SDM72M

Description

Three Phase 100A Direct Fed Meter

• MID B+D Certified
• Accuracy Class 1 (Active Energy)
• Bi-directional Measurement for kW and kWh (SDM72BI)
• Fixed Pulsed output
• RS485 Modbus option ( SDM72D-M )
• Active Energy and Power Measurement
• Resettable energy counter
• Low cost

The SDM72DR/BI is a entry level three-phase energy monitoring solution with a fixed pulsed
output or RS485 RTU Modbus ( SDM72D-M ) This product will only measure and display
total active energy (kWh) and Power (Watts) with optional partial reset energy (SDM72DR)
Or the Bi-directional version which will read Import/Export and Total Active Energy (kWh)
(SDM72BI).Housed for DIN rail mounting, IP51 protection and direct connection up to
100A. Certified in the UK according to EU Directive 2014/32/EU. MID Certificate number
0120 / SGS0213
Specification tabl

Specification

Nominal voltage(Un) 3×230/400 V ac
Operational voltage 80%~120% of Un

Insulation capabilities
– AC voltage withstand 4KV for 1 minute
– Impulse voltage withstand 6KV-1.2µS

Basic current (Ib) 10A
Maximum rated current (Imax) 100A
Operational current range 0.4% Ib-Imax
Over current withstand 30 Imax for 0.01s

Operational frequency range 50 or 60Hz
Power consumption per phase ≤ 2W/10VA
Pulse output 1000imp/kWh
Display LCD
Max reading 999999.9 kWh

Performance criteria
Operating humidity ≤ 90%
Storage humidity ≤ 95%
Operating temperature -25°C – +55°C
Storage temperature -40°C – +70°C
Reference temperature 23°C± 2°C

International standard IEC 62053-21 / EN50470-1/3

Accuracy class Class1/Class B

Installation category CAT III
Mechanical environment M1
Electromagnetic environment E2
Degree of pollution 2
Protection against penetration of dust and water IP51(indoor)
Insulating encased meter of protective class II

Altitude up to 2000m
Electrostatic discharges 8kV contact / 15kV air gap
Electromagnetic HF fields IEC 61000-4-3
Electrical fast transients 4kV
Surge 4kV
Radiated & conducted emissions EN 55022

Modbus
Bus type RS485(semi-duplex)
Protocol Modbus RTU
Baud rate 1200/2400/4800/9600bps
Address range 1-247
Max. Bus loading 64pcs
Communication distance 1000M
Parity EVEN/ODD/NONE
Data bit 8
Stop bit

Download Datasheet Here