Answer / yashpal gahlot

Surge protection device is used to protect against the
transients occur due to switching off heavy loads.

Lightening Arrestor used to protect the High Rise
Buildings and switch yard from lightning strokes.

Answer / panks

Exactly, Lightning Arrestor is used to arrest the lightning
strokes outside of the building areas like switchyards, etc.

Surges means temporarily happening i.e. transient impulses
of suddenly induced lightning strokes, which are for micro
seconds, not for more time.
Surge Suppressor is the Surge Protection device.

Answer / purushmallya

Lighting impulse are used to protect the system against
lightning impulses which are of order of million volts.

Surge arrestors are used to arrest the transit impulses
like switching impulses.

Answer / mayil

surge aresster/surge protection device is used to abserve
over voltages/switching transiants/surge voltages. it
consists of capasitors,resistors.

Lightining aresters is mainly used to protect from lightning
strokes. mostly it is connected to begining of over head line
in switching yard.

Answer / swapnil dandawate

Surge protection device is used to protect your system
against Transient ( having impulse of 8/20 Micro second)or
Induced Lightning effects .

On the other hand Lightning Arrester is used to protect
your building and not your system inside building

Answer / rajesh

no

why did the BDV test in transformer?

2 Answers   Jindal Steel and Power,

Whta is earthing?What is the optimum value of Earth Pit?

2 Answers   Bharti,

what is %impedanece

3 Answers   KSEB, Steel Plant,

1 ton AC takes how much current( starting & stable)

15 Answers  

1.what is the reason for transformer and lightning arrester blast in 33kv system

0 Answers   ABB,

What is Procedure the procedure to select CT's & PT's in 66kV and above substation?

3 Answers   Infotech, Vijai Electricals,

why power not passes in plastic and rubber material

0 Answers   GPG,

why synchronous motor has zero starting ?

8 Answers   NTPC,

DO MEGGER TEST APPLIED ON SURGE ARRESTOR? IF YES THEN WHAT ARE THE ACCEPTED R VALUE REQUIRED FOR SURGE ARRESTORS FOR VOLTAGE LEVEL 11KV, 33KV

2 Answers  

how to set the transformer differential relay

1 Answers   Divis Laboratories,

What is the effect if power factor is above 1 or unity.

15 Answers   NTS,

how many power plants in andhra pradesh,how many types and there capacity

2 Answers