Baker Instrument Company PP24 User Manual page 16

DC Testing/DR Unit
PP24. Also, very accurate Megohm and PI measurements can be made with the DR which
has a very tightly regulated high voltage power supply regardless of the quality of the
incoming power.
To perform Megohm/PI/HiPot testing with the PP24, ensure the two units are connected &
powered as described above, follow these instructions:
1) Connect the single red test lead to the winding to be tested and at least one black
lead to the motor frame. A good practice is to connect all three black leads to the
motor frame.
2) Set the Function knob on the PP24 to 100uA/div
3) After insuring the testing environment is safe, press and hold the Test button.
4) Smoothly turn the output control knob up to the required test voltage. The output
voltage and leakage current will be displayed on the screen of the DR host. Do not
12/7/2009 | 71-026 V2
PP24
Fig 2-4: Single lead connection
Fig 2-5: Function switch at 100 µA/Div
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