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Question
what is a lightning arrester???
 Question Submitted By :: Pramod
I also faced this Question!!     Rank Answer Posted By  
 
  Re: what is a lightning arrester???
Answer
# 1
lightning aresster will protect the system from over voltage
normally design voltage is 80% of the maximum line to line
voltage.
 
Is This Answer Correct ?    3 Yes 17 No
Selvakumar.v
 
  Re: what is a lightning arrester???
Answer
# 2
This is a human made ystem which protects the external part
of building, tower, Mall etc from lightning which occurs
during thunderstorms, and sometimes during volcanic
eruptions or dust storms, due to an atmospheric discharge
of electricity between cloud to cloud, clouds to earth.
 
Is This Answer Correct ?    19 Yes 3 No
Ram Krishna Sarvadhar
 
 
 
  Re: what is a lightning arrester???
Answer
# 3
lightning flow is mainly low resistance side(i.e
TREE,CRANE,SUPPLY LINE).so only lightning arrester made
with low resistances.It is the main reson to observe the
lightnings.it Always fix the top of manual
operating.lightning arrester used to protects the
electrical equipment.
 
Is This Answer Correct ?    4 Yes 6 No
Infodoss
 
  Re: what is a lightning arrester???
Answer
# 4
Lightning arrester is a protective device which conduct
high voltages surges on the power system to the ground.It
consists of spark gap which is connected in series with the
non-variable resistance,its connection is that one end is
connected to the terminal of the equipment which is to be
protected and other end is effectively grounded.

The property of non-variable resistance is that it offers
low resistance when voltage is high.
 
Is This Answer Correct ?    23 Yes 1 No
Manish Kumar Meena
 
  Re: what is a lightning arrester???
Answer
# 5
lightning arrester is metallic device which is capable of
conducting electricity, which is placed above the multi
storeyed buildings and transformers and other receiving
stations,sub stations.the main purpose of lightning arrester
is to protect the buildings and equipments from
thunder&lightning during rainy seasons..this device will be
connected to the earth from the top of the building through
a wire,which is capable of sending high voltage into earth
 
Is This Answer Correct ?    30 Yes 1 No
Manthesh.patil
 
  Re: what is a lightning arrester???
Answer
# 6
LA is a non-linear resistor i.e. during normal condition it
offer high resistance but during abnormal condition
(abnormal voltage ) it acts as a low resistor thus allow
the heavy fault current and provide path to ground.
It is pointed one as charge resides/attracted by pointed
object and always placed at top of switchyard/building.
 
Is This Answer Correct ?    17 Yes 1 No
Kishore
 
  Re: what is a lightning arrester???
Answer
# 7
Lightning arrester is a device that is used for the
protection of electrcal devices and electrical system e.g at
the power station it is installed at power transformer ,
main purpose is to protect system against lightning impulse
.. it is non linear resistance normally open in case of
lightning impulse it grounds all the voltage and protects
systen against extra high voltage
 
Is This Answer Correct ?    5 Yes 1 No
Abubakar Siddiq
 
  Re: what is a lightning arrester???
Answer
# 8
Lightning arrester is a protective device which conduct
high voltages surges on the power system to the ground.
 
Is This Answer Correct ?    3 Yes 1 No
Swetha
 
  Re: what is a lightning arrester???
Answer
# 9
LA is non-linear resister.LA is installed on transmission
line,transformer and other electrical equipment.LA are used
to protect the equipment against lightning-stroke(high
voltage) and provide path from top to ground so lightning
stroke directly into ground.
 
Is This Answer Correct ?    3 Yes 1 No
Kumavat Nareshkumar .c.
 
  Re: what is a lightning arrester???
Answer
# 10
Lighting arrester is a proctective arrangment which provide
protection against high voltage surge. During lighting and
other condition when high voltage surge genarate then it
provide path for surge through earth.
 
Is This Answer Correct ?    3 Yes 1 No
Niranjan
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
what is the use of ballast in tube   2
What are the protections used in a HT breaker to protect the HT motors.   2
Do you know how to maintain a generator, if so what are those maintenances?   4
defination of generator   7
1)Why potential transformer primary site grounded? 2)can be loop between neutral & body for grounding? 3)What is the difference between ELCB &RCCB? 4)Why we use iron core in transformer insted of wooden core? 5)what is the principle of excitation? 6)Why we test the core balance test for transformer? 7)what is creepage?What is the creepage length for insulators at different voltages? 8)How much type of relays used for differential protection of generator,transformer & busbar protection?   5
when we increase load , current drawn from source also increases why ?   5
what do you mean by earth fault in transformer? L&T 2
why we connect the capacitor bank in star , not in delta in any system   1
Then what do you call a transformer that is installed on the ground?"   1
why we do 2 types of earthing on tranformer ie:body earthing & nutral earthing , what is function. i am going to instal a 5oo kva tranformer & 380 kva DG set what should the earthing value Altrion-Technologies 8
what is LT & HT?   6
How to select Main CB Rating for 220 KW Load? Voltech 3
 
For more Electrical Engineering Interview Questions Click Here 
 
 
 
 
 


   
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