MarelliMotori Series Generators Marine MJBM – MJHM

Introduction

MarelliMotori, as one of the global leaders in the electric motor and generator industry, has developed the MJBM – MJHM marine generator series specifically designed to meet the unique needs of the maritime industry. By combining cutting-edge technology and years of experience, these generators offer reliable performance, high efficiency, and exceptional durability, making them the ideal choice for a wide range of vessel types.

What is MarelliMotori Series Generators Marine MJBM – MJHM?

MarelliMotori Series Generators Marine MJBM – MJHM is a type of electric generator specifically designed to meet the needs of the maritime industry. These generators are known for their reliability, durability, and high efficiency, making them a popular choice for various types of vessels, ranging from small vessels to large ships.

Main Characteristics of MJBM – MJHM Series

  • Flexible Output Power: The MJBM – MJHM series offers a wide range of output power options to accommodate diverse energy requirements from small vessels to large ships.
  • Marin Quality: Specifically designed for harsh marine environments, these generators feature a protective coating that is resistant to corrosion and vibration, as well as an efficient cooling system to ensure optimal performance in all conditions.
  • High Energy Efficiency: With advanced electric motor technology, MJBM – MJHM generators are able to achieve high energy efficiency, reducing fuel consumption and lowering operational costs.
  • High Customization: MarelliMotori offers flexibility in terms of customization, allowing generators to be tailored to the specific needs of each vessel, including voltage, frequency, and type of cooling.
  • High Reliability: High-quality components and rigorous manufacturing processes ensure the reliability and long service life of MJBM – MJHM generators.
  • Large Output Power: MJBM – MJHM generators are capable of producing large electrical power to meet the ship’s energy needs, including for propulsion, electrical systems, and other onboard equipment.
  • Customization: These generators can be customized to each vessel’s specific needs, including voltage, frequency, and type of cooling.

    Competitive Advantage

    • Optimal Performance in Extreme Conditions: MJBM – MJHM generators are designed to operate optimally in challenging marine conditions, such as severe weather, high waves and extreme temperatures.
    • Low Emissions: With high energy efficiency, this generator produces low emissions, supporting environmental conservation efforts.
    • Easy Maintenance: The modular design and good accessibility make maintenance and repair easy.
    • High Security: Advanced safety features, such as protection against overload and over-temperature, ensure safe and reliable operation.

Typical Applications

  • Commercial Ship: Container ships, tankers, bulk carriers.
  • Passenger Ship: Ferry, cruise ship.
  • Offshore Vessels: Oil and gas production platforms.
  • Naval Vessels: Warships, patrol boats.
  • Support Vessels: Survey vessels, research vessels.
MarelliMotori Series Generators Marine MJBM - MJHM
MarelliMotori Series Generators Marine MJBM – MJHM

Technical Features

SERIES: MJBM (Low Voltage) / MJHM (Medium Voltage)
POWER: Up to 12000 kVA
VOLTAGE: Up to 15000 V
FRAME: 315 – 1250
POLES: 4 to 12
FREQUENCY: 50, 60 Hz or variable speed
PROTECTION DEGREE (IP): 23 (up to 44 on request)
COOLING METHOD (IC): 01
AMBIENT TEMPERATURE: -15°C to +60°C
AVR: E-Vo up to 630 frame; D-Vo Light above (Low Voltage) / D-Vo Light (Medium Voltage)
BEARINGS: antifriction or sleeve (on request)
APPLICATIONS: Auxiliary Generator, Shaft Generator, Hybrid Machine, Variable speed generator, Off-shore, PTO-PTI system
STANDARDS: IEC 60034-1 – BS 4999-5000 – NEMA MG 1.32
CERTIFICATIONS: Marine Survey Certificate

Main Options:

  • Flanged shaft for direct coupling with engine flywheel (in case of single bearing solution)
  • Reinforced construction for high linear vibrations
  • Inlet and outlet filters for increased protection degree up to IP44
  • Raised feet to match engine baseframe dimensions (B20 – IM1101)
  • Dedicated current transformer installed on neutral point (differential protection and measurement)
  • Insulated bearing and earthing brush
  • Excitation/overboosting PMG mounted on generator
  • Arrangement for rotor earth fault protection 64R
  • Arrangement for vibration sensors

Selection and Installation Process

Proper generator selection is critical to ensure optimal performance of the vessel. Some factors to consider include:

  • Power Requirements: Determine the electrical power required to operate all equipment on the vessel.
  • Available Space: Ensure the size of the generator matches the available space in the engine room.
  • Operating Conditions: Consider the environmental conditions in which the generator will operate, such as temperature, humidity, and vibration.

The generator installation process should be carried out by an experienced technician to ensure proper and safe installation.

Maintenance and Care

To maintain the optimal performance of the MJBM – MJHM generator, it is necessary to perform regular maintenance which includes:

  • Visual Inspection: Regularly inspect the physical condition of the generator, including for leaks, damage, or signs of wear.
  • Performance Check: Perform periodic performance testing to ensure the generator is operating according to specifications.
  • Oil Changes: Change the lubricating oil periodically according to the specified schedule.
  • Cleaning: Clean the generator regularly from dust and dirt to prevent overheating.

Conclusion

MarelliMotori Series Generators Marine MJBM – MJHM is an excellent solution to meet the ship’s energy needs. With high reliability, efficiency, and flexibility, these generators are able to provide stable and reliable power for various maritime applications.

Source: www.marellim

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