If the temperature reading is more than 30 minutes old, a red
time stamp will be displayed in the secondary field above the
temperature reading.
4.5 3 Phase (3P)
1. Connect the test leads to the MTR105.
1.1. Press the Information ( ) button to view the lead set
up diagram.
NOTE: when the diagram is displayed a test cannot be
performed. Press Information ( ) button to return to the test
screen.
2. Connect the test leads to the unit under test.
NOTE: The connection is for illustrative purposes only
When performing phase to phase measurements, the star or
delta configuration has to be disconnected.
3. Select the required insulation test voltage.
4. The display will show the selected voltage, in this case 500 V.
Insulation Resistance Tests
18 www.megger.com
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