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Summary of Contents for Nidec Leroy-Somer AVRs R251
- Page 1 110 0V R251 50Hz KNEE 47.5Hz LAM OFF SPECIAL KNEE 65Hz LAM OFF KNEE 57Hz 60Hz LAM OFF R251 AVRs Installation and maintenance...
- Page 2 Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs This manual concerns the alternator AVR which you have just purchased. We wish to draw your attention to the contents of this maintenance manual. SAFETY MEASURES Before using your machine for the first time, it is important to read the whole of this installation and maintenance manual.
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Page 3: Table Of Contents
Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs SUMMARY 1 - SUPPLY ..........................4 1.1 - SHUNT excitation system ....................4 2 - R251 AVR ...........................5 2.1 - Characteristics ......................5 2.2 - U/F fonction and LAM ....................5 2.3 - R251 AVR option ...................... -
Page 4: Supply
Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs 1 - SUPPLY excitation alternator does not have a short circuit capacity. 1.1 - SHUNT excitation system The R251 is a R250 with a specific excita- The SHUNT excitation alternator is auto- tion ceiling = 4 A during 30 s (set for the excited with a R251 voltage regulator. -
Page 5: R251 Avr
Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs 2 - R251 AVR The threshhold position and LAM fonction settings are done with the jumper. 2.1 - Characteristics - Storage: -55°C; +85°C Operating at 50 Hz: (U/F gradient) - Operation: -40°C;... -
Page 6: R251 Avr Option
Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs 2.3 - R251 AVR option It is advised to use the “LAM” at 25% for load impacts > at 70% of the genset rated power. Potentiometer for voltage setting, 1000 W / 0,5 W min: setting range ±... -
Page 7: Typical Effects Of The Lam
Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs 2.5 - Typical effects of the LAM with a diesel engine or without a LAM (U/F only) 2.5.1 - Voltage Transient voltage drop (U/f) without LAM with Time 2.5.2 - Frequency... -
Page 8: Installation - Commisioning
Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs 3.2.2 - Special type of use 3 - INSTALLATION - COMMISSIONING WARNING 3.1 - Electrical checks on the AVR - Check that all connections have been Excitation circuit E+, E- must not be left made properly as shown in the attached open when the machine is running: AVR... -
Page 9: Electrical Faults
Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs 3.3 - Electrical faults Fault Action Effect Check/cause The alternator starts up and its voltage is still correct when the - Lack of residual magnetism battery is removed. Connect a new battery The alternator starts up but its - Check the connection of the voltage... -
Page 10: Spare Parts
Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs 4 - SPARE PARTS 4.1 - Designation Description Type Code R251 AEM 110 RE 021 4.2 - Technical support service Our technical support service will be pleased provide additional... -
Page 11: Disposal And Recycling Instructions
Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs Disposal and recycling instructions committed limiting environmental impact of our activity. We continuously monitor production processes, material sourcing and products design to improve recyclability and minimise our environmental footprint. - Page 12 Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs...
- Page 13 Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs...
- Page 14 Installation and maintenance Electric Power Generation 4092 en - 2018.01 / e R251 AVRs...
- Page 15 Service & Support Our worldwide service network of over 80 facilities is at your service. This local presence is our guarantee for fast and efficient repair, support and maintenance services. Trust your alternator maintenance and support to electric power generation experts. Our field personnel are 100% qualified and fully trained to operate in all environments and on all machine types.
- Page 16 Linkedin.com/company/Leroy-Somer Twitter.com/Leroy_Somer_en Facebook.com/LeroySomer.Nidec.en YouTube.com/LeroySomerOfficiel 4092 en - 2018.01 / e...
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