Nidec Leroy-Somer LSA 46.3 User Manual Download

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LSA 46.3

Low Voltage Alternator - 4 pole

Installation and maintenance

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Summary of Contents for Leroy-Somer LSA 46.3

Page 1: ...LSA 46 3 Low Voltage Alternator 4 pole Installation and maintenance ...

Page 2: ...ion to the following 2 safety measures which must be complied with a During operation do not allow anyone to stand in front of the air outlet guards in case anything is ejected from them b Do not allow children younger than 14 to go near the air outlet guards Aset of self adhesive stickers depicting the various warning symbols is included with this maintenance manual They should be positioned as s...

Page 3: ... 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 3 Bearings 12 4 4 Mechanical defects 12 4 5 Electrical faults 13 4 6 Dismantling reassembly 15 4 7 Installation maintenance of the PMG 17 4 8 Table of characteristics 17 18 5 SPARE PARTS 19 5 1 First maintenance pa...

Page 4: ...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 The alternator is identified by means of a nameplate fixed on the machine see drawing Make sure that the nameplate on the machine conforms to your order So that you can identify your alternator quickly and accurately we suggest you fill in its speci...

Page 5: ...hields Protected ball bearings greased for life Mounting arrangements foot and flange mounted single bearing with SAE coupling disc double bearing with SAE flange and standard cylindrical shaft extension Drip proof machine self cooled Degree of protection IP 23 Mechanical options Air inlet filter Regreasable ball bearings IP 44 protection T1 T2 T3 T4 T5 T6 Varistor 5 6 T7 T8 T9 T10 T11 T12 STATOR ...

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 the flange coupling discs and offset WARNING When coupling the alternator to the prime mover do not use the fan to turn the alternator or rotor The holes of the coupling discs should be aligned with th...

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 cooling air is drawn in freely the protective grills and housing are cor rectly in place the standard direction of rotation is clock wise as seen from the drive end phase rotation in order 1 2 3 For ant...

Page 8: ...50 V T2 W T3 N W 3 L3 V 2 L2 U 1 L1 T6 T3 T9 T2 T8 T1 T7 T11 T10 T12 T5 T4 D 3PH FF 1PH F G 1PH L M L T7 T10 T9 T3 T2 T8 T1 T5 T11 T12 T6 T4 W 3 L3 V 2 L2 U 1 L1 T3 T11 T2 T1 T7 T10 T12 T4 T8 T5 T9 T6 L1 U N L3 W T1 T7 T12 T10 T4 T9 T3 T6 T11 T5 T2 T8 L2 V A 3PH 60 Hz 50 Hz 190 208 190 240 208 230 190 208 6 7 8 R250 0 T8 110V T11 D350 U T1 V T2 W T3 N W 3 L3 V 2 L2 U 1 L1 T6 T3 T9 T2 T8 T1 T7 T10 ...

Page 9: ...a set of flexible shunts and special connection links as an option for making these connections Winding Winding T1 T4 T3 T6 T5 T2 L1 U L3 W L2 V L1 U L3 W L L T1 T4 T3 T6 T5 T2 L2 V Option connection diagram R 791 T interference suppression kit standard for CE marking Remote voltage potentiometer Black Black Black Blue Green Yellow Connections A D F T1 T1 T1 T2 T2 T2 T3 T3 T3 N N Voltage adjustmen...

Page 10: ...e terminal 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 by the user Diameter M6 M8 M10 M12 Torque 4 Nm 10 Nm 20 Nm 35 Nm Tolerance 15 3 4 Commissioning The machine can only be started up and used if the installation is in accordance with the regulations...

Page 11: ...s electrical connections in the installation Electrical servicing Commercially available volatile degreasing agents can be used Do not use trichlorethylene perchlo rethylene trichloroethaneoranyalkaline products These operations must be performed at a cleaning station equipped with a vacuum system that collects and flushes out the products used The insulating components and the impregnation system...

Page 12: ...r if the grease has turned black change the bearing Bearing not fully locked abnormal play in the bearing cage End shields incorrectly aligned Abnormal temperature Excessive overheating of alternator frame more than 40 C above the ambient temperature Air flow inlet outlet partially clogged or hot air is being recycled from the alternator or engine Alternator operating at too high a voltage 105 of ...

Page 13: ...evolving 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 voltage potentiometer Adjustment ineffective FaultyAVR Voltage oscillations Adjust the AVR stability potentiometer If no effect try normal or fast stability modes ST2 Check the speed possibility of cyclic i...

Page 14: ...ttery 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 compatible with the field excitation power of the machine see the nameplate 3 Run the unit at its rated speed 4 Gradually increase the exciter field current by adjusting the rheostat or the variac and mea...

Page 15: ...oving the top of the cover 48 or the AVR access door 59 Replacing the NDE bearing Remove the box lid 48 the NDE panel 47 and the side panels 367 Disconnect the stator outputs T1 to T12 Disconnect the auxiliary winding wires AREP X1 X2 Z1 Z2 Disconnect the exciter wires 5 6 Remove the air inlet louvre 51 If using a single bearing or double bearing machine without the regreasable bearing option Remo...

Page 16: ...puller with a central screw Fit the new bearing after heating it by induction to approximately 80 C Screw a threaded rod into the thrust bearing 68 Refit the shield 32 on the machine Slide the threaded rod into the shield hole to make it easier to assemble see basic diagram Tighten the bottom thrust bearing screws 78 remove the threaded rod and fit the other screws Block the 6 screws 31 of the bea...

Page 17: ...rse order 51 53 52 4 7 Installation and maintenance of the PMG The PMG reference is PMG 2 See the PMG manual ref 4211 4 8 Table of characteristics Table of average values Alternator 4 poles 50 Hz Standard winding No 6 12 wire 400V for the excitation values The voltage and current values are given for no load operation and operation at rated load with separate field excitation All values are given ...

Page 18: ... 0 75 2 97 M7 0 9 2 86 M8 0 9 3 08 L10 0 78 2 64 L11 0 78 2 92 For 60 Hz machines the i exc values are approximately 5 to 10 lower Voltage of auxiliary windings at no load Type X1 X2 Z1 Z2 S2 104 16 S3 103 12 S4 S5 101 12 M7 M8 123 16 L10 L11 119 12 Table of weights values given for information only Type Total weight kg Rotor kg S2 569 245 S3 599 257 S4 674 277 S5 682 277 M7 M8 754 307 L10 L11 888...

Page 19: ...e stator winding 1 per phase There can be a maximum of 2 triplets in the winding at 2 levels warning and trip and 1 or 2 thermistors in the shields These sensors must be linked to adapted sensing relays supplied optionally Cold resistance of cold thermistor sensors 100 to 250 Ω per sensor Connection accessories 6 wire machines coupling F 12 wire machines coupling A F F F 5 2 Technical support serv...

Page 20: ...2019 02 g 20 Electric Power Generation Installation and maintenance LSA 46 3 Low Voltage Alternator 4 pole 5278 en 5 4 Exploded view parts list and tightening torque Single bearing ...

Page 21: ...2019 02 g 21 Electric Power Generation Installation and maintenance LSA 46 3 Low Voltage Alternator 4 pole 5278 en Double bearing ...

Page 22: ... S A E adaptor ring M12 75 134 1 Panel fixing M6 10 33 1 Protective guard M6 8 135 1 Drive end DE terminal box seal 36 1 Non drive end NDE shield M12 75 198 1 Voltage regulator AVR M5 6 37 8 Tie rod 199 1 Interference suppression module RFI kit 41 1 Terminal box front panel M6 8 279 6 8 Connection bar 42 1 Drive end DE terminal box seal 320 1 Coupling sleeve 47 1 Non drive end NDE terminal box sea...

Page 23: ...g processes Our technical support depart ment can provide detailed directions on how to dismantle products on request 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 terminal box including the automatic voltage regulator 198 current transformers 176 in...

Page 24: ...2019 02 g 24 Electric Power Generation Installation and maintenance LSA 46 3 Low Voltage Alternator 4 pole 5278 en ...

Page 25: ...anufactured by Leroy Somer or on Leroy Somer s behalf comply with the following International Standards and Directive 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 for generating sets Low Voltage Directive Nr 2014 35 UE dated 26 February 2014 Furthermore these generators d...

Page 26: ...2019 02 g 26 Electric Power Generation Installation and maintenance LSA 46 3 Low Voltage Alternator 4 pole 5278 en ...

Page 27: ...cient 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 Where we can help Contact us Americas ...

Page 28: ...www emersonindustrial com 2019 02 g www leroy somer com epg 5278 en Linkedin com company Leroy Somer Twitter com Leroy_Somer_en Facebook com LeroySomer Nidec en YouTube com LeroySomerOfficiel ...

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