Introduction

DDSD71Single-phase Smart Energy Meter is a highly advanced Smart Meter to measure Single-phase AC active/reactive energy with frequency of 50/60Hz. It has various sophisticated functions to realize Smart Measurement& Management of energy, with features of high accuracy, excellent sensitivity, good reliability, wide measurement range, low consumption, solid structure and nice appearance, etc.

Technical Parameters


Rated Voltage(Un): 110V, 120V, 220V, 230V, 240V
Operation Voltage: 70%Un~120%Un
Nominal Current: 1A, 5A, 10A, 20A
Maximum Current: 60A, 80A, 100A
A wide current range of 1(80) A is optional under special requirements.
Rated Frequency: 50Hz, 60Hz
Power Consumption: Voltage Circuit≤ 1W/10VA
Current Circuit≤ 1VA

Accuracy Class: 1.0, 2.0
Meter Constant(imp/kWh): 800, 1600, 3200, 6400
Normal Operation Temperature: -25~70
Relative Humidity: ≤ 95%

Main Functions


Complying with standards of IEC62052-11& IEC62053-21.
Single-phase Two-wire or Single-phase Three-wire options.
Measuring& storing forward/reverse energy.
Multi-tariff measurement function(optional).
Prepayment function with CPU card(optional).
Calendar& Timing function.
Various anti-tampering functions.
Measuring& displaying voltage, current, power and power factors, etc.
Recording all events including programming, power failure& tampering, etc(optional).
Freezing all data in timed, instant, pre-set, daily& hourly mode, etc. (Programmable).
Auto-scroll displaying and/or manual-scroll displaying(Programmable).
Backup battery for displaying energy under power-off situation.
Internal or external relay to realize load control locally or remotely.
Communication: With ports of RS485, infrared, PLC and/or M-bus, etc.
Communication protocol: DL/T645-2007, IEC62056-21/DLMS, etc(optional).
Capable of being integrated into LINYANGs AMI(Advanced Metering Infrastructure) system.
Reactive energy measurement is optional.
DLMS Certificate available.

Wire Connection Modes



Other connection modes are customizable.