Answer / rajendra.s

It depend on which metal you are using copper/aluminum.
& it also depends on density.
to calculate busbars multipy cross sections.
For AL if density is 0.7/1A
Eg.for 100A incomer density .7 busbar is 20x10MM=140A.
with 1A density 10x10mm=100A
For CU standard density is 1.5/1.8A

From Rajendra Sawant
Miraj

for opening electrical shop, tips needed.

0 Answers  

---

how to calculate current in HT side when we having LT current

2 Answers  

---

why earth hole size is biggest in socket point.

5 Answers  

---

What is the SCR system in drilling rig.

2 Answers   Weatherford,

---

in thermal power plants by opening the turbine governor valve increase the generator load. how

3 Answers  

---

---

What will be the output of an alternator ,if the field current is single phase ac supply.

1 Answers   DRDO,

---

How can claculate to attain the desired PF in the line ( HOW Much KVAR is required ) Pls Give the formula? Equate Petrochemical 0 1 how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec. 0 1 What will happened. if we feed 3phase supplay to the stater with out insert the rotor. How much current will flow through the stater winnding? Equate Petrochemical 0 1 What is required of exietation to the alternater. 0 1 why star point of HT motor not earthed? Equate Petrochemical 0 1 Why we are getting low voltage in star connection? Equate Petrochemical 0 2 What's ND relay & it's functions? Equate Petrochemical 0 2 How instantanious short circuit current is calculated? its formula? Equate Petrochemical 0 2 What is servo Motor? What's the advantages of this motor over Induction motor? Equate Petrochemical 0 2 What is core CT & it's function? Equate Petrochemical 0 3 what is meant by star/delta voltages as 440/220 in a 3 phase induction motor, and why it should be connected on STAR IN 3 PHASE SUPPLY L & T 0 4 What is required of exietation to the alternater. KNB 1 23 what is the design voltage for 6.6KV 2000 KVAR HT capacitor? Consultancy 0 3 Pls explain about vfd control?Where it is used, Give some example? siemens 1 22 Please explain me abt PQ diagaram in the power sector. 0 9

0 Answers  

---

If the line voltage is reduced to 75% of its rated value then by what percentage current will reduce ?? 75% 25% 50% no change and why ?

0 Answers  

---

Induction generator has = A negative speed B negative slip C negative voltage D negative current

2 Answers  

---

what is the full form of MEMO? name of memo train.

6 Answers   BirlaSoft,

---

What is the distance b/w R&Y phase in 33kv T.line,11kv &440v

1 Answers   NTPC,

---

how we are measuring the import and export power?

1 Answers  

---