Safety; Insulation Resistance Measurements - ABB AMA Series Manual

***Following paragraph for rotor type: Permanent magnet

4.3.2 Safety

***Following bullet for rotor type: Permanent magnet rotor

4.3.3 Insulation resistance measurements

3BFP 000 050 R0101 REV E
The electrical installation should be thoroughly planned before taking any action. The
connection diagrams received with the machine have to be studied before starting the
installation work. It is important to verify that the supply voltage and the frequency are the same
as the values indicated on the rating plate of the machine.
The network voltage and frequency should be within given limits according to the applicable
standard. Note rating plate markings and connection diagram in the terminal box. For additional
information, see the machine performance data sheet.
NOTE: Prior to installation work, it is important to check that the incoming cables are
separated from the supply network, and that the cables are connected to protective
earth.
NOTE: Check all rating plate data, especially the voltage and winding connection.
Machines are intended only for variable speed drives, i.e. to be supplied by frequency
converters. The frequency converter must be designed to operate with a permanent magnet
synchronous machine. If there is uncertainty concerning the compatibility of the permanent
magnet synchronous machine and the frequency converter, please contact ABB Sales Office.
Electrical work must be carried out only by skilled persons. The following safety rules must be
applied:
• De-energize all equipment, including auxiliary equipment
• Provide safeguard against re-energizing the equipment
• Verify that all parts are isolated from their respective supply
• Connect all parts to protective earth and short the circuits
• Cover or provide barriers against live parts in the surrounding area
• If the secondary circuit of the current transformer is extended, make sure that it does not
become open-circuited in use
• The permanent magnet synchronous machine produces voltage when the shaft is rotating.
Prevent rotation of the shaft before opening the terminal box. Do not open or touch the
unprotected terminals while the shaft of the machine is rotating. Follow Safety Instructions
at the beginning of the manual.
Before a machine is started up for the first time, after a long period of standstill or within the
scope of general maintenance work, the insulation resistance of the machine must be measured,
see Chapter 7.6.4 Insulation resistance test.
Manual for Induction Motors and Generators
Mechanical and Electrical Connections - 39