MV BLUEFIN QUALITY MANUAL - Australian Maritime College

Australian Maritime College
INSTALLATION
APPENDIX 2.10
ENGINE ROOM - ELECTRICAL DISTRIBUTION
1. Main Switchboard in E.R. with circuit breakers divided into Essential and Non
Essential panels plus Frig. Compressor and Blast Freezer circuit breakers direct onto
bus bars.
2. Circuit breakers lead to 10 distribution boards with HRC fuses, as well as individual
control boxes.
3. Extra low voltage distribution board with fuses (top) and 24V power pack, 24V bus,
24V emergency power and 24V emergency radio power with volt and ammeters
(lower) are in entrance to wet lab. Emergency battery chargers are on adjoining wall
inside wet lab.
4. HRC fuses kept in extra low voltage cabinet and in log desk in E.R.
DISTRIBUTION BOARDS
DB 1&2: Bridge – 240V Essential
DB 3: Passage outside galley - 415V & 240V Non Essential
DB 4&6: “ “ “ - 240V - “
DB 5: (Lights ) “ “ “ - 240V - Essential
DB 7: Air con/Fan room ? - 415V Non Essential
DB 8: E.R. - 415V Essential
DB 9: E.R. “ “
DB 10: Steering Space “ “
There is more information in a small exercise book “Bluefin Electrical Distribution” in
Chief’s cabin.
FAULT FINDING
1. Fuses and circuit breakers are checked first. Many fuses are not correctly
numbered on the cards inside distribution box doors, so check outlet to see if DB No.
and fuse No. are marked on the outlet or appliance. * NOTE: The D.B. numbers on
the main switchboard may not be correct, so never assume a Dist. board is isolated
by opening the marked circuit breaker, e.g. 2 fuses for wheelhouse lights are located
in DB 1&2, but opening circuit breaker DB 5 isolates power to these fuses.
2. Always check with a meter and remove correct fuse before touching bare wires.
3. Trips on motors are checked next. These are usually found on the 240V controller
connected below the 3 phase contactors.
4. The galley stove has two sets of fuses, one set in DB 3 and another behind S.S.
stove fuses panel in galley.
5. Alternators tripping off board, see S.O.P. No.4, Restore Power.
6. Shore Connection Lead: Kept in Battery Locker. When shore power ammeter
reaches 60–65 amps (30 Kw), board will trip off on wharf at Beauty Point. Reset to
restore power, however best to start alternator if high loads continue.
7. Emergency lights (24V) are marked with a red dot.
Append 2.10 - Electrical.docx 1 of 2
Revised: November 2010