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INTRODUCTION
MEWOI4480A series Insulation Resistance Tester, also known as megohm meter, insulation resistance tester, for insulation resistance testing. This instrument is a high performance digital type instrument, with LCD large screen with backlight display, data hold, automatic discharge, automatic shutdown and other functions. The instrument has the functions of test timing and voltage monitoring. When the loop voltage is higher than 36V, the instrument will forbid tested to protect the safety of the tested objects and personnel. The instrument easy to operation, insulation resistance value, test time and output voltage display with the same screen, also have the test functions of dielectric absorption ratio test (DAR), polarization index test（PI), AC voltage testing. This series instrument maximum output voltage 5000V, the biggest test resistance value 400GΩ, maximum short-circuit current 2mA. MEWOI4480A series Insulation Resistance Tester complete appliance is beautiful, wide range, high precision, high resolution, easy to operate, convenient to carry, accurate and reliable, stable performance, strong anti-interference ability. And with the shockproof, dustproof, moisture-proof structure, which is the telecommunication, the electric power, the meteorology, the computer room, the oil field, the mechanical and electrical installation and the maintenance and uses the electric power as the industrial power or the energy industry enterprise department commonly used but essential instrument. It is suitable for measuring the resistance of various insulating materials and the insulation resistance of transformers, motors, cables and electrical equipment. |
Function | Description |
Function | Insulation resistance test, AC/DC voltage test |
Power Supply | DC 1.5V LR14X6PCS dry battery continues stand by above 100h |
Rated Voltage | 50V;250V;500V;1000V;2500V |
Insulation Resistance Range | 0.1MΩ～200GΩ |
Voltage Range | AC/DC 0V～750V |
Shout Circuit Current | ≥2mA MAX |
Max Capacitive Load | 1uF |
DielectricAbsorptionRatioTest (DAR) | YES |
Polarization Index Test（PI) | YES |
Shift | Turn the shift rotary knob to select the appropriate gear |
Backlight | Controllable off-white backlight, suitable for dark places |
Display Mode | 4 digital LCD display, contrast clear |
Measurement indication | LED flicker and buzzer ring in measurement |
LCD Size | 108mm×65mm |
Meter Dimension | 212mm×175mm×76mm |
Test Wires | High voltage bar test wire：Red 1PCS；Probe test wire：Black 1PCS；Alligator clip test wire：1PCS；Alligator clip：1PCS |
Test Time | The single test time is 1 min. During the test, the user can stop automatically or automatically stop after 1 min, and the screen display measurement data |
Battery Voltage | Battery voltage symbol display, when battery voltage is low will remind to replace the battery in time |
Automatic Discharge | Automatic release the voltage of the measured object, During discharging, symbol flash. Discharge completion symbol extinguish |
Auto Shutdown | 15 minutes after boot up, the meter shuts down automatically without any operation |
Power Consumption | Standby: about 40mA(backlight off)；Start up with backlight：about 50mA；Measurement：about 100mA(backlight off) |
Weight | 1230g |
Working Temperature and Humidity | -10℃～40℃；below B29880%rh |
Storage Temperature and Humidity | -20℃～60℃；below 70%rh |
Suitable Safety Standard | IEC61010-1(CATⅢ 300V、CAT IV 150V、Pollution 2) |
Selection Guide
| Model | Max Rated Voltage | Insulation Resistance Range | Volatage Range |
| MEWOI4480A | 2500V | 0.1MΩ~200GΩ | 0V~750V |
| MEWOI4480B | 5000V | 0.1MΩ~400GΩ | 0V~750V |
Packing Details
Package | Outer Package | Carton |
Inner Package | Tool bag | |
Accessory | Tester | 1pcs |
High voltage rod | 1pcs red | |
Pen probe test wire | 1pcs black | |
Alligator clip test wire | 1pcs black | |
Alligator clip | 1pcs | |
Manual, certification, warranty card | 1pcs |
