Digital Insulation Resistance Tester Also known as Zhaoou Meter, High Voltage Insulation Resistance Tester Wait—for testing the insulation resistance. This instrument features an LCD touchscreen display, data storage, data retrieval, alarm functions, automatic shutdown, and more. It also provides functions for measuring DC voltage, AC voltage absorption ratio, and polarization index. Aesthetically pleasing and high-end overall design, wide measurement range, high resolution, easy operation, portable, accurate, reliable, stable performance, strong interference resistance. It also features anti-vibration, dustproof, and moistureproof construction; it’s an indispensable instrument widely used in telecommunications, power generation/transmission, meteorology, data centers, oil fields, electrical installation and maintenance, and industrial enterprises that utilize electricity as industrial power or energy. It is suitable for measuring the resistance values of various insulating materials and the insulation resistance of transformers, motors, cables, electrical equipment, etc.
A digital insulation resistance tester is composed of a medium-scale integrated circuit. This table shows high output power and multiple output voltage levels (six levels). Rated insulation test voltage range: 100 V–5000 V; insulation resistance measurement range: 0.50 MΩ–2000 GΩ. DC voltage measurement range: 0–1000 V; AC voltage measurement range: 0–750 V.
| Measuring Function | Output Voltage | Measuring Range | Accuracy | Resolution |
|---|---|---|---|---|
| Insulation Resistance | 100V(±10%) | 0.50 MΩ~5.00MΩ | ±3%rdg±5dgt | 0.01MΩ |
| 5.00 MΩ~50.00MΩ | ±3%rdg±5dgt | 0.01MΩ | ||
| 5.0MΩ~50.0MΩ | ±3%rdg±5dgt | 0.1MΩ | ||
| 50MΩ~500MΩ | ±3%rdg±5dgt | 1MΩ | ||
| 0.50GΩ~5.00GΩ | ±5%rdg±5dgt | 0.01GΩ | ||
| 5.0GΩ~20.0GΩ | ±10%rdg±5dgt | 0.1GΩ | ||
| 250V(±10%) | 0.10 MΩ~1.00MΩ | ±3%rdg±5dgt | 0.01MΩ | |
| 1.00 MΩ~10.00MΩ | ±3%rdg±5dgt | 0.01MΩ | ||
| 10.0MΩ~100.0MΩ | ±3%rdg±5dgt | 0.1MΩ | ||
| 100MΩ~1000MΩ | ±3%rdg±5dgt | 1MΩ | ||
| 1.00GΩ~10.00GΩ | ±5%rdg±5dgt | 0.01GΩ | ||
| 10.0GΩ~30.0GΩ | ±10%rdg±5dgt | 0.1GΩ | ||
| 500V(±10%) | 0.20 MΩ~2.00MΩ | ±3%rdg±5dgt | 0.01MΩ | |
| 2.00 MΩ~20.00MΩ | ±3%rdg±5dgt | 0.01MΩ | ||
| 20.0MΩ~200.0MΩ | ±3%rdg±5dgt | 0.1MΩ | ||
| 200MΩ~2000MΩ | ±3%rdg±5dgt | 1MΩ | ||
| 2.00GΩ~20.00GΩ | ±5%rdg±5dgt | 0.01GΩ | ||
| 20.0GΩ~50.0GΩ | ±10%rdg±5dgt | 0.1GΩ | ||
| 1000V(±10%) | 0.50MΩ~5.00MΩ | ±3%rdg±5dgt | 0.01MΩ | |
| 5.00MΩ~50.00MΩ | ±3%rdg±5dgt | 0.01MΩ | ||
| 50.0MΩ~500.0MΩ | ±3%rdg±5dgt | 0.1MΩ | ||
| 500MΩ~5000MΩ | ±3%rdg±5dgt | 1MΩ | ||
| 5.00GΩ~50.00GΩ | ±5%rdg±5dgt | 0.01GΩ | ||
| 50.0GΩ~100.0GΩ | ±10%rdg±5dgt | 0.1GΩ | ||
| 2500V(±10%) | 0 MΩ~10MΩ | ±3%rdg±5dgt | 0.01MΩ | |
| 10 MΩ~100MΩ | ±3%rdg±5dgt | 0.1MΩ | ||
| 100 MΩ~1000MΩ | ±3%rdg±5dgt | 1MΩ | ||
| 1 GΩ~10GΩ | ±5%rdg±5dgt | 0.01GΩ | ||
| 10 GΩ~100GΩ | ±10%rdg±5dgt | 0.1GΩ | ||
| 100 GΩ~300GΩ | ±20%rdg±5dgt | 1GΩ | ||
| 5000V(±10%) | 0 MΩ~20MΩ | ±3%rdg±5dgt | 0.01MΩ | |
| 20 MΩ~200MΩ | ±3%rdg±5dgt | 0.1MΩ | ||
| 200 MΩ~2000MΩ | ±3%rdg±5dgt | 1MΩ | ||
| 2 GΩ~20GΩ | ±5%rdg±5dgt | 0.01GΩ | ||
| 20 GΩ~200GΩ | ±10%rdg±5dgt | 0.1GΩ | ||
| 200 GΩ~2000GΩ | ±20%rdg±5dgt | 1GΩ |
| Specification Items | Details |
|---|---|
| Function | Insulation Resistance Test, Voltage Test |
| Reference Conditions | 23℃±5℃, Below 75%RH |
| Rated Voltage | 100V, 250V, 500V, 1000V, 2500V, 5000V |
| Insulation Resistance Range | 0.50MΩ~2000GΩ, Resolution: 0.01MΩ |
| Measuring Voltage (V) | Rated Voltage * (1±10%) |
| DC Voltage Range | 0~1000V, Resolution: 0.1V |
| AC Voltage Range | 0~750V, Resolution: 0.1V |
| Output Short-Circuit Current | ≥5mA (5000V) |
| Absorption Ratio & Polarization Index Measurement | Available |
| Power Supply | 11.1V Rechargeable Lithium Battery |
| Backlight | Adjustable Backlight, Suitable for Dim Environments |
| LCD Display Size | 153.84mm * 85.63mm |
| Meter Dimensions (L*W*H) | 296.6mm * 174.5mm * 74mm |
| USB Interface | With USB Interface, Software Monitoring, Stored Data Can Be Uploaded to Computer and Saved |
| Communication Cable | 1 USB Communication Cable |
| Data Storage | 500 Groups |
| Data Review | Data Review Function Available |
| Overrange Display | Available |
| Alarm Function | Alarm Prompt When Measured Value Exceeds the Alarm Setting Value |
| Power Consumption | Standby: 275mA Max; Measuring: 423mA Max |
| Meter Weight | 2750g (Including Battery) |
| Battery Voltage | Low Battery Symbol Display When Battery Voltage Is Insufficient |
| Auto Power Off | Auto Power Off After 15 Minutes of No Operation |
| Insulation Resistance (Between Measuring Circuit and Housing) | ≥50MΩ |
| Withstand Voltage | AC3kV/50Hz for 1min |
| Operating Temperature and Humidity | -10℃~+50℃, <85%RH |
| Storage Temperature and Humidity | -15℃~+55℃, <90%RH |
| Applicable Safety Standards | IEC61010-1, IEC1010-2-31, IEC61557-1,5, IEC60529 (IP54), Pollution Degree 2, CAT Ⅲ 300V |