communication, Modbus RTU

Electric energy pulse

LED output

Precision index

AC Voltage

40 ~ 400V AC

±0.2%FS

AC current

0 ~ 50A /100A (Multiple specifications)

±0.5%FS

power

-

1S

electric energy

-

2S

temperature

-10°C~+85°C

±0.5°C

-55°C～+125°C

±2.0°C

Electrical characteristics

Measure voltage

40~400VAC

1.2 times overload

No damage under 500V AC/1min

Power consumption per line<0.2VA

Measure current

0 ~ 50A /100A (Multiple specifications)

Specifications

Power consumption per line<0.1VA

Power frequency withstand voltage

2kV/1minute

insulation resistance

>40M

EMC

Surge immunity

Voltage measurement input port: differential mode 6kV-2 Ω

IEC 61000-4-5,Level 3

Power port: differential mode 2kV-2 Ω

RS-485 port: differential mode 2kV-12 Ω

Electrostatic anti-interference

Contact discharge 8kV, air discharge 15kV

IEC 61000-4-2,Level 4

RE

Low frequency (less than 1GHz)

CISPE 22  CLASS B

Fast group pulse

Voltage detection port

IEC 61000-4-4,Level 4

Operating environment

Working temperature

-10℃ ～ +65℃

Storage temperature

-25℃ ～ +70℃

Relative humidity

5% ～ 95%RH，No condensation

interface

Interface Type

description

1:Voltage measure input interface

4PIN,Spacing 7.62mm Phoenix terminal male seat

3:Working power supply and communication interface

4PIN,Spacing 3.5mm Phoenix terminal male seat

4:DI inerface

4PIN,Spacing 3.5mm Phoenix terminal male seat

5:Current transformer and temperature interface

8PIN,Spacing 3.5mm Phoenix terminal male seat