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Megger MTR105 Best Rotating Machine Tester
Introduction of Megger MTR105
The Megger MTR105 is a specialized static motor tester, combining Megger’s trusted and reliable Insulation Resistance (IR) testing with the classic features and dependability that Megger is known for. This versatile motor tester builds on Megger’s proven infrared testing technology by incorporating DLRO four-wire Kelvin low resistance testing, along with inductance and capacitance measurements, all within a rugged handheld device—a first of its kind.
Additionally, the MTR105 offers temperature measurement and compensation for infrared testing, motor rotation direction, and power phase rotation testing. These enhanced capabilities make the MTR105 a highly versatile, portable motor testing tool for real-world applications. It features a robust outer shell for added durability, earning an IP54 weatherproof rating for enhanced protection in challenging environments.
Megger MTR105 Key Features
- Full color graphic display
- 3 Phase insulation resistance
- Temperature correction for insulation resistance
- Guard terminal
- DLRO four wire Kelvin
- Continuity and diode test
- Motor direction of rotation
- Capacitance and inductance
Megger MTR105 Specifications
| Parameter | Details |
| Quoted Accuracy | All accuracies are at 20 °C (68 °F). |
| Insulation Resistance | |
| Volts Accuracy | |
| 50 V | 10 GΩ ±2% ±2 digits ±4.0% per GΩ |
| 100 V | 20 GΩ ±2% ±2 digits ±2.0% per GΩ |
| 250 V | 50 GΩ ±2% ±2 digits ±0.8% per GΩ |
| 500 V | 100 GΩ ±2% ±2 digits ±0.4% per GΩ |
| 1000 V | 200 GΩ ±2% ±2 digits ±0.2% per GΩ |
| Polarization Index (PI) | 10 min / 1-minute ratio |
| Dielectric Absorption Ratio (DAR) | User configurable 15 s or 30 s t1 start time with t2 fixed at 60 s |
| Guard Terminal Performance | <5% error at 500 kΩ parallel circuit resistance with 100 MΩ load |
| Resolution | 0.1 kΩ |
| Short Circuit/Charge Current | 2 mA +0% -50% (IEC61557-2) |
| Terminal Voltage Accuracy | -0% +2% ±2 V |
| Test Current | 1 mA at minimum pass value of insulation to a maximum of 2 mA |