| 概述 Application（） |
| DDSF345型单相电子式复费率电能表是用于测量单相中额定电压220V频率为50Hz的交流有功电能，具有划分时段计量，分时计费，自动运算功能的智能计量仪表，用户可对不同时段的复费率进行用电选择。复费率产品的诞生，将了“峰时”用电，节省了电费，也使电能源得到均衡利用。 本产品可配备掌上电脑(抄表器)利用远红外进行编程，抄表校时，实现非接触式的数递，并与微机连接实行自动化管理。
DDSF345 te single——phase electronic multi——rate watt——hour meter is used to measure AC active electric energy of rated voltage 220V and frequency 50Hz of single—phase power network，it is a kind of intelligent measuring meter that can measure by means of divided—period，count the cost by time—sharing and calculate automatically．Users can make a decision of power utilization according to the multirate in the different periods．The bi rth of multi—rate products enhances electricity using at peak time，it not only saves the electricity cost，but also balances the electric energy using．After being equipped with a palm computer(meter reading system)，it can make use offar infrared to program，during meter reading and timing，it can realize nontouch te data tranission and automatic control by connecting with micro—computer |
| 主要特点 Strncture（） |
◎显示及记录当月和上月峰、谷、平等多种费率的用电量和总用电量。
◎Display and record multi—rate power consumption like peak．valley,even and total power consumption this month and last month. ◎Display present rate period ◎Preset total electric quantity，date，time，constant of watt—hour meter,date of meter reading and parameter of period ◎Set 8 time—interval．it can supply any optional multi—rate for power department . ◎Record E3ROM data that is reserved when power is off in meter,when power is off the data keeps in meter,we make sure the internal memory information can be used for 1 0 years . ◎Posses multi—mode of encrtion，functions of electricity thieving—proof，anti—interference，anti—attaching. ◎Applicable voltage range：1 70V-260V ◎Height of measuring accuracy and width of l oad：lMAX=81b |
| 规格及主要技术参数 Main Technical Parameter（） |
