Technical Catalogue - Low Voltage

01 INSPIRED PEOPLE 02 INSPIRED SOLUTIONS 03 THREE-PHASE SQUIRREL CAGE INDUCTION MOTORS 03   MOTOR APPLICATIONS 04 STANDARD CONFIGURATION 04   RATING PLATES 04   STANDARDS 05   EUROPEAN DIRECTIVES 05   ENERGY SAVING 06   EFFICIENCY CLASSES 07 TECHNICAL CHARACTERISTICS 07   PROTECTIVE TREATMENTS 08   MOUNTING AND POSITIONS 09   IC CODE - COOLING (IEC 60034-6) 10    MATERIALS 13    BEARINGS 15    BEARINGS FOR STANDARD MOTORS 17    AXIAL FORCES - HORIZONTAL MOUNTING 18    AXIAL FORCES - VERTICAL MOUNTING 20   RADIAL FORCES - HORIZONTAL MOUNTING 21  

23   TERMINAL BOXES - DIMENSIONS 26   AUXILIARY TERMINAL BOXES 26   GROUNDING 27   CONDENSATION DRAINAGE 27   ANTICONDENSATION HEATERS 27   THERMAL PROTECTIONS 28   CONNECTION DIAGRAMS 30   STARTING 30   STARTING RESPONSE 30   TYPE OF STARTING 33   MOTORS FOR VARIABLE SPEED APPLICATIONS 34   MOTORS FOR FORCED VENTILATION 34   INSTALLATION ≤ 1000 M A.S.L. 34   DERATINGS 35   EFFICIENCY AND POWER FACTOR 36   TOLERANCES FOR ELECTROMECHANICAL CHARACTERISTICS 36   VOLTAGE AND FREQUENCY 37   OPTIONS AND CONFIGURATIONS 39   MECHANICAL TOLERANCES 39   TAPPED HOLES IN THE SHAF

65 B1C - B2C DIMENSIONS - CAST IRON 67 B1C - B2C DIMENSIONS - CAST IRON 68 B3C DIMENSIONS - CAST IRON

INSPIRED PEOPLE our vision To become the global market leader of electric rotating machines in all our core markets. OUR MISSION our mission is to aid the sustainable growth of our customers’ businesses. We will provide innovative solutions inspired by relentless efforts to understand our customers’ needs and their specific applications. We will leverage our extensive technical knowledge, product performance and service to increase the competitiveness, efficiency and productivity of our partners worldwide.

INSPIRED SOLUTIONS Marelli Motori is a leading designer and manufacturer of generators and electric motors. Nowadays the company enjoys worldwide brand recognition thanks to our extended sales, distribution and service networks across four continents and two manufacturing facilities, in Italy and Malaysia. M A R ELLI MOTOR I OPERATES I N S I X CORE I NDUST RI E S Power generation Generators up to 14000 kVA Hydropower Asynchronous generators up to 3000 kW Synchronous generators up to 9000 kVA Industrial motors Motors up to 10000 kW Marine Generators up to 12500 kVA Motors up to 10000 kW marellimotori.com...

THREE-PHASE SQUIRREL CAGE INDUCTION MOTORS MOTOR APPLICATIONS • A1C, A2C, A3C motors are made of aluminium frame, available from 63 to 180 frame size. B1C, B2C, B3C motors are made of cast iron frame, available from 63 to 355 frame size. Our motor industrial applications include: • water pumping and treatments; manufacturing processes; food and beverage processing industry; Design flexibility Our flexibility even reaches final assembly, a point at which customers are still able to adapt a design to meet the requirements of their specific application. Once in the field, our products can be equipped...

All motors in standard configuration are supplied with stainless steel identification plates. Motors subject to efficiency classification “IE” have the correspondent band label on the nameplate. All motors supplied with regreasing systems have regreasing data shown on the main nameplate.

Marelli Motori motors fully comply with the following directives. CE mark declaration of conformity All low voltage products described in this catalogue are marked CE and are in conformity with the requirements of the applicable Directive. With references to the Machinery Directive, the above mentioned product is to be considered as a component. ENERGY SAVING European standards for motors efficiency In order to harmonise the energy consumption regulations concerning the reduction of CO2 emissions and the impact of industrial operations on the environment, the International Electrotechnical Commission...

The new IEC 60034-30-1 standard defines worldwide the following efficiency classes of single-speed three-phase and cage-induction motors in the 0,12-1000 kW power range. Reference values at 50 Hz are shown in the following table.

TECHNICAL CHARACTERISTICS Continuous duty S1 The type of duty is indicated by the symbols S1-S9 as defined in the IEC 60034-1 standard. Duty type S1 refers to operation at a constant load maintained for sufficient time to allow the machine to reach thermal equilibrium. Insulation class F Class F insulation systems are used in Marelli Motori motors. This is the most common industry requirement today. The class F insulation system allows a temperature rise of 105K, measured by the resistance variation method, and a maximum temperature value of 155°C. Insulation class H allows a temperature rise...

Motors are supplied according to type of construction. B3, B5, B35, B14, B34 and V1 motors are compatible with mounting arrangements shown in the table below and defined in the IEC-60034-7 standard. Nameplates are marked with the type of construction mentioned above. Key • Standard x Contact Marelli Motori marellimotori.com (1) Motors with feet (2) Flanged motor: unthreaded through holes (3) Fl

The designation of cooling method is given by IC (International Cooling) code, according to the IEC 60034-6 standard. Self ventilating motor. Enclosed machine. Externally finned. External shaft-mounted fan. Motor with assisted ventilation. Enclosed machine. Externally finned. Independent external fan mounted inside the fan cover. Motor wilh external ventilation. Enclosed machine. Externally finned. Ventilation provided by air flowing from the driven system.