UNI-T UT677A Operating Manual
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UNI-T UT677A Operating Manual

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UT677A
BATTERY RESISTANCE TESTER
P/N:110401111108X
2022/04/13 REV.0

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Summary of Contents for UNI-T UT677A

  • Page 1 UT677A BATTERY RESISTANCE TESTER P/N:110401111108X 2022/04/13 REV.0...

  • Page 2: Table Of Contents

    CONTENT CONTENT ................................ - 1 - I. Safety rules and precautions ........................- 2 - II． Introduction ............................... - 2 - III. Range and accuracy ..........................- 3 - 3.1 Resistance measurement accuracy ....................- 3 - 3.2 Voltage measurement accuracy ......................- 3 - 3.3 Temperature measurement accuracy ....................

  • Page 3: Safety Rules And Precautions

    I. Safety rules and precautions Thank you for purchasing our company's universal rechargeable battery internal resistance tester. In order to better use this product, please be sure to: ——Read this user manual in detail. ——Strictly follow the safety rules and precautions listed in this manual. ...

  • Page 4: Range And Accuracy

    and data access. III. Range and accuracy Accuracy guarantee period: 1 year Accuracy guarantee period after calibration: 1 year Accuracy guarantee Accuracy guaranteed temperature and humidity range: 23℃±5℃, below conditions 80%RH Warm-up time: not required Add test accuracy 0.1/℃ within the operating temperature range (except Temperature characteristics 18℃~28℃)
  • Page 5 Accuracy guaranteed 23℃±5℃, Below 75%rh temperature and humidity DC 3.7V lithium battery Power supply 1 u Ω Resistance resolution 1 mV Voltage resolution Temperature 0.1℃ resolution Internal resistance measurement: 0.000mΩ~3.100 Ω (4 ranges configuration） Voltage measurement: 0.000V~±71.00V (consisting of 2 Measuring range ranges) Temperature measurement: -10.0℃~60.0℃...

  • Page 6: Structure

    Working temperature and -10℃~40℃; below 80%RH humidity Storage temperature and -20℃~60℃; below 70%RH humidity Insulation Above 20MΩ (500V between circuit and case) resistance AC 3700V/RMS (between circuit and case) Withstand voltage External magnetic <40A/m field External electric <1V/m field IEC 61010 Standard V．Structure 1.

  • Page 7: Measuring Principle

    If a single memory is full of 500 groups and continues to measure, the screen will display "FULL" and no more data will FULL be stored. Indicates that the current measurement result is judged as FAIL failed. Indicates that the current measurement result is judged as a WARNING.

  • Page 8: Operation Method

    constant, but NTC changes its resistance with temperature changes, and the actual temperature value is obtained by measuring the partial pressure voltage and bringing it into the NTC temperature conversion formula. VIII. Operation Method Power on /off and automatic shutdown ●...
  • Page 9 The alarm setting interface can set the buzzer prompt mode when the test is completed. Select the alarm function Save and return Return 3） Storage settings The storage setting interface can be set to maintain, storage mode, memory selection, there are a total of ABCDEFGHIJ ten storage options, if the current memory is full of 500 sets of data, the memory is full (FULL symbol) when storing data, you need to manually set other memory or Only after deleting the current memory data can the new measurement data be stored.

  • Page 10: Measurement Procedure

    8.4 Measurement procedure Internal resistance measurement: 1) Connect the test line to the meter, and connect the indication mark (small arrow) of the test line and the indication mark (small arrow) on the machine according to the corresponding color. 2) Set the instrument parameters, refer to 8.3.1 and 8.3.2. 3) If you use a test line other than the standard configuration, short-circuit the four-wire clamp of the test line, and then press the key to adjust the zero calibration.

  • Page 11: Communication With Pc

    records, which can visually analyze the internal resistance of the batch of batteries. You can use to move the reading cursor left and right. The item selected by the cursor can read the specific information of battery internal resistance, voltage, temperature and test time. You can also use the to scroll through pages.

  • Page 12: Repair, Inspection And Cleaning

    2) Charging is about 5 hours from electric charge. Whether the battery is fully charged depends on the charging indicator. The red light means charging, and the green light means it is fully charged. 3) When the battery is fully charged, it can be used continuously for 4 to 8 hours, and the screen brightness and different load power consumption are also different;...

  • Page 13: Packing List

    What capacity (Ah) battery internal This meter uses AC signals for measurement, and DC resistance and voltage can be current does not flow into the meter. Therefore, there is no measured? restriction on the capacity (Ah) of the battery under test. X.

  • Page 14: Appendix 2 Extending The Test Lead And The Influence Of Induced Voltage

    Appendix 2 Extending the test lead and the influence of induced voltage The quality and structure of the test cable have a certain impact on the measurement results. If you need to extend the test cable, please use the test cable recommended by our company. How to reduce induced voltage Since this meter uses AC to measure small resistance, it is susceptible to the influence of induced voltage.

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