DDSY31: Single-Phase Static Watt-Hour Meter with IC / Card Prepayment (Smart Card with Security Logic)



  • Chinease GB/T 17215-2002 Alternating current static watt-hour meters for active energy (class 1 and 2) equivalent to IEC 1036.
  • Chinease JB/T 8382-1996 Prepayment electrical meter.

DDSY31 2


DDSY31 2 table



  • Prepayment: Users are able to consume electric power only if fees are prepaid.
  • Overload protection: the meter would give alarm to warning user to reduce load when overloaded.
  • Alarm: the meter will issue a warning signal displaying remaining money in order to make user aware that new charge should be given in good time.
  • Bi-directional measurement: Measurement can still be performed accuratly even if input and output wires of the meter are connected reversely.
  • IC card port detection: Various protection treatments apply to the port to keep from penetration of dust and water and from spiteful attacks.
  • Pulse output port: Meter is equipped with impulse output port for calibration.