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Definition
This system is a 4 wire circuit.
Has 3 phases with a neutral conductor. |
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Definition
| This system that is part of distribution has 3 phases with no neutral. |
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Definition
| What an energized wire is referred to as |
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Definition
| This circuit is composed of three phases and a neutral or just three phases. Also consists of main lines and tap lines. |
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Definition
| Also known as feeder lines. Is the line that comes from substation and tap lines will feed off of. |
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Definition
Feeds off main line to deliver power to customers. Are often identified by smaller equipment
Can be 3 single or v phase |
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Term
| Receive power from sub transmission system to distribute to customers at ideal voltages. |
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Definition
| What is the primary function of distribution |
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Term
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Definition
| Circuit that has power fed from 2 sides which keeps power going incase of a fault |
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Definition
| Circuit with power feeding from only one side |
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Definition
High voltage portion of distribution.
2kV - 34.5kV |
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Definition
Low voltage portion of distribution that runs pole to pole or pad mount to pedestal in underground systems
120-480 volts |
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Term
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Definition
| Low voltage portion system that goes directly to customers meter base |
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Term
Residential
Commercial
Agricultral
Industrial |
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Definition
| Different classifications of utility customers |
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Term
| transmission & sub-transmission |
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Definition
| what 2 forms of power delivery that has no neutral |
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Term
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Definition
what does the lower number represent
7200/12470 |
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Term
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Definition
what does the higher number represent
7200/12470 |
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Term
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Definition
| Utilities are obligated to provide this voltage range to customer. Also what is that percentage |
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Term
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Definition
| what part is phase to phase |
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Term
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Definition
| what part is phase to ground |
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Term
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Definition
| How many phases do circuits always have |
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Term
AC
because it can be transformed |
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Definition
what kind of power is distribution
and why |
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Term
No longer than 50 miles
300 feet |
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Definition
| how long are distribution lines typically and how far apart are the structures on average |
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Term
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Definition
| What are the conductors of a distribution line made out of |
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| Density of the area & types of customers and capability of the circuit |
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Definition
| number of customers on a circuit are determined by what |
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Definition
| customer dwellings are known as |
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Definition
| stores, shopping centers, and medical facilities are what kind of customers |
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Definition
| irrigation pumps, grain storage, and dairies are what kind of customers |
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Definition
| large manufacturing plants, refineries are what kind of customers |
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Definition
| voltage level of the circuit is typically based upon what |
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Definition
| why do customers prefer underground circuits |
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