3
Leroy-Somer - Liquid-Cooled Motors - LC Series - 5370 en - 2019.09 / c
IMnity
®
- LC Liquid-Cooled 3-Phase Induction Motors
Contents
GENERAL
Introduction ...........................................................................4
Quality Commitment .............................................................5
Directive and Standards Relating to Motor Efciency............6
Standards and Approvals ......................................................7
Regulations in the Main Countries ......................................10
ENVIRONMENT
Denition of “Index of Protection” ........................................11
Environmental Limitations...................................................12
Impregnation and Enhanced Protection ..............................13
Heating ...............................................................................14
External Finish ....................................................................15
Interference Suppression and Protection of People ............16
CONSTRUCTION
Bearings and Bearing Life ...................................................17
Lubrication and Maintenance of Bearings ...........................18
OPERATION
Duty Cycle - Denitions .......................................................19
Supply Voltage ....................................................................22
Insulation Class - Temperature Rise and
Thermal Reserve ................................................................24
Starting Times and Starting Current ....................................25
Power - Torque - Efciency - Power Factor (Cos ɸ) .............26
Noise Level .........................................................................29
Weighted Sound Level [dB(A) .............................................30
Vibrations ............................................................................31
Performance .......................................................................33
Starting Methods for Induction Motors ................................34
Braking ...............................................................................38
Use with a Variable Speed Drive .........................................40
Operation as an Asynchronous Generator ..........................47
Special Environments .........................................................49
TECHNICAL CHARACTERISTICS
Designation.........................................................................50
Identication .......................................................................51
Description of an LC Motor basic conception ......................53
Cooling ...............................................................................54
Standard Equipment ...........................................................56
Optional Features ...............................................................57
Handling .............................................................................58
ELECTRICAL CHARACTERISTICS
IE3 Mains Supply ................................................................59
IE3 Variable Speed Drive Supply ........................................61
Terminal Block Connection .................................................63
MECHANICAL CHARACTERISTICS
Mounting Arrangements......................................................64
Terminal Box Connection ....................................................65
Dimensions of Shaft Extensions .........................................69
Dimensions of Foot Mounted IM 1001 (IM B3) ....................70
Dimensions of Foot and Flange Mounted IM 2001
(IM B35) ............................................................................. 71
Dimensions of Flange Mounted IM 3001 (IM B5)
IM 3011 (IMV1) ...................................................................72
Dimensions - Water Connecting Flange ..............................73
Bearings and Lubrication ....................................................74
Axial Loads .........................................................................75
Radial Loads .......................................................................77
APPENDIX .........................................................................83
Congurator ........................................................................91