| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-223-SDC
ELECTRICAL POWER AND LIGHTING
SDC FIXES SHALL BE USED ONLY IN COMBAT OR OTHER EMERGENCY CONDITIONS
THE DISCRETION OF THE VESSEL MASTER. DAMAGE SHALL BE REPAIRED
STANDARD MAINTENANCE PROCEDURES AS SOON AS PRACTICABLE.
Section I. GENERAL INFORMATION
9-1. ELECTRICAL POWER. Electrical power is indispensable to the LCU'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. NORMALELECTRICALPOWER
9-2. SUPPLY. Normal electrical power is supplied by two Cummins NT-855-GC2. Marine Generator
Sets. Each generator is rated at 240 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. There
are two shore power connections on the main deck centerline on the forward bulkhead of the deckhouse.
There are two 75-foot lengths of cable supplied with the ship.
Wiring circuits may be severed by blasts, fragments, and structural damage. Wiring repair should only
be accomplished where it is essential for returning to port. Splicing of wires should be done whenever
possible. Open circuits can sometimes be repaired by inserting a new wire (jumper wire) that bypasses the
problem area. If wire is not available in shipboard storage, it may be necessary to salvage wire from non-
essential or inoperative systems.
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.
During flooded conditions, whenever possible the power should be removed from the affected area
from the main or emergency switchboard. Power should not be restored until the water has been removed,
circuits properly dried, and an inspection made to ensure safe electrical conditions.
|
||
|
||
