China Megger MTR105 Rotating machine tester Suppliers, Product

The MTR105 is a dedicated rotating motor tester that combines Megger's proven insulation resistance (IR) expertise with advanced low resistance, capacitance, inductance, and rotation testing capabilities in a single handheld instrument. It provides a complete picture of your motor's health, allowing you to accurately and reliably assess windings, connections, and overall condition. Designed for production, service, and maintenance teams, the MTR105 helps you make fast, reliable decisions throughout your asset's lifecycle.

Product Description

The Megger MTR105 is a dedicated handheld tester for rotating machines, which is highly praised for its comprehensive functions, high accuracy, and portability.
Product Features
Multifunctional Integration
Integrates a variety of test functions, including insulation resistance testing with polarization index (PI), dielectric absorption ratio (DAR), and timed tests, as well as temperature compensation. Also features DLRO four-wire Kelvin low-resistance testing, inductance and capacitance testing, motor rotation direction testing, three-phase power supply rotation testing, continuity, and diode testing functions.
High-definition Display
Equipped with a full LCD color screen with user-adjustable backlight, clearly displaying test values and trends for convenient reading and analysis.
Excellent Safety Performance
Features automatic live circuit detection to warn users of live circuits and test prohibition situations (except rotation direction measurement). Built-in protection for fuse failures and fast detection circuits reduces potential instrument damage.
Strong Environmental Adaptability
IP54 dustproof and waterproof rating, suitable for harsh industrial environments. Operating temperature range is -10°C to 50°C, and operates normally at altitudes up to 3000 meters.
Convenient Data Management
Stores up to 256 motor test results with automatic date and time stamps. Data can be directly downloaded to a USB drive for easy reporting and record-keeping.
Applications
Production Testing
Applicable to the production testing of newly manufactured motors and generators to ensure quality meets standard criteria.
Maintenance and Repair Testing
Used to test repaired and refurbished motors and generators, verifying the effectiveness of repairs and normal equipment operation.
On-site Monitoring
Designed for off-line monitoring and maintenance of motors in use across utilities, industrial setups, OEMs, service, and transportation.
Technical Specifications
Parameter Range Accuracy Key Notes
Insulation Resistance 0.1 kΩ – 200 GΩ ±2% ± 2 digits ± 0.2% per GΩ (at 1000V test voltage) Supports 50V–1000V test voltage; includes PI/DAR
DLRO Four-wire Kelvin Low Resistance 1 mΩ – 10 Ω ±0.25% of reading ± 10 digits Uses 200mA DC test current; 0.01mΩ resolution
Continuity 0.01 Ω – 1 MΩ - 0–99.9Ω: ±3% ± 2 digits
- 100Ω–500kΩ: ±5% ± 2 digits
For checking conductor continuity
Capacitance 0.1 nF – 1 mF ±5.0% ± 2 digits (1nF – 10μF range) Measures winding or component capacitance
Inductance 2 mH – 1 H ±(0.7% + (Lx/10000)% + 5 digits) (at 1kHz, for 1H) Test accuracy varies with frequency
Operating Temperature -10°C – 50°C N/A Suitable for industrial environments
Altitude Rating Up to 3000 meters N/A Stable performance at high elevations
Protection Level IP54 N/A Dustproof and water-resistant
Data Storage Up to 256 test results N/A Auto date/time stamping for each record
Dimensions 228 × 105 × 75 mm N/A Compact handheld design
Weight 0.93 kg N/A Lightweight for on-site portability
Models & Delivery Information
Models: Megger MTR105 Rotating machine tester. From insulation tests to directional rotation checks, the MTR105 is an all-in-one solution for your motor testing needs.
Dimension
228 × 105 × 75 mm
Weight
0.93 kg
Battery Parameter
Six 1.5V alkaline batteries

Delivery information typically includes delivery times, shipping methods, packaging, etc., which may vary depending on the seller and the location of purchase.

Manuals & Resources
Megger MTR105 Rotating machine tester

Megger MTR105 Rotating machine tester datasheet.pdf

Download Datasheet
Frequently Asked Questions
Q What testing capabilities does the Megger MTR105 offer for motor testing?
The MTR105 is an all-in-one handheld tester that provides insulation resistance testing (with PI, DAR, and temperature compensation), DLRO four-wire Kelvin low-resistance, inductance, capacitance, continuity, diode testing, motor rotation direction, and three-phase supply rotation testing.
Q What is the measurement range for insulation resistance and the test voltage?
It supports a test voltage ranging from 50V to 1000V, with an insulation resistance measurement range from 0.1 kΩ up to 200 GΩ.
Q Does the Megger MTR105 store test data?
Yes, the device can store up to 256 motor test results. Each result features an automatic date and time stamp, and you can download the data directly to a USB drive.
Q What are the environmental ratings and operating limits?
The instrument has an IP54 protection level (dustproof and water-resistant), operates in temperatures from -10°C to 50°C, and is rated for operation at altitudes up to 3000 meters.
Q What are the dimensions, weight, and battery requirements of the tester?
The tester dimensions are 228 × 105 × 75 mm, it weighs 0.93 kg, and it is powered by six 1.5V alkaline batteries.

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