Digital Electrical Meter. User Manual

Transcription

1 Digital Electrical Meter User Manual

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3 1 Structure characteristics and working principle Modular structure design, optional auxiliary function.mcu sampling the input signal, Data processing for sampling results,the meter will display According to the keyboard programmed voltage and current ratio. 2 Technical performance and parameters Sheet 1 Technical performance and parameters Technical parameter Measurement network Index 单相 Nominal input AC Voltage AC Current AC 100V 220V 380V 500V AC 1A 5A Input charac terist ics Linear range Voltage Current Frequency Power Factor 10%~120% Nominal input value 1%~120% Nominal input value 45Hz~65Hz 0.1(Delay)~1.0~0.1(Leading) Continue:1.2 times, Allowable Overload Instantaneity:Voltage 2times/5s, Current10times/5s Output charac terist ic Other charac terist Accuracy grade Data update Display mode Auxiliary power supply power consumption Display HHHH when exceed the rated value Voltage, current, active power, power factor 0.5 grade,frequency 0.1 grade Reactive power 1 grade 3 times/second 4 bit digital tube LED display, automatic decimal point shift AC220V 50Hz <5VA

4 ics electroma Electrostatic discharge immunity 4 Grade(GB/T ) gnetic Electrical Fast compatibi Transient Burst 2 Grade(GB/T ) lity Burst Immunity Surge immunity 4 Grade (GB/T ) Insulation strength Input and auxiliary power supply AC2.5kV,1min Security features insulation resistance >100MΩ Heat resistance and flame retardant Terminal:960 Case:650 actuation duration:30s Temperature Operation:-25~55,Storage:-25~50 environme nt Humidity 93%RH,Non-Dewfall,Non corrosive gas Altitude 2500m Installation method Embedded 3 Installation Embedded installation mode, according to the appearance and installation dimensions of the instrument, the installation screen is provided with a hole, and the instrument is embedded into the installation hole, and the clamping piece is clamped into the instrument corresponding to the clamping groove. 3.1 Connection Should check the connection wiring is correct,before use the meter. If the manual

5 wiring diagram and instrument case on the wiring diagram is different, please refer to the wiring diagram on the instrument case Input signal connection A N 单相 CT A B C N 三相四线 CT A B C 三相三线 CT 单相改成 SINGLE PHASE 中文改成 3-PHASE 4-WIRE 中文改成 3-PHASE 3-WIRE 1 2 L N 辅助电源中文改成 POWER SUPPLY 3.3 Connection Note Meter need to be applied to the auxiliary power supply (specifications see instrument signs) to work properly, please ensure that the power provided by the series of instruments, in order to prevent damage to the instrument The input voltage should not higher than the rated voltage, or should be considered the use of voltage transformer, voltage transformer should be one end of the grounding, in order to maintain convenience, the proposed use of wire. The voltage input is recommended to install the 1A fuse The input current should not higher than the rated current, or should consider the use of current transformer, current transformer secondary should one end of the grounding, in order to maintain convenient, it is recommended to use the wiring The meter have three type connection type. three-phase three line, three-phase

6 four wire and single-phase wiring, field wiring mode must be with the instrument settings of wiring in a manner consistent with, and to ensure that the input voltage and current phase sequence and wiring diagram is consistent, otherwise data of measurement is incorrect 3.4 Interface and operation instructions Interface instructions The meter have five LED display,the The first three rows is use to display the current,the forth row is to display Current L1,L2,L3 is the phase voltage.when two light is working it means line voltage, L1+L2 both light it means the first phase, L2+L3 means the second phase,l1+l3 means the third phase,the meter will update every 5 seconds,the fifth row is to display the frequency operation instructions Data record display:push will display the max of the value and the H light will working,push 2 times of the will display the minimum value. Notice:The maximum minimum value cant record,it only display the period when the meter is powered.if it outage then meter will clear not record Programming parameter description is use to move the cursor, is use to increase the value push the same time can reduce the value

7 Push SET,you will need to input the password,the initial password for the product is 0.then push SET,we will into the,it will have 6 code as the sheet below. Each code have function,we can use to switch the code,the SET is to enter the code And save the setting,and is use to back to the previous menu. Para mete r Parameter code Parameter name Setting range description type Set the input circuit voltage ratio. When the voltage is through the Voltage ratio 1~4999 mutual transformer, Pt = Primary circuit rated voltage/two circuit rated voltage; If voltage input directly,pt=1 Set the input current ratio When the voltage is through the Syst em Current ratio 1~9999 current transformer,ct = Primary circuit rated current/two circuit rated current; If current input directly,ct=1 Setting the input network: Input network 0~2 0:Three-phase four wire, 1:Three-phase three wire, 2:Single-phase Switch display time 0~20(s) Parameter display, When the setting time is longer than 4S, the display parameters start to show

8 Password 0~9999 Setting system password Clear the max and min value 0~1 0:no, 1:yes Abnormal display instructions HHHH: The measured value is out of range.the voltage or current input exceeds 1.2 times of rated value of the instrument ----hyphens:input disconnection indication, ----Upper cross bar:the measured value is beyond the display range of the meter Attention 5.5.1Please confirm the meter power supply, whether the input signal is in the range, the terminal connection is correct and solid.before using the power supply Meter need to preheat 15min to accurately measure 5.5.3Instruments should not be hit, collision and violent vibration, the use of the environment should meet the technical requirements 6 Maintenance Instrument should be verification at least one time each year, if the meter deviation exceeds the range, usually it cause by damp, dust or corrosive gases, we can dry and clear to recovery the accuracy.if it not works need send back to the factory to repair. The meter have guarantee for 12 months, user should follow the instructions.if found

9 quality problems, the manufacturers will give free repair or replacement. 7.1 Packing Packaging should be environmental protection materials, packaging requirements should be consistent with the provisions of GB/T 7.2 Transportation and storage The transport and storage of shall conform to the provisions of JB/T. Storage temperature of the environment is -25 degrees Celsius to 50 degrees Celsius, the relative humidity of not more than 85%, and the harmful substances contained in the air is not enough to cause the corrosion of the instrument.