Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...


for 644KW load which MCCB should i use

Answers were Sorted based on User's Feedback



for 644KW load which MCCB should i use..

Answer / wareagle

You have not given the required information to answer your
question. Voltage? power Factor? Type Load? Fault current?

Is This Answer Correct ?    6 Yes 2 No

for 644KW load which MCCB should i use..

Answer / karthik ccel

If i consider your 644kW load as a motor then,

I Assumed some parameters are:
644kW Motor, Power Factor - 0.9, Efficiency - 0.9, Load
Connected Voltage - 415V Then,


I = (644*1000) / (1.732*415*0.9*0.9) = 1106Amps
Considering 20% Margin = 1106 * 1.20 = 1327Amps

Conclusion:
So, We can choose Breaker rating is higher than that
1327Amps. Generally no one use the MCCB breaker above
800Amps. So, we can prefer the 1600Amps VCB Breaker for that
644kW Load.

Is This Answer Correct ?    6 Yes 3 No

for 644KW load which MCCB should i use..

Answer / antaratara ghosh

assuming the load as motor,operating voltage as 415 V,pf
as .85, efficiency as .95,

rated current, Ir= (644)/(1.732*0.415*0.85*0.95)
= 1110 A (approx)
now considering VFD starting for the motor,
starting current, Ist= 2*Ir
= 2220 A
considering margin of 20%, maximum current flowing =
2220*1.2 = 2664 A

Since MCCB are not used above 630 A in India, you have to
go for 3150 A (which is just greater than 2664 A and
available in market) ACB...

Is This Answer Correct ?    2 Yes 2 No

for 644KW load which MCCB should i use..

Answer / lokeshraj

Use 1600 Amp ACB.

Is This Answer Correct ?    0 Yes 1 No

for 644KW load which MCCB should i use..

Answer / ahmed raza

Formulla for calculation of breaker is...
Total load in Watts/380(voltage)*0.8(pf)*1.732(delta to Y
conversion)
So
= 644/380*0.8*1.732
= 1223.10
we can say
= 1250AMPs breaker should be use....

Is This Answer Correct ?    0 Yes 3 No

for 644KW load which MCCB should i use..

Answer / sami

Calculate 644kw load Amp
Breaker Selection Formula ( Amp*125% )
for Example : 1000A*125%=1250
Instal 1250Amp Breaker

Is This Answer Correct ?    1 Yes 5 No

Post New Answer

More Electrical Engineering Interview Questions

why can't we increase the voltage by increasing the field voltage in order to get higher voltage.so that we can eliminate step up transformer

4 Answers   Bhel,


In general bus riser follows the bus section in SWGR. What are impacts if bus section follows bus riser?

0 Answers  


What type of DC Generator is used for Arc Welding purposes?

7 Answers   CPCL, Rubicon,


why HT voltage rating in multiple of 11

12 Answers   ISRO,


If we connect a motor and generator together (I mean that the generator gives the motor electricity and the motor gives the generator movement) regardless the losses. Will the generator still generate and the motor still move?

0 Answers   Cap Gemini,


Whats the difference btwn a latch, port,data bus buffer? Do they all not hold data in d flip flops??

0 Answers  


Why infinite busbar has zero resistance and high mechanical inertia?

1 Answers  


Ohms law explain

1 Answers   Hetero,


y we use neutral,all r told its used to for closed path..k its a just used to closed path,in a transmission line y we put same conductor used n both phase and neutral..if we use less than phase conductor in neutral mean we ll reduce cost its right r wrong..if we use mean any problem occur in transmission line..

0 Answers   ME,


what is meant by insulation voltage in cables? explain it?

4 Answers   ABB,


how to find out speed of single phase motor

6 Answers   BARC,


by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.

0 Answers   HP,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5086)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4456)
  • Electrical Engineering Interview Questions Electrical Engineering (16639)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)