Answer / rsbangra

as per question bus coupler is couple two bus systems .
as otherways if two sourse of supply at same voltage same
frequency and and same phase sequence we can couple in
running and off condition of one source.
advantage
we can parralle two lines by bus coupler
we shift load one bus to other bus.
we can charge both bus by one sourse in case of one sourse
failure.

Answer / aamirali

Bus Coupler is used to connect the two or more incoming and outgoing buses (Same voltage & frequency)and under the abnormal conditions we can shift the load on an other bus, without any interruption this is big advantage .
Types of Buses:
1. Fixed v & angle, vary P & Q
2. Fixed P & Q, vary V & Angle
3. Fixed P & v, vary Q & Angle

What is current chopping in CB?

1 Answers  

---

what is the function of garing capacitir in SF6 circuit braker?

1 Answers  

---

why transformer ratings in kva?

99 Answers   Bhel, College School Exams Tests, DOW, Emco, Esab, GE, KCP, PGCVL, Sodexo, TCS, vtps, Wipro,

---

what is the meaning of Ring Mean Unit in a substation or trasformer also tell me its oerpuse?

4 Answers   NPTC, NTPC,

---

if flow of electrons is current then why their direction are different???

1 Answers  

---

---

why anti pumping relay is not given to tripping coil of the breaker? why only to closing coil?

2 Answers   INEL, Siemens,

---

In our generating power station we get electric shock in the battery bank, what will be the reason?

3 Answers  

---

How to calculate the ups battery back up? give the formula.

15 Answers   Cushman Wakefield, Ethio Telecom, Exide, MacLellan, Morgan Stanley, TATA,

---

what are 3 factors when selecting a contactor for a job?

1 Answers  

---

lamination figures

0 Answers  

---

what is the difference between LT and HT power supply?

26 Answers   Center One Mall, Central University, JSW, Siemens, Suzlon,

---

what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

0 Answers   ABB, Siemens,

---