SDM120M MID Approved Multifunction RS485 Modbus RTU Single Phase Energy Meter

Electrical characteristics

Type of measurement

RMS including harmonics on three phase AC system (1P+N)

Measurement accuracy

Power

IEC 61557-12 Class 0.5 

Active Energy

IEC 62053-21 Class 1.0

Reactive Energy

IEC62053-23 Class 2, IEC 61557-12 Class 2

Frequency

±0.1%

Current

±0.2%

Voltage

±0.2%

Power Factor

±0.01

Input & Output

Input-Current

Rated Current

5A

5 (6) A ( CT type )

Max Current

45A

9999A ( CT type )

Min Current

0.25A

0.25A ( CT type )

Starting Current

20mA

20mA ( CT type )

Output

SDM120A/D/DB

Pulse Output for active energy

SDM120P/CTP

2 Pulse Output for imp/exp. energy

SDM120M/CTM

2 Pulse Output + RS485 Modbus

SDM120MB/CTMB

2 Pulse Output + M-bus EN13757

Mechanical Characteristics

Weight

100g

IP Degree of Protection

(IEC 60529)

IP51 front display

Dimensions (WxHxD)

119x17.5x62

Mounting Position

Vertical

Material of meter case

Self-extinguishing UL 94 V-0

Mechanical environment

M1

Environmental Characteristics

Operating Temperature

-25 to 55°C

Storage Temperature

-40 to  70°C

Humidity Rating

<95% RH at 50 °C (non-condensing)

Pollution Degree

2

Altitude

2000m

Safety

Measurement Category

Per IEC61010-1

CAT II

Current Inputs

Require external Current Transformer for Insulation

Over voltage Category

CAT II

Dielectric Withstand

As per IEC 61010-1 Double Insulated front panel display

Protective Class

II

Modbus Communications

Interface standard and protocol

RS485 and MODBUS RTU

Communication address

1~247

Transmission mode

Half duplex

Data type

Floating point

Transmission distance

1000m Maximum

Transmission speed

2400bps~38400bps

Parity

None (default), Odd, Even

Stop bits

1 or 2

Response time

<100 mS