3GZF500730-70 rev. C RU-EN 01-2016 | ABB Motors and Generators EN – 27
Low voltage Motors for explosive atmospheres according
to Customs union technical regulation
Installation, operation, maintenance and safety manual
Table of Contents
1. Introduction ..................................................................................................................................................29
1.1 Customs union technical regulation ....................................................................................................29
1.2 Validity ................................................................................................................................................29
1.3 Conformity .........................................................................................................................................29
2. Safety considerations ..................................................................................................................................30
2.1 Motors in Group IIC and Group III ......................................................................................................30
2.2 Motors in group II ..............................................................................................................................30
3. Handling ........................................................................................................................................................31
3.1 Reception check ................................................................................................................................31
3.2 Transportation and storage ................................................................................................................31
3.3 Lifting .................................................................................................................................................31
3.4 Motor weight ......................................................................................................................................31
4. Installation and commissioning ..................................................................................................................32
4.1 General ..............................................................................................................................................32
4.2 Motors with other than ball bearings ...................................................................................................32
4.3 Insulation resistance check .................................................................................................................32
4.4 Foundation .........................................................................................................................................32
4.5 Balancing and fitting coupling halves and pulleys................................................................................33
4.6 Mounting and alignment of the motor .................................................................................................33
4.7 Radial forces and belt drives ...............................................................................................................33
4.8 Motors with drain plugs for condensation ...........................................................................................33
4.9 Cabling and electrical connections .....................................................................................................33
4.9.1 Flameproof motors ..............................................................................................................34
4.9.2 Dust ignition protection motors Ex t .....................................................................................34
4.9.3 Connections for different starting methods ..........................................................................35
4.9.4 Connections of auxiliaries ....................................................................................................35
4.10 Terminals and direction of rotation .....................................................................................................35
4.11 Protection against overload and stalling ..............................................................................................35
5. Operation .....................................................................................................................................................36
5.1 General ..............................................................................................................................................36
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