Major tech MT330 Instruction Manual
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Major tech MT330 Instruction Manual

Digital earth resistance tester
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INSTRUCTION MANUAL
MT330
DIGITAL EARTH RESISTANCE
TESTER

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  • Page 1 INSTRUCTION MANUAL MT330 DIGITAL EARTH RESISTANCE TESTER...

  • Page 3: Table Of Contents

    Contents Page no 1. Introduction..................4 2. Safety Information................4 3. Safety Symbols..................4 4. Features...................5 5. Electrical Specifications..............5 5.1. Earth Resistance..............5 5.2. Earth Voltage................6 5.3. OHMS..................6 5.4. DC Voltage................6 5.5. AC Voltage (40Hz~400Hz)............6 6. Parts & Controls................6 7. Button Function Operation..............7 7.1. Hold Function................7 7.2.

  • Page 4: Introduction

    1. INTRODUCTION Electronic Digital Earth Resistance Tester is direct replacement of the conventional hand generator type tester. It is designed for measurement of the resistance of earthing used in the electrical equipment as well as for measurement of soil resistance. It can be used for measurements of the other low regular and liquid resistances.

  • Page 5: Features

    4. FEATURES Range Function Earth resistance range 20Ω, 200Ω, 2000Ω Display Large LCD with dual display Multimeter function Range 200kΩ, 750VAC, 1000VDC. Sampling Rate 2.5 times per second. Zero Adjustment Automatic adjustment. Over Range Indicator Number 1 of highest digit is displayed. Low Battery Indication The is displayed when the battery Voltage drop below the operating voltage.

  • Page 6: Earth Voltage

    5.2. EARTH VOLTAGE Range Resolution Accuracy 200V 0.1V ±(3%+3d) 5.3. OHMS Range Resolution Accuracy Overload Protection 200kΩ 0.1kΩ ±(1%+2d) 250V RMS 5.4. DC VOLTAGE Range Resolution Accuracy Input Overload Impedance Protection 1000V ±(0.8%+3d) 10MΩ 1000V RMS 5.5. AC VOLTAGE (40Hz~400Hz) Range Resolution Accuracy...

  • Page 7: Button Function Operation

    7. BUTTON FUNCTION OPERATION 7.1. HOLD FUNCTION The hold function freezes the reading in the display. Press the HOLD key momentarily to activate or to exit the hold function 7.2. BACKLIGHT Press the key for to turn on the display backlight function. The backlight will automatically turn off after 15 seconds.

  • Page 8: Simplified Earth Resistance Measurement Method

    9. SIMPLIFIED EARTH RESISTANCE MEASUREMENT METHOD 1. This method is recommended where an earth resistance higher than 10Ω is measured or where it is not possible to drive auxiliary earth spikes. An approximate value of earth resistance can be obtained by the two wire system where is shown in Fig.

  • Page 9: 0Kω Resistance Measurements

    11. 200kΩ RESISTANCE MEASUREMENTS 1. Set the function switch to the highest 200kΩ position. 2. Insert the black test lead banana plug into the negative COM jack 3. Insert the red test lead banana plug into the positive + jack. 4.
  • Page 12 MAJOR TECH (PTY) LTD South Africa Australia www.major-tech.com www.majortech.com.au sales@major-tech.com info@majortech.com.au...

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