Application
DTSY855 series three phase prepayment watt-hour meter is a kind of mechanism-electronic integrative meter which is designed and manufactured on the basis of type DDSY855 single phase prepayment watt-hour meter. The meter has many functions such as electric energy measuring, load control and using electricity management etc. Its technique performance are completely conformed to the stipulated requirement of National Standard GB/T15283-94 Department Standard GB/T18460-2001 and international standard IEC60521. It is used for measuring rated frequency 50Hz three phase AC active energy electric power consumption.

Structure and feature
1. The structure of microcomputer control board and photo-electricity sensor is designed
2. It protects for overload input voltage, overload output IC card with code and data against false etc
3. Voltage range in AC 154-287V is normal
4. The data will preserved forever if power is interrupted.
5. The outline structure dimension and installation and connection way is the same as ordinary meter.