3.3 Installation
3.3.1 Machine design
Machines of this series are low-voltage three-phase induction drives with a cylindrical shaft
extension and keyway. They can be supplied as single-speed machines with dierent eciency
classes or as pole changing machines for several speeds.
In the case of machines with feet (IM B3 type of construction), the feet are cast or bolted on.
It is possible to change over the bolted on mounting feet on the machine enclosure, for
example to change the terminal box position; only authorized retrot partners may carry out
this work.
Measures for alignment and mounting (Page57)
3.3.2 Regulations
The regulations and standards used as the basis for designing and testing this machine are
stamped on the rating plate. The machine design basically complies with the following
standards:
Table 3-1 Applicable general regulations
Feature Standard EAC
Dimensioning and operating behavior EN/IEC60034-1 GOSTIEC60034-1
Procedure for determining the losses and the eciency of rotating electrical
machines and inspections
EN/IEC60034-2-1
EN/IEC60034-2-2
EN/IEC60034-2-3
GOSTIEC60034-2-1
GOSTIEC60034-2-2
GOSTIEC60034-2-3
Degree of protection EN/IEC60034-5 GOSTIEC60034-5
Cooling EN/IEC60034-6 GOSTRIEC60034-6
Type of construction EN/IEC60034-7 GOSTRIEC60034-7
Terminal designations and direction of rotation EN/IEC60034-8 GOST26772
Noise emission EN/IEC60034-9 GOSTIEC60034-9
Integrated thermal protection EN/IEC60034-11 GOST27888
Starting characteristics of rotating electrical machines EN/IEC60034-12 GOSTIEC60034-12
Vibration severity grades EN/IEC60034-14 GOSTIEC60034-14
Eciency classication of three-phase squirrel-cage induction motors EN/
IEC60034-30-1
GOSTIEC60034-30-1
IEC standard voltages IEC60038 GOSTRIEC61800-1
3.3.3 Cooling and ventilation
The machines of this series are three-phase induction machines with a closed primary (internal)
cooling circuit and an open secondary cooling circuit (surface cooling). The surface cooling
varies depending on the version.
Description
3.3Installation
1LE5, 1PC4 shaft heights 280 ... 355
Operating Instructions, 11/2022, A5E41454666A 27