Description
The megger insulation tester can measure the insulation resistance of large transformers, generators, high-voltage motors and so on. The megger can be selected from the test voltages of 100, 250, 500V and 1kV, with the capabilities of testing insulation resistance up to 10 GΩ. High reliability, accuracy and low cost.
Specification
| Model | ATO-IRT-UT511 | ||
| Insulation Resistance (Ω) | Test voltage/accuracy | 100V/250V/500V/1000V | 0% ~ 20% |
| Measurement range/accuracy | 100V | 0.1 MΩ ~ 500 MΩ | ±(3%+5) |
| 250V | 0.5 MΩ ~ 2 GΩ | ±(3%+5) | |
| 500V | 1 MΩ ~ 4 GΩ | ±(3%+5) | |
| 1000V | 2 MΩ ~ 10 GΩ | ±(3%+5) | |
| Short-circuit current | <2mA | ||
| DC Voltage (V) | Test range/accuracy | 1000V | ±(2%+3) |
| AC Voltage (V) | Test range/accuracy | 30V ~ 750V (50Hz/60Hz) | ±(2%+3) |
| Low Resistance (Ω) | Range/accuracy | 0.1 Ω ~ 999.9 Ω | ±(1%+3) |
| Features | Display | 9999 counts | |
| Auto ranging | Yes | ||
| Auto power off | Yes | ||
| Low battery indication | Yes | ||
| Data storage | 18 | ||
| Comparison measurement | Yes | ||
| PI | Yes | ||
| DAR | Yes | ||
| LCD backlight | Yes | ||
| Analog bar graph | 30 | ||
| Over-range warning | Yes | ||
| High voltage indication | Yes | ||
| Timing measurement (around 30 min) | Yes | ||
| General | Power supply | 1.5V battery (LR14) x 8 | |
| Display size | 123mm x 58mm | ||
| Operating temperature | 0℃ ~ 40℃ (32℉ ~ 104℉) | ||
| Storage Temperature | -20℃ ~ 60℃ (-4℉ ~ 140℉) | ||
| Relative Humidity | ≤85%RH @ 0℃ ~ 40℃ below; ≤90%RH @ -20℃ ~ 60℃ |
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| Product weight | 2kg | ||
| Product size | 202mm x 155mm x 94mm | ||
| Standard accessories * | 2*single plug test lead with alligator clip (black and green), 1*double plug test lead with alligator clip (red), batteries |
Note: * Batteries are Not Included for air shippment.
Insulation Resistance Test Wiring Diagram
Tips: Working principle of insulation resistance tester
Insulation resistance tester, also known as digital insulation tester, Megohmmeter, Megger insulation tester adopts the embedded industrial SCM real-time operating system, with digital analog pointer and digital segment code display in perfect combination. ATO series of Megger insulation meter has a variety of test voltage options, large capacity, strong anti-interference, AC and DC dual-use, simple operation and so on. It is an ideal tool for measuring the insulation resistance of large-capacity transformer, current transformer, generator, high-voltage motor, electric capacitor, power cable and arrester.
Insulation resistance tester is mainly working by using a voltage exciting the tested device or circuit, and then measuring the current generated by the excitation, using ohm’s law to obtain the resistance. For example, the testers apply a much higher voltage when making resistance measurements than the ohmmeter capabilities available on a digital multimeter (DMM). Megohmeters usually use voltages ranging from 50V to up to 5kv; a typical DMM has a voltage of less than 10v. For insulation test, it require measuring very large resistance value, the capability up to 10 TΩ, and requires a higher voltage.
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