Leroy-Somer AVR R448 User manual

Page 1
Instruction Manual
Installation • Operation • Maintenance
Voltage Regulator
Ruitai industry Co.,Ltd.
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.china-avr.com
AVR R448

Thismanualistobegivento
theenduser
3972 en - 02.2008 / d
R448 & R448 V50
A.V.R.
Installation and maintenance
X2 X1 Z2 E+ E- 0V
110 2
2
Z1
+
6-
R 448
F
1
S
T5
Field
Armature
Slow fuse
250V 10 A
with LAM without LAM
10 Yellow
11 Red
9 Green
12 Black
S
T3
50Hz 60Hz
ST10
r
equency

Installation and maintenance
R448 & R448 V50
A.V.R.
2
3972 en - 02.2008 / d
LEROY-SOMER
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.
Our technical support service will be
pleased to provide any additional infor-
mation you may require.
The various operations described in this
manual are accompanied by recommen-
dations or symbols to alert the user to
potential risks of accidents. It is vital that
you understand and take notice of the
following warning symbols.
Warning symbol for an operation
capable of damaging or destroying the
machine or surround-ing equipment.
Warning symbol for general danger to
personnel.
Warning symbol for electrical danger to
personnel.
Note: LEROY-SOMER reserves 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.
WARNING
WARNING
This manual concerns the alternator A.V.R. which you have just purchased.
We wish to draw your attention to the contents of this maintenance manual. By
following certain important points during installation, use and servicing of your A.V.R.,
you can look forward to many years of trouble-free operation.

Installation and maintenance
R448 & R448 V50
A.V.R.
3972 en - 02.2008 / d
LEROY-SOMER
3
CONTENTS
1 - GENERAL INFORMATION................................................................................................5
1.1 - Description...................................................................................................................5
1.2 - Identification...................................................................................................................
2 - SUPPLY .............................................................................................................................5
2.1 - AREP excitation system ..............................................................................................5
2.2 - PMG excitation system................................................................................................6
2.3 - SHUNT or separate excitation system.........................................................................7
3 - R448 A.V.R. .......................................................................................................................8
3.1 - Characteristics .............................................................................................................8
3.2 - Frequency compared with voltage (without LAM)........................................................8
3.3 - LAM (Load Acceptance Module) characteristics .........................................................8
3.4 - Typical effects of the LAM with a diesel engine with or without a LAM (U/F only).......9
3.5 - R448 A.V.R. options ....................................................................................................9
4 - INSTALLATION - COMMISSIONING..............................................................................11
4.1 - Electrical checks on the AVR.....................................................................................11
4.2 - Settings......................................................................................................................11
4.3 - Electrical faults...........................................................................................................14
5 - SPARE PARTS................................................................................................................15
5.1 - Designation................................................................................................................15
5.2 - Technical support service..........................................................................................15
All such operations performed on the A.V.R. should be undertaken by personnel trained
in the commissioning, servicing and maintenance of electrical and mechanical
components.
Copyright 2005 : MOTEURS LEROY-SOMER
This document is the property of :
MOTEURS LEROY-SOMER
It may not be reproduced in any form without prior authorization.
All brands and models have been registered and patents applied for.

Installation and maintenance
R448 & R448 V50
A.V.R.
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LEROY-SOMER
1 - GENERAL INFORMATION
1.1 - Description
The A.V.R. R 448 V50 is delivered in a box
designed to be mounted on a panel with
suspension.
Connexions are made with «Faston»
connectors.
- Operating temperature: - 30°C to +70°C
- Storage temperature: - 55°C to + 85°C
- Shocks on the base: 9g for the 3 axis
- Vibrations: Less than 10Hz: 2mm half
peak amplitude
10Hz to 100Hz: 100mm/s, above 100Hz:
8g
1.2 - Identification
These 2 A.V.R.s have strictly identical
characteristics and dimensions, the
following details distinguish the V50:
- an adjuster dedicated to the alternator
LSA 50.2,
- the elimination of the ST6 jumper (A)
- a white serigraphy (B)
(blue for R 448),
- a label stipulating the type of alternator
(C).
A
R 448
R 448 V50
B
C

Installation and maintenance
R448 & R448 V50
A.V.R.
3972 en - 02.2008 / d
LEROY-SOMER
5
2 - SUPPLY
2.1 - AREP excitation system
For both AREP & PMG excitation systems,
the alternator voltage regulator is the R
448.
With AREP excitation, the R 448 electronic
AVR is powered by two auxiliary windings
which are independent of the voltage
match circuit.
The first winding has a voltage in proportion
to that of the alternator (characteristic
Shunt), the second has a voltage in
proportion to the stator current (compound
characteristic: Booster effect).
The power supply voltage is rectified and
filtered before being used by the AVR
monitoring transistor.
X2 X1 Z2 E+ E- 0V
110 220 380
Z1
T1 T2 T3
T4 T5 T6
Varistor
5+ 6-
T7 T8 T9
T10 T11 T12
R 448
F1
ST5
P5
ST11
ST2
P3
AREP SYSTEM
Field
Armature
MAIN FIELD
Slow fuse
250V 10 A
with LAM without LAM
Excitation
ceiling
knee-point: 65 Hz
open
Response
time
normal
fast
Stability
according voltage
10 Yellow
11 Red
9 Green
12 Black
Aux. windings
STATOR : 6 wires (marked T1 to T6)
STATOR : 12 wires (marked T1 to T12)
ST6 ST1
46.2/47.2
49.1
P2
No ST6 jumper
for R448 V50
4 x holes Ø 5.8
(175 x 115 mm)
200 mm
140 mm
R731
Option
ST4
Option
T.I.
Option
S1 P1
Ph.1
P2
S2
Voltage
Single-
phase
detection
External potentiometer
for adjusting the voltage
in 3-ph. detection ST1 open
3-ph. detection
ST9
AREP/SHUNT
PMG
ST3
50Hz 60Hz
ST10
13 %
LAM
25 %
P1
Frequency
Quad
droop

Installation and maintenance
R448 & R448 V50
A.V.R.
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2.2 - PMG excitation system
With PMG excitation, a permanent magnet
generator (PMG) added to the alternator
supplies the AVR with voltage which is
independent of the main alternator winding.
This is fitted at the rear of the machine and
connected to the R 448 AVR, and the ST9
jumper must be disconnected.
These two principles provide the machine
with a short-circuit current capacity of 3 IN
for 10 s, and good immunity to distortions
generated by the load.
The AVR monitors and corrects the
alternator output voltage by adjusting the
excitation current.
ST6 ST1
46.2/47.2
49.1
P2
No ST6 jumper
for R448 V50
4 x holes Ø 5.8
(175 x 115 mm)
200 mm
140 mm
X2 X1 Z2 E+ E- 0V
110 220 380
Z1
T1 T2 T3
T4 T5 T6
Varistor
5+ 6-
T7 T8 T9
T10 T11 T12
R 448
F1
ST5
P5
ST11
ST2
P3
R731
Option
ST4 Option
T.I.
Option
S1 P1
Ph.1
P2
S2
14 15 16
PMG
PMG SYSTEM
Field
Armature
MAIN FIELD
Slow fuse
250V 10 A
with LAM without LAM
Excitation
ceiling
knee-point: 65 Hz
open
Response
time
normal
fast
Stability Voltage
Single-
phase
detection
External potentiometer
for adjusting the voltage
according voltage
STATOR : 6 wires (marked T1 to T6)
STATOR : 12 wires (marked T1 to T12)
in 3-ph. detection ST1 open
3-ph. detection
ST9
AREP/SHUNT
PMG
ST3 50Hz 60Hz
ST10
13 %
LAM
25 %
P1
Frequency
Quad
droop

Installation and maintenance
R448 & R448 V50
A.V.R.
3972 en - 02.2008 / d
LEROY-SOMER
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2.3 - SHUNT or separate excitation
system
In SHUNT excitation, R 448 A.V.R. is
supplied by main windings (140V - 50/60
Hz) to X1, X2.
The new functions are :
- Parallel operation between alternators
with C.T.
- Parallel operation with the mains with C.T.
and R 726 module
- 3-phase sensing (R 731 module)
- LAM function integrated in the R 448 AVR.
In this case of LSA 42.2, A.V.R. and
module(s) must be installed in the
external control panel.
X2 X1 Z2 E+ E- 0V
110 220 380
Z1
T1 T2 T3
T4 T5 T6
Varistor
5+ 6-
T7 T8 T9
T10 T11 T12
R 448
F1
ST5
P5
ST11
ST2
P3
STATOR : 12 wires (marked T1 to T12)
SHUNT SYSTEM
Field
Armature
MAIN FIELD
Slow fuse
250V 10 A
with LAM without LAM
Excitation
ceiling
knee-point: 65 Hz
open
Response
time
normal
fast
Stability
according voltage
ST6 ST1
46.2/47.2
49.1
P2
No ST6 jumper
for R448 V50
4 x holes Ø 5.8
(175 x 115 mm)
200 mm
140 mm
R731
Option
ST4 Option
T.I.
Option
S1 P1
Ph.1
P2
S2
Voltage
Single-
phase
detection
External potentiometer
for adjusting the voltage
in 3-ph. detection ST1 open
3-ph. detection
ST9
AREP/SHUNT
PMG
ST3 50Hz 60Hz
ST10
13 %
LAM
25 %
P1
Frequency
Quad
droop

Installation and maintenance
R448 & R448 V50
A.V.R.
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3 - R448 A.V.R.
3.1 - Characteristics
- Shunt power supply: max 150V - 50/60 Hz
- Rated overload current: 10A - 10s
- Electronic protection: (in the event of
overload, short-circuit, loss of voltage sensing)
this acts to restore the value of the excitation
current to 1A after 10 s. The alternator must be
stopped (or the power switched off) in order to
reset the protection.
- Fuse: F1 on X1, X2. 10A ; slow - 250V
- Voltage sensing : 5 VA isolated via trans-
former
• 0-110 V terminals = 95 to 140 V
• 0-220 V terminals = 170 to 260 V
• 0-380 V terminals = 340 to 520 V
for other voltages, a transformer should be
used.
- Voltage regulation ± 0.5%
- Normal or rapid response time via jumper
ST2 (see below)
- Voltage adjustment via potentiometer P2 or
apply a DC voltage of ± 1 V on the terminals of
the external potentiometer
- Current sensing: (parallel operation): input
S1, S2 intended for 1 C.T. Š 2.5 VA cl1,
secondary 1A (optional)
- Quadrature droop adjustment via potentio-
meter P1
- Max. excitation current adjustment via P5 :
4.5 to 10A (see below)
- 50/60 Hz selection via ST3 jumper
- ST11 : Knee-point at 65 Hz for Tractelec
application and variable speed.
3.1.1 - Configuration jumpers function
3.1.2 - Setting potentiometers function
Pot.
Delivrery
config. Position Function
Open Closed
ST1 3-ph. Mono Open for module
installation tri detection
ST2 Fast Normal Response time
ST3 50 ou 60 Hz Frequency selection
ST4
External
potentio-
meter
Without Potentiometer
ST5 Without With LAM
closed Alternator LSA 46.2 and
LSA 472
ST6 With open Alternator LSA 49.1
no jumper Alternator LSA 50.2
ST9 Others
(PMG...)
AREP
SHUNT Supply
ST10 13% or 25% LAM voltage drop
amplitude
ST11 65 Hz 48 or
58 Hz
U/f function bend
position
Delivrery
position Pot. Function
0 P1 Quadrature droop ; // operation with C.T.
400V P2 Voltage
Centre P3 Stability
Maxi P5 Excitation current ceiling

Installation and maintenance
R448 & R448 V50
A.V.R.
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3.2 - Frequency compared with
voltage (without LAM)
3.3 - LAM (Load Acceptance
Module) characteristics
3.3.1 - Voltage drop
The LAM system is integrated in the
regulator, as standard it is active (ST5 with
bridge). It can be deactivated by removing
the ST5 bridge. It can be adjusted to 13%
or 25% by means of the ST10 jumper.
- Role of the “LAM” (Load Acceptance
Module):
On application of a load, the rotation speed
of the generator set decreases. When it
passes below the preset frequency
threshold, the LAM causes the voltage to
drop by approximately 13% or 25% and
consequently the amount of active load
applied is reduced by approximately 25%
to 45%, until the speed reaches its rated
value again.
Hence the LAM can be used either to
reduce the speed variation (frequency) and
its duration for a given applied load, or to
increase the applied load possible for one
speed variation (turbo-charged engine).
To avoid voltage oscillations, the trip
threshold for the LAM function should be
set approximately 2 Hz below the lowest
frequency in steady state.
It is advisable to use the LAM at 25% for
load impacts Š 70% of the genset rated
power.
- LAM : action eliminated by cutting the ST5
jumper.
3.3.2 - Gradual voltage return function
During load impacts, the function helps the
genset to return to its rated speed faster
thanks to a gradual increase in voltage
according to the principle:
- If the speed drops between 46 and 50 Hz,
the rated voltage follows a fast gradient as
it is restored.
- If the speed drops below 46 Hz, since the
engine needs more help, the voltage
follows a slow gradient as it returns to the
reference value.
100 %
50 Hz 60 Hz
Hz
50 Hz
48 Hz 57.5 Hz
60 Hz
V
oltage
Bend
U/U
N
Frequenc
y
LAM
U
N
0
48 or 57.5 Hz
0.85 U N
Voltage
U/f
50 or 60 Hz
fC fN
Voltag
e
ST5 disconnected
ST3
P2
Underspeed and LAM
0
Time
Drop N ≤46 Hz
U
Drop N > 46 Hz