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  • Insulation resistance tester (Megohmmeter) | 0.01 MΩ–10 TΩ | 100–5000 V | LCD display | AC/DC voltage, current and capacitance measurement

    Code: ES-JSJY912

    Insulation resistance tester (megohmmeter), designed for checking the insulation condition of electrical equipment, cables, transformers, motors and other components of electrical installations. The device generates a test voltage of up to 5000 V, allowing precise determination of insulation quality even in complex industrial systems. This tester features a wide measurement range up to 10 TΩ, high stability and reliability, making it suitable both for professional diagnostic work and preventive maintenance of electrical equipment. Thanks to its versatile functions, the device can measure not only insulation resistance but also AC/DC voltage, current and capacitance, making it a universal tool for electrical engineering specialists. 

  • Technical specifications

    Measurement range: 0.01 MΩ – 10 TΩ
    Accuracy: ±3 % rdg ±5 dgt
    Test voltage: 100 V; 250 V; 500 V; 1000 V; 2500 V; 5000 V
    Dimensions: 240 × 188 × 85 mm
    Operating temperature: -20 °C – +50 °C

    Current measurement

    DC current range: 0.01 nA – 6 mA
    Accuracy: ±5.0 % rdg ±5 dgt

    Voltage measurement

    DC voltage: 0.0 V – 1000 V
    DC accuracy: ±1.5 % rdg ±3 dgt
    AC voltage: 0.0 V – 750 V
    AC accuracy: ±1.5 % rdg ±3 dgt

    Capacitance measurement

    Range: 10 nF – 50 µF
    Accuracy: ±10 % rdg ±5 dgt

    Additional parameters

    Output short circuit current: ≥6 mA
    Insulation resistance: >10 MΩ
    Time resolution: 1 ms

    Display

    Type: 4-digit large LCD display
    Backlight: gray (backlight)

    Functions

    Insulation resistance measurement (0.01 MΩ – 10 TΩ) – allows checking the insulation condition of cables, electric motors, transformers and electrical installations.

    High voltage testing up to 5000 V – helps detect insulation damage and leakage points in electrical equipment.

    AC and DC voltage measurement – allows checking the electrical network voltage before performing diagnostics.

    DC current measurement – used for analyzing leakage currents and the condition of electrical circuits.

    Capacitance measurement – allows evaluating electrical properties of cables and capacitors.

    Large LCD display with backlight – ensures clear visibility of measurement results even in poorly lit environments.

    Fast and stable measurement – ensures reliable results during electrical equipment diagnostics.

    Suitable for operation in harsh conditions – operates at temperatures from -20°C to +50°C, making it suitable for both indoor and outdoor use.

    Usage

    For electricians: insulation testing of cables before commissioning electrical systems, inspection of electrical installations after installation, fault detection in electrical networks.

    For engineers and maintenance specialists: transformer insulation analysis, electric motor insulation testing, industrial equipment diagnostics, maintenance of power systems.

    In the energy and industrial sector: inspection of substation equipment, diagnostics of cable lines, monitoring insulation condition of industrial machinery.

    For building maintenance specialists: inspection of electrical installations in buildings, accident prevention and electrical safety verification.

    For home users: experienced users can use the device for testing old electrical installations, generator or inverter insulation testing, and safety verification of high-power electrical equipment.

    Advantages

    Very wide insulation measurement range up to 10 TΩ
    High test voltage up to 5000 V
    Multiple measurement functions integrated in one device
    Large and clear LCD display with backlight
    Suitable for both industry and energy sector
    Stable and accurate measurements
    Wide operating temperature range

    Disadvantages

    High voltage testing requires experience and safety knowledge
    Not suitable for beginners without electrical engineering knowledge
    Capacitance measurement accuracy is lower than specialized instruments 

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.
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