11371757 Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical
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2.4
ENVIRONMENTAL CONDITIONS
The motor was designed according to the specific
environmental conditions (temperature and altitude) of
your application, and are described on the nameplate and
in the datasheet of the motor.
ATTENTION
For the use of water-cooled motors in
ambient temperatures below +5°C, antifreeze
additives must be added to the water.
2.5
OPERATING CONDITIONS
In order for the product warranty to be valid, the motor
must be operated according to nominal data indicated on
its nameplate, observing all applicable standards and
information contained in this manual.
2.6
VOLTAGE AND FREQUENCY
It is very important to ensure a proper power supply for
the motor. The conductors and the entire protection
system must ensure the quality of the power supply at the
motor terminals within the limits, in accordance with the
IEC60034-1 standard:
Voltage: may vary within a range of ±10% of the rated
value;
Frequency: may vary within a range of -5% to +3% of
the rated value.
Figure 2.1: Voltage and frequency variation limits
Figure 2.1 legend:
1.
Voltage
2.
Zone A
3.
Frequency
4.
Zone B (outside zone A)
5.
Voltage with rated characteristics
The motor must be able to perform its main function
continuously in Zone A, but it may not fully meet its
performance characteristics at rated voltage and
frequency (refer to the point with rated characteristics in
Figure 2.1), when it may present some deviations. The
temperature rises may be above those at rated voltage
and frequency.
The motor must be able to perform its main function in
Zone B, but regarding the performance characteristics at
rated voltage and frequency, it may present deviations
greater than those of Zone A. The temperature rises may
be higher than those observed at rated voltage and
frequency, and they will most likely be higher than those in
Zone A.
Prolonged operation in the periphery of Zone B is not
recommended.
