Reading...
Play button
Play button
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;
26 Cards in this Set
- Front
- Back
|
electrical system is comprised of
|
generation, Transmission, Sub Transmission, Distribution, Substation
|
|
|
Electricity is generated in the range of
|
13,000 to 24,000 Volts
|
|
|
Transmission circuits are connected together in a
|
Grid
|
|
|
NERC
|
North Electric Reliability Council
|
|
|
Sub transmission are most commonly Energized at
|
69kV,115kV,138kV
|
|
|
Distribution is usually Energized
|
below 24 kV or 34.5 kV
|
|
|
Distribution Common operations voltages are
|
7200/12470 volts, 76,200/13200 volts, 12000/20800 volts, 14400/24500 volts,19900/34500 volts
|
|
|
substations primary functions are
|
Change the voltage of circuits. connect or disconnect lines ,control the flow of power
|
|
|
DC is most commonly associated with
|
Batteries
|
|
|
Generation can be provided in the following ways
|
Steam, Hydroelectric, Combustion engine, Combustion Turbine, Wind,Cogeneration, biomass,Resource Recovery,Dispersed micro generation
|
|
|
Commonly used insulators on transmission are
|
polymer suspension insulators,polymer line post insulators,porcelain line post,porcelain suspension insulators
|
|
|
conductors are called
|
sub-conductor
|
|
|
ACSR
|
Aluminum Conductor Steel Reinforced
|
|
|
SCADA
|
supervisor control and data acquisition
|
|
|
equipotential zone Grounds procedures are
|
identify,isolate,test ,ground
|
|
|
Voltage
|
is the electric pressure or electromotive force
|
|
|
Effects of voltage
|
1.)The amount of insulation needed
2.)The separation of conductors 3.) Safe Working Practice. 4.)Types of tools needed to work |
|
|
Amp
|
a measurement of the flow electric current.
|
|
|
Coulomb
|
a quantity measurement of electrons
|
|
|
OMS
|
is the unit of resistance
|
|
|
watts
|
is the measurement of electrical power.
|
|
|
E
|
Voltage
|
|
|
I
|
Amperage
|
|
|
R
|
resistance = oms
|
|
|
EPZ
|
Equipotential Zone Grounding
|
|
|
National Electrical safety code requires Grounds to be
|
a minimum of every 4 miles
|
