Three Phase Squirrel Cage Induction Motors
56Pages

Marine Motors Three Phase Squirrel Cage Induction Motors MA - A4 - BB - B4 - B5 SERIES 63 - 400 SIZES MarelliMotori ASI.CT.033.2

MarelliMotori is part of the FKI group of companies serving the world in the sectors of power generation, transmission and distribution. With over one hundred years of experience, MarelliMotori is a name synonymous with Quality and Manufacturing Excellence in the production of rotating machines. MarelliMotori is recognised as a leading supplier to the Industrial, Petrochemical and Marine sectors, offering a complete range of standard and custom solutions for low and medium voltage motors demanded by our customers. Our ability to offer flexible and rapid solutions is an integral part of...

CONTENTS Page ESSENTIAL AND NON-ESSENTIAL SERVICE 5 BALANCING AND VIBRATION GRADES 7 BEARINGS AND LUBRICATION INTERVALS 8 BEARINGS OF MARINE MOTORS IN STANDARD CONFIGURATION 8 TERMINAL BOXES AND CABLE ENTRY 9 VOLTAGE, FREQUENCY AND CONNECTIONS 11 TEMPERATURE RISE AND AMBIENT TEMPERATURE 11 EFFICIENCY AND POWER FACTOR 14 TECHNICAL DATA - ALUMINIUM MOTORS 15 4/8 POLES - 4/6 POLES, FAN AND PUMP APPLICATIONS 17 4/8 POLES - 4/6 POLES, FAN AND PUMP APPLICATIONS 20 4/8 POLES - 4/6 POLES, FAN AND PUMP APPLICATIONS 23 4/8 POLES - 4/6 POLES, FAN AND PUMP APPLICATIONS 26 TECHNICAL DATA-CAST IRON...

CONTENTS Page 4/8 POLES - 4/6 POLES, FAN AND PUMP APPLICATIONS 40 4/8 POLES - 4/6 POLES, FAN AND PUMP APPLICATIONS 44 DIMENSIONS - ALUMINIUM MOTORS 45 DIMENSIONS - CAST IRON MOTORS 49 Marelli Motori

International Standard Title IEC 60034 - 5 Classifications of degrees of protection (IP code) IEC 60034 - 6 Methods of cooling (IC code) IEC 60034 - 7 Classification of type of construction and mounting arrangement (IM code) IEC 60034 - 8 Terminal markings and direction of rotation IEC 60034 - 11 Built-in thermal protection IEC 60034 - 12 Starting performance of rotating electrical machines ESSENTIAL AND NON-ESSENTIAL SERVICE Onboard equipment is classified by Naval Registers considering the importance of its specific service. Two services are defined: The former identifies all those...

Mountings and positions are defined by the following codes according to IEC 60034-7: B: Horizontal - V: Vertical Mounting code Mounting category Type of shaft extension Mounting arrangement Frame Size Frame Size 1. Motors with feet 2. Flanged Motor: unthreaded through holes 3. Flanged Motor: threaded dead holes !: Cast Iron Motors 63 frame without anti-rain canopy For other mountings refer to IEC 60034-7.

The components of MarelliMotori aluminium and cast iron series motors are made of the materials described in the following tables. N-end shield Aluminium Motors N-end shield Cast Iron Motors Cast Iron Cast Iron Cast Iron Cast Iron Cast Iron Cast Iron Cast Iron Cast Iron BALANCING AND VIBRATION GRADES The motors are dynamically balanced with a half key applied to the shaft extension, in accordance with standard IEC 60034-14, to vibration severity grade normal (N) in standard configuration. The following table indicates the maximum rms vibration speed values (vrms) with respect to the various...

BEARINGS AND LUBRICATION INTERVALS The theoretical lifetime of bearings, Lioh according to ISO 281/1 Standard, of horizontal construction motors in standard configuration, without external forces (radial and/or axial) is in excess of 50,000 hours. The lifetime of bearings is determined by multiple factors and specifically by: the lifetime of the grease, the environmental conditions, the external loads and vibrations. The cast iron and aluminium motors <132 frame size mount respectively double sealed and double screen deep-groove ball bearings greased for life. The corresponding grease life...

MarelliMotori marine motors are mechanically designed to be coupled to the driven load with an elastic or flexible coupling, without any axial and/or radial force trasmitted to the motor shaft. For possible external axial and/or radial loads contact MarelliMotori. The motor protection against the penetration of dust and liquid is identified by a code: the degree of protection - IP55, where the first number in code means: 5 - Ingress of dust is not totally prevented but dust does not enter in sufficient quantity to interfere with satisfactory operation of the The second number in the code...

CONDENSATION DRAINAGE Motors installed outdoors or used for intermittent work in environments with high humidity levels can be provided with holes for condensation drainage. Motors from 100 to 400 frame size have water drainage holes as standard. In order to assure the correct positioning of the holes the mounting position of the motors must be specified. PROTECTIVE TREATMENTS EXTERNAL SURFACES Standard painting process is F96831 as described in the following table. The painting thickness ensures an optimum resistance against corrosive environments. A special painting according to F96819...

VOLTAGE, FREQUENCY AND CONNECTIONS The electrical data tables given in the present catalogue refer to motors designed to operate under one of the following power supplies. Stator windings connection of single speed motors is specified in the following table. Double speed motors have two separate windings, both star connected. For different connections and or different supplies contact MarelliMotori. Maximum Total Harmonic Distortion (THD) level admitted on supplied voltages is 10%. Higher harmonic distortion levels cause an increase in the temperature rise of the motors. In those cases the...

The output ratings listed in this catalogue refer to continuous duty S1, rated voltage and frequency, ambient temperature between -20°C and +45°C. In different environmental conditions the outputs ratings can be obtained by applying the derating factors given in Permissible outputs of motors operating in S2 or S6 duty-type can be increased by the following multiplying factors: Aluminium Motors Cast Iron Motors Short time duty type Frame size Short time duty type Aluminium Motors Continuous operation periodic type Frame size Cast Iron Motors Continuous operation periodic type Contact...