Leroy-Somer R448 Manuale di istruzioni

Thismanualistobegivento

theenduser

3972 en - 05.2008 / e

R448 & R448 V50

A.V.R.

Installation and maintenance

X2 X1 Z2 E+ E- 0V

110 2

R 448

Field

Armature

Slow fuse

250V 10 A

with LAM without LAM

10 Yellow

11 Red

9 Green

12 Black

50Hz 60Hz

ST10

equency

Installation and maintenance

R448 & R448 V50

A.V.R.

3972 en - 05.2008 / e

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

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 - 05.2008 / e

LEROY-SOMER

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.

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.

3972 en - 05.2008 / e

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:

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).

R 448

R 448 V50

Installation and maintenance

R448 & R448 V50

A.V.R.

3972 en - 05.2008 / e

LEROY-SOMER

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

T1 T2 T3

T4 T5 T6

Varistor

5+ 6-

T7 T8 T9

T10 T11 T12

R 448

ST5

ST11

ST2

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

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

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 %

Frequency

Quad

droop

Installation and maintenance

R448 & R448 V50

A.V.R.

3972 en - 05.2008 / e

LEROY-SOMER

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

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

T1 T2 T3

T4 T5 T6

Varistor

5+ 6-

T7 T8 T9

T10 T11 T12

R 448

ST5

ST11

ST2

R731

Option

ST4 Option

T.I.

Option

S1 P1

Ph.1

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 %

Frequency

Quad

droop

Installation and maintenance

R448 & R448 V50

A.V.R.

3972 en - 05.2008 / e

LEROY-SOMER

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

T1 T2 T3

T4 T5 T6

Varistor

5+ 6-

T7 T8 T9

T10 T11 T12

R 448

ST5

ST11

ST2

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

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

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 %

Frequency

Quad

droop

Installation and maintenance

R448 & R448 V50

A.V.R.

3972 en - 05.2008 / e

LEROY-SOMER

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,lossof voltage sensing)

this acts to restore the value of the excitation

currentto1A after 10s.The alternator mustbe

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

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

- Max. excitation current adjustment via

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.

3972 en - 05.2008 / e

LEROY-SOMER

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

50 Hz

48 Hz 57.5 Hz

60 Hz

oltage

Bend

U/U

Frequenc

LAM

48 or 57.5 Hz

0.85 U

Voltage

U/f

50 or 60 Hz

fC fN

Voltag

ST5 disconnected

ST3

Underspeed and LAM

Time

Drop N ≤46 Hz

Drop N > 46 Hz

Installation and maintenance

R448 & R448 V50

A.V.R.

3972 en - 05.2008 / e

LEROY-SOMER

3.4 - Typical effects of the LAM with

a diesel engine with or without a

LAM (U/F only)

3.4.1 - Voltage

3.4.2 - Frequency

3.4.3 - Power

3.5 - R448 A.V.R. options

- Current transformer for parallel operation

of....../ 1A Š 2.5 VA CL 1 (See the diagram

in this manual).

- Voltage transformer (adaptation)

-Remotevoltageadjustmentpotentiometer:

470 Ω, 0.5 W min : adjustment range ± 5%

(range limited by internal voltage

potentiometer P2). Remove ST4 to connect

the potentiometer. (A 1 k Ωpotentiometer

can also be used to extend the adjustment

range).

- R 731 module: detection of 200 to 500V 3-

phase voltage, compatible with parallel

operation. Disconnect ST1 to connect the

module; set the voltage via the

potentiometer.

- R 734 module: detection of 3-phase

current and voltage for parallel operation on

unbalancedinstallations(imbalance>15%)

- R 726 module: regulationsystem changed

to "4-function". (See the maintenance

manual and connection diagram.)

• PF regulation ϕ(2F)

• voltage matching before paralleling (3 F)

• mains connection of alternators already

running in parallel (4F)

- R 729 module: same as R 726 with

additional functions

• detection of a diode fault

• 4/20 mA input

• possibility of kVAR regulation

- Control through DC voltage used

monitoring apply to the terminals for

connection of a potentiometer DC voltage :

• internal impedance 1,5 kΩ

• ± 0,5V enable a voltage setting of 10%.

0,9

0,8

(U/f)

with

LAM Tim

without LAM

1 s 2 s 3 s

Transient voltage drop

Max speed drop

with

LAM

Tim

without

LAM

1 s 2 s 3 s

01 s 2 s 3 s

Tim

LAM

Variation in the loa

Load on the

shaft (kW)

Load shedding due to "LAM"

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