AVR R250 4548c_en

2
1 - Description R 250 A.V.R. FOR SHUNT ALTERNATORS 2 - Operation range Operation mode : Standalone 3 - Main feature and characteristics - Voltage regulation : ± 0.5 %. - U/F function. - LAM function. - Quick response : 500 ms. - Nominal excitation current : 5A. - Maximum excitation current : 7A during 10 s. - Supply range / voltage detection : 85 to 139 V (50/60Hz). - Protection : fuse 8A. LAM Function R 250 A.V.R. Ref : 4548en-2014.02/c Page 1 R 250 is an analog A.V.R. with power controled by transistors. It is designed for small alternators with a SHUNT excitation. R 250 controls the excitation current in order to maintain the output voltage of the alternator. R 250 is performant in terms of voltage regulation, simple to set , to use and is reliable. It is in compliance with I.E.C. 60034-1 standard and U.L. 508 / C.S.A. approved. 0 1 s 2 s 3 s LAM 0,9 0,8 fN 0 1 s 2 s 3 s UN 0 0,9 0,8 (U/f) 1 s 2 s 3 s 100 % 50 Hz 60 Hz Hz 50 Hz 48 Hz 57 Hz 60 Hz Voltage Knee Knee U/UN Frequency U/F function Variation in the load Load on the shaft (kW) Load shedding due to LAM Max. speed drop with LAM without LAM with LAM Time Time Time without LAM Transient voltage drop Shunt AREP PMG LSA 40 42.3 44.3 46.2 47.2 49.1 50.2 51.2 53.1 54 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Transcript of AVR R250 4548c_en

1 - Description

R 250 A.V.R. FOR SHUNT ALTERNATORS

2 - Operation range

Operation mode : Standalone

3 - Main feature and characteristics- Voltage regulation : ± 0.5 %.- U/F function.- LAM function.- Quick response : 500 ms.- Nominal excitation current : 5A.- Maximum excitation current : 7A during 10 s.- Supply range / voltage detection : 85 to 139 V (50/60Hz).- Protection : fuse 8A.

LAM Function

R 250 A.V.R.

Ref : 4548en-2014.02/c Page 1

R 250 is an analog A.V.R. with power controled bytransistors.It is designed for small alternators with aSHUNT excitation.R 250 controls the excitation current in orderto maintain the output voltage of the alternator.R 250 is performant in terms of voltage regulation,simple to set , to use and is reliable.

It is in compliance with I.E.C. 60034-1 standardand U.L. 508 / C.S.A. approved.

0 1 s 2 s 3 s

LAM

0,9

0,8

fN

0 1 s 2 s 3 s

UN

0

0,9

0,8

(U/f)

1 s 2 s 3 s

100 %

50 Hz 60 Hz Hz

50 Hz

48 Hz

57 Hz60 Hz

Voltage

Knee

Knee

U/UN

Frequency

U/F function

Variation in the load

Lo

ad

on

th

e s

ha

ft (

kW

)

Load shedding due to LAM

Max. speed drop with LAM

without LAMwith LAM

Time Time Time

without LAM

Transient voltage drop

Shunt

AREP

PMG

LSA 40 42.3 44.3 46.2 47.2 49.1 50.2 51.2 53.1 54

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

Ref : 4548en-2014.02/c Page 2

5 - Connexion and setting

Settings are done through the A.V.R.

- Potentiometer P1 : voltage setting.- Potentiometer P2 : stability setting.- Strap ST3 : frequency selection.- Jumper : frequency, U/F function, LAM function- Potentiometer ST4 : remote voltage setting.

R 250 A.V.R.

4 - Operation conditions- Operating temperature range : - 40° C à + 65° C.- Storage temperature range : - 55° C à + 85° C.- Hygrometry : 98%.- Maximum choc : 9 g on 3 axis.- Vibrations : less than 10 Hz , 2 mm peak magnitude. From 10 Hz to 100 Hz : 100 mm/s, below 100 Hz : 8g.

4 x holes Ø 5.8 x 50 x 115 mm

140

mm

75 mm

R 250

VO

LT

FRE

Q. &

L.A.M

. CO

NFIG

.

ST

AB

F1 Slow fuse 250V 8 A

P1 Voltage

P2

110 E+ E-0V

09

87 6 5 4

321

o1

2

3

56

7

9

8

4

60Hz

65Hz

57Hz

47.5Hz 50HzKNEE

SPECIAL

LAM

OFF

OFF

13%

13%

25%

25%

LAM

KNEE

KNEE

LAM OFF

LAM OFF

LAM OFF

External potentiometerfor voltage adjusting

ST4 Option

Frequency selector 50 Hz / 60 Hz , U/F functionand LAM functionStability