Answer / hanupowergrid

Fans use capacitor-run induction motors. Since a fan is expected to be operated just by the flick of a switch, it has to employ a continuous-rating capacitor in series with its auxiliary winding, which stays energizerd as long as the fan runs. The capacitor used is paper type or oil type.

Explain different types of d.c motors? Give their applications

0 Answers  

---

lead acid battery electrolity?

2 Answers  

---

What are the Application of CT & PT ?

2 Answers  

---

our company have 750 kva oil transformer.still we have facing a problem that is when voltage is 11.5 kv coming from HT side then LT-side voltage is 420v or above at tape 1.please give me best solution to decrease the voltage

4 Answers   Gannon Dunkerley,

---

what is automatic voltage regulator and it is used?

2 Answers   HAL,

---

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,

---

why dhyedration test required for transformer oil once in a year

1 Answers  

---

what is the meaning of TPN

2 Answers  

---

why three phase system is not preferred in aircrafts power cckts if yes than explain reasons?

3 Answers  

---

which type of breaker sould be used for different level of voltage ? (i.e at 11 Kv, 33 Kv, 66 Kv....

8 Answers  

---

what is impedance of transformer?

7 Answers   Synergy, Vijai Electricals,

---

what will happen if a 3 phase motor is connected to a single phase circuit and vice versa?

3 Answers  

---