Interested to Buy Any Domain ? << Click Here >> for more details...
How to calculate HV Cable Sizing & what are the factors to
be considered for selection?.
- 2 Answers
- 28832 Views
- I also Faced
- E-Mail Answers
Answer Posted / ashish tiwari
The HV cbale size shall be base on the fault level on HV
side. Like 18.4KA fault current for 11 KV supply & 21.34 KA
fault current for 33 KV supply. We can calculate the HV
cable
BY USING FORMULA ISH = K x A/( sq. root of T)
Where,
ISH :SHORT CIRCUIT CURRENT IN KA (r.m.s.)
T :DURATION OF SHORT CIRCUIT CURRENT IN SECONDS
A :AREA OF ALUMINIUM CONDUCTOR IN MM2
K :IS A CONSTANT = 0.094 for aluminium
ISH x Sq.rootT 18.4 x Sq. root 1
A = ------------ = ------------
K 0.094
= 195.7 sq.mm
HENCE 3 C x 240 SQ.MM XLPE (AL) CABLE IS REQUIRED FOR
INCOMING SIDE AS WELL AS OUTGOING SIDE OF 11 KV SUPPLY.
| Is This Answer Correct ? | 32 Yes | 19 No |
Post New Answer View All Answers
Is there any type of starter for DC motor other than two point,Three point and Four point starters?
how can i find cable size from current rating?
How to calculate of maximum demand if given 628kw, 785kva, 0.8 p.f.
what is the power factor used by the PHCN in nigeria? 2. what is the difference between an alternator and generator. 3. Generation of poweris in KV but how is transmission is in MW. 4.If the transmission of power is 20,000MW how can it be increaesed to 80,000MW
Why the efficiency of a three-phase induction is the motor is less than that of a three-phase transformer?
which cable is used for 15 Hp monoblock pump 3phase and service wire Distance is 210 feet please tell me cable size Armaured
how can we say that stator magnetic field rotates with synchronous speed?can we derive?
What is servo motor? what is its purpose?
What are the components of feedback control system?
Why it is necessary to isolate fire fighting when you are taking shutdown for lv board.
What are the internal and external faults?
why is the conservator tank painted white on the transformer
what is the main difference between power devices and signal devices
features of hbc fuses
How do we find the rating of a transformer, if it got burnt badly.
