Single phase IC card prepayment electric meter

DDSY194 Static Single phase prepayment electric meter is a type of static single phase prepayment electric meter which adopts a specialized measurement chip and high performance CPU to process data, display and control relay. The meter is high stable and reliable because of self-protective function of IC card circuit, advanced hardware and software fault tolerance, reliable IC card dynamic encryption, particular power detection circuit and high anti interference. It is a mature production with high accuracy, high stability, high overload, low power and light weight. Main functions and features: . Wide range, high accuracy, long life, calibration free, maintenance free . Prepaid by IC card, build in a large magnetic latching relay to control switch. . Magnetic latching relay capacity is up to 20A. . Acrostic-optical alarm function. Two grades alarm for payment. Alarm mode and limit value can be programmed. . Power switching due to overload or over current limit. The limit can be programmed. . The sensitivity is high, and the starting current is one time smaller than national standard. . High reliable of IC card communication, data doesn't lose no metter how fast you plug in or out card. . Power switch due to over voltage to protect user load. The limit can be programmed. . Rich display information . Date backup to ensure data safe and reliable . Data can be retained over 10 years without power supply . Data analysis using read back data through IC card . One card every house Main parameters: . Standard:IEC62053-21:2003, GB18460.3-2001(Prepaid Watt-hour Meter) . Accuracy Class: class 1 . Rated voltage:220V . Current specification:5(20)A,10(40)A,15(60)A,20(80)A . Reference frequency50Hz/60Hz . Operation voltage:0.7Un-1.2Un . Limited operation voltage:0.7-1.3Un . Operation temperature:-25-- +55 . Limited operation temperature:-40-- +70 . Life:>20 years . Dimension:166x115x66mm(length x width x heigth)