Answer / rajagopal

It will prevent multiple breaker closer in circuit breaker

So its name is called anti pumping relay

Answer / guest

to avoid closing command to closing coil

Answer / k.prakashchandra

The relay allows one closing command for one closing operation

why Batteries & Battery chargers are used in substation? what is the different between UPS & battery charger?

4 Answers   DLF,

---

what is ripple component in ac supply?

2 Answers  

---

What are objectives of energy managements ?

1 Answers   Kirloskar, RR,

---

in gen traf what is ONAN , ONAF , OFAF and DYN

3 Answers  

---

How can you start-up the 40w tube lite with 230v AC/DC without using any choke/Coil?

2 Answers  

---

---

Why the generating station rating is in KW though the rating of generators in KVA?

8 Answers   HAL,

---

how 650 volts creates? where is use?

0 Answers   DCL,

---

which bulb is greater iluminited, 60w and 100w are conected in series?

2 Answers  

---

SIR, GIVE ME OPGW SAG CALCULATION FORMULA I AM DAE ELECTRICAL. THANKS

2 Answers  

---

why do we require two lines one phase and a neutral for an ac transmission..is neutral potential zero..?if yes y carry a neutral line from generating station itself...why dont we take it from ground

1 Answers  

---

Why corona leads to production of Ozone and glow of the color VOILET?

0 Answers  

---

Starting times for soft starter & power factor is thier any standard or datas available in manufactures list. Kindly suggest.

0 Answers  

---