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 TM 55-1915-200-SDC
CHAPTER 9
ELECTRICAL POWER AND LIGHTING
SDC FIXES SHALL BE USED ONLY IN COMBAT OR OTHER
EMERGENCY CONDITIONS AT THE DISCRETION OF THE VESSEL
MASTER.
DAMAGES SHALL BE REPAIRED BY STANDARD
MAINTENANCE PROCEDURES AS SOON AS PRACTICABLE.
Section I. GENERAL INFORMATION
9-1. ELECTRICAL POWER. Electrical power is indispensable to the LSV's functional effectiveness. Electrical power
furnishes light, runs vital auxiliaries, helps turn the rudders, and operates the radar, radios, and a host of other
equipment.
Section II. NORMAL ELECTRICAL POWER
9-2. SUPPLY. Normal electrical power is supplied by two Stanford/ Newage MSC 434E generators each driven by a
Caterpillar 3406 DITA diesel engine. Each generator is rated at 460 Vac, 250 kW. One generator can be operated by
itself to provide electrical power, or both generators may be run in parallel. These two generators supply power to the
main switchboard, which in turn supplies various equipment, distribution panels, and the emergency switchboard during
normal operation.
Power may also be taken from an off-hull source via a shore power connection which taps into the main
switchboard. An interlock prevents parallel operation of the main generators and shore power.
Section III. POWER DISTRIBUTION
9-3. DISTRIBUTION. The distribution feeders originate at the main switchboard and supply power to distribution panels
or, in some cases, directly to individual auxiliaries. In turn, the power distribution panels distribute to the individual
auxiliaries. FIGURE 9-1 shows normal power distribution.
Section IV. EMERGENCY ELECTRICAL POWER
9-4. SUPPLY. Emergency power is supplied by a Stanford/Newage 234D generator which is driven by a Caterpillar
3304 diesel engine. The emergency generator is rated at 460 Vac, 90 kW, and supplies only the vital equipment which is
fed by the emergency switchboard. FIGURE 9-2 shows emergency power distribution.
9-1
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