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Precision Digital Megger Tester for Transformer Insulation Inspection

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Precision Digital Megger Tester for Transformer Insulation Inspection

MOQ : 1 unit

Measurement : 200mA Max (backlight off)

Delivery Time : 8-10 days

Model Number : XHMR-5000A

Certification : ISO,CE

Place of Origin : Xi'an, Shaanxi, China

Insulation Resistance : ≥50MΩ (between the measurement circuit and the casing)

Payment Terms : T/T

Supply Ability : 2000units/year

Price : Negotiable

Battery Voltage : Low battery voltage is indicated by the symbol

Alarm Function : Issues an alarm alert when the measured value exceeds or falls below the preset threshold

Packaging Details : wooden packaging

Auto Power-off : The instrument automatically powers off after 15 minutes of inactivity

Data Recall : Data recall function

Brand Name : XZH TEST

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1. Introduction

The insulation resistance tester—also known as a megohmmeter, high-voltage insulation resistance tester, etc.—is used for measuring insulation resistance.

2. Voltage Ranges and Accuracy
Measurement Function Measurement Range Accuracy Resolution
DC Voltage DC 0.0V – 1000V ±1.5% rdg ±3 dgt 0.1V
AC Voltage AC 0.0V – 750V ±1.5% rdg ±3 dgt 0.1V

Precision Digital Megger Tester for Transformer Insulation Inspection

3. Technical Specifications
Functions Insulation Resistance Test, Voltage Test, DC Current Test, Capacitance Test
Reference Conditions 23°C ±5°C, <75% RH
Rated Voltage 100V, 250V, 500V, 1000V, 2500V, 5000V
Insulation Resistance Range 0.01 MΩ – 10 TΩ | Resolution: 0.01 MΩ
Rated Voltage 250V, 500V, 1000V, 2500V, 5000V, 10 kV
Insulation Resistance Range 0.01 MΩ – 35 TΩ | Resolution: 0.01 MΩ
Rated Voltage 500V, 1000V, 2500V, 5000V, 10 kV, 15 kV
Insulation Resistance Range 0.01 MΩ – 50 TΩ | Resolution: 0.01 MΩ
Measurement Voltage (V) Rated Voltage × (1 ±10%)
DC Voltage Range 0 – 1000V | Resolution: 0.1V
AC Voltage Range 0 – 750V | Resolution: 0.1V
DC Current 0.1 nA – 6 mA | Resolution: 0.1 nA
Capacitance 10 nF – 50 µF | Resolution: 10 nF
Output Short-Circuit Current ≥6 mA @ 15 kV
Absorption Ratio (DAR) and Polarization Index (PI) Measurement Supported
Power Supply 12.6V Rechargeable Lithium Battery
Backlight Supported Controllable gray-white screen backlight, suitable for use in dimly lit environments.
Display Mode 4-digit extra-large LCD display with gray-white screen backlight.
4. Measurement Principle

Insulation resistance measurement utilizes a voltage generator to generate a voltage (V), which is applied across the resistor under test. By measuring the current (I) flowing through the resistor, the resistance value (R) is calculated using the formula R = V/I.

Precision Digital Megger Tester for Transformer Insulation Inspection

Safety Precautions:
  • In all circumstances, special attention must be paid to safety when using this instrument.
  • This instrument has been designed, manufactured, and tested in accordance with the IEC 61010 safety specifications.
  • During measurements, do not use high-frequency signal generators—such as mobile phones—in the vicinity of the instrument, as this may introduce measurement errors.
  • Pay close attention to the text and symbols displayed on the labels affixed to the instrument's casing.
  • Before use, verify that the instrument and its accessories are in good condition; specifically, ensure that the insulation on the instrument and test leads is intact, with no exposed conductors or broken wires, before proceeding with measurements.
  • During the measurement process, strictly avoid touching exposed conductors or the circuit currently being tested.
  • Ensure that the connection plugs of the test leads are firmly inserted into the corresponding ports on the instrument.
  • Do not perform measurements in flammable environments, as sparks generated during operation could trigger an explosion.
  • If the instrument's casing or test leads become damaged—exposing internal metal components—while the unit is in use, immediately cease operation.
  • Do not leave or store the instrument for extended periods in environments characterized by high temperatures, high humidity, condensation, or direct sunlight.
  • When replacing the instrument's batteries, ensure that the test leads have been disconnected from the unit and that the instrument is powered off.
  • If the instrument displays the "Low Battery Voltage" symbol, recharge the unit immediately; failure to do so may result in measurement inaccuracies.
  • Strictly avoid performing charging or data transmission operations while a measurement is in progress.

    Precision Digital Megger Tester for Transformer Insulation Inspection


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Precision Digital Megger Tester for Transformer Insulation Inspection Images

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