DDS3666 series sigle-phase electronic type watt-hour meter adopts the advanced SMT process and solid state intergrate circuit technology of ultra-low power consumption, it is used to measure the active electric energy of single-phase AC 50Hz, all technical indexes are in conformity with GB/T17215.321-2008 Electric metering equipment(a.c)- Particular requirement -Part21:Static meters for active energy(classes 1 and 2) and DL/T 6451997 Multi-function watt-hour meter communication protocol on single-phase static watt-hour meter


  • Class 1 accuracy
  • Designed and manufactured in   state of art ISO 9001 : 2008
  • Robustly designed with quality components to provide accurate data over the years.
  • Highly stable. Almost no drift over time.
  • Rapid line voltage or load fluctuations do not affect accuracy
  • Energy registration error less than 1% over a wide Input voltage range of 165V to 275V
  • Advanced Anti Tamper capabilities
  • Neutral missing design
  • Variety of downloading options available like – Optical, IRDA, Hardwired RS – 232
  • 6 digit/Register or LCD Display with optical backlight

Postpaid Meter Specification

Specification Value
Type 1-phase 2-wire(3-wire optional)
Standard IEC62053-21 GB/T17215-2008
Accuracy Class 1.0
Rated Voltage(V) 230V 240V
Rate Current(A) 5(20)A 15(60)A 30(90)A
Operating Voltage 0.7Un ~ 1.3Un
Starting Current 0.4%(class 1.0) rate current
Rate Frequency 50Hz or 60Hz
Power Consumption Voltage Circuit ≤1W 5VA;Current Circuit ≤0.5 VA
Running with no-load It uses logic design to anti-running
Temperature Range Normal operation temperature: -30ºC–+70ºCExtreme operation temperature: -40ºC–+75ºCStorage Temperature: -40ºC–+70ºC
Reklative Humidity ≤90%


Basic Error

Load current Power Factor Class 1.0
0.05Ib 1.0 ±1.5
0.1Ib-Imax 1.0 ±1.0
0.1Ib 0.5L,0.8C ±1.5
0.2Ib-Imax 0.5L,0.8C ±1.0

Note : Ib is rated current,Imax is rated max. current