OPERATION AND MAINTENANCE MANUAL
MAC QM MOTORS
PAGE: 20
CODE: CTT42 EDITION: 01 RELEASE: JULY 2016
Subject to technical changes without prior notice
3.5
General specifications
3.5.1
Motor code
MAC QM series motors are coded as follows:
MAC
QM
315
M
A51
Motor type
Series
Size
Length
Winding
MAC
Asynchronous Motor
for frequency
Converter
QM
IP23 – IC17
Radial fan
315
Shaft height
(mm)
S
M
L
P
Defines the rated
motor speed
Table 13: MAC-Q motor codes
3.5.2
Ambient conditions
In their standard version, MAC QM motors are not suitable for working in saline or corrosive atmospheres or for installation
outdoors.
3.5.3
Duty
The rated power assigned for continuous service (S1 duty type) assumes an ambient temperature between -20º and +40ºC and
altitudes of up to 1000 m.
If the working conditions are different from those above, a derating factor (K1) must be applied to the rated torque and power
(See table below):
Altitude
Temperature
30ºC
40ºC
50ºC
55ºC
1000 [m]
1
1
0.92
0.86
2000 [m]
1
0.93
0.85
0.77
3000 [m]
0.93
0.85
0.76
0.69
4000 [m]
0.86
0.78
0.67
0.6
Table 14: Declassing factors
If the motor does not work in continuous service (S1), but rather in an S2 Short-time duty type, a multiplication factor must be
applied (K2) to the torque and power specified on the nameplate (S1 Service) to determine the torque available for this service.
The K2 factor is determined by the duration of the service according to the graph below.
Summary of Contents for MAC QM
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