R250 50Hz LAM OFF 901 8 78 SPECIAL KNEE 456 65Hz 7 LAM OFF KNEE 57Hz LAM OFF 6 LAM o 9 OFF 1 13% 2 3 4 5 60Hz 25% OFF 13% FREQ. & L.A.M. CONFIG. KNEE 47.
Electric Power Generation Installation and maintenance 4067 en - 2022.05 / h R250 AVR 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. All necessary operations and interventions on this machine must be performed by a qualified technician.
Electric Power Generation Installation and maintenance 4067 en - 2022.05 / h R250 AVR CONTENTS 1 - SUPPLY ..............................................................................................................................4 1.1 - SHUNT excitation system ............................................................................................4 2 - R250 AVR ...........................................................................................................................5 2.
Electric Power Generation Installation and maintenance 4067 en - 2022.05 / h R250 AVR The regulator monitors the exciter excitation current as a function of the alternator output voltage. Very simple in design, the alternator with shunt excitation has no sustaining short-circuit capacity. 1 - SUPPLY 1.1 - SHUNT excitation system The alternator with Shunt excitation is selfexcited with an R250 voltage regulator.
Installation and maintenance Electric Power Generation 4067 en - 2022.05 / h R250 AVR 2 - R250 AVR 2.1 - Characteristics - Storage: -55°C; +85°C - Operation: -40°C; +70°C - Voltage regulation: around ± 0,5 % - Supply range/voltage detection 85 to 139V (50/60Hz). - Rapid response time (500 ms) for a transient voltage variation amplitude of ± 20 %.
Electric Power Generation Installation and maintenance 4067 en - 2022.05 / h R250 AVR 2.3 - AVR options Potentiometer for remote voltage adjustment, 1000 Ω / 0.5 W min: adjustment range ± 5%. - Remove the ST4 jumper. It is advised to use the “LAM” at 25% for load impacts > at 70% of the genset rated power. Voltage Voltage UN U/f LAM 0,85 UN For wiring up the external potentiometer; the “earth” wires must be isolated as well as the potentiometer terminals (wires at the same voltage as the power). 2.
Installation and maintenance Electric Power Generation 4067 en - 2022.05 / h R250 AVR 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 UN 0,9 (U/f) without LAM with LAM 0,8 0 1s Time 2s 3s 2.5.2 - Frequency Max speed drop with LAM fN 0,9 without LAM 0,8 0 1s Time 2s 3s 2.5.
Electric Power Generation Installation and maintenance 4067 en - 2022.05 / h R250 AVR 3 - INSTALLATION COMMISSIONING 3.2.2 - Special type of use WARNING 3.1 - Electrical checks on the AVR - Check that all connections have been made properly as shown in the attached wiring diagram. - Check that the position of the jumper corresponds to the operating frequency. - Check whether the ST4 jumper or the remote adjustment potentiometer have been connected.
Electric Power Generation Installation and maintenance 4067 en - 2022.05 / h R250 AVR 3.
Electric Power Generation Installation and maintenance R250 AVR 4 - SPARE PARTS 4.1 - Designation Description Type Code AVR R250 AEM 110 RE 019 4.2 - Technical support service Our technical support service will be pleased to provide any additional information you may require. For all spare parts orders or technical support requests, send your request to service.epg@leroy-somer.com or your nearest contact, whom you will find at www.lrsm.co/support indicating the type and the code number of the AVR.
Electric Power Generation Installation and maintenance 4067 en - 2022.05 / h R250 AVR Disposal and recycling instructions We are committed limiting the environmental impact of our activity. We continuously monitor our production processes, material sourcing and products design to improve recyclability and minimise our environmental footprint. These instructions are for information purposes only. It is the user’s responsibility to comply with local legislation regarding product disposal and recycling.
Electric Power Generation Installation and maintenance R250 AVR 12 4067 en - 2022.
Electric Power Generation Installation and maintenance 4067 en - 2022.
Electric Power Generation Installation and maintenance R250 AVR 14 4067 en - 2022.
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. We have a deep understanding of alternator operation, providing the best value service to optimise your cost of ownership.
www.leroy-somer.com/epg Linkedin.com/company/leroy-somer Twitter.com/Leroy_Somer_en Facebook.com/LeroySomer.Nidec.en YouTube.com/LeroySomerOfficiel 4067 en - 2022.
