Mastech MS2301 User Manual
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Mastech MS2301 User Manual

Earth resistance clamp
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MS2301
EARTH RESISTANCE CLAMP
USERS MANUAL

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Summary of Contents for Mastech MS2301

  • Page 1 MS2301 EARTH RESISTANCE CLAMP USERS MANUAL...

  • Page 2: Table Of Contents

    CONTENTS CONTENTS WARNING .............1 ALARM OPERATION ........11 ..........1 MAINTENANCE MEMORY FUNCTION ........12 ...........2 INTRODUCTION SPECIAL FUNCTION ........13 FRATURES ...........2 SPECIFICATION ..........15 SUMMARY OF FUNCTION ......3 FEATURES ..........15 LAYOUT ............3 ACCESSORY ..........16 LCD DISPLAY ..........4 CHANGING THE BATTERIES ......16 OPERATION CHARGE THE BATTERIES ......17 ON/OFF OPERATION .......6...

  • Page 4: Summary Of Function

    Summary of function La yout 1 . C l a mp j a w FUNCTION BUTTON 2. Tri gger ON/OFF/EXIT SET MODE 3. MEM Button A MEASUREMENT/ B utto n ▲A A LARM VALUE INCREASE/ RECORD NUMBER SELECT (ON/OFF BUTTON) 5.

  • Page 5: Operation

    12. High Alarm symbol 13. Low Alarm symbol 14. Alarm mode symbol 15. Low voltage indication symbol 16. Auto Power Off symbol 17. Record number symbol 18. Read memory mode symbol 19. save in memory mode symbol 20. 4 digit LCD digital display Operation 1.ON/OFF Operation button switches ON/OFF.

  • Page 6: Earth Resistance Measurement

    2.Earth resistance measurement 1. After switching on, the instrument is automatism in measurement current mode, you can press the▼Ω button to configure for resistance measurement mode. 2. Hook the clamp jaw around earth leads or electrode to be tested. 3. If symbol “ - - - ” and symbol are shown on the display, it indicates that the clamp is closed incompletely.
  • Page 7 • Buzzer ON • A interfered current is in the loop resistance, the • Buzzer ON current measured resistance is 55.2Ω, the value • A loop earth resistance of 19.6Ω is not guaranteed • The earth resistance value is less than the high •...

  • Page 8: Current Measurement

    4. Hold button Press the HOLD button to lock display of the current measure state and last measurement on measurement mode. 5. Alarm operation 1. On resistance measurement, press the AL button, “AL” symbol and the value of the alarm threshold are displayed. 2.

  • Page 9: Memory Function

    6. Memory function To switch off the instrument press the button for 2 seconds. Symbol 1. Clear memory When the battery service life is less than 20%,the symbol Press the HOLD+MEM for 3 seconds, then the “CLR” is continual displayed, the clamp can not save the measured symbol is shown on the display.

  • Page 11: Charge The Batteries

    1. Switch off Application field 2. Unscrew the screw on the battery cover EARTH RESISTANCE CLAMP is designed for testing earth 3. Remove the cover resistance of any loop system, for example no only earth 4. Take the battery box out of the instrument resistance of electric power transportation conductors and 5.
  • Page 12 1. Testing earth resistance of electric power 2. Electric power maintain of the factory Usually the factory is divide into several different earth 1.) Testing Earth Resistance Of Distribution network fields, so you can test earth resistance in this way: Circuitry Usually most electrodes of neutral wire are connected in parallel for three-phase, four-wire system.
  • Page 13 4. Application of faraday-cage protect system Using FARADAY-CAGE to avoid instruments and equipment be static interfered, so it is very important that we can control earth resistance. If the user want to test earth resistance value of each electrode, it is no necessary set supplementary electrode and the user can test referring the follow diagram.
  • Page 14 7. Application of gas station For gas station it is necessary that testing earth resistance to prevent static electricity. Apply earth electrode of oil trough to be supplementary electrode to test earth resistance of gas station. That the tested result is maybe sum for earth resistance of gas station and earth resistance of oil trough in series is noticeable.

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