Vascat MAC QM, Operation And Maintenance Manual

Page: 16 / 56

OPERATION AND MAINTENANCE MANUAL
MAC QM MOTORS
PAGE: 16
CODE: CTT42 EDITION: 01 RELEASE: JULY 2016
Subject to technical changes without prior notice
3.3.4 Cooling Methods
The cooling methods used in electrical machines are regulated by the IEC/EN 60034-6 standard. In order to identify the cooling
method used in each motor, it is also given a code similar to the IP protection rating. There are two types of code: complete code
(e.g. IC9A7W7) and short code (e.g. IC97W). Both begin with the initials IC (International Cooling).
The table below shows the most common cooling methods for MAC motors:
SHORT
CODE
COMPLETE
CODE
EN60034-6 DESCRIPTION
IC00 IC0A0
Free circulation using the surrounding medium by means of free
convection
IC01 IC0A1
Self-ventilated with integral fan cooling,
Cooling air is blown through the motor by a fan mounted on the shaft
IC06 IC0A6
Separate ventilation with radial fitted fan unit,
Cooling air is blown through the motor by a separately excited fan
motor. The inlet side may be equipped with an air filter.
IC16 IC1A6
Circulation via pipe or duct,
Cooling medium is supplied by external part
IC17 IC1A7
Single pipe ventilated,
Cooling air is blown across the motor through the pipe connection with
a separate customer provided external blower fan and discharges on
the other side to open space.
IC37 IC3A7
Double pipe ventilated,
Cooling air is blown across the motor through a pipe connecting by
means of a separate customer provided external blower fan and
discharges on the other side’s pipe connecting.
IC410 IC4A1A0
Totally-enclosed nonventilated,
Cooling without using a fan, only by natural ventilation and radiation on
the totally enclosed motor surface.
IC411 IC4A1A1
Totally-enclosed fan-cooled,
Cooling air is blown over the totally enclosed motor surface by a fan
mounted on the shaft.
IC416 IC4A1A6
External surface cooling,
Cooling air is blown over the totally enclosed motor surface by an
separately excited fan motor.
IC97W IC9A7W7
Cooling using an independent heat exchanger by means of liquid
coolant or remote fluid
Table 7: Cooling methods