DDSYF 127 single phase multi-tariff prepayment meter is a meter integrated with prepayment function unit and multi-tariff function unit. This meter supports 4 tariff and 12 tariff period. It features high reliability, strong structure and convenient meter reading. It is a new generation of meter which is very practical for commercial application or in some temporary electricity-using places. The meter is equipped with pulse output (optical) and can be read by TTU.

Main function:
*Measure positive and negative active energy for 4 different tariffs.
*Max 4 tariffs, 12 tariff periods.
*Read and program meter via optical port by TTU
*Display parameters of max 14 items in circulation, the order and time interval of display is programmable.
*Record last 12 months' total active energy and active energy in each tariff period.
*Purchase before use
*Automatically store data of energy consumption at preset day.
*Program parameters via IC card
*Large-capacity reading meter data(max 169 meters' consumption data can be read by one special card)
*Cut off power supply when overload
*Set emergency credit and friendly period for customer convenience
*Internal audible & visible alarm, switch-off relay (external alarm output is optional)
*Instantaneous load measurement
*Malfunction self-detection (include load switch, EEPROM, IC card data)
*Large-screen LCD display

Technical data:
Standard: Comply with GB/T17215-2002, GB/T18460-2001, GB/T15284-2002, IEC 62053-21, DL/T645-1997.
Accuracy: Class 1.0, 2.0
Reference voltage: 120V, 220V, 240V
Reference frequency: 50Hz, 60Hz
Current: 2.5(10)A, 5(20)A, 10(40)A, 15(60)A, 20(80)A
Operate voltage range: 0.8Un~1.15Un
Operate temperature range: -25~+55
Circuit power consumption: Voltage circuit power consumption<=3W/12VA, current circuit power consumption <=4VA