File talk:Single phase four tariff.jpg

This a new type of energy meter which has four tariff Type No.: DDSF-1Y-007B40 Rated voltage: 110V; 220V; 230V; 240V Rated current 5(30) A; 5(60) A; 5(80) A; 10(100) A Rated frequency: 50Hz/60Hz Accuracy class: 0.5; 1.0; 2.0 Start current: 0.4%Ib (1.0class) Potential moving: prevent potential moving design Frequency consumption: ≤1W（220V 20A） Connection Mode: Directly mode Standard: IEC62052-11/IEC62053-21

Function： 1. Forward and reverse energy measurement: accurately measure forward and reverse power 2. With standard RS485 Interface and optics interface. 3. Communication agreement meets IEC62056-21 or DL 645. 4. Eight tariffs、eight period of time. It can record 30 times abnormity events, like power off、case open and so on. Forward energy measurement includes the reverse active energy and can store separately. Also it has anti-tamper and prepaid function as well as display and record load curve. 5. Measurement in wide range and good ability in overload