Answer / eee

the purpose of antipumping rly is to prevent closing of CB
when its already closed.the CB's have auxillary contact NO and
closes when CB is closed and thus energises antipumping...
antipumping has conatcts in series with closing coil of CB,
its NC n thus opens when energised.......cutting power supply
to closing coil.......

Answer / vinod

Antipumping relay prevent contious close and trip of
breaker when trip command exist.ie only one close with
single command, remaining answer is same as Sl.no 1

for a 11kv transmission line what capacity of CTs & PTs are required?

4 Answers  

---

If we are given a 10 amp cable type and asked to calculate the number of cores used and the thickness of the cable, how do we do it?? please help...urgent!! i hope the question is clear enough!!

0 Answers  

---

why ceiling fan give hising sound

2 Answers  

---

wht d.c produces corrosion

1 Answers  

---

What are the Steps for Testing of 20MVA (make:-CGL) Transformer? How many Test we have to do?

2 Answers   BSL,

---

What are Directly Exited Generators?

2 Answers  

---

what is difference between power transformer and distribution transformers

1 Answers  

---

DG cranking voltage?

0 Answers  

---

How to calculate the Short Circuit Impedance in Transformer?

3 Answers  

---

State the difference between Three winding transformers and Two winding transformers ? where its used?

8 Answers  

---

my UPS is 600VA with 0.6 p.f and i use it for my computer which has 450W power supply unit, a monitor of 633nW and speakers. Can any one explain this.. because the output of UPS should be 360W (<450W)

2 Answers  

---

how to design the heater in temperature control unit to heat 50KL of water?

0 Answers   SunMax,

---