Insulation resistance tester (Megohmmeter) | 0.01 MΩ–10 TΩ | 100–5000 V | LCD display | AC/DC voltage, current and capacitance measurement
Code: ES-JSJY912Insulation 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.
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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 °CCurrent measurement
DC current range: 0.01 nA – 6 mA
Accuracy: ±5.0 % rdg ±5 dgtVoltage 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 dgtCapacitance measurement
Range: 10 nF – 50 µF
Accuracy: ±10 % rdg ±5 dgtAdditional parameters
Output short circuit current: ≥6 mA
Insulation resistance: >10 MΩ
Time resolution: 1 msDisplay
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 rangeDisadvantages
High voltage testing requires experience and safety knowledge
Not suitable for beginners without electrical engineering knowledge
Capacitance measurement accuracy is lower than specialized instrumentsIllustrative 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.This product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.
CE certification means that the product has been evaluated according to the main criteria:
Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purposeCE marking allows this product to:
be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environmentsThe CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.
What does this mean for you as a buyer?
Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions
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