DDSY72 single-phase electronic prepaid energy meter

• GB/T 18460-2001 "IC Card Prepaid Electricity Sales System"

• GB/T 17215-2002 "Level 1 and Level 2 Static AC Active Energy Meters"

• The voltage sampling circuit adopts resistance voltage division method.

• The RS485 communication interface is powered by an independent power supply and has anti-static and surge protection circuits.

• Adopting patented technology (patent number: ZL2012200509249) and low-power magnetic holding relay.

• Using standard IC cards as the medium for power transmission, with one meter and one card, the data is encrypted and has good security.

• Electricity usage data can be copied back to the IC card.
  

• Standard reference voltage (V): 220

• Standard current (A): 1.5, 2.5, 5, 10, 15, 20, 30

• Maximum current (A): not greater than 100 and not greater than 10 times the standard current

• Standard reference frequency (Hz): 50

Merit: Level 1, Level 2

• Optional infrared, RS485, or carrier communication methods.

• Optional real-time clock, historical data, and event recording functions.

• Optional functions such as alarm, credit, overload detection, etc.

• IC cards can be selected as either logical encryption cards or CPU cards.

• Various extension protocols are available for selection.