GCS 1400-Overhead Devices(200808)

8/12/2019 GCS 1400-Overhead Devices(200808)

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GCS 1400

Version 1.0 : July 25, 2008

Overhead Devices or !V

General ElectricityCompany of Libya


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Table of Contents

1. Sco"e 1

2. #or$lo% 1

&. Cons'ruc'ion !e'hods 2

3.1 General 2

3.1.1 Location.................................................................................................................................. 2

3.1.2 Checkpoints before installation............................................................................................2

3.1.3 Checkpoints after installation..............................................................................................3

3.2 Sub structures 3

3.2.1 Supporter................................................................................................................................ 3

3.3.2 Main tank..................................................................................................................... ......... 4

3.3.3 Assembly ...........................................................................................................................4

3.3.4 Control cabinet ....................................................................................................................7

3.3.5 o!er source ............................................................................................................. ......... . "

3.3.# $erminal of %e&ice .............................................................................................................'

3.3.7 (arthin) an% sur)e arrester............................................................................................... 1*

4. #or$ (rocedure 11

4.1 Load Break Switch 11

4.2 Recloser and Sectionalizer 11

4.3 Capacitor 11

4.4 Step Voltae Reulator 11

4.! Sure "rrestor 11

5. Chec$lis' 28

). Sae'y *or+ &0


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Overhead Devices

List of Tables

'a-le 0 (ole 'y"e o each overhead devices /GDO 1000GD& &000 &

List of Figures

*i3. 0 #or$lo% o devices 1

*i3. 0 he cons'ruc'ion direc'ion o 67S 4

*i3. 0 6oad -rea$ s%i'ch /GDO 1400GD& &000 5

*i3. 0 u'o+a'ic circui' recloser/GDO 1400GD& &000 5

*i3. 0 u'o+a'ic circui' sec'ionali9er/GDO 1400GD& &000 )

*i3. 0 Ca"aci'or/GDO 1400GD& &000 )

*i3. 0 S'e" Vol'a3e e3ula'or/GDO 1400GD& &000 ;

*i3. 0


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Overhead Devices


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July 25, 2008Version 1.0G>CO6

Overhead Devices

1. Sco"e

#his standard co$ers the t%pes o& o$erhead de$ices &or 'ediu' $oltae and construction

procedure &or e$er% t%pe o& de$ices on the pole &or up to 3(kV o$erhead lines.

2. #or$lo%

) * is onl% &or the de$ices ha$e such &unctions or accessories

+,i. (- ork&low o& de$ices

125

Connect the lead

)Check batter%*

/nstall the switch

/nstall the brackets

Check the as

pressure or oil

Check the switchin

with hand

/nspect the e0ternal

appearance

Clean up and arrane

the work place

/'pro$e the earth

resistance

/nstall the earth rods

)/nstall the control

cabinet*

)Connect the cables*

)/nstall the source &or

control cabinet*

,inish

sin LV

source

/nstall and connect

the earthin wire

Check the accessories

o& the switch

)Check the switchino& control bo0*

)/nstall the crossar'

and insulator &or lead*

/nstall the L"

Connect the lead o&

sure arrestor

5.#r

secondar% wire

Control cable

Control source cable

,or de$ice

,or tank o& sw.

and control cabinet

6easured $alue

"llowance $alue7


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Overhead Devices

&. Cons'ruc'ion !e'hods

&.1 General

&.1.1 6oca'ion

)a* #he construction point)s* shall be chosen to &it &or the usin purpose o& de$ices.

)b* #he de$ices &or 'ini'izin the outrae area when an% &aults occur on the

distribution line shall be installed takin into consideration as &ollows8

9 /& the de$ice is &or the branch9o&&: it shall be constructed on the &irst pole o& the branch

o&& in principle.

9 "$oid the de$ice installation such pole as &or branch o&&: anular pole: a pole installed

trans&or'er or capacitor. 9 /& the line crosses a ri$er: lake: &orest: etc. the switch shall be constructed be&ore

crossin it.

9 /& the line &low into rural area a&ter passin the urban area: the de$ice shall be

constructed the &irst pole o& the rural area.

9 /& the line passes throuh towns: the de$ice shall be constructed at the border line o&

the towns.

9 #he two kinds o& de$ices shall not be constructed on a pole toether in principle.

&.1.2 Chec$"oin's -eore ins'alla'ion

)a* Check the accessories whether da'aed or not.

)b* Check the condition o& the de$ice and control cabinet.

9 Re'o$e the packin care&ull% and check $isuall% the condition o& the e0ternal

appearance whether there is trans&or'ation or da'ae or not.

"$oid handlin the de$ice b% rippin the switchin handle directl%: bushin itsel&:

assistant wire: etc.

9 /& the switch is an oil i''ersed t%pe: check the leakae and a'ount o& oil.

Re&er to the 'anual o& each switch.

9 /& the switch is a as insulated t%pe: check the pressure o& the as.

9 Check the batter% accordin to the 'anual o& all de$ices.

9 #est the 'anual and auto'atic switchin s%ste' b% turnin on;o&& se$eral ti'es

accordin to the switchin s%ste' o& all de$ices.

,or testin the auto'atic switchin s%ste': connect the source cable &or handlin

the de$ice te'poraril% and test it.

Check the internal contact point o& each phase usin the dielectric resistance tester.

225


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Overhead Devices

&.1.& Chec$"oin's a'er ins'alla'ion

)a* Check the clearance o& all leads between phases each other and to the other &acilities.

"d 1!((*.

)b* Check whether the tools or so'ethin are le&t behind and cleanness on the top o&

'ain bod% and 'ountin bracket.

)c* 6ake sure a 'ountin condition o& the control cabinet and its co'ponents such as

batteries: charer: power trans&or'er &or power suppl%: etc.

)d* Check the charin condition and capacit% o& batteries usin the batter% test button in

the control cabinet.

)e* Check the earthin connection o& 'ain bod% and control cabinet and 'easure the

resistance $alue.)&* Check the connection o& the control cable and power cable.

)* Check the de$ice whether it operates nor'all% b% 'anual handlin and auto'atic

handlin with control cabinet or not.

&.2 Su- s'ruc'ures

&.2.1 Su""or'er

)a* "$oid the pole)s* which easil% da'aed b% $ehicles as &ar as possible.

)b* #he pole t%pe &or the de$ices o& each $oltae is like as &ollows8

table (? 5ole t%pe o& each o$erhead de$ices )G=> 1(((;G=3 3(((*

Devices ?o+inal vol'a3e

/il 13' Stout t%pe

11 11' Stout t%pe

Capacitor 3( 9 13' Sinle )Stout t%pe*

11 11' Sinle)Stout t%pe*

&25


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Overhead Devices

&.&.2 !ain 'an$

)a* #he installation direction o& the switch shall be the roadwa% side usuall% and the

'ini'u' heiht abo$e the round to the botto' o& switch is !.(')G=>14((*.

)b* #he switchin handle on the 'ain tank o& LBS shall be located at the side o& pole.

)c* #he de$ice shall be constructed to keep in balance and the bracket shall be tihten up

stronl% not be shaken when it handled.

+,i. (- #he construction direction o& LBS

&.&.& sse+-ly

)a* Load break switch )LBS*

#he inter$al between bracket and crossar' &or each $oltae is like &ollowin

&iures.

/nter$al between lowest part o& LBS and LV line)i& an%* shall be (.2' or 'ore.

#he sure arrester shall be installed on the crossar' at the both side o& LBS.

425

Roadwa%

Switchin handle


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Overhead Devices

)a* 11kV )b* 3(kV

+,i. (- Load break switch )G=> 14((;G=3 3(((*

)b* Recloser: Sectionalizer: Capacitor

#he sure arrester shall be installed on the crossar' at the both side o& &acilities.

#he lead o& sure arrestor shall be connected &arther than the lead o& de$ices &ro' the

crossar'. /& ine$itable: the lead can be connected on the lead o& de$ices. #he inter$al between bracket and crossar' &or each $oltae is like &ollowin &iures.

/nter$al between lowest part o& LBS and LV line)i& an%* shall be (.2' or 'ore.

)a* 11kV )b* 3(kV

+,i. (- "uto'atic circuit recloser)G=> 14((;G=3 3(((*

525

4((D((

2((

1E(( 3(((

1E((

1E((

1E((

4((D((

D((

2((

3(((

1E((

1(((

1(((


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Overhead Devices

)a* 11kV )b* 3(kV

+,i. (- "uto'atic circuit sectionalizer)G=> 14((;G=3 3(((*

)a* 11kV )b* 3(kV

+,i. (- Capacitor)G=> 14((;G=3 3(((*

)c* Reulator

Reulator is installed with b%pass switches on t%pe poles like &ollowin &i.D.@. But:

a s'all size reulator can be installed on a pole.

)25

1E((

4((D((

D((

2((

3(((

1E((

1(((

1(((

4((D((

D((

2((

1E(( 3(((

1E((

1E((

1E((


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Overhead Devices

)a* 11kV )b* 3(kV

+,i. (- Step Voltae Reulator)G=> 14((;G=3 3(((*

&.&.4 Con'rol ca-ine'

So'e de$ices ha$e control cabinet to control the de$ice re'otel%. hen control cabinet

is installed: below considerations shall be taken into.

)a* #he heiht &ro' round to botto' o& control cabinet shall not be less than 3.!' to

pre$ent pedestrians &ro' unauthorized operation or bein in


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Overhead Devices

+,i. (- /nstallation e0a'ple o& control cabinet )G=> 14((*

#he control cable &ro' control cabinet to 'ain tank shall be wound with ties b% proper

'ethod on the pole not to be shaken. "nd the cable shall not et an% connected point)s*

until the 'ain tank and control cabinet earthed.

&.&.5 (o%er source

#o operate the de$ices like recloser: LBS and sectionalizer at the control cabinet

re'otel%: power cable shall be connected to the control cabinet and the control cable shall

be connected to the 'ain switches &ro' the control cabinet. #he detailed speci&ication o&

the control and power suppl% cable shall be &ollowed the 'anual i$en b% 'anu&acturer.

hen the power cable connected inside the control cabinet: the line shall be in dead

condition and the control cable shall be connected a&ter the power cable connected.

)a* Recloser

#he power source is supplied b% low $oltae distribution line connected to e0ternal

distribution trans&or'er and the rated "C $oltae &or the control cabinet shall be

sinle9phase 23(V and rated =C $oltae &or the control cabinet shall be 24V b% GAS

341@(.

/n case o& the recloser which operated b% "C power: the power interruption should

'ake i'possible &or the control cabinet to control the recloser re'otel%. So: the

e0ternal power shall be supplied b% the source side trans&or'er o& recloser. Be&ore

installation: 'ake sure to check the t%pe o& recloser and 'anual.

825

/a@ /-A

Road

Controlcabinet

Road

6in.3.!'


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Overhead Devices

Considerin the i'portance o& recloser: the trans&or'er 'a% not be shared with other

eneral loads as &ar as possible.

)b* LBS F Sectionalizer

#he control cabinet o& LBS F sectionalizer needs the e0ternal "C power &or charin

the batter% which operates the de$ice re'otel%. #he rated "C $oltae &or the control

cabinet shall be sinle9phase 23(V and rated =C $oltae &or the control shall be 24V

b% GAS 341@(.

#he power source is supplied b% low $oltae distribution line connected to e0ternal

distribution trans&or'er. Generall%: the an% direction o& trans&or'er &or power

suppl%in to the control cabinet is all riht because the de$ices are operated b% =Cpower source. Be&ore installation: 'ake sure to check the t%pe o& de$ice and 'anual.

&.&.) er+inal o device

)a* #er'inal

#here is se$eral 'ethods &or ter'inal connection o& de$ice: so when the lead connected to

the ter'inal: it shall be &ollowed b% the 'anual.

)b* #he lead o& de$ice

#he lead o& de$ice &or connectin to &eeder conductor could be a copper or alu'inu'

conductor. Consider the below reco''endation &or it: but prior to that: &or e0act and sa&e

installation: &ollow the 'anu&acturers reco''endation.

se the sa'e t%pe with the t%pe o& &eeder conductor as &ar as possible.

#he lead o& de$ice connected to the inside o& de$ice: 'al&unction could be occurred b%

bein penetrated the water or 'oisture into the de$ice. So it is hihl% reco''ended

that the conductor o& lead 'a% ha$e the structure which the 'oisture or water cannot

be penetrated easil% or the ter'inal has the structure which has the &unction like that

)e.. 'old con t%pe*.

B25


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Overhead Devices

+,i. (- Lead connection o& switches

&.&.; >ar'hin3 and sur3e arres'er

"ll the 'ain tank and control cabinet o& the de$ices shall be earthed properl%. #he sure

arrester also earthed b% connectin to the earth stud o& tank o& switches.

#he earthin ter'inal is cla'pin screw or bolt t%pe. See the 'anual i$en b%

'anu&acturer &or detailed connection 'ethod o& each de$ice. #he allowance resistance

$alue could be &ound in earthin standard.

#he earthin wire shall be wound with ties b% proper 'ethods on the pole not to be

shaken.

#he sure arrestor shall be installed the both sides o& pole which a de$ice constructed and

it shall be earthed b% the standard.

#he earthin shall be constructed be&ore connectin the lead o& the de$ices and

control cable.

1025

ConnectorConnector

Lead o& de$ice

Conductor

Lead o& de$ice

Conductor


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Overhead Devices

4. #or$ (rocedure

4.1 6oad 7rea$ S%i'ch

4.2 ecloser and Sec'ionali9er

4.& Ca"aci'or

4.4 S'e" Vol'a3e e3ula'or

4.5 Sur3e rres'or

1125


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Overhead Devices

(rocedure *i3ures

1. a$e 'he con'ainer 'o "ieces and chec$ 'he

con'en's

#ake the container to pieces care&ull% and $isual

check the LBS and the contents accordin to the

enclosed 'anual.

=o not re'o$e the additional packin &or

pre$entin the bushin until it installed on

the switch.

=ont hold and handle the control handle:

bushin and leads with hand.

Check the switchin &unction o& inner

contacts and as aues.

,ollow the 'anual.

2.


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Overhead Devices

contact the enerized part.

1&25


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Overhead Devices

(rocedure *i3ures

4. Connec'ion 'he leads

sual ter'inal t%pes o& LBS are bare and bushin boots )supplied b% 'anu&acturer*

t%pe. #he bare t%pe ter'inal usuall% used onl% &or 11kV.

4.1 Bare t%pe

/nsert the lead inside the lu &ull% and co'press it.

6ake sure to the end o& the strands o& lead be e$en b% cuttin all the strands o&

lead at once be&ore insertin to the lu.

be&ore co'pression: bind 1(c' with tie)sa'e t%pe with lead wire* outside on the

lead not to be twisted the strands when it co'pressed.

Connect the lu to the pal' o& bare ter'inal)which 'anu&acturer &itted* usin bolt

and nut tihtl% not to be shaken or loosened.

,Connect the lead to the 'ain conductor directl% usin parallel roo$e cla'p.

6ake sure to use the e0act size cla'p &or that conductor and lead.

4.2 Bushin boots t%pe

#his is the t%pe that the cable ter'inal with lu and bushin boots are alread%

connected to the bushin o& LBS.

Re'o$e the sheath o& cable to &it the cla'p.

#he re'ainder o& the cable shall be cut )dont lea$e the re'ainder on the pole*.

Connect the cable to the conductor usin the parallel roo$e cla'p.

1425

=epth inserted

Lu

Lead wire

Bind )1(c'*

Lu Lead o& LBS

Bare ter'inal)'anu&acturer &itted*


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Overhead Devices

1525


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Overhead Devices

(rocedure *i3ures

5. e+ove 'he "reven'in3 cover o -ushin3

"&ter the switch is installed: re'o$e the co$er o&

bushin insulators &or pre$entin &ro' da'ae.

Be care&ul the bushin not to be da'aed.

).


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Overhead Devices

(rocedure *i3ures

1. a$e 'he con'ainer 'o "ieces and chec$ 'he con'en's

1.1 #ake the container to pieces care&ull% and $isual check the de$ice and the contents

re&errin the enclosed 'anual.

=ont hold and handle the control handle: bushin and leads with hand.

1.2 Check the oil leakae or the a'ount o& oil.

See the 'anual &or proper a'ount o& oil &or the recloser.

1.3 Check the switchin &unction b% testin the 'anual switchin handle )on and o&&*

se$eral ti'es.

Check the switchin &unction o& inner contact point usin insulation resistance

tester.

2. sse+-lin3 'he -rac$e'/i needed

2.1 "sse'ble the bracket accordin to the 'anual

&.


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Overhead Devices

1825


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Overhead Devices

(rocedure *i3ures

5. Connec'in3 'he leads

!.1 Connect the leads usin the connector.

See the procedure o& LBS.

).


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Overhead Devices

(rocedure *i3ures

1. Decision 'he 3a" o "ole and erec' su""or'

1.1 Arect the support straihtl% b% the ap as &ollow &iures.

,ollow the standards &or the poles erection and earthin. /& the reulator is the t%pes

which the control cabinet installed separatel% )not attached to the reulator*: then

e$er% poles which the control cabinet installed shall be earthed.

/t needs the lenth o& !.3' )3(kV: 3.!' &or 11kV* &ro' the top o& the pole to the top

o& bushin o& reulator.

#he size o& &ittin set is !.( 2.!'. Be&ore erect the supporters: the proper inter$al

between the poles b% considerin the size o& reulator and the &ittin set.

+11kV- +3(kV-

11kV 4.!' /#he heiht o& reulator)bushinH reulator butt end*

3(kV !.3' /#he heiht o& reulator)bushinH reulator butt end*

#he burial depth o& poles could be chaned b% the soil characteristics which de&ined

at Itable 3? o& support desin standard )G=> 1(((*.

2025

4.& Cons'ruc'ion o S'e" Vol'a3e e3ula'or

installation,ittin set

point

2.(

E.E

2.2 2.2

1(.E

"

!.(

2.E

E.(

3.( 2.2

1(.E

!.(

"

A

+unit J '-


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Overhead Devices

(rocedure *i3ures

2. sse+-lin3 'he i''in3 se' on 'he "ole or

su""or'in3 o 'he re3ula'or.

2.1 "sse'ble the &ittin set as like &iures.

,ollow the asse'bl% construction

standard &or detail procedures.

6ake sure to 'aintain the proper balance

between crossar's.

&.


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Overhead Devices

(rocedure *i3ures

4. Connec' 'he conduc'or

4.1 /nstall the crossar' &or conductor on the

13' poles (.2' below )11kV: 1.E' &or

3(kV* &ro' the top o& the pole.

4.2 /nstall the insulators and sure arrestors

on the crossra's.

4.3 ,or connection the conductor to the

b%pass switches: asse'ble the

'aterials like &ollow &iure.

4.4 Connect the conductor to the asse'bl%

and tie on the pin)or line post*

insulators.

5. ar'hin3

@.1 Connect the lead o& sure arrestor to the

conductor.

@.2 Connect the all &acilities which need to

be earthed and earthed to the round.

See the earthin chapter &or detail.

2225

A0tensionCo'positeinsulator

=eadendcla'p

A0tension

Aarthinwire

L" earthinwire


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Overhead Devices

2&25


28/35


Overhead Devices

(rocedure *i3ures

1. a$e 'he con'ainer 'o "ieces and chec$ 'he

con'en's

1.1 #ake the container to pieces care&ull% and

$isual check the switch and the contents

re&errin the enclosed 'anual

=ont hold and handle the control handle:

bushin and leads with hand

2. S and sure

arrestor (.D')&or 11kV* or 1.E')&or 3(kV*

below the crossar' &or conductor.

2.3. /nstall 3 o& pin t%pe )or line post &or 3(kV*

insulators &or supportin the leads.

+11kV-

&.sse+-lin3 'he con'ainer or ca"aci'or

3.1 "sse'ble the container accordin to the

'anual.

3.2 Li&t it on the pole and &i0 to the pole where

the top o& bushin o& capacitor to be located

at the point o& (.D')&or 11kV* or 1.E')&or

3(kV* below the crossar' &or supportin

=>S and arrester.

+3(kV-

2425

4.4 Cons'ruc'ion "rocedure or Ca"aci'or

D((

2((

1E((

1(((


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Overhead Devices

(rocedure *i3ures

4. 6i'in3 'he ca"aci'or

4.1 Li&t the capacitor b% hanin the li&tin e%es

with rope and &it into the container.

hen the switch li&ted: be care&ul not to

contact the enerized part )i& an%*.

5. Sur3e arres'er and ear'hin3

!.1 /nstall the sure arresters.

See the chapter &or sure arrester.

!.2 Aarth the switch container.

Aarth be&ore connectin the leads and cables

&or control.

See the chapter &or earthin.

). Connec'in3 'he leads

@.1 Connect the leads usin the connector.

,ollow the 'anual.

+11kV-

+3(kV-

2525


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Overhead Devices

2)25


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Overhead Devices

(rocedure *i3ures

1.


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Overhead Devices

5. Chec$lis'

CACL/S#

(roec' Su"ervisor

Con'rac'or Si'e >n3.

(ole ?o Da'e

Chec$in3


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Overhead Devices

CACL/S#

(roec' Su"ervisor

Con'rac'or Si'e >n3.

(ole ?o Da'e

Chec$in3


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Overhead Devices

). Sae'y *or+

S*>E


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Overhead Devices

Checkin ite's /nspection Re'ark

Con. Sup.

nder

installation

6aintain proper distance to the

li$e part

"&ter

Date post:	03-Jun-2018
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GCS 1400-Overhead Devices(200808)

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