Manual for Induction Motors and Generators
Safety Instructions -
7
3BFP 000 050 R0101 REV E
Starting and Re-starting
•
The maximum number of the sequential starts has been declared in machine’s technical
documents.
•
The new starting sequence is allowed after the machine has cooled to the ambient
temperature (-> cold starts) or to operating temperature (-> warm starts).
Earthing and Equipotentialing
•
Check before starting that all earthing and equipotentialing cables are effectively
connected.
•
Do not remove any earthing or equipotentialing cables, which has been assembled by the
manufacturer.
Clearances, creepage distances and separations
•
Do not make any removal or adjustment in terminal boxes, which could decrease
clearances or creepage distances between any parts.
•
Do not install any new equipment to terminal boxes without asking for advises from ABB
Oy.
•
Be sure that air gap between rotor and stator is measured after any maintenance for the
rotor or bearings. The air gap shall be the same in any point between stator and rotor.
•
Centralize the fan to the center of the fanhood or the air guide after any maintenance. The
clearance shall be at least 1% of the maximum diameter of the fan and in accordance with
standards.
Connections in terminal boxes
•
All connections in main terminal boxes must be made with Ex-approved connectors,
which are delivered with the machine by the manufacturer. In other cases ask an advice
from ABB Oy.
•
All connections, in auxiliary terminal boxes, as marked
intrinsically safe circuits (Ex i or
EEx i) must be connected to proper safety barriers.
Space heaters
•
If an anti-condensation heater, without self-regulation, is turned on immediately after the
motor is shut down, take suitable measures to control the inside motor housing
temperature. The anti-condensation heaters can only operate within a temperature-
controlled environment.
