DSS79/DTS79系列电子式三相三线/四线有功电能表采用专用大规模集成电路,SMT制造工艺，性能优越，安全可靠。根据用户需要，产品可提供正反累加计量、分相计量、止逆、缺相指示、分相有功反向指示等扩展功能。
　　该系列产品具有良好的抗电磁干扰，使用寿命长，准确度及可靠性高，负载宽，功耗低，体积小，重量轻，便于安装、管理自动化、功能扩展方便等特点。其性能符合国家标准GB/T17215-2002《1级和2级静止式交流有功电能表》。产品可选配红外和 RS485接口，适用于远程抄表，通信符合DL/T 645-1997《多功能电能表通信规约》. 生产本产品的质量管理体系通过了GB/T 19001(ISO9001)。
　　　结 构：
　　　■ 电表采用加强型密封，表壳阻燃、抗老化。
　　　■ 黄色、绿色、红色三只LED灯指示A、B、C失压，1只红色LED灯指示电量脉冲。
　　　■ 一路光耦隔离脉冲输出，输出宽度约为80ms，供校验使用。
　　　■ 可选配红外或RS485接口。
　　　■ 电量显示可采用计度器或LCD液晶或LED数码管方式。
　　　技术参数：
　　　■ 额定电压(V)：三相三线：3×100; 三相四线：3×220/380 3×230/400
　　　■ 工作电压范围：70%Un～120%Un
　　　■ 额定电流(A)： 三相三线：3×1.5(6)；
三相四线：3×1.5(6), 3×5(20), 3×5(30), 3×5(40)，3×10(40), 3×10(60) , 3×10(80), 3×15(60) ,3×15(90), 3×20(80), 3×30(100) 　■ 额定频率(Hz)：50，60
　■ 准确度等级：1级，2级
　■ 功耗：电压回路（每相）≤2W，10VA；电流回路（每相）≤1VA
　■ 工作温度(℃)：-25～+55，极限工作温度(℃)：-45～+70
　■ 相对湿度：≤75%（年平均）
　　■ 平均使用寿命（年）：＞10
　功 能：
　■ 单向或双向有功电能计量。
　■ 具有脉冲输出，接入RS-485通信接口，可以实现远程自动抄表。
　■ 具有防窃电功能。
适用范围：
■ 3×100V 3×1.5(6)A为经互感器接入式仪表，适用于频率为50Hz（60Hz）的三相三线 制高压供电高压计量的大工业用户有功电量计费用表。
■ 3×220/380V 3×1.5(6)A 为经互感器接入式仪表，适用于频率为50Hz（60Hz）的三相 三线制高压供电低压计量的大工业用户有功电量计费用表及三相四线制低压供电的工业、 非工业用户有功电量计费用表。
■ 3×220/380V 3×5(20)---- 3×30(100)A 为直接接入式仪表，适用于频率为50Hz（60Hz） 的三相四线制低压供电的工业、非工业用户有功电量计费用表。也适用于用电量大采用三相 四线 制低压供电的居民照明计费用表。
DSS79 Static 3-phase 3-wire Energy Meter for AC Active Energy
DTS79 Static 3-phase 4-wire Energy Meter for AC Active Energy
Main Features
■ Adopting special large-scale integrated circuit and manufactured with advanced SMT process
■ Long life, excellent & reliable function, high precision, wide load range
■ Low self-consumption, small volume, light weight
■ Easy installation, automatic management, extended function
■ RS 485 and infrared interface can be added for remote reading
■ Good resistance to electromagnetic interference
■ As per user, following function can be added:
Accumulative measurement of positive and negative energy; Separate phase measurement; Indication for anti-reverse, absent phase and negative separate phase of active energy
■ All specification meeting standard GB/T17215-2002 on" Alternating current static watt-hour meters for active energy (classes 1 and 2)", DL/T645- 1997 on" Multi-function watt-hour meter communication protocol"
■ Passed JQAC certificate according to GB/T19001(ISO9001) Structure
■ Specially sealed case of flame-retardant、rust-proof and anti-aging
■ The yellow、green、red LED indicating A、B、C lost voltage and another red LED indicating energy pulse.
■ One channel of optical pulse output for calibration with width of about 80ms
■ RS 485 and infrared interface can be added
■ Displaying energy by means of counter、LED or LCD
Technical Parameters
■ Rated Voltage(V) : 3-phase 3-wire: 3×100; 3-phase 4-wire: 3×220/380 3×230/400
■ Operation Voltage (v) 70%Un~120%Un
■ Rated Current(A) : 3-phase 3-wire: 3×1.5(6);
3-phase 4-wire: 3×1.5(6), 3×5(20), 3×5(30), 3×5(40)，3×10(40), 3×10(60) ，3×10(80), 3×15(60) ,3×15(90), 3×20(80), 3×30(100)
■ Rated Frequency(Hz): 50，60
■ Accuracy: class1, class2
■ Power Consumption: voltage circuit:≤2W/10VA / phase　current circuit: ≤1VA / phase
■ Ambient Temperature(℃): -25~+55，Limits of temperature(℃): -45~+70
■ Relative Humidity: ≤75% (annual average)
■ Life(year):＞15
Function
■ Measuring active energy unidirectional or bi-directional
■ Having pulse output and to realize AMR with RS-485 interface added
■ Excellent anti-tamper & fraud function
Scope of Use
■ 3×100V 3×1.5(6)A is for transformer operated meters suitable for big industrial unit using 50Hz(60Hz) of 3-phase 3-wire electric power which is high-voltage supplied and high-voltage measured
■ 3×220V/380V 3×1.5(6)A is for transformer operated meters suitable for big industrial unit using 50Hz(60Hz) of 3-phase 3-wire electric power which is high-voltage supplied while low-voltage charged or suitable for industrial & non-industrial unit using 50Hz(60Hz) of 3-phase 4-wire electric power which is low-voltage supplied
■3×220V/380V 3×5(20)A----3×30(100)A is for direct connected meter suitable forindustrial & non-industrial unit using 50Hz(60Hz) of 3-phase 4-wire electric power which is low- voltage supplied or suitable for large-energy- consuming residential energy measurement using 3-phase 4-wire electric power which is low- voltage supplied