Answer / karna

Under voltage coil means it will energized when supply
available, closing coil means it will operate when we are
giving closing command at that time it will operate , shunt
trip means it will operate when we are giving trip command
manually or through fault. CLOSING COIL OPERATE MEANS WE
WILL GET OUTPUT SUPPLY FROM THE ACB TERMINALS , SHUNT TRIP
COIL OPERATE MEANS IT WILL DISCONNECT THE OUTPUT SUPPLY OF
THE ACB TERMINALS. IF UV COIL USED IN ACB MEANS WITHOUT
INCOMING SUPPLY WE CAN'T CLOSE THE ACB.

Answer / nirmalraj

cc used for closing the breaker contact, tc used for trip/open
the breaker contact and uv coil used for spring charge
interlock. if no supply manual spring charge is possible,
supply is present manual spring charge is not possible

what about GD square and its important for motor design?

0 Answers   Innovis, MNC,

---

Which Motor used in Fan's Motor ?

3 Answers   Matsui Technologies,

---

While DG is on Load? we can start the capacitor bank?

3 Answers   Inorbit,

---

how can testing using megger?

1 Answers  

---

I Have 100Ah battery with 650VA Inverter, i WANT TO TAKE a Solar panel to charge my battery, so please suggest me,what rating of solar panel(with solar charge controller) can buy for a load of 450w for 4 hours

1 Answers   Chevron,

---

---

HOW DISTANCE PROTECTION IS DONE IN EHV TRANSMISSION LINES? WHAT IS THE BASIC TECHNIQ OR FUNDA USED BEHIND THIS ? SPECIALLY EXPLAIN?IMPEDANCE METHOD.

2 Answers   ABB,

---

Hello every one I am currently working in IT side but i have an offer to work under 'A' license holder and he says i can get c license what is the use of c license and what shall i do after getting it basically i am an electrical graduate please help me shall i leave this it job and work in electrical maintenance will i have a good future i am confused Thank You in Advance

1 Answers  

---

In a flange coupling, the flange bolts are designed for

0 Answers   Caterpillar,

---

why we used to transmitt the power at higher voltage why not at lower voltage

8 Answers  

---

i have completed deee and i've (June2012-feb 2015 experience in electrical maintenance in pvt ltd company.company having HT & LT electrical power.how to apply electrical C-license ,NOW I was resigned my job,what are requirements of applying for c-license

0 Answers  

---

how wud i know that whether i have to use unitized package substation or transformer?

1 Answers  

---

If I fill the form of engineering services and I left the exam de to navoidable reasons . Will it counts my one attempt

2 Answers  

---