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- IMfinity® Liquid cooled motors - LC series
IMfinity® Liquid cooled motors - LC series
IMfinity® Liquid cooled motors - LC series
Nidec Leroy-Somer's catalog introduces the LC series of liquid-cooled, three-phase induction motors, designed for high efficiency and variable speed operation. These motors comply with IE3 efficiency standards and are available in frame sizes 315 to 500, with power ratings from 150 to 1500 kW.
The LC series motors are part of the IMfinity® platform, offering reduced noise levels, compact design, and high protection levels (IP55 and optional IP56). They are suitable for constant torque applications across the speed range from 0 to 50 Hz.
Nidec Leroy-Somer employs a quality management system certified to ISO 9001:2015 and ISO 14001:2015 standards, focusing on continuous improvement and customer satisfaction.
The motors adhere to international standards such as IEC 60034-30-1 for efficiency classification and IEC 60034-2-1 for efficiency measurement. The European ErP Directive mandates high-efficiency motors, with IE3 class required for certain power ratings since 2015.
The motors are designed with environmental limitations, including specific water inlet temperature requirements for water-cooled models, and are evaluated for their environmental impact throughout their lifecycle.
The catalog details the construction, operation, and technical characteristics of the motors, including cooling methods, standard and optional features, and handling instructions.
LC series motors are ideal for marine propulsion, test benches, pumps, compressors, plastic industries, hydraulic turbines, and heavy industries like iron, steel, and cement.
The LC series motors by Nidec Leroy-Somer offer premium efficiency and adaptability for various industrial applications, supported by robust quality assurance and compliance with international standards.
Various international standards are referenced, including IEC and ISO standards, ensuring products meet safety and performance criteria across different regions.
Products are marked to indicate compliance with safety and energy regulations in different countries, including CE, CSA, UL, and EAC marks.
The document details IP ratings, which classify the degree of protection against solid objects and liquids.
Motors are designed to operate in ambient temperatures between -16°C and +40°C and at altitudes below 1000 meters.
Humidity is measured using the wet and dry bulb thermometer method, with drain holes provided to remove moisture.
The document discusses the impact of temperature and humidity on motor performance and suggests tropicalization for high humidity environments.
Space heaters may be used in severe climates to maintain motor temperature and prevent condensation.
Surface protection is defined by ISO 12944, specifying paint systems for corrosion protection.
The document addresses electromagnetic interference and compliance with EMC directives.
Motors comply with various directives, including the EMC Directive 2014/30/CE, Low Voltage Directive 2014/35/UE, and Machinery Directive 2006/42/EC.
The document mentions load ratings for bearings, indicating the importance of understanding static load ratings for motor components.
The document outlines specifications for bearings, focusing on dynamic and static load ratings.
The lifetime of a bearing is measured in revolutions or operating hours before fatigue appears.
The role of lubricants is to prevent direct contact between moving metal parts and protect against wear and corrosion.
The document describes various duty cycles as per IEC 60034-1 standards.
The document references IEC standards for supply voltage, specifying European reference voltages and tolerances.
The motors are designed for use on a European power supply of 400 V ±10% at 50 Hz.
Motor performance remains unaffected if voltage and frequency variations are of the same polarity.
When using 400 V - 50 Hz motors on 460 V - 60 Hz supplies, efficiency increases by 0.5-1.5%.
The motors use a class F insulation system, allowing for a temperature rise of 105 K.
Permissible starting times are defined in relation to starting current.
Output power is linked to torque and speed, while active power is related to apparent and reactive power.
For motors operating in intermittent duty cycles, the rated power is calculated based on the power absorbed during the cycle.
Derating involves calculating the starting time, cumulative starting time per hour, and energy dissipation during starts and operation.
The document outlines the correct dimensioning of motors, emphasizing the importance of verifying the relationship between power, torque, and thermal constants.
The equivalent thermal constant is crucial for predicting machine cooling time.
Noise emitted by rotating machines is measured in decibels (dB) using filters A, B, and C.
Various thermal protection devices are described, including bimetallic strips and thermistors.
Five starting methods for induction motors are detailed: Direct On Line (D.O.L.), star/delta, soft starting with auto-transformer, resistors, and electronic starting.
The document outlines the features of liquid-cooled 3-phase induction motors, highlighting their compatibility with PTC or PT 100 for protection.
The document describes various starting methods for induction motors, including Direct-On-Line (D.O.L.), star-delta, soft starting with auto transformers, and resistors.
Braking methods include reverse-current braking and D.C. injection braking.
The document categorizes applications into centrifugal machines, constant torque applications, constant power applications, and 4-quadrant machines.
The motor can operate as an asynchronous generator when the load becomes a driving load, exceeding synchronous speed.
Guidelines for using motors with variable speed drives are provided, including compliance with EMC standards.
The document provides technical details and operational guidelines for Nidec Leroy-Somer's LC Series liquid-cooled 3-phase induction motors.
The rotor of an asynchronous generator retains residual magnetism, which can cause a brief current peak and overtorque when connected to an A.C. supply.
To limit current in lines and transformers, asynchronous generators can be compensated using capacitor banks.
Protection devices are categorized into grid-related and generator-related.
In isolated networks, reactive energy must be supplied to both the generator and user loads.
The document outlines solutions for harsh environments, such as marine applications.
The document details the technical specifications of LC motors, including frame size, speed, efficiency class, and cooling methods.
LC motors use a built-in heat exchanger for cooling, with water as the secondary fluid.
LC motors come with a breathable membrane to manage condensation and a water leak detector using optical technology.
- Operation on a Drive: Features include reinforced winding insulation, insulated ball bearings, ground ring, and insulated encoder.
- Mechanical Adaptation: Options for terminal box placement, roller bearings, shaft extensions, and balancing.
- Motor Protection: Offers IP56 or IP65 protection, thermal sensors, space heaters, and class H winding insulation.
- Miscellaneous: Compliance with cURus standards, optional power ratings, and special fittings for water inlets and outlets.
- Motors over 25 kg require suitable handling equipment.
- Efficiency and Performance: Detailed tables provide efficiency, power factor, and other performance metrics for various motor types and configurations.
- Terminal Block Connection: Standard motors come with wiring diagrams.
- Additional features available upon request include special fittings, brakes, and other customizations.
Efficiency in electrical machines is the ratio of output power to power absorbed, with losses accounting for the difference.
The document provides a comprehensive list of units and their conversions for various parameters in electricity, thermodynamics, noise, vibration, and mechanics.
Mechanical and electrical formulae are detailed, including those for calculating force, moment, power, acceleration time, and moment of inertia.
IEC 60034-1 specifies tolerances for electromechanical characteristics like efficiency, slip, torque, and noise.
Catalog excerpts
IMfinity® Liquid cooled motors - LC series 3-phase induction motors IE3 Premium efficiency Variable and fixed speed Frame size 315 to 500 150 to 1500 kW
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The LC induction motors in this catalog are designed to achieve very high efficiency levels and operate at variable speed. This catalog contains technical information about motors in the IE3 efficiency class (Premium efficiency) which can be used on an A.C. supply and also on a drive. On request, Nidec Leroy-Somer is able to offer IE4 motor solutions. All the motors in this catalog can be used at variable speed depending on the specified conditions. To be eligible for efficiency class IE3, the water inlet temperature for water-cooled motors must be between 0°C and 32°C.
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IMfinity® - LC Liquid-Cooled 3-Phase Induction Motors Contents GENERAL TECHNICAL CHARACTERISTICS MECHANICAL CHARACTERISTICS Insulation Class - Temperature Rise and Dimensions of Foot and Flange Mounted IM 2001 Dimensions of Flange Mounted IM 3001 (IM B5) Nidec Leroy-Somer - Liquid-Cooled Motors - LC Series - 5370 en - 2020.09 / d
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IMfinity® - LC Liquid-Cooled 3-Phase Induction Motors General Introduction In this catalog, Nidec Leroy-Somer describes high-efficiency liquid-cooled induction motors. These motors have been designed to incorporate the latest European standards, and can satisfy most of industry's demands. They are par excellence the leading products on the Nidec Leroy-Somer liquid-cooled IMfinity® platform. Platform IMfinity® Non-IE Aluminum IP55 Frame size 56 to 225 mm 2, 4 and 6 poles 0.09 to 45 kW IE2 - IE3 Cast iron IP55 Frame size 80 to 450 mm 2, 4 and 6 poles 0.75 to 900 kW IE3 IP23 Frame size 225 to 450...
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IMfinity® - LC Liquid-Cooled 3-Phase Induction Motors General Quality Assurance Nidec Leroy-Somer's quality management system is based on: - Tight control of procedures right from the initial sales offering through to delivery to the customer, including the design process, manufacturing startup and production. - A total quality policy based on making continuous progress in improving operational procedures, involving all departments in the company in order to give customer satisfaction as regards delivery times, conformity and cost. - Indicators used to monitor process performance. - Corrective...
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IMfinity® - LC Liquid-Cooled 3-Phase Induction Motors General Directive and Standards Relating to Motor Efficiency There have been a number of changes to the standards and new standards created in recent years. They mainly concern motor efficiency and their scope includes measurement methods and motor classification. Regulations are gradually being implemented, both nationally and internationally, in many countries in order to promote the use of high-efficiency motors (Europe, USA, Canada, Brazil, Australia, New Zealand, Korea, China, Israel, etc.). The new generation of Premium efficiency three-phase...
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IMfinity® - LC Liquid-Cooled 3-Phase Induction Motors General Standards and Approvals LIST OF STANDARDS QUOTED IN THIS DOCUMENT Reference IEC 60034-1 Rotating electrical machines: rating and performance. Rotating electrical machines: methods for determining losses and efficiency from tests (additional losses added as a fixed percentage). Rotating electrical machines: methods for determining losses and efficiency from tests (additional losses added as a measured percentage). Rotating electrical machines: classification of degrees of protection provided by casings of rotating machines. Rotating...
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IMfinity® - LC Liquid-Cooled 3-Phase Induction Motors General Standards and Approvals MAIN PRODUCT MARKINGS WORLDWIDE Special markings are in place all over the world. They primarily concern product compliance with safety standards for users in force in countries. Some markings or labels only apply to energy regulations. One country can have two different markings: one for safety and one for energy. This marking is mandatory in the European Economic Community market. It means that the product complies with all relevant directives. If the product does not comply with an applicable directive, it...
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IMfinity® - LC Liquid-Cooled 3-Phase Induction Motors Environment Definition of “Index of Protection” (IP) INGRESS PROTECTION OF ELECTRICAL EQUIPMENT ENCLOSURES 2nd number: In 1st number: accordance with IEC 60034-5 - EN 60034-5 (IP) - IEC 62262 (IK) Protection against solid objects Protected against solid objects larger than 50 mm (e.g. accidental contact with the hand) Protected against solid objects larger than 12 mm (e.g. a finger) Protected against rain falling at up to 60° from the vertical Protected against solid objects larger than 1 mm (e.g. thin tools, small wires) Protected against...
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IMfinity® - LC Liquid-Cooled 3-Phase Induction Motors Environment Environmental Limitations NORMAL OPERATING CONDITIONS According to IEC 60034-1, motors can operate in the following normal conditions: In temperate climates, relative humidity is generally between 50 and 70%. For the relationship between relative humidity and motor impregnation, especially where humidity and temperature are high, see table on next page. • ambient temperature between -16°C and +40°C Special operating conditions can be discussed on request. The ambient temperature must not be less than +5°C for water-cooled motors....
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IMfinity® - LC Liquid-Cooled 3-Phase Induction Motors Environment Impregnation and Enhanced Protection NORMAL ATMOSPHERIC PRESSURE (750 MM HG) The selection table below can be used to find the method of manufacture best suited to particular environments in which temperature and relative humidity show large degrees of variation (see relative and absolute humidity calculation method, on preceding page). The winding protection is generally described by the term "tropicalization". For high humidity environments, we recommend that the windings are pre-heated (see next page). Relative humidity Stainless...
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