ddsf7171型 
电子式单相多费率电能表
type ddsf7171
single phase electronic multi-rate kilowatt-hour meter
ddsf型电子式单相多费率电能表，是根据国家相关标准开发成功的多费率电能表系列产品之一。该产品运用了先进的软件设计手段，采用了高性能的硬件设计和smt生产工艺，技术先进、功能完善、性能可靠，是供电部门进行分时电能计量的理想产品。该产品适用于通过rs485通讯网络或手持单元（hhu）进行点对点或一主多从的数据通讯协议符合dl/t645-1997的规定，物理层接口、通讯链路和计量性能符合dl/t645-1997、gb/t17215-2002。本产品显示方式可选（lcd或led），具有体积小，造型美观、寿命长、准确度高、过载性能好，功耗低、抗干扰性能力强等优点。
ddsf single phase electronic multi-rate kilowatt-hour meter is one product of those multi-rate meter series,which is developed according with national related standards.this meter adopt advanced software design, high-performance hardware design and smt manufacturing technique, so that it is ideal product for electricity board to measure electricity time sharing. though rs485communication network or hand-hold unit, the meter can dopoint to point protocol or one trunk with multi-branch protocol,which all conform to the requirements of dl/t645-1997.besides, physical interface layer, communications link and metering performance are all according to the requirements of dl/t645-1997、gb/t17215-2002. this meter has lcd and led display,which can be selected. it also has many advantages,such as long ser­vice life、high accuracy、good overload、low consume and small volume.
2.规格型号
型号规格
参比电压（v）
额定频率（hz）
标定电流（a）
仪表常数（imp/kw.h）
ddsf7171
220
50
1.5(6)  --- 20(80)
见铭牌标识
2. specifications and types
specifications and types
reference voltage（v）
rated frequency（hz）
rated current
（a）
meter constant（imp/kw.h）
ddsf7171
220
50
1.5(6)  --- 20(80)
as shown in nameplate
3.技术参数
3.1电气要求
精确度等级：1.0级，2.0级
正常工作电压：0.9un~1.1un
极限工作电压：0.7n~1.3un
电压线路功耗：有功功率≤2.0w，视在功率≤5va
电流线路功耗：有功功率≤1.8va
3.2环境要求
正常工作温度：－25℃-+60℃
极限工作温度：－40℃—+70℃
储运运输温度：－45℃—+70℃
相对湿度：小于95%
3.3工作参数
时钟准确度：≤0.5s/d (23℃)
电池电压：3.6v
电池容量：≥1.2ah
电池寿命：＞10年
光耦输出接口：脉冲宽度：80±20ms
设计寿命：10年
符合标准：gb/t17215-2002，dl/t645-1997
3.technical parameter
3.1 electrical required
accuracy rating：class 1.0，class 2.0
normal working voltage：0.9un~1.1un
limiting working voltage：0.7un~1.3un
voltage consumption：active power≤2.0w，apparent power ≤5va
current consumption：active power≤1.8va
3.2 environment requirements
normal working temperature：－25℃-+60℃(three phase)
limiting working voltage：－40℃—+70℃
transportation and storage temperature：－45℃—+70℃
relative humidity (rh): less than 95%
3.3 working parameter
clock accuracy：≤0.5s/d (23℃)
battery voltage：3.6v
battery capacity：≥1.2ah
battery life：＞10 years
optical coupling output interface: pulse width：80±20ms
designed life：10 years
standard: gb/t17215-2002，dl/t645-1997
4.主要功能
4.1计量功能：准确计量正、反向有功电能
4.2分时计量功能
可设置四种费率（尖、峰、平、谷），八个时段，时段最小时间间隔5分钟
可存贮包括本月在内的12个月的各费率电能数据
电量转存（自动抄表日）时间为1~28日的0~23时的整点时间
4.3反向用电量分时计量
功率（电能）方向自动识别，反向电量自动保存并同时累加在正向电量计数器中，自动记录反向电量、反向起始时间和反向运行时间
具有反向脉冲检测和指示功能
4.4通讯功能
具有一个rs485接口和一个红外通讯接口
rs485接口和电表内部实现电气隔离，并设有防雷击电路
调制型双向红外接口
4. main function
4.1 measurement function:can measure positive and reversed direction active energy.
4.2 measured by different time segment
can set up four rates(tine,peak,level,off-peak),eight period of time,the minimal time interval should be 5 minute
can save the rates of 12 months including this month
date of automatic meter reading is at 0~23 on 1~28
4.3 measured by different time segment in reversed direction
power direction can be identify automatically, reversed power can be saved automatically, at the same time it can be accumulated into positive power counter, automatically record reversed power, reversed starting time and reversed runtime
have function of reversed pulse testing and indication
4.4 communications
have one rs485 communications port and one infrared communications port
rs485 communication port and internal meter electrical isolation,it also havelightning protection circuit.
two directions of modulating infrared communications port
4.6其他功能
写数据时采用密码和编码开关两级保护，自动记录最后编程时间和编程次数
采用硬件上的时钟电路，极低的消耗电流
后备电池采用进口绿色环保一次性锂电池
可设置表号、局号、时段、费率、日期、自动抄表、密码、循环显示项及起始电量
具有后备电池欠压检测指示、电表硬件状态、时钟状态、电能方向、校时状态及当前时段状态等电表运行状态标识位
电表运行状态标示位可通过rs485或手持电脑读取
可通过点动表盖上蓝色轮显按钮查看用户选定的电量参数
4.6 other function
adopt two-stage protection of password and code switch, when reading meter automatically recording last time program and programing times
adopt clock circuit of hardware
backup battery adopts imported green environmental disposablelithium battery
can set meter number,office number,period of time,rate,date,password,the content of display in a cycle and starting power.
have function of marking backup battery detecting low voltage indication ,meter state of hardware. state of clock,meter direction.state of check.state of present.

---

乐清市柳市斯瓦迪继电器厂

13780116226
中国 温州