Why in Hv transmission line as we see there are generally 6 or more than 4 con

Why in Hv transmission line as we see there are generally 6 or
more than 4 conductor wires are used instead of 4 i.e. 3 for
phase and 1 for neutral wire?????

Question Posted / prateek singh

2 Answers
3996 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Why in Hv transmission line as we see there are generally 6 or more than 4 conductor wires are use..

Answer / siddhant

Transmission lines are generally delta connected, hence they
don't have neutral wire.They are generally of two types
Single Circuit, Double Circuit lines.Single circuit consists
of 3-Phases R,Y,B.Double Circuit just consists of 2 Single
circuit lines.For economizing the cost of transmission lines
it is tried to use as many Double Circuit towers as land
cost to build these towers are increasing day by day.Even 4
circuit towers are also in use at places which have 4x3=12
conductors.Above stands for 33KV,132KV & 220KV transmission
lines. The conductors used are ASCR(aluminum Conductor steel
reinforced) or AAAC(All aluminium alloy conductor).
For 400KV lines each phase consists of 2conductors generally
known as bundled conductors (ACSR/AAAC -Moose variant)i.e
total 6 conductors for Single ckt., 12 conductors for Double
Ckt.

Is This Answer Correct ?

10 Yes

0 No

Why in Hv transmission line as we see there are generally 6 or more than 4 conductor wires are use..

Answer / sudhakar.g

Generally HV transmission lines are like SUSPENSION towers they are very high cost to transmit the supply, In that case it is good to put 6 conductors and also if u saw that means it is generally construct like that on each side with porcelian insulators hanging with conductors....I think the conductor use the HV transmission lines are ACSR-Aluminium conductor steel reinforced....

Is This Answer Correct ?

2 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

I WANT TO KNOW LONGFORM OF CT/PT USEDIN POWER PROJECTS OR HT SWITCH YARD.

7 Answers

how to varied the frequency in transmission line and how i kept it as a constant one?

2 Answers L&T,

How does a clampmeter measures dc current

1 Answers

What is the difference btwn grounding and earthing?

11 Answers HAL,

What is the difference between a fuse and a breaker?

0 Answers

what is the efficiency of thyristor

0 Answers

I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

0 Answers

What is basic fundamental for choosing NGR or NGT for any generator neutral grounding

5 Answers EDF,

What happens to a line-frequency of high-frequency transformer when it is first energized/ re-energize?

0 Answers

what is the multi strand cable size? 0.45mm is area of one strand & 370nos of strand.

1 Answers

Generator,motor and alternator Working principal Please explain easily

0 Answers

what is the different between DC & AC load Line.

1 Answers Emarat,

For more Electrical Engineering Interview Questions Click Here