MEGGER MTR105 Datasheet & Stock

Megger MTR105 Offers

With a robust handheld design, this rotating machine tester comes equipped with the test abilities of proven IR test instruments adding DLRO four-wire Kelvin low resistance, inductance, and capacitance tests to give a versatile motor tester.

Additionally this instrument incorporates temperature measurement and compensation (for IR tests), motor direction of rotation plus supply phase rotation tests.

Features

Full color graphic display
Three 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
CAT III 600 V up to 9842.5' (3000 m)
Environmental protection to IP54


Applications

Utilities: electrical power generation, water, oil/gas
Industrial: production line/factory maintenance teams, HVAC/R field engineers
OEM: motors/generators
Service: motor repair workshops
Transport: rail, electric vehicles, marine, and more
Production tests for new manufactured motors and generators
Test repaired and refurbished motors and generators
Monitoring and maintenance of in service motors (off line) in the field


Safety

Designed to be exceptionally safe to use. The fast detecting circuitry reduces the likelihood of damage to the instrument if accidentally connected to live circuits or across phases.

Meets the international requirements of IEC61010 and IEC61557
Live circuit detection and test inhibit on all measurements with user notification (except for direction of rotation measurements).
User selectable insulation test terminal lockout voltage 25 V, 30 V, 50 V, 75 V (default is 50 V).
Detection and inhibit functions when the protection fuse has failed.
Suitable for use on CAT III applications and supply voltages to 600 V.


Insulation Resistance Tests

Resistance range 100 Ω up to 200 GΩ
Supports PI, DAR, timed and temperature compensation
Stabilised insulation test voltage accurate to -0% +2% ±2 V, which provides a more accurate test voltage without the risk of over-voltage damage to circuits or components. The output voltage is maintained between 0 and 2% throughout the test range
Where a nonstandard test voltage is required, a variable range allows the exact test voltage to be selected from 10 V up to 999 V and is subject to the same stabilised output control
Dedicated buzzer button either ON, VISUAL or OFF
Adjustable buzzer for minimum resistance limit (0.5 up to 1000 MΩ)
Buzzer sounds on test pass


Voltmeter

Measures ac 10 mV up to 1000 V; DC 0 to 1000 V; True RMS (15 up to 400 Hz)
Three phase supply and direction of rotation


Continuity (Resistance) Tets

Single automatic resistance range from 0.01 Ω to 1.0 MΩ
Automatic test current selection uses the preferred test current for the load resistance under test (200 mA up to 4 Ω)
Bi-directional tests option automatically reverses the current without reconnecting leads
Lead resistance compensation (NULL) operates up to 10 Ω of resistance
Dedicated buzzer switch either ON, VISUAL or OFF
Adjustable buzzer for maximum resistance limit (1 Ω to 200 Ω in 12 steps)
Buzzer sounds on test pass


DLRO Four Wire Kelvin Low Resistance

Automatic resistance range from 1 mΩ up to 10 Ω
Selectable auto or manual test
Bi-direction or single direction
Bi-directional tests option automatically reverses the current without reconnecting leads
200 mA test current


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 Hz or 1000 Hz. In AUTO mode, the MTR105 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.


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.