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Single Phase Pre-Payment Electronic Watt-Hour Meter (DDSY238
General:The model DDSY238 single phase prepaid electronic meter, briefly named as single-phase intelligent card watt-hour meter, is used for measuring single-phase AC active energy with rated frequency of 50Hz to realize using electric power after prepayment. The product adopts IC card (named as smart card) and advanced micro-electronic technique to collect, process and memorize data. Its technical performances are complying with the requirements of national standards of GB/T18460.3 and IEC61036. It has strong function of preventing the meter from decoding, compatibility as well as features of small size, weight light and high reliability.Working principle:1. Both-way electric energy metering: provides precise positive-negative active energy metering and one-way accumulating; used for power metering and advance purchase of AC single-phase current rated2. Advance purchase quantity, preset maximum load-limit and IC card password; IC card transfers data and realizes data including total consumption, remaining quantity, accumulated quantity and total purchases) backward reading3. Storage of leave-factory serial number, meter constants, initial data and the user`s name and address4. Alarm and switch off when overload; alarm at low remaining power to remind user of timely purchasingTechnical data:Applicable standard: IEC61036Service lifetime: 10 yearsAccuracy class: class 1, class 2Working voltage range: 0.9~1.15UnPower: loss less than 2W or 10VASpecifications:Rated voltage: 220V, 230VReference frequency: 50HzClass: class 1, class 2Basic current (maximum current) A1.5(6), 5(20), 10(40), 20(80)2.5(10), 5(30), 15(60), 30(100)Or other specified metersOuter dimension: 164 x 110 x 62mm
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