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Genset AVR R438C controls the excitation current in order to maintain the output voltage of the alternator.
AVR R438 is performant in terms of voltage regulation, simple to set , to use and is reliable.
It can run without LAM (U/f), or with LAM, selection is done by strap ST5. It is in compliance with I.E.C. 60034-1 standard and U.L. 508 / C.S.A. approved
Operation mode : Standalone
Compatible Alternators:
LSA42.3, LSA43.2, LSA44.3, LSA44.2
R438 AVR CARD FOR SHUNT, AREP or PMG ALTERNATORS
Replace AVR RS437 and R438C Voltage Regulator
Main feature and characteristics for Genset Voltage Regulator R438C
- Voltage regulation : ± 0.5 %.
- U/F function (1).
- LAM function (2).
- Response time : 500 ms
- Nominal excitation current : 5A
- Maximum excitation current : 8A during 10 s.
- Provide range and voltage détection : 95 to 520 V.
- Protection : fuse 8A.
Operation conditions R438 Genset AVR
- Operating temperature range : - 40° C à + 70° 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.
Optional modules compatible
- R 731 : three phase voltage sensing.
- R 734 : 3-phase current and voltage sensing for parallel operation
- R 726 : regulation system changed to “4 - function”
Connexion and setting for R438 AVR:
Settings are done through the R438 AVR
- Potentiometer P1 : Quadrature droop setting.
- Potentiometer P2 : Voltage setting.
- Potentiometer P3 : Stability setting.
- Potentiometer P5 : Excitation ceiling setting.
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