Single Phase Prepaid Energy Meter

Single Phase Prepaid Energy Meter

◎ IC Card Prepayment ◎ Balance Alarm ◎ Multiple Data Encryption

Product Details

DDSY666 Single Phase Prepayment Meter

IC card prepayment energy meter / single phase smart card meter


DDSY666 single phase prepayment meter is used in one phase two wire power network for residential user. It is realizing prepaid energy fee, energy metering and protecting over load power consuming.


◆ Active energy metering

◆ Buy energy first then use. The load will automatic switch off when the bought energy used up.

◆ One card one password, the data is Safe and reliable.

◆ With functions of information transmission, through the user card the measurement data in meter can be data back to the working state and sell electricity system, for the use of settlement, statistics, management.

◆ With error operation and fault indication functions.

◆ Using LCD display, can display the current total active energy used, remain energy, the latest purchasing energy

◆ Easy to replace the Battery, without uninstalling.

◆ LCD backlight can increase readability under low light condition.



Compliance with IEC60252-11 IEC62053-21

Connection type: 1P2W

Accuracy: Class 1.0 for active



Nominal voltage (Un): 110V, 120V, 220V, 230V, 240V

Operating range: 0.7Un ~ 1.2Un

Power consumption: 1.5W, 5VA





50Hz or 60Hz, ±5%

LCD Display  

6 characters of 7 segment display

Digital size: 4.2mm × 9.2mm

With backlight

Auto scroll and scroll with push button

Reverse power

Measured Values

Active energy

Cumulative and credit energy


Internal relay

One relay / 90A

Relay will disconnected when meter overload



Optical (IR) port

RS485 port


Alarm for not enough balance

Relay disconnected alarm for overload


One card one password

 Multiple data encryption


Operating range limit: -40°C to +75°C

Storage range limit: -40°C to +85°C

Relative humidity: 95%RH

Ingress protection: IP54

Dimensions and weight

Dimensions: 142mm × 108mm × 60mm

Weight: 0.6 kg (Approx.)

◆ DDSY666 Wiring diagram:


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