Leroy-Somer LSA 42.3 Instruction Manual

..; ;oy Scooter
4803 en-2011.12/b
LSA 42.3 - 4 POLES
ALTERNATOKS
Installation and maintenanc

LEROY-SOMER | Installation and maintenance 4803 en-2011.12/b
LSA 42.3 - 4 POLES
ALTERNATORS
This manual concerns the alternator which you have just purchased.
We wish to draw your attention to the contents of this maintenance manual.
SAFETY MEASURES
Before using your mac ine for t e first time,
it is important to read t e w ole of t is
installation and maintenance manual.
All necessary operations and interventions
on t is mac ine must be performed by a
qualified tec nician.
Ourtec nical support Service will be pleased
to provide any additional information you
may require.
T e various operations described in t is
manual are accompanied by recommenda-
tions or symbols to alert t e user to t e
potential risk of accidents. It is vital t at you
understand and take notice of t e different
warning symbols used.
(w a r n in g )
Warning symbol for an operation capable
of damaging or destroying the machine
or surróunding equipment.
A
Warning symbol for general danger to
personnel. &
Warning symbol for electrical danger to
personnel.
WARNING SYMBOLS
We wis to draw your attention to t e
following 2 safety measures w ic must be
complied wit :
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.
Asetof self-ad esive stickers depicting t e
various warning symbols is included wit
t is maintenance manual. T ey s ould be
positioned as s own in t e drawing below
once t e mac ine as been fully installed.
WARNING
The alternators must not be put into
Service until the machines in which they
are to be incorporated have been
declared compliant with Directives EC
and plus any other directives that may be
applicable.
Note: LEROY-SOMER reserves t e rig t to
modify t e c aracteristics of its producís at
any time in order to incorpórate t e latest
tec nological developments. T e informa
tion contained in t is document may
t erefore be c anged wit out notice.
Copyrig t 2005 : MOTEURS LEROY-
SOMER
T is document is t e property of:
MOTEURS LEROY SOMER.
It may not be reproduced in any form wit out
prior aut orization.
All brands and models ave been registered
and patents applied for.
2Leroy-Some*

LEROY-SOMER [ Installation and maintenance | ________ 4803 en-2011.12/ b
LSA 42.3 - 4 POLES
ALTERNATORS
CONTENTS
1 - RECEIPT ............................................................................................................................ 4
1.1- Standards and safety measures ................................................................................ ...4
1.2 - Inspection ....................................................................................................... 4
1.3 - Identification ................................................................ ....4
1.4-Storag e .......................................................................................... 4
1.5-Application s .................................................................................................................. 4
1.6 - Contraindications to use ............................................................................................... 4
2 -TECHNICAL CHARACTERISTICS .................................................................................... 5
2.1 - Electrical c aracteristics ............................................................................................... 5
2.2 - Mec anical c aracteristics ........................................................................................... 5
3 - INSTALLATION .................................................................................................................. 6
3.1 -Assembly ...................................................................................................................... 6
3.2 - C ecks prior to first use ................................................................................................ 7
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 - Fault detection .................. ......................................................................................... 11
4.4 - Mec anical defects .................................................................................................... 12
4.5 - Electrical faults ........................................................................................................... 12
4.6 - Dismantling, reassembly ............................................................................................ 14
4.7 - Installation & maintenance of t e PMG... .................................................................... 16
4.8 - Table of c aracteristics ............................................................................................... 16
5 - SPARE PARTS ............................................................................................ 18
5.1 - First maintenance parts .............................................................................................. 18
5.2 - Tec nical support Service ........................................................................................... 18
5.3 - Exploded views, parts list and tig tening torque ......................................................... 19
EC declaration of incorporation ......................................................................................... 22

LEROY-SOMER | Installation and maintenance 4803 en-2011.12/b
LSA 42.3 - 4 POLES
ALTERNATORS
1 - RECEIPT
1.1 - Standards and safety
measures
Our alternators comply wit most
international standards.
See t e EC Declaration of Incorporaron on
t elastpage.
1.2-Inspection
On receipt of your alternator, c eck t at it
as not suffered any damage ¡n transit. If
t ere are obvious signs of knocks, contact
t e transporter (you may be able to claim
on t eir ¡nsurance) and after a visual
c eck, turn t e mac ine by and to detect
any malfunction.
1.3-Identification
T e alternator is ¡dentified by means of a
nameplate fixed on t e mac ine (see
drawing).
Make sure t at t e nameplate on t e
mac ine conforms to your order.
T e mac ine ñame is defined according to
various criteria, for example :
LSA42.3S4 J6/4
• LSA: ñame used in t e PARTNER range
M : Marine
C : Cogeneration
•42.3: mac ine type
• S4: model
• J: excitation system (C: AREP/J: SHUNT)
• 6/4 : winding number / number of poles.
1.3.1 - Nameplate
So t at you can identify your mac ine
quickly and accurately, we suggest you
write its specifications on t e nameplate
below.
1.4-Storage
Prior to commissioning, mac ines s ould
be stored:
- away from umidity (< 90%); after a long
period of storage, c eck t e mac ine
insulation (section 3.2.1). To prevent t e
bearings from becoming marked, do not
store in an environment wit significant
vibration.
1.5 - Application
T ese alternators are mainly designed to
produce electricity in t e context of
applications involving t e use of
generators.
1.6 - Contraindications to use
Use of t e mac ine is restricted to operating
conditions (environment, speed, voltage,
power, etc) compatible wit t e c aracteri
stics indicated on t e nameplate.

LEROY-SOMER Installation and maintenance 4803 e n -2011.12/b
LSA 42.3-4 POLES
ALTERNATORS
2 - TECHNICAL CHARACTERISTICS
1.1 - Electrical characteristics
T e PARTNER LSA 42.3 alternator is
generator wit out sliprings and revolving
field brus es, wound as “2/3 pitc ”; 12-wire,
wit class H insulation and a field excitation
system available in eit er “SHUNT” or
“AREP” or“PMG” versión.
In order to conform to standard EN 61000-
6.3, EN 61000-6.2, t e R 791 interference
suppression kit is needed.
2.1.1 - Electrical options
- Stator temperature detection probes.
- Space eaters.
2.2 - Mechanical characteristics
- Steel frame
- End s ields in cast iron
- Greasable ball bearings
- Mounting arrangement
MD 35:
single bearing wit standard feet and SAE
flanges/coupling discs.
B 34:
two-bearing wit SAE flange and standard
cylindrical s aft extensión.
- Drip-proof mac ine, self-cooled
2.1.1 - Mechanical options
- Protection against ars environments .
-Air input filter, air output labyrint cowling.
Alternators fitted wit air inlet filters s ould
be derated by 5% (power).
To prevent excessive temperature rise
caused by clogged filters, it is advisable to fit
t e stator winding wit t ermal sensors
(PTC).
STATOR: 12 wires (T1 to T12 identification)
T12
T12
STATOR: 6 or 12 wires (T1 to T 12 identification)
rre
T12
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LEROY-SOMER Installation and maintenance 4803 en -2011.12/ b
LSA 42.3-4 POLES
ALTERNATORS
3 - INSTALLATION
Personnel undertaking the various
operations indicated in this section must
wear personal protective equipment
appropriate for mechanical and electri
cal hazards.
3.1 -Assembly
A
All mechanical handling operations
must be undertaken using suitable
equipment and the machine must be
horizontal. Check how much the machine
weighs (see 4.7) before choosing the
lifting tool.
During this operation, do not allow
anyone to stand under the load.
3.1.1 - Handling
T e generously-sized lifting rings are for
andling t e alternator alone. T ey must not
be used to lift t e genset. T e c oice of
lifting ooksor andless ouldbedetermined
by t e s ape of t ese rings. C oose a lifting
system w ic respects t e integrity and t e
environment of t e mac ine.
(w a r n in g )
After handling the machine using the
lifting ring, snap on the plástic cover
provided in the maintenance manual
wallet.
3.1.2 -Coupling
3.1.2.1 - Single-bearing alternator
Before coupling t e mac ines, c eck t at
t ey are compatible by:
- undertaking a torsional analysis of t e
transmission,
- c ecking t e dimensions of t e flyw eel
and its ousing, t e flange, coupling discs
and offset.
(w a r n in g )
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 the flywheel holes by
cranking the engine.
Make sure the machine is securely
bedded in position during coupling.
C eck t at t ere is lateral play on t e
cranks aft.
3.1.2.2 - Double-bearing alternator
- Semi-flexible coupling
Careful alignment oí t e mac ines is
recommended, c ecking t at t e lack of
concentricity and parallelism of bot parts
of t e coupling do not exceed 0.1 mm.
This alternator has been balanced with a
1/2 key.
3.1.3 -Location
T e room w ere t e alternator is placed
must be ventilated to ensure t at t e
ambient temperature cannot exceed t e
data on t e nameplate.
Lerov-Somer

LEROY-SOMER | Installation and maintenance | 4803 e n -2011.12/b
LSA 42.3 -4 POLES
ALTERNATORS
3.2 - Checks prior to first use
3.2.1 - Electrical checks
A
Under no circumstances should an
alternator, neworotherwise, beoperated
if the insulation is less than 1 megohm
for the stator and 100,000 ohms for the
other windings.
T ere are 2 possible met ods for restoring
t e above minimum valúes.
a) Dry out t e mac ine for 24 ours in a
drying oven at a temperature of 110 °C
(wit out t e regulator).
b) Blow ot air into t e air intake, aving
made sure t at t e mac ine is rotating wit
t e exciter field disconnected.
Note: Prolonged standstill: In orderto avoid
t ese problems, we recommend t e use of
space eaters, as well as turning over t e
mac ine from time to time. Space eaters
are only really effective if t ey are working
continuously w ile t e mac ine is stopped.
(w a r n in g )
Ensure that the alternator has the
degree of protection matching the
defined environmental conditions.
3.2.2 - Mechanical checks
Before starting t e mac ine for t e first time,
c eck t at:
- all fixing bolts and screws are tig t,
- t e cooling air is drawn in freely,
- t e protective grilles and ousing are cor-
rectly in place,
- t e standard direction of rotation is clock-
wise as seen from t e s aft end (p ase
rotation in order 1-2-3).
For anti-clockwise rotation, swap 2 and 3.
- t e winding connection corresponds to t e
site operating voltage (see section 3.3).
3.3 - Terminal connection diagrams
To modify t e connection, c ange t e
position of t e stator cables on t e termináis.
T e winding code is specified on t e
nameplate.
A
Any intervention on the alternator
termináis during reconnection or checks
should be performed with the machine
stopped.
Under no circumstances must the
terminal box internal connections be
subjected to any stress due to the cables
connected by the user.
us»roy~Somer 7

LEROY-SOMER | Installation and maintenance | 4803 en-2011.12/b
LSA 42.3 - 4 POLES
ALTERNATORS
Connection code L.L voltage Factory connection
Winding
6
8
50 Hz
190-208
220 - 230
60 Hz
190-240
190-208
L3(W) T3 L2(V)
R 220 voltage sensing:
0 => (T8) / 110 V=> (T11)
R 438 voltage sensing:
0 => (T3) / 220 V => (T2)
-►N
• L3(W)
‘ L2(V)
-► L1(U)
NDE
L1(U) Winding 50 Hz 60 Hz
6380-415 380 - 480
-N 7440 - 460 -
8-380-416
R 220 voltage sensing:
0 => (T8) / 110 V => (T11)
R 438 voltage sensing:
0 => (T3) / 380 V => (T2)
T11
T12
T10
T9
T6
T8
T5
3> ■N
L3(W)
-> * L2(V)
‘ L1(U)
NDE
Winding
6
8
50 Hz
220 - 240
250 - 260
200
60 Hz
220 - 240
220 - 240
Tensión LM = 1/2 tensión LL
LM voltage = 1/2 LL voltage
R 220 voltage sensing:
0 => (T1) / 110 V => (T4)
R 438 voltage sensing:
0 => (T8) / 220 V => (T11) NDE
Winding
6
8
50 Hz
220 - 240
250 - 260
200
60 Hz
220 - 240
220 - 240
Tensión LM = 1/2 tensión LL
LM voltage = 1/2 LL voltage
R 220 voltage sensing:
0 =>(T8) / 110 V => (T11)
R 438 voltage sensing:
0 => (T3) / 220 V => (T2)
; eroy-Some«

LEROY-SOMER Installation and maintenance 4803 en-2011.12/b
LSA 42.3 -4 POLES
ALTERNATORS
Connection code L.L voitage Factory connection
L1 (V) Winding
1 phase
Or T12
3 phases
6
8
50 Hz
110-120
120-130
60 Hz
120
T11-S T5 - y
13 S
110-120
R 220 voltage sensing:
0 => (T8) / 110 V => (T11)
R 438 voltage sensing:
0 =>(T3) / 110 V => (T2)
T9 —HQ
T10
T8
Ti2ÍN_ T2
O
■ L3(W)
* L2(V)
' L1(U)
NDE
Connection inadvisable Winding
6
8
50 Hz
220 - 240
250 - 260
200
60 Hz
220 - 240
220 - 240
T11
LM voltage = 1/2 LL voltage
R 220 voltage sensing:
0 =>(T8) / 110 V => (T11)
R 438 voltage sensing:
0 => (T3) / 220 V => (T2) NDE
4-WIRE SINGLE-PHASE - type M or M1 DEDICATED WINDING
T1
SERIAL
CONNECTION
T2 T3
M
T4
50/60 Hz voltage Output
L -L L -M Connect L L M
220 110
230 115 T 2 -T 3 T1 T4 T 2 -T 3
240 120
^ R 220 voltage sensing: 0 => (T1) / 110 V => (T2)
PARALLEL
CONNECTION
50/60 Hz voltage Output
L -L L -M Connect L L M
110
115 _T1 -T3 T1-T3 T 2 -T 4 _
120 -T 2-T 4
R 220 voltage sensing: 0 = > (T1) / 110 V => (T2)
3.3.1 - Option connection diagram
^ R 791 ¡nterference suppression kit Voltage potentiometer
Connections
Black #- T1
Black • - T 2
Black • - T 3
Blue • - N
White ^
©
T1
T2
T3
N
©
T1
T2
T3
T1
T2
T3
T1
T9
T3
©
T2
T4
T3 ST4
Voltage adjustment
via remóte potentiometer
Space heater PTC stator sensors
1U1
102
130C
blue wire
150C
black wire
180C
red/white wire
Lerov-Som«=r

LEROY-SOMER Installation and maintenance 4803 en-2011.12/b
LSA 42.3 - 4 POLES
ALTERNATORS
3.3.2- Connection checks
á s
Electrical installations must comply with
the current legislation in forc in the
country of use.
C eck t at:
- T e residual circuit-breaker conforms to
legislation on protection of personnel, in
forcé in t e country of use, and as been
correctly installed on t e alternator power
output as cióse as possible to t e alternator.
(In t is case, disconnect t e wire of t e
interference suppression module linking t e
neutral).
- Any protection devices in place ave not
been tripped.
- If t ere is an external AVR, t e connections
between t e alternator and t e cabinet are
made in accordance wit t e connection
diagram.
- T ere is no s ort-circuit p ase-p ase or
p ase-neutral between t e alternator output
termináis and t e generator set control
cabinet (part of t e Circuit not protected by
circuitbreakers or relays in t e cabinet).
- T e mac ine s ould be connected wit t e
busbar separating t e termináis as s own in
t e terminal connection diagram.
- T e alternator eart terminal inside t e
terminal box is connected to t e electrical
eart Circuit
- T e alternator eart terminal on t e stator
mounting foot is connected to t e frame.
3.4 - Commissioning
A
The machine can only be started up and
used if the installation is in accordance
with the regulations and instructions
defined in this manual.
T e mac ine is tested and set up at t e
factory. W en first used wit no load, make
sure t at t e drive speed is correct and
stable (see t e nameplate).
On application of t e load, t e mac ine
s ould ac ieve its rated speed and voltage;
owever, in t e eventof abnormal operation,
t e mac ine setting can be altered (follow
t e adjustment procedure in section 3.5). If
t e mac ine still operates incorrectly, t e
cause of t e malfunction must be located
(see section 4.4).
3.5 - Setting up
A
The various adjustments during tests
must be made by a qualified engineer.
Ensure that the drive speed specified on
the nameplate is reached before
commencing adjustment.
After operational testing, replace all
access panels or covers.
The AVR is used to make any adjustments
to the machine.
ctti