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KV3122 Insulation Resistance Tester is suitable for measuring the resistance of various insulating materials and the insulation resistance of transformers, motors, cables and electrical equipment. Digital insulation resistance meter is composed of medium and large scale integrated circuits, including high-precision micro current measurement system, digital boost system and automatic discharge circuit. Only a high voltage line and a signal line are needed to connect the measured the test object to measure.
It can automatically calculate the absorption ratio(DAR) and polarization index(PI), and automatically store the data of 15 seconds, 30 seconds, 1 minute and 10 minutes.
Technical parameter
| Output Volt | Test Range | Accuracy |
| 250V（15%）DC | 0.01MΩ~2.50GΩ | ±3%rdg±5dgt |
| 2.50GΩ~250 GΩ | ±15%rdg±5dgt | |
| 500V（10%）DC | 0.01MΩ~5.00GΩ | ±3%rdg±5dgt |
| 5.00GΩ~500 GΩ | ±15%rdg±5dgt | |
| 1000V（10%）DC | 0.01MΩ~10.00GΩ | ±3%rdg±5dgt |
| 10.00GΩ~1.00 TΩ | ±15%rdg±5dgt | |
| 2500V（10%）DC | 0.01MΩ~25.0GΩ | ±3%rdg±5dgt |
| 25.0GΩ~2.50 TΩ | ±15%rdg±5dgt | |
| 5000V（10%）DC | 0.01MΩ~50.0GΩ | ±3%rdg±5dgt |
| 50.0GΩ~5.00 TΩ | ±15%rdg±5dgt |
| Test Volt | Test Range | Accuracy |
| DC Voltage | 0.01V~1000V | ±2%rdg±3dgt |
3．General Specification
| Function | Insulation resistance, polarization index, absorption ratio, AC and DC voltage test; automatic discharge function; environmental temperature test; clock function |
| Power | DC 14.8V 2200mAh rechargeable Li-Battery，full battery volt approx. 16.8V |
| Voltage | Range：250V、500V、1000V、2500V、5000V |
| Current | ≥5mA(≥10mA、≥3.5mA、≥1.5mA option) |
| Wire connection method | L port：“L” called high voltage output port，It is called the end of the line and leads to one end of the measured object |
| G port：”G” called shield end, It is used to measure the insulation resistance of insulating materials or cables by three electrode method. It is connected to the end of electrode protection ring. | |
| E port：”E” called ground earth end，Connect to the ground and zero terminals of the measured object. For example, motor shell metal, transformer core, cable shield. | |
| V port：AC / DC voltage measuring terminal（AC / DC automatic identification） | |
| Resolution | Insulation Resistance：0.01MΩ |
| AC Voltage：0.01V | |
| DC Voltage：0.01V | |
| Test Time | 1min~30min（regarding method of test，settable) |
| Backlight | Controllable white screen backlight, suitable for dark field |
| Shift | Automatic shift |
| LCD | 4 bite LCD display，white screen back light |
| LCD display size | 124mm×67mm |
| Test display | In the measurement, the LED flashes and the progress bar chart indicates |
| Charge display | When charging, the indicator light on the charger is red and green after full charge |
| Size | Tester Size：(LWH) 258mm×215mm×83mm |
| Standard test lines | One red high voltage test rod, one green and one black test line |
| Battery Voltage | Display the remaining power of the battery. When the battery is low, please charge it in time |
| Communication port | With USB port, storage data upload to PC, save and print |
| Telecommunication Lines | USB line 1m, length 1.5m |
| Working Current | Stand by：25mA Max(backlight off)；backlight：25mA Max(only backlight on)；working：450mA Max(backlight off) |
| Weight | Instrument weight：2.19kg(within battery) |
| Total weight：3.50kg(with package) | |
| Tool back | Yellow-Black double color toolbag，carry conveniently，good looking toolbag |
| Working Humiture | -10℃～40℃；80%rh below |
| Storage Humiture | -20℃～60℃；70%rh below |
| Withstand voltage | AC 3700V/rms(between outer shell two far points) |
| Insulation Resistance | 20MΩ above (between bottom metal screw and top end 500V) |
| Electromagnetic Characteristic | IEC61326(EMC) |
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