what is MFD value in capacitor?I have 201 Kva load & reactive power is 150 Kvar. so how it is calculated?

2 Answers   IIT,

---

explain wiring system

0 Answers  

---

how to calculate the current carrying capacity of a 25 & 16 kva distribution transformer.

2 Answers  

---

tan delta test of current transformer.

3 Answers   NTPC,

---

What is stepper motor?

0 Answers  

---

how we can do the insulation on secondary of ct explain and so that tan delta will within limit

0 Answers  

---

how to calculate mf when meter and cTPT detail are given

0 Answers   IBM,

---

how can i select the cable ratings

4 Answers  

---

Define noise?

0 Answers  

---

We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?

0 Answers   Siemens,

---

define B types and C types in MCB ?

3 Answers   Bhel,

---

What is the difference between Earthing & grounding

4 Answers  

---