# Shared Flashcard Set

## Details

Electrical Systems TEST 1
Northwest Lineman College ES TEST 1 review
40
Other
01/14/2015

Term
 Alternating Current (AC)
Definition
 Power that is produced by rotating a magnetic field near a conductor. Voltage changes direction at a certain rate. US is 60 cycles per second
Term
 Amp or Amperage (A)
Definition
 unit of measure for the flow of electrons.
Term
 I
Definition
 letter that represents amp in math formulas
Term
 Conductor
Definition
 any material that allows current to flow with no resistance
Term
 Direct Current
Definition
 flow of electrical energy stays the same rate. Voltage stays constant
Term
 Fault Current
Definition
 an excessive current flow in a circuit caused by damage, basically a short circuit.
Term
 Hertz (hz)
Definition
 unit of measure for frequency.
Term
 Insulator
Definition
 non conductive material that is used to isolate electrical energy from ground
Term
 Kilovolt (kV)
Definition
 unit of measure for 1,000 volts
Term
 Neutral
Definition
 conductor that provides a ground reference for a load
Term
 Ohm
Definition
 unit of measure for the amount of resistance in electrical circuit
Term
 Phase
Definition
 conductor that supplies power to the load
Term
 Source
Definition
 point at which power is produced. In electrical system usually indicates direction of generators.
Term
 Volt (V)
Definition
 unit of measure for electrical pressure
Term
 Watt (W)
Definition
 unit of measure for electrical power
Term
 Generating facilitytramsissionsubtransmissiondistributionsubstations
Definition
 5 elements of electrical system
Term
 Circuit
Definition
 compliation of conductors and electrical components that allow current to pass from a source to load
Term
 Demarcation Point
Definition
 pin pointed location in the Electrical System in which there is a change in ownership
Term
 kilovolt Ampere (kVA)
Definition
 unit of measure for the amount of power that can be delivered to a load
Term
Definition
 point which power is consumed
Term
 Mutual Induction
Definition
 ability of one coil of conductor to induce voltage into another coil of conductor
Term
 Parallel
Definition
 circuit that provides more than one path for current to flow
Term
 potential
Definition
 Voltage. Electrical systems __________ measured between 2 points of different values
Term
 series
Definition
 basic circuit configuration in which there is only one path for the current to flow
Term
 transformation
Definition
 point in an electrical system in which voltage changes from one level to another
Term
 Generation
Definition
 13.8Kv-24kV
Term
 transmission
Definition
 230kV - 765kV
Term
 subtransmission
Definition
 138kV - 44kV
Term
 distribution
Definition
 2kV-34.5kV
Term
 Grid
Definition
 network of transmission lines throughout North America
Term
 NERC
Definition
 North American Electric Reliability Corporation
Term
 Generating Facility
Definition
 where power is stepped up
Term
 TransmissionSub-TransmissionDistribution
Definition
 where power is stepped down
Term
 6 - 9 %
Definition
 percentage of how much power AC loses
Term
 2 - 3 %
Definition
 percentage of how much power DC loses
Term
 Sub - Transmission
Definition
 Delivers medium blocks of powerCan feed large industrial customers directly
Term
 Distribution
Definition
 Delivers safe, lower level power to customer through transformers
Term
 Distribution
Definition
 last place in system where power is stepped down
Term
 1. Change voltage levels2. Connect or disconnect lines or equipment3. Control flow of power by adjusting voltage and current
Definition
 Functions of Substation
Term
 SteamHydroelectricCombustion EngineCombustion TurbineWind
Definition
 5 Generation stations
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