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Marelli Motori S.p.A.
Cogeneration Selection guide

Cogeneration Selection guide

Product catalog summary

Vision and Mission
Our vision is to become the global market leader in electric rotating machines across all core markets. Our mission focuses on supporting sustainable growth for our customers by providing innovative solutions tailored to their specific needs, leveraging technical knowledge, product performance, and service to enhance competitiveness and productivity globally.

Generators Overview
The document outlines various generator types, including ODP (Open Drip Proof) and TEWAC (Totally Enclosed Water to Air Cooled) generators, categorized by models such as MJH, MJHR, MJB, and MJR. These generators are designed for different applications, including internal combustion engines and steam & gas turbines, with power ratings and frame sizes specified for each model.

Product Map and Generator Range
The product map details the compatibility of different generator models with internal combustion engines and steam & gas turbines. The generator range is extensive, with power ratings up to 12,500 kVA and voltages up to 15,000 V, available in various frame sizes and pole configurations.

ODP Generators: MJH
The MJH series offers medium voltage generators at 50 Hz and 60 Hz, with power ratings ranging from 380 kVA to 12,500 kVA. These generators are suitable for continuous duty with high efficiency and are available in 4, 6, and 8 pole configurations. They are primarily used with internal combustion engines.

TEWAC Generators: MJHR
The MJHR series provides medium voltage generators at 50 Hz and 60 Hz, with power ratings up to 11,000 kVA. These generators are designed for use with internal combustion engines and steam & gas turbines, offering high efficiency and various cooling options. They are available in 4, 6, and 8 pole configurations.

Selection Table and Contacts
A selection table is provided to assist in choosing the appropriate generator model based on specific requirements. Contact information is available for further inquiries and support.

Overview: The document provides a detailed selection guide for Marelli Motori's cogeneration generators, focusing on medium and high voltage models (MJHR) and low voltage models (MJB) across different frequencies (50 Hz and 60 Hz) and pole configurations (4, 6, and 8 poles).

Specifications: The document lists various generator models with their power ratings in kVA, efficiency percentages, moment of inertia, and weight. It also specifies temperature rise and ambient temperature conditions for continuous duty operations.

Medium Voltage Generators (MJHR): These are categorized by frequency and pole count. Key specifications include power ratings at different temperature conditions, efficiency, and physical characteristics like weight and moment of inertia. For certain models, power availability requires direct contact with Marelli Motori.

High Voltage Generators (MJHR): Similar to medium voltage, these are detailed by frequency and pole count. The document provides power ratings, efficiency, and other operational parameters. Again, some models require contacting Marelli Motori for specific power availability.

Low Voltage Generators (MJB): These are detailed for both 50 Hz and 60 Hz operations. The document includes power ratings for continuous and standby duty, efficiency, and physical specifications. It highlights the main applications for internal combustion engines and provides cooling and IP protection details.

Recommendations: For power sizes not listed, or for specific power availability, the document advises contacting Marelli Motori directly.

Overview: The document is a selection guide for Marelli Motori's TEWAC generators, focusing on low voltage models operating at 50 Hz and 60 Hz. It provides detailed specifications for various models, including power ratings, efficiency, moment of inertia, and weight.

Specifications: The guide lists multiple models of MJR generators, categorized by the number of poles (4, 6, and 8) and frequency (50 Hz and 60 Hz). Each model's power rating is provided in kVA, along with efficiency percentages, moment of inertia in kgm², and weight in kg. The document also specifies temperature rise and ambient temperature conditions.

Key Features: The MJR generators are designed for use with internal combustion engines, steam, and gas turbines. They offer power ratings up to 6,000 kVA and voltages up to 1,000 V. Cooling options include IC 81W and IC 86W, with IP ratings available up to IP 56.

AVR Selection: The document includes a selection table for Automatic Voltage Regulators (AVRs), detailing both analogue and digital options. It specifies generator frame sizes, AVR supply types, voltage sensing capabilities, and standard protections.

Contact Information: The document provides contact details for Marelli Motori's offices worldwide, including locations in Italy, Germany, the UK, the Middle East, Asia Pacific, South Africa, Spain, and the USA.

Catalog excerpts

Inspired solutions Selection guide

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Cogeneration • Selection guide 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.

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Cogeneration • Selection guide Internal combustion engines TEWAC MJHR Generator model MJH MJHR MJB MJR ODP - Open Drip Proof TEWAC - Totally Enclosed Water to Air Cooled ODP - Open Drip Proof TEWAC - Totally Enclosed Water to Air Cooled

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IP 23. Available up to IP 44 with filters Main applications Internal combustion engines MJH - MEDIUM VOLTAGE - 50 Hz - 4 POLES POWER RATING [kVA] @ 50Hz Continuous duty Temperature rise/Ambient temperature [C°] For other power/sizes not included above, please contact Marelli Motori

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Cogeneration • Selection guide MJH - MEDIUM VOLTAGE - 50 Hz - 6 POLES POWER RATING [kVA] @ 50Hz TYPE Temperature rise/Ambient temperature [C°] Continuous duty 105/40 For available power please contact Marelli Motori For other power/sizes not included above, please contact Marelli Motori

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MJH - MEDIUM VOLTAGE - 50 Hz - 8 POLES POWER RATING [kVA] @ 50Hz TYPE Temperature rise/Ambient temperature [C°] Continuous duty 105/40 For available power please contact Marelli Motori For other power/sizes not included above, please contact Marelli Motori

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Cogeneration • Selection guide MJH - MEDIUM VOLTAGE - 60 Hz - 4 POLES POWER RATING [kVA] @ 60Hz Temperature rise/Ambient temperature [C°] Continuous duty For other power/sizes not included above, please contact Marelli Motori

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MJH - MEDIUM VOLTAGE - 60 Hz - 6 POLES POWER RATING [kVA] @ 60Hz TYPE Temperature rise/Ambient temperature [C°] Continuous duty 105/40 For available power please contact Marelli Motori For other power/sizes not included above, please contact Marelli Motori

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Cogeneration • Selection guide MJH - MEDIUM VOLTAGE - 60 Hz - 8 POLES POWER RATING [kVA] @ 60Hz TYPE Temperature rise/Ambient temperature [C°] Continuous duty 105/40 For available power please contact Marelli Motori 6 For other power/sizes not included above, please contact Marelli Motori

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MJH - HIGH VOLTAGE - 50 Hz - 4 POLES POWER RATING [kVA] @ 50Hz Continuous duty Temperature rise/Ambient temperature [C°] For other power/sizes not included above, please contact Marelli Motori MJH - HIGH VOLTAGE - 50 Hz - 6 POLES LEADS For available power please contact Marelli Motori For other power/sizes not included above, please contact Marelli Motori

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Cogeneration • Selection guide MJH - HIGH VOLTAGE - 50 Hz - 8 POLES POWER RATING [kVA] @ 50Hz TYPE Temperature rise/Ambient temperature [C°] Continuous duty 105/40 For available power please contact Marelli Motori For other power/sizes not included above, please contact Marelli Motori

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MJH - HIGH VOLTAGE - 60 Hz - 4 POLES POWER RATING [kVA] @ 60Hz Continuous duty Temperature rise/Ambient temperature [C°] For other power/sizes not included above, please contact Marelli Motori MJH - HIGH VOLTAGE - 60 Hz - 6 POLES TYPE For available power please contact Marelli Motori For other power/sizes not included above, please contact Marelli Motori

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Cogeneration • Selection guide MJH - HIGH VOLTAGE - 60 Hz - 8 POLES POWER RATING [kVA] @ 60Hz TYPE Temperature rise/Ambient temperature [C°] Continuous duty 105/40 For available power please contact Marelli Motori For other power/sizes not included above, please contact Marelli Motori

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TEWAC generators Main applications Internal combustion engines, Steam & GAS Turbines MJHR - MEDIUM VOLTAGE - 50 Hz - 4 POLES POWER RATING [kVA] @ 50Hz Continuous duty Temperature rise/Ambient temperature [C°] For other power/sizes not included above, please contact Marelli Motori

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Cogeneration • Selection guide MJHR - MEDIUM VOLTAGE - 50 Hz - 6 POLES POWER RATING [kVA] @ 50Hz TYPE Temperature rise/Ambient temperature [C°] Continuous duty 105/40 For available power please contact Marelli Motori 6 For other power/sizes not included above, please contact Marelli Motori

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MJHR - MEDIUM VOLTAGE - 50 Hz - 8 POLES POWER RATING [kVA] @ 50Hz TYPE Temperature rise/Ambient temperature [C°] Continuous duty 105/40 For available power please contact Marelli Motori For other power/sizes not included above, please contact Marelli Motori

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Cogeneration • Selection guide TEWAC generators MJHR - MEDIUM VOLTAGE - 60 Hz - 4 POLES POWER RATING [kVA] @ 60Hz Continuous duty Temperature rise/Ambient temperature [C°] For other power/sizes not included above, please contact Marelli Motori

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MJHR - MEDIUM VOLTAGE - 60 Hz - 6 POLES POWER RATING [kVA] @ 60Hz TYPE Temperature rise/Ambient temperature [C°] Continuous duty 105/40 For available power please contact Marelli Motori 6 For other power/sizes not included above, please contact Marelli Motori

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Cogeneration • Selection guide MJHR - MEDIUM VOLTAGE - 60 Hz - 8 POLES POWER RATING [kVA] @ 60Hz TYPE Temperature rise/Ambient temperature [C°] Continuous duty 105/40 For available power please contact Marelli Motori For other power/sizes not included above, please contact Marelli Motori

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TEWAC generators MJHR - HIGH VOLTAGE - 50 Hz - 4 POLES POWER RATING [kVA] @ 50Hz Continuous duty Temperature rise/Ambient temperature [C°] For other power/sizes not included above, please contact Marelli Motori MJHR - HIGH VOLTAGE - 50 Hz - 6 POLES TYPE For available power please contact Marelli Motori For other power/sizes not included above, please contact Marelli Motori

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Cogeneration • Selection guide MJHR - HIGH VOLTAGE - 50 Hz - 8 POLES POWER RATING [kVA] @ 50Hz TYPE Temperature rise/Ambient temperature [C°] Continuous duty 105/40 For available power please contact Marelli Motori For other power/sizes not included above, please contact Marelli Motori

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