Answer / omar aziz

Mostly standards (IEEE , ANSI) recommend 5% however, in
practical situations where a sound judgment can be made you
can strech it upto 10 - 15% at the load bus depending on
your min. voltage allowed by the motors/ other equipment.

Motors can usually start at around 80% rated voltage ,
however other electronic equipment such as UPSs are very
sensitive to voltage variations.

Consider the load before selecting this threshold otherwise
stick to 5%

in the exciter the power is feeded from battry or control or whatever.and we need it in the generators for the stating . do we need it in the shutdown also?i mean the exciter>

2 Answers   Shell,

---

HOW DO A DISTANCE RELAY SENSES THE FAULTY ZONE.

5 Answers  

---

What can you contribute to the progress of our Company as an employee if you are selected?

0 Answers  

---

percetans

0 Answers   Bhel,

---

when voltage increases then current also increases then what is the need of over voltage relay and over current relay? can we measure over voltage and over current by measuring current only?

1 Answers  

---

why series motor cannot be started on no-load?

6 Answers  

---

in 132 kv substation ligtning arrestor(120 kv) connected to line. but line voltage comes to 132 kv, it operate or not???

4 Answers   Divis Laboratories,

---

Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards

0 Answers  

---

what is the differance between HT motors And LT MOTORS.

0 Answers   Empire Vitrum Glass, Sappi,

---

Instead of single phase(220), if apply Phase to phase supply (eg: for lighting fixture). what will be the power formula? what will be the volt and current value? please explain me with some example.

1 Answers  

---

What is the importance of counter based plan & how is it scheduled?

0 Answers   TATA,

---

What is difference between incomer & outgoing type Vaccum Circuit Breaker?

2 Answers   VBG,

---