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INTRODUCTION
Click to download: MEWOI68C,68D,68G Digital Insulation Tester User Manual
Click to download: MEWOI68C,68D,68G Digital Insulation Tester Specification
| The Digital Insulation Resistance Tester series have high performance, and safe configuration and improved electro circuit. It is one new item which has more fully function, higher precision and easier operation. It’s also one quakeproof, dustproof and damp-proof tester and can fit work environment of outdoor. The output testing voltage can be changed between 100V/250V/500V/1000V/2500V/5000V for different item no. The resistance can reach 200GΩ; the tester also can measure alternating voltage. This Tester apply for all kinds or electric equipment and insulation materials such as transformer, electromotor, cable, switch appliance, etc.It is a perfect electrical testing meter. |
Features
Features | Low power consumed CMOS double integral A/D transforming IC, auto-checking to zero, auto displaying polarity, displaying when low battery. |
LCD | 3 1/2 digits display with a max. reading of 1999 |
Data Hold | Has function of holding data and displaying signal. |
Backlight | LCD back light |
Voltage Switch | Can use rotating switch when testing voltage |
Voltage Range | 1-750V |
High voltage indicate | High voltage is on the rails when LED is on |
Low Battery Indicate | Displaying when battery is low |
Power Supply | Drove by Battery not by hand |
Auto switch | Auto switch the range when measuring resistance |
Load | With strong load, appox.1.0mA output short current. |
Circuit Protection | Perfect circuit protect, preventing damage by voltage shock effectively |
LCD Dimension | 68×55mm (Height of character is 35mm) |
Battery | Power: six battery 5# which is 1.5V (R6AA SUM-3)(MEWOI68C, D, G) |
Meter Dimension | 218×122×75mm |
Weight | 900g (contain battery). |
Working Environment | Working temperature: 0～40°C, relative humidity<80%,Storage temperature: -10～50°C, relative humidity <85%. Temperature to ensure precision: 23 ± 5°C, relative humidity<75%. |
Technical Specification
LCD | MEWOI168C | MEWOI168G | MEWOI168D |
Voltage Max | 5000V | 2500V | 1000V |
Testing Rating Voltage | 500V/1000V/2500V/5000V | 250V/500V/1000V/2500V | 100V/250V/500V/1000V |
Output voltage | 90～110% Testing Rating Voltage | ||
Resistance Range | 1MΩ～200GΩ | 1MΩ～20GΩ | 1MΩ～20GΩ |
Accuracy | 1MΩ～200MΩ: ± ( 3.0%+5 ), 200MΩ～10GΩ: ± ( 5.0%+5 ), 10GΩ～200GΩ: ± ( 10.0%+5 ) | ||
Resolution | 20MΩ: 10kΩ, 200MΩ: 100kΩ, 2000MΩ: 1MΩ, 20GΩ: 10MΩ, 200GΩ: 100MΩ | ||
Scale of AC voltage | 1～750V | ||
Accuracy | ± ( 2.0%+5 ) | ||
Resolution | 1V | ||
Frequency response | 40～400Hz | ||
Note: When the measured resistance is less than 5MΩ in any rating test voltage, the measuring time should not be more than 10 seconds.
Remark: fall down resistance
Rating test voltage | fall down resistance |
100V | 1MΩ |
250V | 1MΩ |
500V | 1MΩ |
1000V | 2MΩ |
2500V | 2MΩ |
5000V | 8MΩ |
Explaining: Minimum measured resistance means lower limit value of resistance which it ensure the voltage of two extremity of measuring is less than 90% of rating test voltage.
SELECTION GUIDE
| Model No./Link | Voltage Range | Resistance Range | Resolution | Accuracy | Short circuit current | Polarization Index Absorption Ratio | Power Supply | Others |
| 1000V | 1MΩ～20GΩ | 20MΩ: 10kΩ, 200MΩ: 100kΩ, 2000MΩ: 1MΩ, 20GΩ: 10MΩ, 200GΩ: 100MΩ | 1MΩ～200MΩ: ± ( 3.0%+5 ), 200MΩ～10GΩ: ± ( 5.0%+5 ), 10GΩ～200GΩ: ± ( 10.0%+5 ) | - | - | - | - |
| 2500V | 1MΩ～20GΩ | - | - | - | - | ||
| 5000V | 1MΩ～200GΩ | - | - | - | - | ||
| 1000V | 0～19990MΩ | 0.01MΩ 0.1MΩ， 1.0MΩ， 10.0MΩ | 0～2000MΩ≤±5%±2d, 2000MΩ～19990MΩ≤10%±2d | ＞1.6mA | - | 8×1.5V(AA，R6)battery | - |
| 2500V | 0～19990MΩ | 0.01MΩ 0.1MΩ， 1.0MΩ， 10.0MΩ | 0～2000MΩ≤±5%±2d, 2000MΩ～19990MΩ≤10%±2d | ＞1.6mA | - | 8×1.5V(AA，R6)battery | - |
| 5KV | 500GΩ @ 5kV. | 1 MΩ | ± (10%+5Dgt) | 5mA | √ | Internal rechargeable battery | Printer+Touch Screen |
| 10KV | 1000GΩ @ 10kV. | 1 MΩ | ± (10%+5Dgt) | 5mA | √ | Internal rechargeable battery | Printer+Touch Screen |
| 10KV | 10TΩ @ 10kV. | 1 MΩ | ± (10%+5Dgt) | 5mA | √ | Rechargeable battery or AC Power Supply | Printer+Capacitance +Leakage Current |
| 15KV | 20TΩ @ 15kV. | 1 MΩ | ± (10%+5Dgt) | 5mA | √ | Rechargeable battery or AC Power Supply | Capacitance +Leakage Current |
| 20KV | 20TΩ @ 15kV. | 1 MΩ | ± (10%+5Dgt) | 5mA | √ | Rechargeable battery or AC Power Supply | Capacitance +Leakage Current |
