7/23/2019 GCB - Earthing Switch Retrofit

http://slidepdf.com/reader/full/gcb-earthing-switch-retrofit 1/8

© ABB GroupJanuary 12, 2016 | Slide 1

Earthing Switch Retroit !it or "G#$% & "E# %''6

 ABB "igh #urrent Sy(te)( Ser*ice(

GCB Service

7/23/2019 GCB - Earthing Switch Retrofit

http://slidepdf.com/reader/full/gcb-earthing-switch-retrofit 2/8

© ABB GroupJanuary 12, 2016 | Slide 2

"G# % Sy(te)Earthing Switch Retroit !it "G#$% & "E# %''6

+anuactured ro) 1- . 2010

in /urich, Switerland

ptional earthing (witch wa(

pro*ided on either or on oth

(ide(

3ran(or)er (ide 4%5

Generator (ide 45

7/23/2019 GCB - Earthing Switch Retrofit

http://slidepdf.com/reader/full/gcb-earthing-switch-retrofit 3/8

© ABB GroupJanuary 12, 2016 | Slide %

7hy Earthing Switch Retroit !it8Earthing Switch Retroit !it "G#$% & "E# %''6

#hallenge

9 earthing (witch wa( not

e:uipped during actory

a((e)ly, new enclo(ure( would

e nece((ary to (upply in order to

retroit

Solution 3o pro*ide ea(y earthing (witch ;

grounding (witch retroit (olution

<ecti*e

9ncrea(e (aety during

)aintenance within the ==

Si)pliy )aintenance procedure(

within the ==

HGC 3

breakers

ordered w/o

earthing

switch do

not have an

assembly jig 

7/23/2019 GCB - Earthing Switch Retrofit

http://slidepdf.com/reader/full/gcb-earthing-switch-retrofit 4/8

© ABB GroupJanuary 12, 2016 | Slide

Scope o (upplyEarthing Switch Retroit !it "G#$% & "E# %''6

=art( and co)ponent(

Earthing (witch co)plete

Earthing #ontact

Support >?/

#on(ole co)plete

Earthing (witch )otor dri*e

 Adaptation( control cuical incl' )i)ic

Earthing switchcomplete

Motor Drive

Openposition

Closeposition

7/23/2019 GCB - Earthing Switch Retrofit

http://slidepdf.com/reader/full/gcb-earthing-switch-retrofit 5/8

© ABB GroupJanuary 12, 2016 | Slide @

Scope o (upplyEarthing Switch Retroit !it "G#$% & "E# %''6

 A((e)ly =rocedure

Re)o*al di(connector and arcingcha)er(

7ith alternati*e de*ice,ad<u(t)ent( on enclo(ure incl'rewor

 A((e)ly o earthing (witche(incl' linage and )otor dri*e

Rea((e)ly o di(connector andarcing cha)er(

 Ad<u(t)ent( and (etting oearthing (witch

7iring o earthing (witch tocontrol cuical

Retroit o control cuical incl')i)ic

+ounting o new rating plate

Re$co))i((ioning incl' unctionalchec(

7/23/2019 GCB - Earthing Switch Retrofit

http://slidepdf.com/reader/full/gcb-earthing-switch-retrofit 6/8

© ABB GroupJanuary 12, 2016 | Slide 6

Scope o (upplyEarthing Switch Retroit !it "G#$% & "E# %''6

=ro<ect Ba(ed 3a((

 Ad<u(t)ent( o ei(ting electrical (che)atic

 Ad<u(t)ent( o cu(to)er interlocing (y(te)

7/23/2019 GCB - Earthing Switch Retrofit

http://slidepdf.com/reader/full/gcb-earthing-switch-retrofit 7/8

© ABB GroupJanuary 12, 2016 | Slide C

Su))ary ; Beneit(

Ea(y Retroit !it a*ailale or "G# % reaer(, originally

not e:uipped with earthing (witch

En(ure( a (ae )aintenance proce((

#an e eecuted during o*erhaul o the unit

7/23/2019 GCB - Earthing Switch Retrofit

http://slidepdf.com/reader/full/gcb-earthing-switch-retrofit 8/8

© ABB GroupJanuary 12, 2016 | Slide -