Answer Posted / sunil kumar

Both mVA and MVA are correct unit but depends upon the
rating of transformer
1. mVA mean milli volt ampere, used for small rating
transformer
2. MVA means megga volt ampere used for large rating
transformer

what is package substation.how many types they have

2107

---

What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.

2317

---

how to find Harmonics and types as per the equipemnts

1293

---

What will happen if i used 11KV earth ht kit to 11 KV / 11 KV cable termination?

1427

---

how to do the ductor test?

7064

---

What are dcs and plc?

1106

---

how to calculate distance between busbar supporters for LT panel, what are the factors influencing in this design

5321

---

how does commutator convert a.c to d.c?

2204

---

what is (+) and (-) in generator field detector stand for?

1848

---

In the magnetic fluxes, what is the role of armature reaction?

1159

---

what is a speed of rotor when we give supply to stator of 50hz and as well as rotor of 60hz of an induction motor?????

1642

---

how to measure dc earth leakage current?

3176

---

I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1991

---

What is the reason that the humming sound is coming from the induction furnace panel?

2603

---

i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value

1949

---