Answer / iamdon

Vector group arises due to relative diference between
primary and secondary windings of the transformer.Since
each of such windings has some advantage over other so we
use all of them in particular apppliction.

Answer / k.prakashchandra

They are required for phase shifting or matching wherever
required, especially for measurements in electronic relays
and meters

what is the meaning of x,m,k in the relays?

0 Answers   ITC Infotech,

---

What is the use for cable entry in control room?

0 Answers  

---

What is the difference between the impedance percent and impedance voltage ?

0 Answers  

---

Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?

0 Answers  

---

For single phase(phase to neutral) having potential difference 230.in three phase(phase to phase)we have 440V HOW...?

1 Answers  

---

How to increase the kvah ?

1 Answers   IGP,

---

I have a 600VA UPS for computer only. It holds for 20minutes only. 1. Can it be upgraded for longer period.? 2. Can it be used for one ceiling fan and a tube light? If yes, how to upgrade?

11 Answers  

---

how does it help for selection of a transformer.

0 Answers  

---

what is the current rating of 2500 KVA,33KV/433v transformer on secondary(LT) side

9 Answers   Reddy Labs, Vitrum Glass,

---

How 48-relay (incomplete sequence) functions?

0 Answers  

---

heat can flow from a body at low temperature to a body at higher temperature only when ........ is supplied from an external source A). Voltage B). Current C). work D). Mass

7 Answers   BMRCL,

---

how to select short circuit current while selecting a MCCB? how to calculate current for a given KVA and KW load?

2 Answers   GE, PnU Engineering,

---