Description
SIEMENS
TYPE: 6GA2 490-0A
AUTOMATIC VOLTAGE REGULATOR
F.NR.HG 122558
The Siemens 6GA2 490-0A (122558) is an automatic voltage regulator and forms part of the automatic voltage regulator system on a marine generator. It controls the excitation current supplied to the alternator field, holding terminal voltage at its intended value as the electrical load on board varies. Acting as the regulating element between generator and switchboard, it has a direct bearing on the quality of power reaching motors, lighting and navigation equipment. This unit is supplied in used condition.
Key Features
✓ Type 6GA2 490-0A
✓ Factory number F.NR.HG 122558
✓ Automatic voltage regulator function
✓ Controls alternator excitation current
✓ Holds generator terminal voltage under changing load
Marine Applications
✓ Excitation control on main diesel generator alternators
✓ Voltage regulation for ship service generator sets
✓ Generator supply to the main switchboard
Technical Support
Prota Marine provides technical support, repair and onboard installation for the automatic voltage regulator unit and the wider automatic voltage regulator system. Fault diagnosis covers problems such as voltage drift or failure to build up voltage, and our engineers also support commissioning on board.
