Rockwell Automation 1503 OEM Starter Frame Components Installation Manual - Manual (Page 47)

Chapter
4
Commissioning
Hi-Pot and Megger Test
Insulation integrity should be checked before energizing electrical
equipment. Use a high voltage AC insulation tester or a Megger for this
test. If a Megger is used, a 5000 volt type is recommended.
Exercise caution when performing high voltage tests on
the equipment. Failure to do so may result in electric
shock causing severe burns, injury or death.
To avoid shock hazards, lock out incoming power before
working on the equipment. Verify with a hot stick or
appropriate voltage measuring device that all circuits are
voltage free. Failure to do so may result in severe burns,
injury or death.
Insulation can be tested from phase to phase and from phase to ground.
The recommended level for AC Hi-Pot testing is (2 X V
LL
) volts, where V
LL
is the rated line-to-line voltage of the power system. The leakage current
must be less than 20 mA. Record the result for future comparison testing.
If a Megger is used, it should indicate 50 megohms or greater if the unit is
isolated from the line and the motor. If the unit is connected to a motor, the
Megger should indicate 5 megohms or greater.
Vacuum Bottle Integrity Test
Refer to the following publications for the procedure to test vacuum bottle
integrity of the Bulletin 1502 contactor:
• 400A – Publication 1502-UM050_EN-P ( Series D)
• 400A – Publication 1502-UM052_EN-P (Series E)
• 800A – Publication 1502-UM051_EN-P (Series E)
These user manuals contain detailed information on installation, adjustment
and maintenance for this product.
1503-IN050E-EN-P – June 2013
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