Megger MIT510, User Manual

INSTRUMENT CONTROLS AND INDICATORS

Power On/Off button:

The instrument will only turn on if this button is pressed, held and then

released after the display responds. 

If pressed and released before the display responds the instrument will

not turn on. 

If pressed and held continuously the instrument will not turn on.

This sequence is a safety feature to prevent the instrument inadvertently

turning on. 

To power the instrument down at any time, press 

Power On/Off

again.

The instrument will also power down after 10 minutes of inactivity.

Once powered, the display will first show 

Ini

while it does a self-check.

When 

Ini

disappears, the instrument is ready for use.

V

▲

and V

▼

buttons:

Using these buttons one of five test voltages can be selected: 250 V, 

500 V, 1000 V, 2500 V or 5000 V. The selected voltage is shown on the

display.

If there is an external voltage greater than 50 V on the test leads the

display will show this voltage instead. The instrument will not do a test if

this is the case.

After a test has started, the display shows the voltage on the test leads

only. If the test voltage is changed during a test, the new test voltage will

be displayed briefly before the display again shows the voltage on the test

leads.

After a test has been stopped, the display shows the test voltage selected

once the load has discharged to below 50 V.

TEST button:

A test will only start if this button is pressed, held and then released as

soon as the red HV LED lights. When the test starts the red HV LED flashes

and the display flashes the HV warning symbols.

If pressed and released before red LED shows a test will not start. 

If pressed and held continuously the instrument will immediately stop the

test.

This sequence is a safety feature to prevent the instrument inadvertently

starting a test. 

If an external voltage greater than 50 V is present on the test leads, this

will be shown by the red HV LED and the display HV warning symbols

flashing. Testing will be disabled until this voltage falls below 50 V.

Testing will stop if the 

TEST

button is pressed again.

After a test has finished, the instrument will discharge the load which may

take some time. Always check the load has been discharged before

touching the test leads.

Ω

/I button:

Pressing this button toggles the digital display between the insulation

resistance and current. 

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