Nidec LEROY-SOMER LSA 49.3 Installation And Maintenance Manual Download | Manualshive

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LSA 49.3

Low Voltage Alternator - 4 pole

Installation and maintenance

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Summary of Contents for LEROY-SOMER LSA 49.3

Page 1: ...LSA 49 3 Low Voltage Alternator 4 pole Installation and maintenance...

Page 2: ...stickers depicting the various warning symbols is included with this maintenance manual They should be positioned as shown in the drawing below once the machine has been fully installed WARNING The a...

Page 3: ...3 1 Assembly 6 3 2 Checks prior to first use 6 3 3 Terminal connection diagrams 7 3 4 Commissioning 10 3 5 Setting up 10 4 SERVICING MAINTENANCE 11 4 1 Safety measures 11 4 2 Routine maintenance 11 4...

Page 4: ...If there are obvious signs of knocks contact the transporter you may be able to claim on their insurance and after a visual check turn the machine by hand to detect any malfunction 1 3 Identification...

Page 5: ...arrangement single bearing with standard feet and SAE flanges coupling discs two bearing with SAE flange and standard cylindrical shaft extension Drip proof machine self cooled Degree of protection IP...

Page 6: ...een the alternator and the engine by performing undertaking a torsional analysis of the transmission alternators data are available on request checking the dimensions of the flywheel and its housing t...

Page 7: ...defined environmental conditions Mechanical checks Before starting the machine for the first time check that all fixing bolts are tight the length of bolt and the tightening torque are correct the coo...

Page 8: ...4 T9 T3 T6 T11 T5 T2 T8 L2 V T1 T2 T3 T4 T7 T5 T8 T4 T7 T5 T8 T4 T7 T5 T8 T6 T9 N T10 T11 T12 T1 T2 T3 T4 T12 T5 T10 T6 T11 W 3 L3 V 2 L2 U 1 L1 N T9 T8 T7 W 3 L3 V 2 L2 U 1 L1 W 3 L3 V 2 L2 U 1 L1 W...

Page 9: ...T3 D350 U T1 V T2 W T3 or Connection codes Voltage Detection Factory connection Winding Winding DE NDE DE NDE Star Delta In case of reconnection ensure that AVR voltage sensing is correct The factory...

Page 10: ...erminal box is connected to the electrical earth circuit The earth terminal is connected to the frame The connections inside the terminal box must never be subjected to stress due to cables connected...

Page 11: ...electrical connections in the installation Electrical servicing Commercially available volatile degreasing agents can be used Do not use trichlorethylene perchlo rethylene trichloroethaneoranyalkalin...

Page 12: ...in coupling Rotor balancing fault Engine Alternator Excessive vibration and humming noise coming from the machine Phase imbalance Stator short circuit Abnormal noise Alternator damaged by a significa...

Page 13: ...t out Revolving field coil short circuited check the resistance Speed too low Increase the drive speed do not touch theAVR voltage pot P2 before running at the correct speed Voltage too high AdjustAVR...

Page 14: ...battery Rh 50 300W ASSEMBLY A Field Assembly B Connect a Variac variable power supply and a diode bridge on both exciter field wires 5 and 6 Both these systems should have characteristics which are co...

Page 15: ...p If the diodes are faulty Remove the surge suppressor 347 copper Shunt Remove the H nuts for mounting the diode bridges on the support Change the crescents respecting the polarity Access to connectio...

Page 16: ...he DE bracket 30 screws and the inner bearing retainer 68 screws Remove the DE bracket 30 Take out the antifriction bearing 60 using a puller with a central screw Fit the new bearing after heating it...

Page 17: ...eaded rod into the bracket hole to make it easier to assemble Fit the thrust bearing screws remove the threaded rod fit the other screw and tighten up the assembly Tighten the DE bracket 30 screws Ref...

Page 18: ...AREP at 20 C Type X1 X2 Z1 Z2 S4 6 wire 0 249 0 297 S4 12 wire 0 257 0 312 M6 0 201 0 260 M8 0 205 0 268 L9 0 204 0 262 L10 0 208 0 269 Field excitation current i exc A AREP 400V 50 Hz i exc excitatio...

Page 19: ...perature coefficient installed in the stator winding 1 per phase There can be a maximum of 2 triplets in the winding at 2 levels warning and trip and 1 thermistor in the rear bearing These sensors mus...

Page 20: ...20 2022 11 l Electric Power Generation Installation and maintenance LSA 49 3 Low Voltage Alternator 4 pole 5280 en 5 4 Exploded views parts list and tightening torque Single bearing...

Page 21: ...21 2022 11 l Electric Power Generation Installation and maintenance LSA 49 3 Low Voltage Alternator 4 pole 5280 en Two bearing...

Page 22: ...le M6 8 3 130 1 Neutral busbar M12 35 36 1 Non drive end NDE bracket 172 6 Isolator M8 26 41 1 Terminal box front panel M8 20 176 1 Current transformer 47 1 Terminal box rear panel M8 20 198 1 Voltage...

Page 23: ...Waste hazardous materials The following components and materials require special treatment and must be separated from the alternator before the recycling process electronic materials found in the term...

Page 24: ...24 2022 11 l Electric Power Generation Installation and maintenance LSA 49 3 Low Voltage Alternator 4 pole 5280 en...

Page 25: ...U dated 26th February 2014 EN and IEC 60034 1 60034 5 and 60034 22 ISO 8528 3 Reciprocating internal combustion engine driven alternating current generating sets Part 3 Alternating current generators...

Page 26: ...26 2022 11 l Electric Power Generation Installation and maintenance LSA 49 3 Low Voltage Alternator 4 pole 5280 en...

Page 27: ...icient 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...

Page 28: ...www emersonindustrial com 2022 11 l www leroy somer com epg 5280 en Connect with us at...

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