Low Voltage Motors for Hazardous Areas
Installation, operation, maintenance and safety manual
Table of Contents
Low Voltage Motors for Hazardous Areas ...........................................................................3
1. Introduction ......................................................................................................................5
1.1
1.2
Validity .......................................................................................................................5
1.3
Conformity ..................................................................................................................5
1.4
Preliminary Checks ....................................................................................................6
2. Handling .............................................................................................................................6
2.1
Reception check ........................................................................................................6
2.2
2.3
Lifting .........................................................................................................................6
2.4
Motor weight ..............................................................................................................7
3.1
General ......................................................................................................................7
3.2
3.3
Foundation .................................................................................................................8
3.4
3.5
3.6
3.7
3.8
3.8.1
Flameproof motors .........................................................................................9
3.8.2
3.8.3
3.8.4
3.9
4. Operation .........................................................................................................................11
4.1
Use ...........................................................................................................................11
4.2
Cooling .....................................................................................................................11
4.3
Safety considerations ...............................................................................................11
5.1
Introduction ..............................................................................................................12
5.2
5.3
Winding insulation ....................................................................................................12
5.3.1
5.3.2
5.3.3
5.3.4
5.4
5.5
Bearing currents .......................................................................................................13
5.5.1
5.5.2
5.6
5.7
Operating speed ......................................................................................................14
5.8
5.8.1
General ........................................................................................................14
5.8.2
5.8.3
5.8.4
Short time overloads ....................................................................................14
5.9
Rating plates ............................................................................................................14
ABB/Low Voltage Motors/ Ex manual 01-2007
Page
3 - EN