Answer / abhiramsahu2007

FOR STAR CONNECTED CKT ,TO BALANCING CURENT THE NEUTRAL IS
GROUNDED

Answer / khaja tajuddin

whenever a live wire touches an enclosure of an equipment a
ground fault occurs, so to provide the personnel protection
the equipment enclosure is connected to grounded neutral
wire through a grounding conductor to make earth and
enclosure electrically common. At the same time the ground
fault current flows from the enclosure back to the source
to trip the protection device

Answer / saurabh

1) Neutral Shifting is Prevented.
2) System/Personal Safty increses

Answer / eduardo

There are 3 types of neutral systems: TN TT and IT. In both
TN and TT the neutral should be connect to earth. IT the
neutral should not be connect to earth (or connect via a
high value restistor).

Answer / waqar

it is just for personal protection.

Answer / gunasekaran

where it is sorce end and distribution level

Answer / gunasekaran

if it is source end it should be another one is
distribution end.

Answer / sandesh salke

when you use input side delta-star txt
than u txt secondary u will connected the neutral and u r
load is safe and search voltage going to grounded.

Answer / dhivya

where we need for away from shock

In my power station 220 volts dc battery set. they coneected 84th cell taped

1 Answers   KPTCL,

Before i went to bed my master bathroom lights were working fine. At 2 am, when I went to use the lights, none of them were working. The outlets throughout the bathroom work, but the lights and fan above the toilet don't. I have two panels of switches. The one panel has four switches. One of the switches turns on the hall light, and that works. The other three are to other lights, and they don't. The other panel has three switches. One of those is to the fan, and the other is to a light above the toilet. The other is a to light that is also on that other panel. I tried the breakers, and the one that turns off the outlets, marked for the bathrooom, turns on and off the outlets. None seemed to be tripped. I checked the lightbulbs, and they are fine. Please help

2 Answers  

how caculate the pump head to maintain perticuler pressure of water and what would be the motor size in hp for the same?

1 Answers  

I am going to appear for the RRB Chennai junior Engineer online exam. Please send me the previous exams question papers (also solved) to my mail id: rrkhandhar@yahoo.com

0 Answers  

I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?

0 Answers  

Stator of 3-phase IM has 3 slots per pole per phase, calculate number of stator pole pairs. A 1 B 6 C 2 D 3

2 Answers  

what is the different between HT auxillary relay resistance and transformer tripping relay resistance?

0 Answers  

Why 66KV is step down to 11KV and then 433v, not directly 66KV to 433v ?

2 Answers  

What are the components of a substation?

3 Answers   IOCL,

What is the meaning of C1, C61, C91 cable

0 Answers  

Whats the diference between Induction motor and servo motor

3 Answers   Essar, PMT Machines,

What is the Maximum Power generation capacity of a Synchronus Machine ??

1 Answers