Leroy-Somer TAL 044 Instruction Manual

343
70 79
90
51
36
48
29
1
124
144
199
347
100
107
91
37
198
4
325
15
16
30
31 32
40
322
323
33
49
28
349
320
Low Voltage Alternators - 4 pole
TAL 044
Installation and maintenance
Three-phase 6-wire
Single phase 4-wire

2
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
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 machine for the rst 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
qualied technician.
Our technical support service will be pleased
to provide any additional information you
may require.
The various operations described in this
manual are accompanied by recommenda-
tions or symbols to alert the user to the po-
tential risk of accidents. It is vital that you
understand and take notice of the different
warning symbols used.
Warning symbol for an operation capable
of damaging or destroying the machine
or surrounding equipment.
Warning symbol for general danger to
personnel.
Warning symbol for electrical danger to
personnel.
WARNING SYMBOLS
We wish to draw your attention 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.
A set of self-adhesive 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 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.
This manual is be given to the end user.
The range of electric alternators and
their derivatives, manufactured by us or
on our behalf, comply with the technical
requirements of the customs Union
directives (EAC).
© - We reserve the right to modify the
characteristics of its products at any time in
order to incorporate the latest technological
developments. The information contained in
this document may therefore be changed
without notice.
This document may not be reproduced in
any form without prior authorization.
All brands and models have been registered
and patents applied for.
WARNING

3
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
CONTENTS
1 - RECEIPT ...........................................................................................................................4
1.1 - Standards and safety measures..................................................................................4
1.2 - Inspection....................................................................................................................4
1.3 - Identication................................................................................................................4
1.4 - Storage .......................................................................................................................4
1.5 - Applications.................................................................................................................4
1.6 - Usage restrictions .......................................................................................................4
2 - TECHNICAL CHARACTERISTICS...................................................................................5
2.1 - Electrical characteristics..............................................................................................5
2.2 - Mechanical characteristics..........................................................................................5
3 - INSTALLATION.................................................................................................................7
3.1 - Assembly.....................................................................................................................7
3.2 - Checks prior to rst use ...............................................................................................8
3.3 - Terminal connection diagrams.....................................................................................8
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 - Table of characteristics..............................................................................................16
5 - SPARE PARTS................................................................................................................18
5.1 - First maintenance parts.............................................................................................18
5.2 - Technical support service..........................................................................................18
5.3 - Accessories...............................................................................................................18
5.4 - Exploded view, parts list and tightening torque ..........................................................19
Disposal and recycling instructions
EC declaration of incorporation

4
2017.01 / f
Electric Power Generation
LSA 000-1-006 e
Moteurs Leroy-Somer - Boulevard Marcellin Leroy,
CS 10015 - 16915 Angoulême Cedex 9 - France
IEC 60034 - 1 & 5. / ISO 8528 - 3. / NEMA MG1 - 32 & 33.
R
CUS Made in ............................
166631
IPLSA
N°:
Th.class.
A.V.R. Excit.
Excit. values full load : V / A
at no load : A
D.E. bearing
N.D.E. bearing
Altitude : m
kVA
kW
A
V
kVA
kW
A
Weight : kg
r.p.m.
P.F. :
Hz
RATINGS
Voltage
Phase
Conn.
Contin.
P.R.
B.R.
40°C.
Std by
27°C.
Date :
TAL
Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
1 - RECEIPT
1.1 - Standards and safety
measures
Our alternators comply with most
international standards.
See the EC Declaration of Incorporation on
the last page.
1.2 - Inspection
On receipt of your alternator, check that it
has not suffered any damage in transit. 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 - Identication
The alternator is identied by means of a
nameplate xed 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 ll in
its specications on the nameplate below.
1.4 - Storage
Prior to commissioning, machines should
be stored :
- away from humidity (< 90%); after a long
period of storage, check the machine
insulation. To prevent the bearings from
becoming marked, do not store in an
environment with signicant vibration.
1.5 - Application
These alternators are mainly designed to
produce electricity in the context of
applications involving the use of
generators.
1.6 - Usage restrictions
Use of the machine is restricted to operating
conditions (environment, speed, voltage,
power, etc) compatible with the characteri-
stics indicated on the nameplate.

5
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
2 - TECHNICAL CHARACTERISTICS
2.1 - Electrical characteristics
This machine is an alternator without
sliprings and revolving eld brushes, wound
as “2/3 pitch”; 6 and 4-wire, with class H
insulation and a eld excitation system
available in either “SHUNT” version.
• Electrical options
- Space heaters
In order to conform to standard EN 61000-
6-3, EN 61000-6-2, EN 55011, the R791
interference suppression kit is needed.
2.2 - Mechanical characteristics
- Steel frame
- End shields in cast iron
- Greasable ball bearings
- Mounting arrangement MD 35:
single bearing with standard feet and SAE
anges/coupling discs
- Drip-proof machine, self-cooled
• SHUNT 6-wire
Varistor
-
+
T1
U1
T4
U2
T2
V1
T5
V2
*
T3
W1
T6
W2
SL UF 0E UF S V
F2 F1 N U N1 V
OPEN FOR 60Hz
FUSE
OPTIONAL
Black
Black
Black
Blue
Green/Yellow
R791T
T1
YΔ
T2
T3
T1
3 PH
T2
T3
N
Δ
T1
1 PH
T2
N.C.
Consult R120 manual ref.5243
EXCITER
MAIN FIELD
Armature
Exciter field
Rotating rectifiers
red
black
STATOR: 6-wire (T1 to T6 identification)
yellow
green
blue
Star
connection
* not connected in delta connection
* Delta
connection
* For delta connection (1PH – 3PH):
use terminals N and U, connect N and N1.

6
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
• SHUNT 4-wire single phase dedicated
-
+
T1
U1
T2
U2
T3
U5
T4
U6
SL UF 0E UF S V
F2 F1 N U N1 V
OPEN FOR 60Hz
FUSE
OPTIONAL
Black
Black
Black
Blue
Green/Yellow
R791T
T1
Serie
T4
N.C.
Consult R120 manual ref.5243
Varistor
EXCITER
MAIN FIELD
Armature
Exciter field
Rotating rectifiers
red
black
STATOR: 4-wire (T1 to T4 identification)
yellow
blue

7
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
3.2 - Checks prior to rst use
• Electrical checks
Under no circumstances should an
alternator, new or otherwise, be operated
if the insulation is less than 1 megohm
for the stator and 100,000 ohms for the
other windings.
3 - INSTALLATION
Personnel undertaking the various
operations indicated in this section must
wear personal protective equipment
appropriate for mechanical and electrical
hazards.
3.1 - Assembly
All mechanical handling operations
must be undertaken using suitable
equipment and the machine must be
horizontal. Check how much the machine
weighs before choosing the lifting tool.
During this operation, do not allow
anyone to stand under the load.
• Handling
The generously-sized lifting eyes are for
handling the alternator only. They must not
be used to lift the genset. The choice of
liftinghooksorhandlesshouldbedetermined
by the shape of the lifting eyes. Choose a
lifting system which respects the integrity
and the environment of the machine.
During this operation, do not allow
anyone to stand under the load.
• Single-bearing coupling
Before coupling, check the compatibility
between 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 ywheel
and its housing, the ange, 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 the ywheel holes by
cranking the engine.
Make sure the machine is securely
bedded in position during coupling.
Check that there is lateral play on the
crankshaft.
• Double-bearing coupling
- Semi-exible coupling
Careful alignment of the machines is
recommended, checking that the lack of
concentricity and parallelism of both parts
of the coupling do not exceed 0.1 mm.
This alternator has been balanced with a
1/2 key.
• Location
The room where the alternator is placed
must be ventilated to ensure that the
ambient temperature cannot exceed the
data on the nameplate.

8
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
There are 2 possible methods for restoring
the above minimum values.
a) Dry out the machine for 24 hours in a
drying oven at a temperature of 110 °C
(without the regulator).
b) Blow hot air into the air intake, having
made sure that the machine is rotating with
the exciter eld disconnected.
Note : Prolonged standstill
In order to avoid these problems, we
recommend the use of space heaters, as
well as turning over the machine from time
to time. Space heaters are only really
effective if they are working continuously
while the machine is stopped.
Ensure that the alternator has the degree
of protection matching the dened
environmental conditions.
• Mechanical checks
Before starting the machine for the rst time,
check that:
- all xing 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 anti-clockwise rotation, swap 2 and 3.
- the winding connection corresponds to the
site operating voltage (see section 3.3).
WARNING
3.3 - Terminal connection diagrams
To modify the connection, change the
position of the stator cables on the terminals.
The winding code is specied on the
nameplate.
Any intervention on the alternator
terminals during reconnection or checks
should be performed with the machine
stopped.
In no case should the internal
connections in the terminal box be
subjected to stresses due to cables
connected by the user.

9
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
• 6-wire connection
D3 PH Star
T1
T4
T6
T3
T5
T2
L2 (V)
L3 (W)
L1 (U)
T4
T5
T2
T3
C
Delta
T1
T4
T6
T3
T5 T2
T5
T3
T5
T3
T1
T6
DE
DE
DE
NDE
NDE
NDE
T4
T2
T1
T6
T4
T2
T1
T6
L
L
W(3)-L3
N
EARTH
V(2)-L2
U(1)-L1
W(3)-L3
V(2)-L2
U(1)-L1
T1
T4
T6
T5 T2
3 PH
C1 PH
Delta
T4
T5
T2
T3
T5
T3
T5
T3
T1
T6
DE
DE
DE
NDE
NDE
NDE
T4
T2
T1
T4
T2
L
L
W(3)-L3
N
EARTH
V(2)-L2
U(1)-L1
T6
T1 T6
to
R 120
to
R 120
to
R 120
to
R 120
to
R 120
to
R 120
W(3)-L3
V(2)-L2
U(1)-L1
OUTPUTS TO THE LEFTOUTPUTS TO THE RIGHT
T3
Connection
• 4-wire single phase dedicated connection
Connection
Series connection
DE
NDE
L
L
T1 T2
blue
yellow
T2
T3
T4
T1
T3 T4
to
R 120

10
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
• Connection checks
Electrical installations must comply with
the current legislation in force in the
country of use.
Check that:
- The residual circuit-breaker conforms to
legislation on protection of personnel, in
force in the country of use, and has been
correctly installed on the alternator power
output as close as possible to the alternator.
(In this case, disconnect the wire of the
interference suppression module linking the
neutral).
- Any protection devices in place have not
been tripped.
- If there is an external AVR, the connections
between the alternator and the cabinet are
made in accordance with the connection
diagram.
- There is no short-circuit phase-phase or
phase-neutral between the alternator output
terminals and the generator set control
cabinet (part of the circuit not protected by
circuitbreakers or relays in the cabinet).
- The machine should be connected with the
busbar separating the terminals as shown in
the terminal connection diagram.
- The alternator earth terminal inside the
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.
3.4 - Commissioning
The machine can only be started up and
used if the installation is in accordance
with the regulations and instructions
dened in this manual.
The machine is tested and set up at the
factory. When rst used with no load, make
sure that the drive speed is correct and
stable (see the nameplate). With the
regreasable bearing option, we recommend
greasing the bearings at the time of
commissioning (see section 4.3).
On application of the load, the machine
should achieve its rated speed and voltage;
however, in the event of abnormal operation,
the machine setting can be altered (follow
the adjustment procedure in section 3.5). If
the machine still operates incorrectly, the
cause of the malfunction must be located
(see section 4.5).
3.5 - Setting up
The various adjustments during tests
must be made by a qualied engineer.
Ensure that the drive speed specied on
the nameplate is reached before
commencing adjustment.
After operational testing, replace all
access panels or covers.
TheAVR isusedto make any adjustments
to the machine.

11
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
4 - SERVICING - MAINTENANCE
4.1 - Safety measures
Servicing or troubleshooting must be
carried out strictly in accordance with
instructions so as to avoid the risk of
accidents and to maintain the machine in
its original state.
All such operations performed on the
alternator should be undertaken by
personnel trained in the commissioning,
servicing and maintenance of electrical
and mechanical components, who must
wear personal protective equipment
appropriate for mechanical and electrical
hazards.
Before any intervention on the machine,
ensure that it cannot be started by a manual
or automatic system and that you have
understood the operating principles of the
system.
Warning : During and after running, the
alternator will reach temperatures hot
enough to cause injury, such as burns.
4.2 - Routine maintenance
• Checks after start-up
After approximately 20 hours of operation,
check that all xing bolts on the machine are
still tight, plus the general state of the
machine and the various electrical
connections in the installation.
• Electrical servicing
Commercially-available volatile degreasing
agents can be used.
Do not use: trichlorethylene, perchlo-
rethylene, trichloroethane or any alkaline
products.
These operations must be performed at a
cleaning station, equipped with a
vacuum system that collects and ushes
out the products used.
The insulating components and the
impregnation system are not at risk of
damage from solvents. Avoid letting the
cleaning product run into the slots.
Apply the product with a brush, sponging
frequently to avoid accumulation in the
housing. Dry the winding with a dry cloth. Let
any traces evaporate before reassembling
the machine.
• Mechanical servicing
Cleaning the machine using water or a
highpressure washer is strictly prohi-
bited. Any problems arising from such
treatment are not covered by our
warranty.
Degreasing: Use a brush and detergent
(suitable for paintwork).
Dusting: Use an air gun.
If the machine is tted with air inlet and outlet
lters, the maintenance personnel should
clean them routinely at regular intervals. In
the case of dry dust, the lter can be cleaned
using compressed air and/or replaced if it is
clogged.
After cleaning the alternator, it is essential to
check the winding insulation (see sections
3.2 and 4.5).
WARNING
WARNING

12
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
4.3 - Bearings
The bearings are permanently greased Approximate life of the grease (depending on use) = 20,000
hours or 3 years.
4.4 - Mechanical defects
Fault Action
Bearing
Excessive overheating of one or
both bearings
(bearing temperature 80°C above
the ambient temperature)
- If the bearing has turned blue or 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 ow (inlet-outlet) partially clogged or hot air is being
recycled from the alternator or engine
- Alternator operating at too high a voltage (>105% of Un on
load)
- Alternator overloaded
Vibrations
Too much vibration
- Misalignment (coupling)
- Defective mounting or play 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
signicant impact, followed by
humming and vibration
- System short-circuit
- Misparalleling
Possible consequences
- Broken or damaged coupling
- Broken or bent shaft end
- Shifting and short-circuit of main eld
- Fan fractured or coming loose on shaft
- Irreparable damage to rotating diodes/AVR, surge suppressor

13
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
4.5 - Electrical faults
Fault Action Effect Check/Cause
No voltage
at no load on
start-up
Connect a new
battery of 4 to 12
volts to terminals
F1 and F2,
respecting the
polarity, for 2 to 3
seconds
The alternator builds up and
its voltage is still correct
when
the battery is removed
- Lack of residual magnetism
The alternator builds up but
its voltage
does not reach the rated
value when
the battery is removed
- Check the connection of the voltage reference
to the AVR
- Faulty diodes
- Armature short-circuit
The alternator builds up but
its voltage disappears when
the battery is removed
- Faulty AVR
- Field windings open circuit (check winding)
- Revolving eld coil open circuit (check the
resistance)
Voltage too
low
Check the drive
speed
Correct speed
Check the AVR connections (AVR may be faulty)
- Field windings short-circuited
- Rotating diodes burnt out
- Revolving eld coil short-circuited
- Check the resistance
Speed too low Increase the drive speed (do not touch the AVR
voltage pot. before running at the correct speed)
Voltage too
high
AdjustAVR voltage
potentiometer Adjustment ineffective Faulty AVR
Voltage
oscillations
Adjust the
AVR stability
potentiometer
- Check the speed: possibility of cyclic
irregularity
- Loose connections
- Faulty AVR
- Speed too low when on load
Voltage
correct at no
load and too
low when on
load
Run at no load and
check the voltage
between F1 and
F2 on the AVR
Voltage between F1 and F2
(DC)
SHUNT < 20V
- Check the speed
Voltage between F1 and F2
SHUNT > 30V
- Faulty rotating diodes
- Short-circuit in the revolving eld coil. Check
the resistance.
- Faulty exciter armature. Check the resistance.
Voltage
disappears
during
operation
Check the AVR,
the surge
suppressor,
the rotating
diodes, and
replace any
defective
components
The voltage does not return
to the rated value
- Exciter winding open circuit
- Faulty exciter armature
- Faulty AVR
- Revolving eld coil open circuit or short-
circuited

14
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
• Checking the winding
You can check the winding insulation by
performing a high voltage test. In this case,
you must disconnect all AVR wires.
WARNING
Damage caused to the AVR in such
conditions is not covered by our
warranty.
• Checking the windings and rotating
diodes using separate excitation
During this procedure, make sure that
the alternator is disconnected from any
external load and inspect the terminal
box to check that the connections are
fully tightened.
1) Stop the unit, disconnect and isolate the
AVR wires.
2) There are two ways of creating an
assembly with separate excitation.
Assembly A: Connect a 12 V battery in
series with a rheostat of approximately
50 ohms - 300 W and a diode on both exciter
eld wires (5+) and (6-).
6 - 5 +
1A diode
12V battery
Rh. 50 -300W
-
+
A
SSEMBLY A
Field
Assembly B: Connect a “Variac” variable
power supply and a diode bridge on both
exciter eld wires (5+) and (6-).
Both these systems should have
characteristics which are compatible with
the eld excitation power of the machine
(see the nameplate).
3) Run the unit at its rated speed.
4) Gradually increase the exciter eld
current by adjusting the rheostat or the
variac and measure the output voltages on
L1 - L2 - L3, checking the excitation voltage
and current at no load (see the machine
nameplate or ask for the factory test report).
When the output voltage is at its rated value
and balanced within 1% for the rated
excitation level, the machine is in good
working order. The fault therefore comes
from the AVR or its associated wiring (ie.
sensing, auxiliary windings).
1A diode
-
+
6 - 5 +
Variac AC
220V
DC
12V
50
60
70
80
90
100
40
30
20
10
0
ASSEMBLY BField
• Checking the diode bridge
A diode in good working order should allow
the current to ow only in the anode-to-
cathode direction.
Anode Cathode
+-
-
C
A
+
-
C
A
+

15
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
4.6 - Dismantling, reassembly
During the warranty period, this operation
should only be carried out in an approved
workshop or in our factory, otherwise the
warranty may be invalidated.
Whilst being handled, the machine
should remain horizontal (rotor not
locked when moved). Check how much
the machine weighs before choosing the
lifting method.
• Tools required
To fully dismantle the machine, we
recommend using the tools listed below:
- 1 ratchet spanner + extension
- 1 torque wrench
- 1 set of at spanners: 7, 8, 10, 12 mm
- 1 socket set: 8, 10, 13, 16, 18, 21, 22,
24 mm
- 1 Allen key: size 5 (eg. Facom: ET5), size 6
(ET6), size 10 (ET10, size 14 (ET14)
- 1 T20 and T30 TORX bit
- 1 puller (U35)/(U32/350)
• Bolt tightening torque
See section 5.4.
• Access to diodes
- Remove the air intake grille [51].
- Check all 3 modules using an ohmmeter or
a battery lamp.
- Ret the modules.
- Ret the air intake grille [51].
• Access to connections and the
regulation system
The terminals are accessed directly by
removing the terminal box lid [48].
• Replacing the NDE bearing on single-
bearing machines
- Dismantling
- Remove the terminal box lid [48].
- Unscrew the xing clamps on the power
output cables, remove the connector from
the exciter.
- Remove the 4 nuts on the tie rods.
- Remove the NDE shield [36] using a puller:
eg. U.32 - 350 (FACOM).
- Remove the antifriction bearing [70] using
a bolt puller.
- Reassembly
- Heat the inner slipring of a new bearing by
induction or in a drying oven at 80°C (do not
use an oil-bath) and t it to the machine.
- Place the preloading wavy washer [79] in
the shield and t a new O ring seal [349].
Ret the NDE shield and pass the bundle of
wires between the top bars of the shield.
- Ret the xing clamps on the cables, the
R 791 module and the exciter connector.
- Replace the terminal box lid [48] and also
the earth continuity bolt [29].
WARNING

16
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
Rotor
NDE shield
Threaded rod
When dismantling the shields, you will
need to change the antifriction bearings,
the “O” ring seal, the preloading (wavy)
washer and adhesive paste.
• Accessing the main eld and stator
- Dismantling
Follow the procedure for dismantling the
bearings.
- Remove the coupling disc (single-bearing
alternator) and insert a tube of the
corresponding diameter on the shaft end.
- Rest the rotor on one of its poles, then slide
it out. Use the tube as a lever arm to assist
dismantling.
- After extraction of the rotor, be careful not
to damage the fan or dismantle it.
- Remove the revolving eld coil (rotor) and
place on special V-shaped supports.
NOTE: If intervention is required on the
revolving eld coil (rewinding,
replacement of components), the rotor
assembly must be rebalanced.
- Reassembling the revolving eld coil
- Follow the dismantling procedure in reverse
order.
Take care not to knock the windings when
retting the rotor in the stator.
- Ret the fan with its xing bolts on the hub.
Follow the procedure for retting the
bearings.
4.7 - Table of characteristics
Table of average values:
Alternator - 4 poles - 50 Hz - Winding n°6S
The voltage and current values are given for
no-load operation and operation at rated
load with separate eld excitation. All values
are given at ± 10% (for exact values, consult
the test report) and are subject to change
without prior warning.
• Three-phase: 4-pole SHUNT excitation
Resistances at 20 °C (Ω)
Type L/N stator Rotor Field coil Armature
A 0.0674 2.066 11.65 0.423
B 0.0674 2.066 11.65 0.423
C 0.0503 2.354 11.65 0.423
D 0.0503 2.354 11.65 0.423
E 0.0338 2.893 12.94 0.459
H0.0338 2.893 12.94 0.459
J 0.0290 3.145 12.94 0.459
K 0.0239 3.433 12.94 0.459
Field excitation current i exc (A)
400V - 50 Hz
“i exc”: excitation current of the exciter eld
Type No load At rated load
A 0.86 2.58
B 0.86 2.98
C 0.80 2.71
D 0.80 3.09
E 0.67 2.55
H0.67 2.79
J 0.66 2.81
K 0.68 2.85
WARNING

17
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
• Dedicated single-phase M: 4-pole
SHUNT excitation - 50 Hz
Resistances at 20 °C (Ω) - Series
connection
Type L/L stator Rotor Field coil Armature
C 0.024 2.354 11.65 0.423
D1 0.019 2.642 11.65 0.423
J 0.019 3.145 12.94 0.459
Field excitation current i exc (A)
230V - 50 Hz
“i exc”: excitation current of the exciter eld
Type No load At rated load
C 0.74 1.51
D1 0.71 1.49
J 0.62 1.33
• Dedicated single-phase M1: 4-pole
SHUNT excitation - 60 Hz
Resistances at 20 °C (Ω) - Series
connection
Type L/L stator Rotor Field coil Armature
C 0.017 2.354 11.65 0.423
D1 0.012 2.642 12.94 0.459
E 0.013 2.893 12.94 0.459
K 0.008 3.433 12.94 0.459
Field excitation current i exc (A)
240V - 60 Hz
“i exc”: excitation current of the exciter eld
Type No load At rated load
C 0.91 1.84
D1 1.05 2.09
E 0.59 1.67
K 0.66 1.49
• Table of weights
(values given for information only)
Type Total weight (kg) Rotor (kg)
A 262 108
B 262 108
C 295 122
D/D1 295 122
E 368 155
H368 155
J 398 166
K 433 182
After operational testing, it is essential to
replace all access panels or covers. Don’t
forget the bolt (29) earth continuity.

18
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
5.2 - Technical support service
Our technical support service will be pleased
to provide any additional information you
may require.
When ordering spare parts, you should
indicate the complete machine type, its
serial number and the information given on
the nameplate.
Address your enquiry to your usual contact.
Part numbers should be identied from the
exploded views and their description from
the parts list.
Our extensive network of service centres
can dispatch the necessary parts without
delay.
To ensure correct operation and the safety
of our machines, we recommend the use of
original manufacturer spare parts.
In the event of failure to comply with this
advice, the manufacturer cannot be held
responsible for any damage.
After operational testing, it is essential
to replace all access panels or covers.
5 - SPARE PARTS
5.1 - First maintenance parts
Emergency repair kits are available as an
option.
They contain the following items:
SHUNT repair kit 4941330
Voltage regulator R120 -
Diode set assembly -
-
Single-bearing kit 4879454
NDE bearing -
‘O' ring seal -
Preloading wavy washer -
5.3 - Accessories
• Space heater for use when stopped
The space heater must run as soon as the
alternator stops. It is installed at the rear of
the machine. Its standard power is 100W
with 220V or 100W with 110V on request.
Warning: the power supply is present
when the machine has stopped.

19
2017.01 / f
Electric Power Generation
343
70 79
90
51
36
48
29
1
124
144
199
347
100
107
91
37
198
4
325
15
16
30
31 32
40
322
323
33
49
28
349
320
Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
5.4 - Exploded view, parts list and tightening torque
• Single bearing, SHUNT

20
2017.01 / f
Electric Power Generation Installation and maintenance
TAL 044
Low Voltage Alternators - 4 pole
5226 en -
Ref. Qty Description Bolt
Ø
Torque
N.m Ref. Qty Description Bolt Ø
Torque
N.m
1 1 Stator assembly - - 79 1 Preloading (wavy)
washer - -
4 1 Rotor assembly - - 90 1 Exciter eld (stator) - -
15 1 Fan - - 91 4 Fixing bolts M6 10
16 6 Fixing bolts M6 5 100 1 Exciter armature
(rotor) - -
28 1 Earth terminal M6 10 107 1 Diode support ring M5 6
29 1 Earth continuity bolts M6 10 124 1 Terminal block M6 5
30 1 Drive end (DE) shield - - 144 1 Terminal box - -
31 8 Fixing bolts M12 69 198 1 Voltage regulator
(AVR) M5 3.6
32 1 S.A.E. adaptor ring - - 199 1
Interference
suppression module
(RFI kit)
M5 6
33 2 Protective guard M6 5 320 1 Coupling sleeve - -
36 1 Non drive end (NDE)
shield - - 322 2 Coupling discs - -
37 4 Tie rod M14 90 323 8 Fixing bolts M16 320
40 2 Plastic cover - - 325 - Spacer shims - -
48 1 Terminal box lid - - 343 3 Diode bridge
assembly M5 3
49 10 Terminal box bolts M5 5 347 1 Surge suppressor
(+ PCB) M6 4
51 2 Air intake guard M5 3.6 349 1 O ring seal - -
70 1 Non drive end (NDE)
bearing - -