Answer / silamparasan p.

Basically the HT cable is used for transmission line only
not in distribution line. Because we are using delta
connection (Three phase Three wire system) for transmission
and star connection (Three phase Four four wire system). So
that's why the HT cables have three cores only.

Answer / hemang

Basically the HT cable is used for transmission line only(
delta connection only)
not in distribution line(star connection)
(Three phase Three wire system) for transmission
and star connection (Three phase Four four wire system). So
that's why the HT cables have three cores only.

Answer / sanjay chauhan

Basically the HT cable is used for transmission line only
not in distribution line. Because we are using delta
connection (Three phase Three wire system) for transmission
and star connection (Three phase Four four wire system). So
that's why the HT cables have three cores only.

Answer / superjyoti

HT cables are rated at 1000v to 11kv.This is the range of
transmission voltage.In normal transmission line three
conductor are required.Electrical power is generated at
power plant(11kv normally),then stepped up by transformers
to transmit power to far substation.The secondary winding
of these transformers are in delta connection.

Whereas LT cables are rated up to 1000kv used for
distribution purpose.they are generally of 3.5 core,4 core
etc.three are for phase one for neutral.In the distribution
transformer secondary winding is generally star
connected.so we get 3 core 4 wire o/p(1 wire for neutral)

Answer / ahmed

beacuse we using delta star connection so the incoming will
be 3 core for delta(3 phse

Answer / ramanharikrishnan

HT line means contaning of three phase only(R,Y,B). There
is no Neutral.That is what HT cables having only 3 Cores
with armouring for earthing.

Answer / sameer sane

Its very much economical to transmit power by using delta
connections since for very large distances, neutral need
not be used.

Answer / prabhukumar

Delta connection is best suitable for the transmission of
power where as the star connections is for the
distribution.to avoid the long laying of cable for neutral,
basicaly 3 core HT cable used after that through trafo they
will change to thier requirement.
It may result in failure of neutral or week in neatral, in
case of damage or break.

Answer / sai singamala

HT cable is used for high voltage transmission purpose due
to avoid the corrona and losses becose of HT cable 3 core
is used for only transmisson of the voltage without neutral
of the genaretion side or power station.

Answer / narendra mahadik

as per system contain only three phase thats why requirment
is for three core & in system used three core.

For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?

0 Answers   Hormozgan Steel,

What is the difference between bundled conductors and double circuit?

1 Answers   Power Grid,

2 hp motar how many amps taken please show me the formula

4 Answers   Cable Wireless,

KVAR Kilovolt-Ampere-Reactance

2 Answers  

how to modify DOL control panel into Delta Y connection?

0 Answers   ABB, PDCS,

Which motor has high starting torque

2 Answers   Greenko,

what are the names and size of various conductors used in transmission lines

1 Answers   NTPC, Power Grid,

how we calculate capacitor bank mvar for 11 kv distribution networ , and i need releation between capacitor bank with voltage, frequency, current, pf

2 Answers  

how to calculate the capacitor to maintain power factor?

0 Answers   Bosch,

a governer in an Ic engine controls the

0 Answers   Caterpillar,

WHAT KIND OF LIGHTENING PROTECTION SCHEMS CAN BE ADOPTED FOR THE FLAT ROOF OF BIG DIMENSION.

0 Answers  

What is ZCT? it operating principle and how is work with RCCB (residual current circuit breaker)?

4 Answers