Generators Flashcards
What is a standby generator?
Diesel Generator that is maintained in a “ready to start” condition that can be available upon a loss of utility.
What is magnetic induction?
Magnetization caused by proximity to a magnetic field. The induction of magnetism field or in the magnetic flux set up by a magnetomotive force. Also, the production of an electromotive force across and electrical conductor in a changing magnetic field.
How does a generator make power?
By the rotation of a magnetic field by coils of electrical conductors produces current in the conductors. In the case of a generator producing three-phase alternating current, the rotor is an electromagnet and is directly attached to the prime mover, the diesel generator. The magnetic field is induced in the rotor and the strength of the field is determined by the AVR. The electical conductors are coiled into pairs of windings opposite each other in the stator and are physically spaced 120° apart from one phase winding to the next.
What is the purpose of Run Mode?
Diesel generator is currently running outputting rated voltage and frequency.
What is the purpose of auto mode?
Diesel generator is in standby, ready to start upon a signal from an external plc.
What is the purpose of stop mode?
Diesel generator is not running and will not auto start when called upon.
Where is the generator in the electrical lineup?
Generator is connected via busduct, to the USB Site specific: through a camboard or bolted pressure switch or directly to the MCBG.
What kind of fuel do we use in our generators?
Ultra- Low Sulfur Off-Road Diesel Fuel, Red Dye Number 2 (15ppm Sulfur Maximum)
Describe the principle operation for a diesel engine
Combustion results from heat of compression, atomized fuel, and turbocharged air. IN a 4 stroke engine, one cycle occurs with two rotations of the crankshaft. The combustion cycle consists of an intake stroke, compression stroke, power stroke, and exhaust stroke.
Describe the flow of fuel through the fuel system
belly tank, filters, attached fuel pump, secondary filters (and piriming pump), both bank fuel rails, injectors, return lines through the back pressure regulator, fuel cooler, back to the belly tank.
What is the purpose of the engine controls?
Monitor engine in order to control it and provide protection.
Name two emergency signals for the Generator
Low lube oil pressure, High coolant temperature, Crankcase pressure, reverse power, ruptured basin
Where can you find information for remote monitoring?
Remote alarm panels located in the ER’s, and some key parameters are reported to EPMS progeny
How does the generator control the following electrical parameters?
Voltage, current, frequency
Generator uses the automatic voltage regulator (AVR) to control voltage, load to affect the current, and the governor to affect frequency
What is the purpose of the starter system?
to provide the torque needed to achiece the necessary minimum cranking speed
