Answer / ran7it

u can use a hipot kit. for a 33kv cable the voltage 2 b
applied can b determined by formula (2E + 1),,whr E is the
system voltage,so for tis case it comes as 2*33 +1=67kv.
tis 67kv is mostly applied for the first time in factory
testing..after tat only 60-70% of 67kv sud b applied.
the cable has to withstand tis voltage for 1min..

Answer / pracash

45KV voltage must be applied

Answer / prashant

answer 5 is correct

Answer / rod

Answer 5 is correct, the only thing is it is now not common
practice to Hi-pot cables as this can cause damage to it,
PD tests is the normal method of testing.

Answer / john sundararaj

First decide on which type of cable
type of insulation,single core or 3 core
Ans 8 is the right one.Always go by the manufacturers
recommendation.The values differs for each standards and varies for different countries/utilities.Most of them prefer
soak test rather than hipot.

Answer / mc

we have to consider the phase voltage to ground and nature
of material, but for the first test it's every time
manufacture specification as to be follow.

Answer / suresh babu

HI POT test how much KV applied for 33KV Cable and Time

Answer / s bhattacharya

TO DECIDE THE VOLTAGE APPLICABLE FIRST THING TO SPECIFY
TYPE OF CABLE .
1.IF SINGLE CORE 9NEW CABLE)THEN AS PER IEC GO FOR
BILX0.8/1.732 -AC WITH VARIABLE FREQUENCY CONTROL KIT TO
ADJUST THE FREQUENCY AS PER CABLE LENGTH.
FOR CABLES LESS THAN 132kV.

Answer / guest

Cables are naturally made of pvc,so we can apply high
voltage test to the cables and if its in no damage in high
voltage it should be declared good cable.

Answer / blake australia

A lot of HV cables are XLPE not PVC. If you Megger a 33kV
cable with a DC voltage then you may damage the XLPE
semiconductor around the cable.
Industry standard in Australia(although very expensive to
buy one) is to use a VLF (very low frequency) tester to
test the cables. Same principal as mentioned, just uses an
AC waveform (~.1Hz) opposed to a DC waveform.

a new 3ph induction motor doesn't rotates their ratted speed, why ?

2 Answers   Sail,

Neutral CT for 45MVA 132/11 KV YNd11 Transformer. NCT REF CLASS-PS or 5P20 with 20VA burden which is suitable.

1 Answers  

How Can Be Size Of Transformer Corelate With Freqvence?

1 Answers   Essar,

WE are using a 63A MCCB(SIEMENS MAKE) for one of the feeder in LV substation panel.It is supplying to a lighting & power socket DB.Settings in the MCCB is Ir = 63 * 1 , Isd = 8 times of Ir , tsd = 0.5 sec( I2 t off). Sometimes this MCCB is tripping .But no trip in DB MCB. Can anybody tell me reason ? From where i can know about the MCCB settings?

5 Answers  

Who is the first Bangladeshi Everest climber? Where is his home district?

1 Answers  

How to know th details about an electrical Drawing ? Please mention the easy method.

0 Answers   Siemens,

What we change frequency from transformer. yes or no

3 Answers   Intas,

how the calculation is done if the DG set require for the -- -48 to -51v 4000 ah battery set .

1 Answers   BSNL,

what is the difference between RTD & TERMO COUPLE?

1 Answers  

what is the tolerance of electrical frequency for India? it's .5% or 1%?

8 Answers   Engro,

What are the different towers used in 132kv transmission line? what are the differences between the P,R,S towers used in 132KV and detailed explanation

0 Answers  

EXPLAIN THE FOLLWING: (1) BANDWIDTH (2) SELECTIVITY (3) RESONANT FREQUENCY (4) CURRENT MAGNIFICATION

1 Answers