Description
LS
LEROY SOMER
R438LS/A
AVR – AUTOMATIC VOLTAGE REGULATOR
110 220 380V
FUSES 8A
RAPID/FAST
OPTELEC
OPT 1434
LSR 34-2-0001-B-NF: A
R 438 NS: CEP95290033
1W-470Ω
3PH.
The Leroy Somer R438LS/A is an automatic voltage regulator for shipboard generator sets, part of the vessel’s automatic voltage regulator equipment. It governs alternator field excitation so that generator output voltage stays steady as electrical load varies. The unit is marked 110, 220 and 380 V and 3PH, with 8 A rapid/fast fuses, an Optelec OPT 1434 component and the reference LSR 34-2-0001-B-NF: A. It is offered in New Without Box condition. Within the power plant it sits between the alternator output and the exciter field, closing the voltage control loop.
Key Features
✓ 110, 220 and 380 V markings
✓ Three-phase (3PH) marking
✓ 8 A rapid/fast fuses
✓ Optelec OPT 1434 component
✓ 1W-470Ω resistor marking
Marine Applications
✓ Main diesel generator excitation control
✓ Auxiliary generator set voltage regulation
✓ Harbour generator alternator field control
✓ Emergency generator voltage control
Technical Support
Prota Marine provides technical support, repair and onboard installation for the automatic voltage regulator and the wider automatic voltage regulator system. Our engineers can help with fault diagnosis on excitation and generator voltage problems. Commissioning support is available once the regulator is installed on board.
