Chapter 6 Maintenance and Inspection
This chapter describes the precautions and procedures for the maintenance and inspection of
the inverter.
6.1 Precautions for Maintenance and Inspection .......... 6-1
6.2 Daily and Periodic Inspections ................................. 6-2
6.3 Ground Resistance Test with a Megger .................... 6-3
6.4 Withstand Voltage Test ............................................ 6-3
6.5 Method of Checking the Inverter and Converter
Circuits ..................................................................... 6-4
6.6 DC-Bus Capacitor Life Curve ..................................... 6-5
6.7 Output of Life Warning ............................................. 6-5
6.8 Methods of Measuring the Input/Output
Voltages, Current, and Power................................... 6-6
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