Megger MTR105 User Manual

Baker Instruments
MTR105
Rotating Machine Tester
User Guide

Megger MTR105 Specifications

General

Frequency Range	15 Hz to 400 Hz
IP Rating	IP54
Test Current	200 mA
Insulation Test Voltages	50 V, 100 V, 250 V, 500 V, 1000 V
Voltage Range	0 V to 600 V AC/DC
Capacitance Range	1 nF to 10 μF
Temperature Range	-10 °C to 50 °C
Accuracy (Low Resistance)	± 0.5 %
Display	LCD
Power Supply	Rechargeable battery or mains adapter
Operating Temperature	-10 °C to +50 °C
Storage Temperature	-20 °C to 60 °C
Dimensions	270 mm x 170 mm x 100 mm

Summary

Safety Warnings and Precautions

Essential Safety Warnings

Important safety warnings that must be read and understood before using the instrument.

Introduction to MTR105

Instrument Controls and Layout

Identifies and describes the main instrument controls and their functions.

Instrument Display Overview

Rotary Switch Functions

Explains the different positions and functions of the instrument's rotary selection switch.

Instrument Connections and Leads

Instrument Setup and Power

Warnings and Exception Conditions

Powering the Instrument

Instructions for powering the instrument on and off, including battery replacement.

Insulation Resistance Tests

Insulation Test Options

Lists and describes the available insulation resistance test options like IR, PI, DAR, T(s), and 3P.

Two Terminal and Guard Connection

Performing Insulation Resistance (IR) Test

Step-by-step guide on how to connect leads, select voltage, and perform an IR test.

3 Phase Insulation Resistance Test

Guides on performing insulation resistance tests on three-phase systems.

Polarization Index (PI) Test

Instructions for performing the Polarization Index test to assess insulation quality over time.

Timed Insulation Test (T(s))

Dielectric Absorption Ratio (DAR) Test

Variable Voltage Insulation Testing

Voltmeter Functions

True RMS (TRMS) Voltage Measurement

Explains how to measure True RMS voltage, including AC and DC components.

AC and DC Voltage Measurement

Continuity Testing

Uni-directional Continuity Test

Bi-directional Continuity Test

DLRO Digital Low Resistance Ohmmeter

Manual Single Direction DLRO Test

Steps to perform a manual DLRO test in a single direction.

Auto Single Direction DLRO Test

How to perform an automated DLRO test in a single direction.

Manual Bi-Direction DLRO Test

Instructions for performing a manual DLRO test in both directions.

Auto Bi-Direction DLRO Test

How to perform an automated DLRO test in both directions.

Direction of Motor Rotation

Performing Motor Rotation Direction Test

Step-by-step instructions for connecting leads and rotating the motor to determine rotation direction.

Inductance, Capacitance, Resistance (LCR)

Auto LCR Measurement

How to perform an auto LCR measurement, determining inductance, capacitance, or resistance.

Capacitance or Inductance Measurement

Data Management and Storage

Creating and Using Asset IDs

Exporting Test Results to USB

Steps for connecting a USB drive and exporting saved test results.

Error and Warning Conditions

Fuse Failure Notification

Battery Low Warning

Instrument Settings Configuration

IR Test Settings Configuration

General Settings Configuration

Maintenance and Battery Care

Battery Status and Handling

Information on battery condition indicators, charging, and warnings for low battery.

Battery and Fuse Replacement

Detailed instructions on how to replace battery cells and fuses, including cautions.

Technical Specifications

Insulation Resistance and Continuity Specifications

Voltmeter and LCR Specifications

Calibration, Repair, and Warranty

Return Procedure for Service