Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
List the different types of panels that can be found in the Anzac msb and give an brief explanation of each |
-generator control panel ability to start, stop, connect and parcel ships gennys -shore control panel used to connect shore to the main bus -main feeder panels house c/b that feed equipment or distribution panels -consumer panels houses that feed load centers and distribution boards -bus bar linking bar houses the cb for the bus bar |
|
|
Con the cbb, unit A1 controls the settings for three adjustable protective functions, what are they? |
-under voltage relay -instaneous short circuit trip -thermally deployed over current trip |
|
|
List three possible current ratings of a cbv |
315a 630a 1000a |
|
|
What are the main differences between a consumer circuit breaker and other types of MSB breakers |
Ccb cannot be racked out and ccb can only be closed manually by the MSB operator, the c and m system only monitors them |
|
|
What equipment controls the load shedding and reverse power protection operation of equipment in the MSB |
Genop |
|
|
What is the common name of the synchronizing lamps control unit |
Sag 21 |
|
|
What equipment is used to prevent nuisance tripping of a cb and state it's tike duration and voltage level |
Time delay unit, voltages under 75% or rated voltage. 1 second deplay |
|
|
What is the SFIG 22 |
Automatic frequency adjuster and closing pluse transmitter |
|
|
What is the main difference in the operation between the pig21 and the sfig22 |
Semi automatic and manual |
|
|
List the four main components of the UPS system contained in a 24v DC panel |
-diode blocking unit -mains rectifier -charging rectifier -batteries |
|
|
What is the purpose of the main rectifier |
Transforms the 400v from the polygon transformer into 24v DC |
|
|
Give a brief description of the diode blocking unit |
Controls the charge of the battery and directs power to the consumers, either the mains or battery's |
|
|
How many panels may a load centre have and what voltages can be expected to be contained |
7 panels 440v 60hz, 440v 400hz, 240v 60hz, 115v 60hz, 115v 400hz, 24 DC |
|
|
How many main load centre's are located on an Anzac frigate |
13 |
|
|
When connecting bonding cables, when should earth straps be connected and disconnected with regards to shore power? |
Before shore power is connected and after it has been disconnected |
|
|
Why is their a need to bond ships to earth alongside |
So that the ship and shore has the same potential difference removing the risk of electric shock |
|
|
What is the nzbr the contains basic shore power reference |
Nzbr 2020 Nzbr 2052 |
|
|
What do the sag 21 lamp configuration mean |
Bright flashing - frequency different Bright steady - frequency identical, phases different Dim glowing - frequency identical, phases identical |
|
|
Explain an alternator |
-prime mover begins to rotate -residual magnetism induces current jn exciter windings -3 phase diode rectifier rectifies Ac-Dc for main field winding -Ac current is induced into main sator winding for 3 phase output -3 phase is tapped off and fed back to exciter for voltage regulation |
