An Insulation Resistance test measures the total resistance of a product’s insulation system. The test is usually performed as a quick check after a product is manufactured, installed or repaired. It is also a useful test to perform when doing preventative maintenance on a product over time. Changes in the insulation measurement can help to predict if a product such as a motor, cable or component is due to fail.
A Megohmmeter refers to an instrument whose meter is usually scaled to read in MΩ (millions of Ω’s). An Insulation Resistance tester refers to an instrument that measures the resistance of a product’s insulation system.
| Model # | AR3123 | AR3125 | AR3126 | AR3127 |
| Rated Voltage | 250V/500V/1000V/2500V | 500V/1000V/2500V/5000V | 500V/1000V/2500V/5000V | 250V~5000V |
| Testing Range | 250V:0.0~499.9MΩ500V:0.0~999MΩ 1000V:0.0~1.99GΩ 2500V:0.0~99.9GΩ |
500V:0.0~999MΩ1000V:0.0~1.99GΩ 2500V:0.0~99.9GΩ 5000V:0.0~1000GΩ |
500V:0.0~999MΩ1000V:0.0~1.99GΩ 2500V:0.0~99.9GΩ 5000V:0.0~1000GΩ |
250V:0.0~499.9MΩ500V:0.0~999MΩ 1000V:0.0~1.99GΩ 2500V:0.0~99.9GΩ 5000V:0.0~1000GΩ |
| Accuracy | ±5%rdg±5dgt | ±5%rdg±5dgt | ±5%rdg±5dgt | ±5%rdg±5dgt |
| DC/AC Voltage Test | 30~600V | 30~600V | 30~600V | 30~600V |
| Resolution | 1.0V | 1.0V | 1.0V | 1.0V |
| Overload Protect | AC 1200V/10sec | AC 1200V/10sec | AC 1200V/10sec | AC 1200V/10sec |
| Withstand Voltage | AC 8320V/5 sec | AC 8320V/5 sec | AC 8320V/5 sec | AC 8320V/5 sec |
| Insulated Impedance | 1000MΩ | 1000MΩ | 1000MΩ | 1000MΩ |
| Max. Short Circuit Current | 1.4mA | 1.4mA | 1.4mA | 1.4mA |
| Polarization Index&DAR | √ | √ | √ | √ |
| External DC Adapter | √ | √ | √ | |
| USB Transmission | — | — | √ | √ |
| PACKING INFORMATION | ||||
| Power | C*8 battery | C*8 battery | C*8 battery | C*8 battery |
| Product Net Weight | 1027g | 1027g | 1027g | 1027g |
| Product Size | 153*213*95mm | 153*213*95mm | 153*213*95mm |
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