How do you protect your appliances from harm in case of neutral failure in a t

How do you protect your appliances from harm in case of
neutral failure in a three phase power supply set up.

Question Posted / anoop

4 Answers
9618 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

How do you protect your appliances from harm in case of neutral failure in a three phase power sup..

Yes if neutral fails in a three phase power supply system
than the single phase voltage may increase. You can fix voltage sensitive suppressors across the supply line in your applances which will short circuit the excess voltage to earth and cause the RCCB to trip and save your appliances from further damage.

Is This Answer Correct ?

3 Yes

0 No

How do you protect your appliances from harm in case of neutral failure in a three phase power sup..

Answer / bharani

Whenever neutral fails in three phase system, the connected
loads will get connected between phases owing to floating
neutral.Hence depending on load resistance across these
phases, the voltage keeps varying between 230V to 400V.A
suitable servo stabilizer with wide input voltage range with
high & low cutoff may help in protecting the equipments.

Is This Answer Correct ?

1 Yes

0 No

How do you protect your appliances from harm in case of neutral failure in a three phase power sup..

Answer / raj

Simply use ELCB or RCBO as incomer in the 3ph supply system
since if neutral opens it will trip the complete supply
without damaging to the system.

Is This Answer Correct ?

0 Yes

1 No

How do you protect your appliances from harm in case of neutral failure in a three phase power sup..

Answer / lokesh ranjith

If nuetral fails in three phase system nuetral floats then
230 volts in will become 420V caused damage to the
equipment

Is This Answer Correct ?

2 Yes

8 No

Post New Answer

More Electrical Engineering Interview Questions

can we increase our frequency rate in INDIA?

4 Answers

What are the testing to be done before the installation of 1000 KVA Transformer?

3 Answers L&T,

We in my plant one of the transformer showing neutral to earth voltage is 22V how to solve it

3 Answers

why we have to particulary use ACB for below ratings,even available of MCB,MCCB with that range ?

0 Answers Siemens,

What is rccb?

1 Answers

When will you multiply and devide with derating factors to the actual value while sizing the cable?

0 Answers

What is an ac motor?

0 Answers

what is the effect of back reactive power on the generator ?

0 Answers MRF,

how generator generates electricity?

1 Answers Suzlon,

Where is servomechanism used?

0 Answers

which type of A.C motor is used in the fan (ceiling fan, exhaust fan, padestal fan, bracket fan etc) which are find in the houses ?

25 Answers Airtel, MPPTCL, USSA,

can you use 400 volt 3 phase and neutral and earth equipment on 440 3 phase and earth supply safely and if so how?

2 Answers Maersk,

For more Electrical Engineering Interview Questions Click Here