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Versatile and robust, this rotating machine tester is a dedicated static motor tester featuring insulation resistance tests, temperature measurement, and compensation (for IR tests). In addition, this tester features fast-detecting circuitry to reduce the chance of damage to the unit if connected to live circuits or across phases.
Versatile and robust, this rotating machine tester is a dedicated static motor tester featuring insulation resistance tests, temperature measurement, and compensation (for IR tests). In addition, this tester features fast-detecting circuitry to reduce the chance of damage to the unit if connected to live circuits or across phases.
Ideal for many applications, this rotating machine tester features a guard terminal, to eliminate any surface leakage current and detachable test leads with interchangeable clips and probes. Additionally, test results can be downloaded to a USB storage device, which can be accessed by connecting to a PC.
Features
Safety
Insulation Resistance Tests
Voltmeter
Continuity (Resistance) Tests
DLRO Four Wire Kelvin Low Resistance
Motor Direction of Test
Tests the direction of rotation of the motor under test and displays the phase sequence on screen. The connected motor is rotated in one direction and the display shows sequence of the phases of rotation. The motor is next rotated in the opposite direction, the phases are checked again and shown on the display.
Inductance, Capacitance and Resistance Meter (LCR)
Auto inductive, capacitive and resistive test. Frequency selectable to 120 or 1000 Hz. In AUTO mode, the unit automatically determines if the main element of the load is inductive, capacitive or resistive and displays the result on screen. Selectable inductance and capacitance test.
Temperature
Temperature measurement of unit under test, via the supplied thermocouple, allows temperature compensation to be applied in insulation resistance tests.
Display
Full colour graphic display makes the MTR105 simple to understand and easy to use.
Guard Terminal
The guard terminal (G) is a third terminal on the connection panel. Connection of the guard terminal, on certain applications, provides a return path for parallel leakage currents, which could otherwise create significant errors in the insulation measurement. This is especially so for surface contamination of equipment or cables.
Storage and Download of Results
Test results can be downloaded to a USB mass storage device, which can be accessed by connecting to a PC or a Laptop running PowerDB.
Instrument Software Updates
Occasional information bulletins and software updates may be issued on the web site.
Applications
| 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 Polarisation index (PI): 10 minute/1 minute ratio Dielectric absorption ratio (DAR): User configurable 15 seconds or 30 seconds t1 start time with t2 fixed at 60 seconds 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 Operation range: 0.10 MΩ to 1.0 GΩ (IEC61557-2) Leakage current display: 0.1 uA resolution 10% (±3 digits) Voltage display: ±3% ±2 digits ±0.5% of rated voltage Note: Above specifications only apply when high quality silicone leads are being used - as supplied with the instrument. |
| Continuity | Measurement: 0.01 Ω to 1 MΩ (0 to 1000 kΩ analogue scale) Accuracy: ±3% ±2 digits (0 to 99.9 Ω); ±5% ±2 digits (100 Ω to 500 kΩ) Test current: 200 mA (-0 mA +20 mA), 0.01 to 4 Ω Polarity: Single or Dual (factory default) polarity Lead resistance: Null up to 10 Ω Selectable current limit: 20 and 200 mA |
| Capacitance | Range: 0.1 nF to 1 mF Accuracy: ±5.0% ±2 digits (1 nF to 10 μF) |
| Voltmeter | Range: DC: 0 to 1000 V, AC: 10 mV to 1000 V, TRMS sinusoidal (15 to 400 Hz) Accuracy: DC ± 2% ±2 digits (0 to 1000 V), AC: ± 2% ±2 digits (10 mV to 1000 V TRMS) Frequency range: 15 - 400 Hz (50 mV to 1000 V) Frequency resolution: 0.1 Hz Frequency accuracy ±0.5% ±1 digit Diode Test: Diode test accuracy: ±2% ±2 digits, 0.01 to 3 V Display range: 0 to 3 V |
| Temperature Measurement and Compensation | Thermocouple: Type T (Type K and Type J) Thermocouple range: 4 to 392°F (-20 to 200°C) Instrument range: 4 to 1832°F (-20 to 1000°C) Instrument resolution: 0.18°F (0.1°C) Instrument accuracy: ±1.8°F ±20 digits (1°C). Basic accuracy stated assumes forward and reverse measurements. |
| DLRO Four Wire Kelvin Low Resistance | Test current: 200 mA DC Range: 1 mΩ to 10 Ω Resolution: 0.01 mΩ Accuracy: ±0.25% rdg. ±10 digits, accuracy stated includes forward and reverse measurements. |
| Inductance (Instrument Accuracy) | Range: 1 H, 200 mH, 20 mH, 2 mH Accuracy [+(Lx/10000)% +5 digits)]: ±0.7%, ±1%, ±0.7%, ±2%, ±1.2%, ±2% Test frequency: 1 kHz, 120 Hz, 1 kHz, 120 Hz, 1 kHz, 1 kHz only |
| Results Storage | Storage capacity: 256 motor results (date/time stamped) Data download: USB Type A (USB Mass Storage Device) |
| Temperature | Operating: 14 to 122°F (-10 to 50°C) Storage: -13 to 122°F (-25 to 50°C) Calibration: 68°F (20°C) |
| Humidity | 90% RH at 104°F (40°C) maximum |
| Maximum Altitude | 9843' (3000 m) |
| IP rating | IP54 |
| Display | Full LCD colour screen with user configurable backlight |
| Power | Battery: 6 x IEC LR6 1.5 V Alkaline (AA) Battery life: 10 motors per (complete suite of tests at 100 V into 100 MΩ) IEC61557-2 - test cycle, 1200 insulation tests with duty cycle of 5 s testing on 25 s standby at 500 V into 0.5 MΩ. IEC61557-4 test cycle, 1200 continuity tests with duty cycle of 5 s testing on 25 s standby on 1 Ω resistance. Safety protection: IEC61010-1 CAT III 600 V EMC Industrial: IEC61326 Temperature coefficien:t <0.1% per °C up to 1 GΩ |
| Dimensions | 8.98 x 4.1 x 2.95" (228 x 105 x 75 mm) |
| Weight | 2.02 lbs (0.93 kg) |
Click on a category to view a selection of compatible accessories with the Megger MTR105 Rotating Machine Tester, 100 Ω to 200 GΩ, 10 mV to 1000 V AC/0 to 1000 V DC.
| 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 Polarisation index (PI): 10 minute/1 minute ratio Dielectric absorption ratio (DAR): User configurable 15 seconds or 30 seconds t1 start time with t2 fixed at 60 seconds 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 Operation range: 0.10 MΩ to 1.0 GΩ (IEC61557-2) Leakage current display: 0.1 uA resolution 10% (±3 digits) Voltage display: ±3% ±2 digits ±0.5% of rated voltage Note: Above specifications only apply when high quality silicone leads are being used - as supplied with the instrument. |
| Continuity | Measurement: 0.01 Ω to 1 MΩ (0 to 1000 kΩ analogue scale) Accuracy: ±3% ±2 digits (0 to 99.9 Ω); ±5% ±2 digits (100 Ω to 500 kΩ) Test current: 200 mA (-0 mA +20 mA), 0.01 to 4 Ω Polarity: Single or Dual (factory default) polarity Lead resistance: Null up to 10 Ω Selectable current limit: 20 and 200 mA |
| Capacitance | Range: 0.1 nF to 1 mF Accuracy: ±5.0% ±2 digits (1 nF to 10 μF) |
| Voltmeter | Range: DC: 0 to 1000 V, AC: 10 mV to 1000 V, TRMS sinusoidal (15 to 400 Hz) Accuracy: DC ± 2% ±2 digits (0 to 1000 V), AC: ± 2% ±2 digits (10 mV to 1000 V TRMS) Frequency range: 15 - 400 Hz (50 mV to 1000 V) Frequency resolution: 0.1 Hz Frequency accuracy ±0.5% ±1 digit Diode Test: Diode test accuracy: ±2% ±2 digits, 0.01 to 3 V Display range: 0 to 3 V |
| Temperature Measurement and Compensation | Thermocouple: Type T (Type K and Type J) Thermocouple range: 4 to 392°F (-20 to 200°C) Instrument range: 4 to 1832°F (-20 to 1000°C) Instrument resolution: 0.18°F (0.1°C) Instrument accuracy: ±1.8°F ±20 digits (1°C). Basic accuracy stated assumes forward and reverse measurements. |
| DLRO Four Wire Kelvin Low Resistance | Test current: 200 mA DC Range: 1 mΩ to 10 Ω Resolution: 0.01 mΩ Accuracy: ±0.25% rdg. ±10 digits, accuracy stated includes forward and reverse measurements. |
| Inductance (Instrument Accuracy) | Range: 1 H, 200 mH, 20 mH, 2 mH Accuracy [+(Lx/10000)% +5 digits)]: ±0.7%, ±1%, ±0.7%, ±2%, ±1.2%, ±2% Test frequency: 1 kHz, 120 Hz, 1 kHz, 120 Hz, 1 kHz, 1 kHz only |
| Results Storage | Storage capacity: 256 motor results (date/time stamped) Data download: USB Type A (USB Mass Storage Device) |
| Temperature | Operating: 14 to 122°F (-10 to 50°C) Storage: -13 to 122°F (-25 to 50°C) Calibration: 68°F (20°C) |
| Humidity | 90% RH at 104°F (40°C) maximum |
| Maximum Altitude | 9843' (3000 m) |
| IP rating | IP54 |
| Display | Full LCD colour screen with user configurable backlight |
| Power | Battery: 6 x IEC LR6 1.5 V Alkaline (AA) Battery life: 10 motors per (complete suite of tests at 100 V into 100 MΩ) IEC61557-2 - test cycle, 1200 insulation tests with duty cycle of 5 s testing on 25 s standby at 500 V into 0.5 MΩ. IEC61557-4 test cycle, 1200 continuity tests with duty cycle of 5 s testing on 25 s standby on 1 Ω resistance. Safety protection: IEC61010-1 CAT III 600 V EMC Industrial: IEC61326 Temperature coefficien:t <0.1% per °C up to 1 GΩ |
| Dimensions | 8.98 x 4.1 x 2.95" (228 x 105 x 75 mm) |
| Weight | 2.02 lbs (0.93 kg) |
Click on a category to view a selection of compatible accessories with the Megger MTR105 Rotating Machine Tester, 100 Ω to 200 GΩ, 10 mV to 1000 V AC/0 to 1000 V DC.
