Answer Posted / cool

60A

If Polarization index of motor 8.75 at 500volts of medium voltage 4.16 KV motor what this mean winding good or bad pl answer if any reffrence book give me the link

2077

---

which pump used in WTP explain the function of VFD how to dtermine capacitorbank of capacity one plant

1872

---

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?

2094

---

Is there any guideline say about display of earthing value near to earth pit

1153

---

Why is water motor not taking the pressure? what is the problem?

1531

---

How to calculate earth wire load by formula

2521

---

what is mean by parallel operation of permanent magnet generators

1938

---

The transmission does not have options: a)Partition noise b) Flicker noise c) resistance d) Short noise and reason

2386

---

What is knee point voltage?

1082

---

how we provide neutral earth on synchronising panel as per electrical standards?

2043

---

how to calculate the fault in substation

2343

---

What is the practical way to calculate the cable size for known ampere load?

1382

---

where rlc series ckt used?

2156

---

why 15 kw motor winding resistance is low then 5 kw motor winding resistance?

2789

---

HOW TO CALCULATE EARTHING SIZING?

2072

---