SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.

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