Digital Insulation Resistance Tester
Product Introduction
The Digital Insulation Resistance Tester is a professional high-voltage insulation testing instrument designed for preventive maintenance and insulation diagnostics of electrical equipment. Featuring 100V–5000V selectable test voltages, up to 2000GΩ insulation resistance measurement, 500 groups of data storage, DAR & PI analysis, USB communication, and a rechargeable lithium battery, it delivers fast, accurate, and reliable testing for power utilities, substations, industrial facilities, and electrical contractors.
This tester supports insulation resistance measurement, DC voltage testing, AC voltage testing, Dielectric Absorption Ratio (DAR), and Polarization Index (PI) analysis, helping engineers quickly evaluate insulation conditions and detect potential faults before equipment failure.
Applications
- Transformer insulation resistance testing
- Power cable insulation testing
- Electric motor insulation testing
- Generator insulation condition assessment
- Switchgear and circuit breaker maintenance
- Substation commissioning and preventive maintenance
- Industrial electrical equipment inspection
- Renewable energy power system maintenance
- Electrical engineering projects
- Factory and utility maintenance services
Key Features
- Selectable test voltages from 100V to 5000V
- Wide insulation resistance measurement range up to 2000GΩ
- Supports DAR (Dielectric Absorption Ratio) testing
- Supports PI (Polarization Index) testing
- Large LCD touchscreen with adjustable backlight
- Stores up to 500 groups of measurement data
- USB communication for data transfer and report management
- Rechargeable high-capacity lithium battery
- Automatic discharge and over-voltage protection
- Automatic power-off function for longer battery life
- Strong anti-interference capability for substation environments
- Dustproof and moisture-resistant design suitable for outdoor use
- Complies with IEC61010-1, IEC61557, and related international safety standards
Technical Specifications
| Item | Specification |
|---|
| Test Voltage | 100V / 250V / 500V / 1000V / 2500V / 5000V |
| Insulation Resistance Range | 0.50MΩ – 2000GΩ |
| DC Voltage Measurement | 0 – 1000V |
| AC Voltage Measurement | 0 – 750V |
| Output Short Circuit Current | ≥5mA (5000V) |
| DAR Measurement | Supported |
| PI Measurement | Supported |
| Display | Large LCD Touchscreen |
| Data Storage | 500 Groups |
| Communication Interface | USB |
| Power Supply | 11.1V Rechargeable Lithium Battery |
| Protection Rating | IP54 |
| Safety Standards | IEC61010-1, IEC61557-1, IEC61557-5, IEC60529 |
| Operating Temperature | -10°C to +50°C |
| Relative Humidity | ≤90% RH |
Advantages
- High-voltage insulation testing up to 5000V for a wide range of electrical equipment
- Wide 2000GΩ measurement range for precise insulation evaluation
- Built-in DAR and PI analysis for comprehensive insulation condition assessment
- Portable rechargeable design ideal for field testing
- USB connectivity simplifies data management and report generation
- Rugged anti-interference design ensures reliable operation in substations and industrial environments
- User-friendly touchscreen interface improves testing efficiency
- Suitable for preventive maintenance, commissioning, troubleshooting, and routine inspections
FAQ
Q1. What is an insulation resistance tester used for?
An insulation resistance tester measures the insulation resistance of electrical equipment such as transformers, motors, generators, cables, and switchgear to evaluate insulation performance and operational safety.
Q2. What test voltage should I select?
The appropriate test voltage depends on the rated voltage of the equipment under test. This tester provides selectable voltages from 100V to 5000V to meet various testing standards and applications.
Q3. Can this tester perform DAR and PI measurements?
Yes. The instrument supports both Dielectric Absorption Ratio (DAR) and Polarization Index (PI) measurements for advanced insulation condition analysis.
Q4. Can test data be exported to a computer?
Yes. The tester includes a USB communication interface that allows stored measurement data to be transferred to a computer for analysis, reporting, and record management.
Q5. Is this tester suitable for outdoor field work?
Yes. The rechargeable lithium battery, IP54 protection rating, and strong anti-interference design make it ideal for substations, industrial plants, and outdoor electrical maintenance.
Warranty
2-Year Warranty & Technical Support
- 2-Year Product Warranty
- Lifetime Technical Support
- Factory Calibration Before Shipment
- Software Upgrade Support
- OEM & ODM Customization Available
- Spare Parts Supply and Long-Term After-Sales Service
- Professional Technical Assistance Within 24 Hours
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