EPCC Flashcards
To begin with, three fundamental conditions must exist before a voltage can be produced by magnetism. These conditions are:
- A conductor, in which the voltage will be produced
- A magnetic field in the conductor’s vicinity
- A relative motion between the field and the conductor. The conductor must be moved so as to cut across the magnetic lines of force, or the field must be moved so that the lines of force are cut by the conductor
What is the rating for the SSGTG?
450 VAC
60 HZ
4009 AMPS
2500 KW
3 Phase
.08 PWR Factor
What is considered self-sustained speed of a GTG, and what speed does it occur?
9700 RPM
What are your ADP Permissive?
What do you place the SWBD in Local/Remote IAW?
What are SWBD Logics?
Name the 5 SWBD Safeties?
Reverse Power Relay: Prevents power from flowing backward into the generator.
Automatic Paralleling Device: Synchronizes generators for safe and efficient power transfer.
Fault Current Detector: Detects and isolates electrical faults to prevent damage.
Load Shed (Over Power Relay): Reduces load to prevent generator overload.
Dead Bus Logic (Under Voltage Relay): Ensures proper startup and reconnection of power after a voltage loss.
What net do you man a SWBD casualty?
ABT stands for Automatic Bus Transfer?
In the Navy, Automatic Bus Transfer (ABT) systems are crucial for maintaining continuous power to vital equipment.
Automatically switch critical electrical loads from the normal power source to an alternate source during power failure or abnormal conditions.
Return to the normal source once power is restored, provided the ABT is in auto mode.
Ensure operational readiness and safety by supporting essential systems, such as:
Navigation, communications, and combat equipment.
CRP (Controllable Reversible Pitch) system.
FPM (Fuel Pump Motor).
Fuel pump, Sea Water (SW) pump, and Lube oil system.
Manual Bus Transfer (MBT)?
Allows personnel to manually switch electrical loads between a normal power source and an alternate power source. This process is not automatic and requires an operator to perform the transfer. MBTs are typically used for non-vital equipment, where immediate power restoration isn’t critical, unlike ABTs which handle vital systems automatically.
LVP (Low Voltage Protection)/LVR (Low Voltage Release)
LVP (Low Voltage Protection): A safety feature that prevents equipment from restarting automatically after a power failure. It ensures that machinery remains off until manually restarted, avoiding potential hazards.
LVR (Low Voltage Release): A feature that allows equipment to restart automatically once power is restored, provided the control switch is still in the “on” position.
A ground on the 60 Hz = 440V Equipment
M-1 Check
Start by using the Ground Check Button to detect the presence of a ground. This is a crucial step in identifying grounding issues.
Procedure
Isolate SWBS (Shipboard Electrical System): Begin by isolating the affected section of the electrical system to minimize risk and identify the issue.
Inspect Load Centers: Check load centers systematically for faults or ground indications.
Check Power Panels: Examine power distribution panels to pinpoint where the grounding issue originates.
Inspect PDB (Power Distribution Boxes): Investigate the power distribution boxes for any faults or visible damage.
Examine Equipment: Finally, review connected equipment for any defects or grounding issues.
Definition of a Ground
A ground occurs when a path of electricity unintentionally connects to the hull of the ship, providing a conductive route that can lead to safety hazards or equipment malfunctions.
