Siemens 1LA8 Operating Instructions

6.4.1 Inserting the cable into the GT640 terminal box....................................................................68
6.4.2 Inserting the cable into the 1XB16... terminal box with cable gland ......................................68
6.4.3 Inserting the cable into the 1XB.. terminal box with ring seal.................................................69
6.4.4 Laying cables.........................................................................................................................70
6.4.5 Connecting cables with cable lugs.........................................................................................71
6.4.6 Connection without cable lugs...............................................................................................71
6.4.7 Use of aluminum conductors..................................................................................................73
6.4.8 Using single-stranded cables.................................................................................................73
6.4.9 Internal equipotential bonding................................................................................................73
6.4.10 Stepless mating face for sealing in the terminal box cover (not for GT640)..........................74
6.4.11 Minimum air clearances.........................................................................................................74
6.4.12 Finishing connection work......................................................................................................75
6.5 Connecting the auxiliary circuits.............................................................................................75
6.5.1 Selecting cables.....................................................................................................................75
6.5.2 Bringing cables into the auxiliary terminal box and routing them...........................................75
6.5.3 Connecting temperature monitoring for the stator winding....................................................76
6.5.4 Terminating the connection work (auxiliary circuit)................................................................77
6.5.5 Converter operation...............................................................................................................77
6.5.5.1 Operation on a converter with a low pulse frequency............................................................77
6.5.5.2 Maximum peak voltage at the motor terminals......................................................................78
6.5.5.3 Reducing bearing currents.....................................................................................................78
6.5.5.4 Converter operation on a grounded network..........................................................................80
7 Start-up.......................................................................................................................................................81
7.1 Checks to be carried out prior to commissioning ..................................................................81
7.2 Measuring the insulation resistance before commissioning...................................................82
7.3 Greasing the roller bearings prior to commissioning..............................................................83
7.4 Setpoint values for monitoring the bearing temperature........................................................84
7.5 Set values for monitoring the winding temperature................................................................84
7.6 Test run..................................................................................................................................85
7.7 De-energizing.........................................................................................................................86
8 Operation....................................................................................................................................................87
8.1 Safety guidelines in operation................................................................................................87
8.2 Switching off the anti-condensation heating...........................................................................88
8.3 Switching on the machine......................................................................................................89
8.4 Regreasing roller bearings.....................................................................................................89
8.5 Switching on again after an emergency switching-off............................................................89
8.6 Stoppages..............................................................................................................................89
8.6.1 Avoidance of condensation or formation of condensation within the machine.......................90
8.6.2 Avoidance of damage to roller bearings during stoppages....................................................90
8.6.3 Shaft grounding brushes (option)...........................................................................................91
8.6.4 Measurement of the insulation resistance after an extended stoppage.................................91
8.7 Decommissioning the machine..............................................................................................92
8.8 Re-commissioning the machine.............................................................................................92
Table of contents
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2016 7

Siemens 1LA8 Specifications

General

Brand	Siemens
Model	1LA8
Category	Engine
Language	English