Answer / rajan

U0 * 4 = 33/ 1.732

= 19.05 * 4
= 76KV

Answer / dhanraj

For 33 Kv cable DC hi pot test can be done like (2*E+1)1.414
here E=Voltage , 1.414 is the root 2 value.
Now (2*33+1)=67Kv
Then 67*1.414=94.738 Kv this is 100% of cable test.
In manufacturing factory they will test up to 80% of the voltage in that 100% (94.73*0.8)=75.79 Kv.
But in consumer side they will test up to 80% of voltage that injected in the factory voltage (75.79*0.8)=60.64 Kv.
Now 60.64 Kv is apply for 3 mins maximum.

Answer / michael aliganga

CABLE FACTORY AC TEST VOLTAGE =2E+1kV= 2X35+1= 71kV
DC HIPOT TEST:
CABLE INSTALLATION TEST DURING AND AFTER = ET= EF X 1.8 X 0.8
ET = 71 X 1.8 X 0.8 = 102kV, ICEA DC FIELD TEST VOLTAGE
(ICEA S-97-682) IS 100 kV FOR 35 KV SHIELDED POWER CABLE.

EF=CABLE MANUFACTURERS RECOMMENDED FACTORY AC TEST VOLTAGE
IF NOT AVAIABLE USE 2E+1KV
1.8 AC TO DC CONVERSION FACTOR (QUITE COMMON)
0.8 CONVERSION FACTOR FOR DERATING FROM FACTORY TESTING TO
ACCEPTANCE TESTING.

Answer / manohar

Hipot test conduct for 33kV cable is 1.5 times of rating
voltage in DC(49kV approx will be apply for 1 minute.)

Answer / martin thomas

Iec code
Ac= (2 x e) 1
Dc={(2 x e) 1} x 1.414
1.414=sqrt (2)
E= rated voltage

Aramco std

Dc =4 x u
U= phase voltage

Answer / b.gusain

Uo X 4 as per ICE

Answer / chandan gupta

75.790 kv dc

Answer / a.shiva krishna

AC Hipot test voltage = Nominal input voltage * 2 + 1000
DC Hipot test voltage = AC Hipot test voltage * 1.414
for 33kv
ac hipot v/g = 33000*2+1000 = 67kv
dc hipot v/g = 67000 * 1.414 = 95kv

Answer / raveendra

(2E+1)=67 kV FOR AC HIPOT ( 1 minute test)
67*1.7 = 113.9 DC HIPOT ( i minute test)

for aged cables generally we will apply 65% of the above

Answer / sharafuddeen

AS PER IEEE 400.1 ,THE DC TEST VOLTAGE SHOULD BE 100KV FOR
A 35 KV CABLES.AND THERE IS NO A PARTICULAR FORMULA TO
CALCULATE THE TEST VOLTAGE.IT SHOULD BE AS PER THE
STANDARDS AS PER WHICH THE CABLES MANUFACURED.

TRANAFORMER RATING 500 KVA,33KV/433, SECONDARY SIDE SWITCHED ON ONLY CAPACITOR LOAD 140 AMS, PRIMARY SIDE HOW MUCH VOLTS INCREASE?

1 Answers   BPL,

what convarts RRA in alternator ,AC to DC or DC to AC,

1 Answers   Birla,

Name one of major transformer company in KSA ?

0 Answers  

What is the power factor of a transformer at no load?

0 Answers  

DRAW THE DIFFERENCE BETWEEN GROUND AND NEUTRAL IN BOTH SINGLE PHASE AND THREE PHASE?

2 Answers  

in india why 50 hz and 220 volt taken as standard rating for equipments whereas in US 100hz and 110v is consided as standard rating.is this method save power.

5 Answers   Wipro,

WHY IS THE EARTH FAULT CURRENT ALWAYS LESS THAN THE NORMAL CURRENT??

0 Answers   Teil,

I HAVE A 50A MCCB AS PER DESIGN LINE WIRE CONNECT UPWORD SIDE AND LOAD IS CONNECTED TO DOWNWARD SIDE TO THE MCCB.IF NOW ANY ONE CHANGE SUPPLY & LOAD(WISEVERSA) WHAT HAPPENS ? DOES MCCB OPERATION OR WORKING FUNCTION NORMAL IF YES THAN WHY THERE ARE MARKED LINE & LOAD ON MCCB.

0 Answers   HCL, TCS,

WHAT IS THE DIFFERENCE BETWEEN GENERAL INVERTER AND SOLOR INVERTER TELL ME PLZ

0 Answers   Epcon,

why are you use the crgo core lamination in transformer

6 Answers  

which will glow brighter?bulb 1 (110v,100w) and bulb 2 (230v.200w) series connection

6 Answers   EnPower India,

1.What is the maximum transmission voltage in india & where it is located? 2.more information about indian power scenario.

4 Answers