Megger MTR105 Rotating Machine Tester
The Megger MTR105 rotating machine tester is a compact hand-held instrument designed for testing and maintaining motors and generators. Built for engineers, maintenance teams and motor repair specialists, the MTR105 rotating machine tester combines several important electrical test functions into one easy-to-use device.
The Megger MTR105 includes insulation resistance testing, DLRO four-wire Kelvin low resistance testing, continuity testing, motor rotation testing and LCR measurement. This means engineers can carry out several important motor tests using one portable tester instead of carrying multiple instruments.
The Megger MTR105 rotating machine tester is designed for offline testing of rotating machinery. It is commonly used during production testing, preventative maintenance, fault finding and motor repair work. The tester is suitable for small and medium-sized motors and generators across a wide range of industries.
The rugged over-moulded housing gives the MTR105 rotating machine tester excellent durability for industrial environments. With an IP54 environmental protection rating, the instrument offers protection against dust and moisture ingress, making it ideal for both workshop and field applications.
The MTR105 rotating machine tester also features a full colour graphic display, detachable test leads and onboard data storage for improved usability and reporting.
Megger MTR105 in Action!
Why choose the Megger MTR105 rotating machine tester?
The Megger MTR105 is designed to make motor testing faster, easier and more reliable. Instead of carrying separate insulation testers, low resistance ohmmeters and motor rotation testers, engineers can complete multiple tests using one compact instrument.
The MTR105 rotating machine tester combines Megger’s trusted insulation resistance testing technology with advanced motor diagnostic functions. This gives maintenance engineers a practical all-in-one solution for everyday motor testing tasks.
One of the key advantages of the Megger MTR105 is its simple operation. The rotary selector and full colour screen help users move quickly between test modes. Clear on-screen guidance also helps reduce testing errors.
The MTR105 rotating machine tester supports:
- Insulation resistance testing
- PI and DAR testing
- Timed insulation testing
- True RMS voltage measurement
- Motor direction testing
- Supply phase rotation testing
- DLRO low resistance testing
- Capacitance and inductance testing
- Continuity and diode testing
The Megger MTR105 also includes temperature measurement and compensation functions, helping engineers achieve more accurate test results.
Megger MTR105X with Bluetooth connectivity
The Megger MTR105X builds on the standard MTR105 rotating machine tester by adding Bluetooth connectivity and enhanced data management features.
The MTR105X rotating machine tester allows engineers to stream live test data wirelessly to Megger CertSuite™ Asset software. This helps improve reporting, record keeping and asset management.
Using the Megger MTR105X, users can:
- View live test readings remotely
- Create digital reports faster
- Store asset-based test records
- Export test results wirelessly
- Improve traceability and maintenance documentation
The Megger MTR105X rotating machine tester is especially useful for maintenance teams working across large industrial sites where efficient reporting and digital record keeping are important.
Megger MTR105 rotating machine tester key features
- Multiple test functions in one hand-held instrument
- Insulation resistance testing up to 1000 V
- User-selectable insulation voltage from 10 V to 999 V
- 3-phase insulation resistance testing
- Polarisation Index (PI) testing
- Dielectric Absorption Ratio (DAR) testing
- Timed insulation testing
- DLRO four-wire Kelvin low resistance testing
- Automatic and manual low resistance testing
- Bi-directional resistance testing
- Motor direction of rotation testing
- Supply phase rotation testing
- Capacitance, inductance and resistance measurement
- True RMS AC/DC voltage measurement
- Continuity and diode testing
- Temperature compensation functions
- Guard terminal functionality
- Full colour graphic display
- USB data storage and export
- Bluetooth live streaming on the MTR105X
- Stores results for up to 256 motors
- CAT III 600 V safety rating
- IP54 environmental protection
- Rugged over-moulded case
Applications for the MTR105 rotating machine tester
The Megger MTR105 rotating machine tester is designed for many different motor testing applications. It is widely used during installation, commissioning, routine maintenance and repair work.
Typical applications include:
- Production testing of newly manufactured motors
- Testing repaired and refurbished motors
- Preventative maintenance testing
- Motor fault finding
- Workshop testing
- Field-based motor maintenance
- Generator testing
The MTR105 rotating machine tester is commonly used in:
- Utilities and power generation
- Water and wastewater facilities
- Oil and gas industries
- Manufacturing plants
- HVAC maintenance
- Motor repair workshops
- Rail and transport industries
- Marine maintenance
- Electric vehicle manufacturing and servicing
Built for industrial environments
The Megger MTR105 rotating machine tester is built for demanding industrial use. The robust over-moulded housing helps protect the instrument against knocks, drops and harsh site conditions.
The IP54 environmental protection rating helps guard against dust and moisture ingress, making the MTR105 rotating machine tester suitable for workshop and outdoor environments.
The tester also includes several built-in safety features designed to protect both the user and the instrument. These include:
- Live circuit detection
- Automatic test inhibit protection
- User-selectable lockout voltage
- Automatic discharge after insulation testing
- Fuse failure detection
The Megger MTR105 rotating machine tester is rated CAT III 600 V and complies with IEC61010 and IEC61557 safety standards.
What comes with the Megger MTR105 rotating machine tester?
- MTR105 or MTR105X rotating machine tester
- Hook strap assembly
- Soft carrying pouch
- Temperature probe
- IR lead set
- Grabber clips
- Long reach test probes
- Kelvin clip lead set
- USB memory stick
- 6 x AA batteries
- Calibration certificate
The supplied accessories help users start testing quickly straight out of the box.
Why engineers choose the Megger MTR105
The Megger MTR105 rotating machine tester is popular because it combines several important motor tests into one reliable and portable instrument. Engineers can move between insulation testing, winding resistance testing and motor rotation testing quickly and easily.
The MTR105 rotating machine tester also helps reduce downtime by allowing maintenance teams to identify developing motor problems before they lead to major failures.
With easy operation, strong safety features and rugged construction, the Megger MTR105 is suitable for both experienced engineers and newer maintenance technicians.
The addition of Bluetooth connectivity on the Megger MTR105X also gives users a more modern and efficient way to manage motor testing records and reports.
❓ Frequently Asked Questions (FAQ)
Q1: What is the Megger MTR105 used for?
A. The Megger MTR105 rotating machine tester is used for offline testing of motors and generators. It combines insulation resistance testing, low resistance testing, motor rotation testing and LCR measurement in one hand-held instrument.
Q2: What is the difference between the MTR105 and MTR105X?
A. The MTR105X rotating machine tester includes Bluetooth connectivity for wireless data streaming and reporting using Megger CertSuite™ Asset software.
Q3: Can the Megger MTR105 perform insulation resistance testing?
A. Yes. The MTR105 rotating machine tester supports insulation testing from 50 V to 1000 V, including variable voltage testing from 10 V to 999 V.
Q4: Does the MTR105 support PI and DAR testing?
A. Yes. The Megger MTR105 includes Polarisation Index (PI), Dielectric Absorption Ratio (DAR) and timed insulation testing functions.
Q5: Can the MTR105 test motor winding resistance?
A. Yes. The MTR105 rotating machine tester includes DLRO four-wire Kelvin low resistance testing for accurate winding resistance measurement.
Q6: Is the Megger MTR105 suitable for industrial environments?
A. Yes. The MTR105 rotating machine tester features a rugged IP54-rated housing designed for demanding industrial and field environments.
Q7: Does the MTR105 include temperature compensation?
A. Yes. The instrument supports temperature measurement and temperature compensation during insulation resistance and low resistance testing.
Q8: Can the Megger MTR105 store test results?
A. Yes. The MTR105 rotating machine tester can store test results for up to 256 motors.
How is a rotating machine tester used in industry?
A rotating machine tester is used in industry to check the condition, safety and performance of motors and generators. Maintenance engineers use instruments like the Megger MTR105 rotating machine tester to identify electrical problems before they cause unexpected downtime or equipment failure.
In manufacturing plants, rotating machine testers are used during planned maintenance programmes to monitor motor health. Engineers can check insulation resistance, winding resistance and motor rotation to help detect worn insulation, damaged windings or incorrect phase connections.
In motor repair workshops, the MTR105 rotating machine tester is commonly used before and after repairs. This helps confirm that repaired motors are safe and working correctly before they are returned to service.
Utilities, water treatment plants and oil and gas facilities also rely on rotating machine testers to keep important motors and pumps operating safely and efficiently. In transport industries such as rail and marine, rotating machine testing helps improve reliability and reduce the risk of equipment breakdowns.
The Megger MTR105 rotating machine tester helps engineers complete these tests quickly using one portable instrument, making maintenance work more efficient and helping reduce costly downtime.