Question
Download Solution PDFWhich among the following is the standard voltage used for primary distribution?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFTransmission lines and distribution lines can be discriminated by their operating voltage. The voltage levels of transmission and distribution are given below.
|
Power carrying system |
Voltage level |
|
Primary transmission |
66 kV, 132 kV, 220 kV or 400 kV |
|
Secondary transmission |
33 kV |
|
Primary distribution |
11 kV |
|
Secondary distribution |
400 V |
Important Points:
The differences between transmission and distribution lines are given below.
|
Transmission line |
Distribution lines |
|
It helps in the movement of electricity from the power plant to the substations |
It carries electricity from the substation to the consumer’s end |
|
It carries electricity in three-phase supply system |
It requires a single-phase supply system for carrying electricity |
|
Carries electricity at a very high voltage |
It carries electricity at a very low and safe level |
|
These are thick lines |
These are thin as compared to the transmission line |
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