Answer / nilkanth

Earthing trucks mainly used in HT side to prenent earth
fault.when fault occures huter in the trucks oparate and
prevent the damage to the panel

3phase 4 wire system is more reliable or 3 phase 3 wire systems?

4 Answers  

---

what is softstarter? explain briefly where it is used?

2 Answers   Essar,

---

There is 15 KVA UPS using for single phase load.And 30 batteries of 12 V, 100 Ah are connected in series. Load is taking 15 A current.What will be the back up power for this UPS on same load?

1 Answers   BS, Dynamic Software,

---

Can we get the shock if Power system is unearth means delta type take an rated voltage as 6.6 KV?

9 Answers   Reliance,

---

why we cannot protect 100% winding of an alternator by using differential protection?

0 Answers  

---

what is the method to calculate the voltage drop for number of meters Example 250volts I/p at one end if the cable length is 50 meters what could be the drop?, after 100 meters how much? needs formulae.

1 Answers  

---

How to calculate load requirement of a 50 flat apartment with 5 kw each unit,sizing of cable,transformer

1 Answers  

---

Whats the type of current and potential transformers?

3 Answers  

---

what is the best electrical system i.e substation sytem of 11kv/.433kv for a township. if township have 300nos substation of 11kv. we have to go G.O.D.O. fuse unit or Compact Substation Unit. please reply Asap.

2 Answers  

---

We use MCCB not MCB for motor starters because MCCBs has capablity to drawout the motor starting current which is 5-6 times the full load current of motor for 1sec. Then why we use SDF in starter panel means MCC panels. Pls reply if any one knows this answer.

1 Answers  

---

Name the component u would expect to find in a switchgear assembly?

0 Answers  

---

How does zener phenomenon differ from avalanche breakdown?

0 Answers  

---