SAES-P-100 Basic Power System Design Criteria

Engineering Standard SAES-P-100 Basic Power System Design Criteria

29 September, 2004

Electrical Standards Committee Members Al-Anizi, T.S., T.S., Chairman Al-Abdulgader, Al-Abdulgader, A.A. A.A. Al-Ahmad, R.J. Al-Awdah, Al-Awdah, S.A. Carlson, R.W. Ismail, M.H. Lowe, J. Merbai, !. !.A. Mora"si#, R.C. Re$aee, J.A. Sansbur%, M.C.

Saudi Aramco DeskTop Standards Table Table of Contents

1 2 % 4 ( * '  9 Previous Issue: 30 September, 2003

Scope Scope... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ..... 2 Con Con!ic !icts ts an" an" De# De#iat iation ions. s.... ...... ...... ...... ...... ....$. .$.... ..... ..... ...... ... 2 &eer &eeren ences ces... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ..... .. 2 Dein Deiniti itions ons.. ..... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ..... ' )ene )enera ra!.. !..... ...... ...... ..... ..... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ... 9 Desig Design n Basis. Basis.... ...... ..... ..... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ... 10 Syste System m St+" St+"ies ies ...... ......... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ..... 12 E!ec E!ectr tric ica! a! Are Area a C!ass C!assi iic icat atio ion n Desi Design gn.. .... .... .... .... .... 1( En#ir En#iron onmen menta ta!! Con" Con"iti ition ons.. s..... ...... ...... ...... ...... ...... ...... ...... ..... .. 1*

Next Planned Update:  !ctober, 200" Pa#e  o$ %

Primar& contact: 'asel () Is*+ait on %-./33

ocument 1esponsibilit&: Electrical Issue ate: 2" September, 200 Next Planned Update:  !ctober, 200"

S(ES.P.00 'asic Po+er S&stem esi#n Criteria

10 Protection Systems...................................... 1'

1

Scope *is S(ES prescribes mandator& reuirements $or t*e desi#n and installation o$ electrical po+er s&stems) *is S(ES is intended to assist en#ineers and desi#ners in t*ose areas not speci$icall& re$erenced in ot*er Saudi (ramco S(ESs, S(MSSs, etc) *is document ma& not be attac*ed to nor made a part o$ purc*ase orders)

2

3

Conflicts and Deviations 2)

(n& con$licts bet+een t*is Standard and ot*er Mandator& Saudi (ramco En#ineerin# 1euirements 4MS(E1s56 or re$erenced industr& standards s*all be identi$ied to t*e Compan& or 'u&er 1epresentative +*o +ill reuest t*e Mana#er, Consultin# Services epartment o$ Saudi (ramco, *a*ran to resolve t*e con$lict)

2)2

irect all reuests to deviate $rom t*is Standard in +ritin# to t*e Compan& or 'u&er 1epresentative, +*o s*all $ollo+ internal compan& procedure S(EP.302 and $or+ard 7aiver reuest $orm S( 8-0".EN9 to t*e Mana#er, Consultin# Services epartment o$ Saudi (ramco, *a*ran reuestin# *is approval)

2)3

*e desi#nation Commentar& is used to label a sub.para#rap* t*at contains comments t*at are explanator& or advisor&) *ese comments are not mandator&, except to t*e extent t*at t*e& explain mandator& reuirements contained in t*is S(ES)

References *e selection o$ material and euipment, and t*e desi#n, construction, maintenance, and repair o$ euipment and $acilities covered b& t*is standard s*all compl& +it* t*e latest edition o$ t*e re$erences listed belo+, unless ot*er+ise noted) 3)

Saudi (ramco 1e$erences *e $ollo+in# is a list o$ Mandator& Saudi (ramco En#ineerin# 1euirements 4MS(E1s6 +*ic* are speci$icall& related to t*e desi#n, speci$ication, and installation o$ electrical po+er s&stems and euipment) In addition, ot*er MS(E1s $or related disciplines s*all be used in con;unction + it* t*ose listed belo+ as reuired) Saudi (ramco En#ineerin# Procedure SA&'-()*

Insru+ions $or baining a Wai"er o$ a Mandaor% Saudi Aram+o &ngineering Reuiremen

Pa#e 2 o$ %



Saudi (ramco En#ineerin# Standards SA&S-A-*

Meeorologi+al and Seismi+ /esign /aa

SA&S-0-))1

Resri+ions o 2se o$ Cellars, 'is, and Tren+hes

SA&S-0-)3

!ire Waer S%sem /esign

SA&S-0-))4

!ire 'roe+ion 5 Sa$e% Reuiremens $or $$shore 'rodu+ion !a+iliies

SA&S-0-)66

'lan La%ou

SA&S-0-)71

&le+ri+al Area Classi$i+aion

SA&S-J-4)*

&le+ri+al S%sems $or Insrumenaion

SA&S-8-))

Heaing, 9enilaing and Air Condiioning :H9AC;

SA&S-'-)

Regulaed 9endor Lis < $or &le+ri+al &ui=men

SA&S-'-)(

0aeries and 2.'.S. S%sems

SA&S-'-)>

Wiring Mehods and Maerials

SA&S-'-)3

"erhead /isribuion S%sems

SA&S-'-

?rounding

SA&S-'-(

Moors and ?eneraors

SA&S-'->

'ower S%sem and &ui=men 'roe+ion

SA&S-'-7

Swi+hgear and Conrol &ui=men

SA&S-'-4

nshore Subsaions

SA&S-'-*

Trans$ormers, Rea+ors, 9olage Regulaors

SA&S-'-*(

Lighing

SA&S-'-*7

'ower Monioring S%sem

Saudi (ramco Materials S&stem Speci$ications >-SAMSS-6(

'ower Trans$ormers

>-SAMSS-6((

Three-'hase /r%-T%=e 'ower Trans$ormers

>-SAMSS-6(>

"erhead-T%=e /isribuion Trans$ormers

>-SAMSS-6(7

'ad-Mouned, Three-'hase /isribuion Trans$ormers

>-SAMSS-7))

Maerial, Manu$a+ure, and 'reser"aion o$ Wood 'oles

Pa#e 3 o$ %



>-SAMSS-7)*

Maerial, Manu$a+ure 5 'reser"ai"e Treamen o$ Wood Crossarms

6-SAMSS-6)*

Medium 9olage 'ower Cables, 6 #9 hrough (6 #9

6-SAMSS-6)(

Submarine 'ower Cable 6 #9 hrough 6 #9

7-SAMSS-6)*

Meal &n+losed Low-9olage Swi+hgear Assemblies

7-SAMSS-6)(

Indoor Conrolgear < Low-9olage

7-SAMSS-6)>

Indoor Meal-Clad Swi+hgear  o (1 #9

7-SAMSS-6)7

Indoor Conrolgear < High 9olage

7-SAMSS-6)3

High 9olage Moor Conroller < udoor

7-SAMSS-6)1

S!7 ?as Insulaed Cir+ui 0rea#ers, udoor < (>.6 #9 hrough *() #9

7-SAMSS-6)

Manuall% =eraed 'ad Mouned S!7 Swi+hgear@  #9 o (7 #9

7-SAMSS-6

Meal-&n+losed 0us Indoor and udoor

:oe ha SA&S-'-7 =rohibis he use o$ bus du+ in new insallaions; 7-SAMSS-6*

udoor Swi+hra+# < Low 9olage

7-SAMSS-6>

Conrol and =roe+i"e Rela% 'anel < Indoor

7-SAMSS-63

AdBusable !reuen+% /ri"e S%sem <  #9 and Abo"e

7-SAMSS-61

Low 9olage 'anel 0oards

7-SAMSS-64

Indoor Swi+hboard - Low 9olage

7-SAMSS-6*)

Cablebus

7-SAMSS-6*

Indoor Auomai+ Trans$er Swi+h < Low 9olage

3-SAMSS-6)*

!orm-Wound Indu+ion Moors *6) H' and Abo"e

3-SAMSS-6)(

Se"ere /u% Toall% &n+losed Suirrel Cage Indu+ion Moors o *6) H'

3-SAMSS-6)

S%n+hronous ?eneraors

3-SAMSS-6

Saionar% Sorage 0aeries

3-SAMSS-6>

0aer% Chargers

Pa#e - o$ %



3-SAMSS-66

Auiliar% &le+ri+al S%sems $or S#id-Mouned &ui=men

3-SAMSS-67

2ninerru=ible 'ower Su==l% S%sem

3-SAMSS-61

/iesel ?eneraor Se

3-SAMSS-6*)

!orm Wound 0rushless S%n+hronous Moors

Saudi (ramco Standard ra+in#s A&-)(7)>

'ole Seing :* Shees;

AA-)(7)6

/ouble /eadend &nd Sru+ure 'ole Insallaion /eails

A/-)(7)7

0onding /eails, Armless Consru+ion, Angle Sru+ure, 7) o 4) /egrees

AC-)(7)*

Armless Consru+ion, Angle Sru+ure, 6 o () /egrees, *.>, >.7, (.1, and (>.6 #9

AC-)(7)**

Armless Consru+ion, Angle Sru+ure, 7) o 4) /egrees, *.>, >.7, (.1, and (>.6 #9

A/-)(7)*(

?u% and An+hors, /own ?u%s :( Shees;

AA-)(7)*6

!our-Wa% Manhole :* shees;

A&-)(7)(>

'ole !ooing In+reased 0earing Area

A&-)(7)(7

'ole Ra#e

A&-)(7)(3

'ole 'roe+ion ?uard

A/-)(7)7(

?u% and An+hors, ).1 # Sidewal# ?u% Insallaion

A/-)(7)7>

?u% and An+hors 'ower Insalled S+rew

A/-)(7)77

?u% and An+hors, "erhead ?u% :( Shees;

A/-)(7)3)

Ro+# An+hor Insallaion

AC-)(7)34

Armless Consru+ion, Tangen Sru+ure, ) o * /egrees, *.>, >.7, (.1, and (>.6 #9

AC-)(7)16

Armless Consru+ion, Angle Sru+ure, ) o 6 /egrees, *.>, >.7, (.1, and (>.6 #9

AC-)(7)*

Armless Consru+ion, Angle Sru+ure, () o 7) /egrees, *.>, >.7, (.1, and (>.6 #9

AC-)(7)>

Armless Consru+ion, !ull /ead-end Sru+ure, *.>, >.7, (.1, and (>.6 #9

Pa#e / o$ %

ocument 1esponsibilit&: Electrical Issue ate: 2" September, 200 Next Planned Update:  !ctober, 200" AC-)(7* AA-)(7*

S(ES.P.00 'asic Po+er S&stem esi#n Criteria Armless Consru+ion, (-'hase Ta= Sru+ure, *.>, >.7, (.1, and (>.6 #9 Three-'hase Cable Terminaion, "erhead Armless o 2nderground :* shees;

A/-)(7((

'ole To= Swi+h ?rounding /eail

A/-)(7(6

0onding /eails, 'os Insulaors

A/-)(7(7

0onding /eails, Armless Consru+ion, Angle Sru+ure, () o 7) /egrees

AA-)(7*64

Airsri= Lighing La%ou

A0-)(7*3(

Sur$a+e Mar#er 2nderground &le+ri+ Cable

A0-)(7(4

Sandard Sign D/A?&R HI?H 9LTA?& 8&&' AWAED

A0-)(7(*7

Sandard Sign@ 2nderground &le+ri+ Cable

A0-)(7(13

Tan# ?rounding

AA-)(7(4) :Shee ;

Tangen 'ole wih Ta=-$$ Trans$ormer Insallaion

AA-)(7(4) :Shee *;

/ead-&ndFTa=-$$ 'ole wih Trans$ormer Insallaion

A0-)(7(41

/eails - Sree Lighing

AA-)(763*

?rounding Arrangemen $or /is+onne+ Swi+h Sru+ure

A0-)(73>6

Lighing 'ole, Ta=ered Seamless Aluminum (M $or Se+uri% !en+e

A0-)(737) :Shee ;

'erimeer 5 Area Lighing, T%=i+al La%ou, 'ar o$ 'lan Area :SS/F(, SA&S--(;

A0-)(737) :Shee *;

&lemenar% /iagram 'ower 5 Conrol Cir+uis $or Se+uri% Lighing =er SS/F(, SA&S--(

A0-)(7377

Sandard &le+ri+al S%mbols ne-Line /iagram :'ower; :Shees  o (;

A0-)(7377 :Shee >;

Sandard &le+ri+al S%mbols - 'lan La%ou

A/-)(713>

Insallaion o$ /ire+ 0uried &le+ri+ Cable and Condui

Pa#e 8 o$ %



Saudi (ramco )4-&?

Reues $or Wai"er o$ Saudi Aram+o &ngineering Reuiremen

Saudi (ramco 9eneral Instruction ?I-)))*.33

4

'ro+edures and ?uidelines $or Handling 'ol%+hlorinaed 0i=hen%ls :'C0Gs;

Definitions Approval: 7ritten approval o$ t*e ESD Coordinator ) Base Voltage: *e bus volta#e calculated b& startin# +it* t*e nominal voltage at t*e s+in# bus and calculated $or eac* bus based on t*e trans$ormer turns ratios) Bus Tie Breaker: ( brea=er used to connect t*e t+o busses o$ secondary-selective s&stem. Captive Transformer: ( trans$ormer +*ose output is dedicated to a sin#le piece o$ utiliation e!uipment ) Controlgear: Euipment manu$actured to eit*er 8.S(MSS./03 4>o+ ?olta#e Control#ear6, 8.S(MSS./08 4@i#* ?olta#e Control#ear6 or 8.S(MSS./0% 4@i#* ?olta#e Motor Controller . !utdoor6) Critical "oads : (re loads:

a6

7*ere a sin#le contin#enc& $ailure could cause a loss o$ po+er +*ic* +ould create an immediate *aAard to *uman li$e or cause a si#ni$icant reduction in Saudi (ramco total production, or

b6

7*ic* cannot be s*ut.do+n $or a minimum o$ $ive consecutive da&s annuall& $or sc*eduled maintenance on upstream po+er suppl& euipment)

Examples o$ critical loads are: ma;or computer centers, critical care areas in clinics and *ospitals, ma;or o$$ice buildin#s, process units in ma;or #as plants, ma;or 9!SPs, and process units in re$ineries) Demand: Electrical load avera#ed over a speci$ied time p eriod) ESD Coordinator: Coordinator, Electrical S&stems ivision, Consultin# Services epartment) #ig$ Voltage: ?olta#es 000 ? or #reater unless ot*er+ise desi#nated in a speci$ic MS(E1 or re$erenced international standard) Commentary Note: The term medium voltage is no longer being used in most North American and essentially all European (IEC) standards. Where used, it generally reers to system

Pa#e % o$ %



!oltages greater than " #$ but less than "%% #$. As used in &audi Aramco, medium voltage generally reers to !oltages '. #$ and abo!e but less than .* #$.

%ndustrial &acilities: 1e$er to S(ES.P.8 $or de$inition) "o' Voltage: ?olta#es less t*an 000 ?, unless ot*er+ise desi#nated in a speci$ic MS(E1 or re$erenced international standard) (SAE) : Mandator& Saudi (ramco En#ineerin# 1euirements)

Examples o$ MS(E1s are Saudi (ramco Materials S&stem Speci$ications 4S(MSSs6, En#ineerin# Standards 4S(ESs6 and Standard ra+in#s 4S(Ss6) *ominal Voltage : 1e$er to able ) +perating "oad :

a6

b6

Commentary Note: +epending on the nature o the loads, the operating load may be substantially less than the total connected load.

,CB free: Containin# less t*an  ppm Pol&c*lorinated bip*en&l) SA(SS: Saudi (ramco Materials S&stem Speci$ication) Secondary-Selective: ( s'itc$gear assembl& consistin# o$ t+o buses connected +it* a sin#le us tie reaker ) Eac* bus *as one brea=er to receive incomin# po+er) 4i)e), po+er $lo+ into and bet+een t*e t+o busses is controlled +it* t*ree brea=ers6) *ese sc*emes are standardiAed) 1e$er to S(ES.P.8 $or standardiAed sc*emes) Secondary-selective Sustation: ( substation $ed b& t+o independent po+er sources 4di$$erent transmission or distribution lines6 +*ic* consists o$ one or more sets o$ t+o trans$ormers and associated secondary-selective s'itc$gear ) (lso re$erred to as a double.ended substation) Severe Corrosive Environment: (s described in Section " o$ t*is standard) S'itc$gear: Euipment manu$actured to eit*er 8.S(MSS./02 4>o+ ?olta#e S+itc*#ear6 or 8.S(MSS./0- 4@i#* ?olta#e S+itc*#ear6) S'itc$rack: Euipment manu$actured per 8.S(MSS./2) ,S: Uninteruptible Po+er Suppl&) tiliation device/e!uipment: Euipment +*ose primar& $unction is to convert electrical ener#& to anot*er $orm or store electrical ener#&) Examples o$ utiliAation euipment +ould be motors, *eaters, lamps, batteries, etc) Euipment directl&

Pa#e  o$ %



$eedin#Bcontrollin# t*e utiliAation euipment is considered part o$ t*e utiliAation euipment 4e)#), (<s, reduced volta#e starters, batter& c*ar#ers, etc)6)



!eneral /)

erms in old $ont are de$ined +it*in Section -)

/)2

'asic esi#n Codes Electrical po+er s&stems s*all be desi#ned and constructed in accordance +it* t*e latest edition o$ N
/)3

"o' voltage (C distribution s&stems s*all be protected b& circuit brea=ers)
/)-

(ll interruptin# devices s*all be $ull& rated $or t*e s*ort circuit dut&) 1e$er to S(ES.P.8 $or additional details and exceptions) Commentary Note: This means, or eample, that designs based upon series1rated or cascade1rated e2uipment shall not be used.

/)/

!nl& secondary-selective s'itc$gear s*all be used to $eed critical loads ) Eception: Critical acilities or e2uipment ed rom a single1ended substation bus hich has a standby generator capable o automatically supplying the re2uired poer to the bus ithin "% seconds ater a poer ailure are p ermitted ith approval Commentary Note: &econdary selecti!e sitchgear conigurations ha!e been standardi3ed. 4eer to &AE&101""5 or details o the standari3ed schemes.

/)8

/)%

Electrical euipment $or $irepump installations s*all meet t*e reuirements o$ N
!ire 'roe+ion 5 Sa$e% Reuiremens $or $$shore 'rodu+ion !a+iliies

SA&S-0-)3

!ire Waer S%sem /esign

SA&S-'-7

Swi+hgear and Conrol &ui=men

Existin# euipment containin# PC' s*all be *andled in accordance +it* 9I. 0002)%%) Insulatin# materials, insulatin# liuids, etc), in ne+ euipment s*all be PC'.$ree) Pa#e " o$ %


"


/)

Inter$aces +it* communications s&stems s*all be in accordance +it* S(ES.. Series)

/)"

1e$er to S(ES.P.8 $or clearance around out door pad.mounted euipment) 4e)#), Pad.mounted distribution trans$ormers, pad.mounted s+itc*#ear, etc)6)

/)0

(pproval or aut*orit& *avin# ;urisdiction issues contained +it* t*e NEC 4i)e), N
Design #asis 8)

S&stem ?olta#e and
*e $reuenc& o$ alternatin# current electrical po+er s&stems s*all be 80 @A) Eception: Eisting acilities ith *% 63. poer systems (including *% 63. systems ith nominal voltages hich do not comply ith Table ") and additions, replacements, etc., to these systems that do not result in a re2uirement to add *% 63. generation capacity, are permitted.

8))2

*e primar& distribution +it*in industrial facilities s*all be 3) =?, t*ree.p*ase, t*ree.+ire) Secondar& distribution s*all be eit*er -80?, t*ree p*ase, t*ree +ire andBor -0?, t*ree p*ase t*ree +ire) Commentary Note: &AE&101""5 prohibits 7%$ switchgear or controlgear in industrial faciliies to be deri!ed rom a "5%$ system.

8))3

*e $ollo+in# describes t*e nominal s&stem volta#e and #roundin# +*ic* s*all be used at t*e respective volta#e listed in able ) Tale 0 1 *ominal Voltage "evels $ominal %oltage

&'ase

(ire

T)pe !rounding

120240

Sing!e

/ree ire

So!i"

20120

/ree

o+r ire

So!i"

40

/ree

/ree ire

So!i"

40

/ree

/ree ire

3ig/ &esistance See 5ote %6

402'' See 5ote 6

/ree

o+r ire

So!i"

4,1*0

/ree

/ree ire

7ow &esistance

1%,00

/ree

/ree ire

7ow &esistance

*9,000

/ree

/ree ire

So!i"

11(,000

/ree

/ree ire

So!i"

Pa#e 0 o$ %

ocument 1esponsibilit&: Electrical Issue ate: 2" September, 200 Next Planned Update:  !ctober, 200" 2%0,000

S(ES.P.00 'asic Po+er S&stem esi#n Criteria /ree

/ree ire

So!i"

$otes8 1. Eisting +ngro+n"e" systems an" eisting systems wit/ "ierent #o!tage !e#e!s e.g., 2.4 :;6 are not re<+ire" to be c/ange" retroacti#e!y. 2. A""itions or etensions to eisting systems wit/ "ierent #o!tage !e#e!s t/at increase t/e =;A capacity o t/e system is not permitte". /e eception is i t/e new or rep!acement e<+ipment /as a "+a! #o!tage rating wit/ a #o!tage !e#e! in ab!e 1. %. See SAES-P-111 or restrictions an" appro#a!s re<+ire" or /ig/ resistance gro+n"ing. 4. Stea"y-state ser#ice an" +ti!i>ation #o!tage ranges s/a!! be per ;o!tage &ange A, A5S? C4.1 or t/e abo#e nomina! #o!tages. or Sa+"i Aramco insta!!ations, t/e ser#ice #o!tage is "eine" as t/e #o!tage at t/e secon"ary o a s+pp!y transormer /a#ing a primary #o!tage o more t/an *00 #o!ts. (. See SAES-P-111 or speciic system gro+n"ing re<+irements an" or gro+n"ing re<+irements or specia! app!ications s+c/ as "own/o!e p+mp motors. *. SEC nomina! "istrib+tion #o!tages may be +se" on t/e 'ig' voltage si"e o transormers e" "irect!y rom a SEC "istrib+tion system. '. /ese nomina! system #o!tage re<+irements "o not app!y to captive transformers in specia!ty app!ications s+c/ as s+pp!ying s+bmersib!e p+mp motors an" /ig/ #o!tage a"@+stab!e re<+ency "ri#e app!ications. ;o!tages or captive transformer app!ications s/a!! be re#iewe" by t/e ESD Coordinator . . 402'' is acceptab!e at s+b-"istrib+tion !e#e!s or !ig/ting on!y.or eamp!e, "istrib+tion transormer to pane!boar"s ee"ing !ig/ting6. Sa+"i Aramco materia! speciications pro/ibit 402''; ratings or lo* voltage s*it'gear an" controlgear .

8)2

Stead& state volta#e ran#e, under all stud& conditions, s*all be as $ollo+s: 8)2)

8)2)2

8)3

"o' Voltage S&stems

i6

(t branc* circuitBdistribution euipment connection points 4e)#), s'itc$gear , controlgear , panelboards, s'itc$racks , etc)6: "/ to 0/ o$ nominal voltage )

ii6

(t li#*t $ixtures: ")% to 0-)2 o$ nominal voltage )

iii6

(t utiliation e!uipment ot*er t*an li#*ts: "0 to 0-)2 o$ nominal voltage )

#ig$ Voltage S&stems

i6

(t branc* circuitBdistribution euipment connection points 4e)#), s'itc$gear , controlgear , etc)6: "%)/ to 0/ o$ nominal voltage )

ii6

(t t*e utiliAation device: "0 to 0-)2 o$ nominal voltage )

?olta#e rop associated +it* Motor Startin# 8)3)

7*en a motor is started, t*e volta#e at ever& utiliation device , an&+*ere in t*e electrical s&stem, s*all not drop belo+ / o$ t*e nominal voltage )

8)3)2

7*en a motor is started, t*e volta#e at t*e terminals o$ t*e motor bein# started s*all not drop belo+ / o$ t*e rated motor volta#e) Eceptions:

Pa#e  o$ %



8or high voltage motors, hen appro!ed and documented by the motor manuacturer, a drop to 7%9 o rated motor !oltage is permitted at the terminals o the motor being started. 8or electric submersible pumps in oil or production ater ser!ice, steady state and motor starting !oltage drops or motor branch circuits and at motor terminals o shall meet recommendations o A0I ""&, 4ecommended 0ractice or Electric &ubmersible 0ump Installations.

8)-

irect Current S&stems Maximum total volta#e drop $or main, $eeder, and branc* c ircuits s*all not exceed /) *e avera#e volta#e drop in branc* circuits s*all not exceed 2 +it* a maximum o$ - at t*e most distant load)

+

S)stem Studies S&stem studies are reuired $or ne+ $acilities and ma;or additions to existin# $acilities) I$ uncertain +*et*er t*e additions to existin# $acilities are ma;or, contact t*e ESD Coordinator) %)

*e $ollo+in# studies s*all be per$ormed to veri$& proper desi#n o$ t*e electrical po+er s&stems and euipment: %))

>oad.$lo+)

%))2

S*ort.circuit)

%))3

Motor.startin#)

*e Electrical ransient (nal&Aer Pro#ram 4E(P6 Po+er Station 47indo+s version6 s*all be used to conduct t*e above studies) Input and output data $iles s*all be $urnis*ed to t*e $acilit& proponentDs en#ineerin# or#aniAation and to Consultin# Services epartment) Commentary Note: 8or ma;or additions to eisting acilities, the system study and perormance re2uirements apply to ne and eisting acilities. 8or eample, i motors are being installed in an eisting plant, the motor starting study re2uirement and results apply to the eisting motors.

%)2

(dditionall&, t*e studies indicated belo+ s*all be per$ormed on a case.b&.case basis) *e ESD Coordinator s*ould be contacted earl& enou#* in t*e pro;ect c&cle to assist in determinin# t*e need to conduct t*ese studies, t*e criteria $or t*e anal&sis, and t*e simulation tool to use) %)2)

ransient Stabilit&:
%)2)2

@armonic (nal&sis: I$ a non.linear load 4e)#), (<, Po+er Convertors, etc)6 is added to t*e po+er s&stem +it* a ratin# t*at is a si#ni$icant portion o$ t*e $acilit& capacit&) Pa#e 2 o$ %



Commentary Note: The IEEE1*"< standard ill be the basis or the harmonic studies. With 6$ A8+s, the A8+ manuacturer is responsible to p ro!ide harmonic mitigation. 4eer to "51&A-&&1*"= or details.

%)2)3

S+itc*in# ransient (nal&sis: I$ suppl& is si#ni$icantl& a$$ected b& induced capacitive s+itc*in# transients 4e)#), s*unt capacitor ban=s or len#t*& @? cables6) *e de$inition o$ si#ni$icant is *i#*l& application speci$ic) Contact t*e Saudi (ramcoBConsultin# Services epartmentBElectrical S&stems ivision i$ clari$ication is needed)

%)3

(ctual s&stem data and constraints s*all be used $or all studies)

%)-

Unless t*e actual impedance o$ a trans$ormer is =no+n $rom t*e trans$ormer tests, %)/ trans$ormer impedance tolerance s*all be used so t*at t*e speci$ied desi#n impedance is increased b& %)/ $or load $lo+ and motor startin# calculations and decreased b& %)/ $or s*ort circuit calculations)

%)/

%)8

Maximum s&stem volta#e levels s*all be determined assumin# all motor loads are disconnected and in t*e case o$ secondary-selective sustations t*at bot* trans$ormers are operational and t*e us tie reaker is in its normal state)

%)%

Normal s&stem volta#e levels s*all be based upon operating load.

%)

Minimum volta#e o$ eac* circuit s*all be based on t*e normal operating load plus t*e operating load o$ t*e lar#est spare 4standb&6 motor i$ t*e spare motor is not interloc=ed to prevent startin# +*ile t*e primar& motor is runnin#) Minimum volta#es do+n stream o$ secondary-selective sustations suppl&in# utiliation devices s*all be calculated assumin# t*at one trans$ormer is out o$ service and t*e us tie reaker is closed)

%)"

%)0



Eception: When calculating minimum !oltage le!els, it is acceptable to assume that the o1 load transormer taps can be set one step o the neutral position. In this case, all studies shall use the same transormer tap position.

,

%)

%)2

SiAin# o$ t*e electrical s&stem s*all be based upon usin# 0 o$ t*e sum o$ t*e operating load plus all =no+n $uture loads)

%)3

,S distribution s&stems desi#n s*all also ensure t*at s*ort.circuits, an&+*ere in t*e s&stem, t*at drops t*e nominal voltage at an& utiliation device , or utiliation device distribution euipment upstream o$ t*e s*ort circuit location to less t*an "0, s*all be cleared +it*in 4$our6 - milliseconds)

Electrical Area Classification Design )

@aAardous area classi$ication s*all be in accordance +it* t*e reuirements o$ S(ES.'.08)

)2

In *aAardous 4classi$ied6 areas, euipment t*at is reuired b& t*e National Electrical Code 4NEC6 to be approved 4except conduit sealin# $ittin#s6 s*all be labeled or listed or certi$ied b& an& o$ t*e a#encies listed in able 2 belo+) Tale 2 1 Certification Agencies for E!uipment in #aardous Areas

SA

n"erwriters 7aboratories, ?nc. 76

7abe!e" or !iste"

SACana"a

?nterte: esting Ser#ices ?S5A6 $ote8 ormer!y :nown as E7.

7abe!e" or !iste"

SA

5ationa! &ecogni>e" esting 7aboratory

Certiie"

SA

actory =+t+a! &esearc/ Corp. =6

Certiie"

Cana"a

Cana"ian Stan"ar"s Association CSA6

Certiie"



E!ectrica! E<+ipment Certiication Ser#ice EECS6 $ote- EECS operates t/e BASEEA certiication sc/eme

Certiie"

Be!gi+m

?nstit+te 5ationa! "es ?n"+stries Etracti#es ?5?E6

Certiie"

rance

7aboratoire Centra! "es ?n"+stries E!ectri<+es 7C?E6

Certiie"

)ermany

P/ysi:a!isc/ ec/nisc/e B+n"esansta!t PB6

Certiie"

?ta!y

Centro E!ettrotec/nico Sperimenta!e ?ta!iano CES?6

Certiie"

5et/er!an"s

E=A 5e"er!an" B.;. E=A6

Certiie"

+a!ity Ass+rance Ser#ices AS6 $ote- AS is a s+bsi"iary o Stan"ar"s A+stra!ia

Certiie"

A+stra!ia

Pa#e - o$ %



)3

Conduit sealin# $ittin#s s*all be labeled, listed, or certi$ied b& Under+riters >aboratories, Inc) 4U>6,
)-

Installations in *aAardous locations s*all be per t*e National Electrical Code, +it* t*e $ollo+in# additions and exceptions: )-)

EEx or Ex mar=ed euipment certi$ied or approved b& one o$ t*e a#encies listed in able 2 is acceptable) Class and one mar=in#s are not reuired on EEx or Ex mar=ed euipment but met*od o$ protection must be mar=ed and must correspond +it* NEC (rticle /0/ reuirements $or suitable protection met*od4s6 $or t*e *aAardous area +*ere t*e euipment is applied)

)-)2

Euipment suitable $or Class , one 0 locations ma& be used in Class , ivision  locations)

)-)3

Increased sa$et& 4protection t&pe e6 motors and terminal boxes are not permitted in one  locations) Commentary Note: The e protection method is acceptable i it is used in combination ith the d protection method, i d is the primary protection method.

)-)-

)-)/

.

NEC reuirements $or cable entr& are metF

ii6

t*e overall enclosure is $lameproo$ EEx d II 4explosion.proo$6 as a +*ole 4not onl& its components6F

iii6

t*e enclosure is constructed o$ a conductive metal or *as an inte#ral metal bondin# device t*at ensures a positive lo+.resistance bond bet+een conduits orBand cable armors enterin# or terminatin# at t*e enclosureF and

iv6

i$ used outdoors, t*e enclosure is rated a minimum o$ IP/-)

*e euipment selection, approval and labelin# reuirements in t*e NEC $or ivision 2 installations also appl& to one 2 installations)

Environmental Conditions ")

*e $ollo+in# locations s*all be deemed as severe corrosive environments $or t*e purposes o$ selection o$ electrical euipment: "))

!utdoor o$$s*ore locations

Pa#e / o$ %


")2


"))2

!utdoor ons*ore locations +it*in one =ilometer $rom t*e s*oreline o$ t*e (rabian 9ul$

"))3

!utdoor ons*ore locations +it*in t*ree =ilometers $rom t*e s*oreline o$ t*e 1ed Sea)

"))-

(ll o$ t*e 1as anura 1e$iner& and erminal)

Electrical euipment s*all be rated in accordance +it* t*e reuirements o$ t*e S(ES.P or S(MSS speci$ic to t*e euipment and its installation) 7*en not covered in t*ese documents: ")2)

")2)2

0aimum Dail) &eak C

+t"oors Air6

4(

(0

Eart/ Soi!6

40

40

cean ater6

%0

%0

?n"oors in e!!-;enti!ate" B+i!"ings

40

(0

?n"oors in Air-Con"itione" B+i!"ings

See 5ote 1 be!ow

See 5ote 1 be!ow

5on-#enti!ate" Enc!os+res Epose" to t/e S+n

(* See 5ote 2 be!ow

(* See 5ote 2 be!ow

/ocation

$otes8

1.

Per t/e "esign temperat+re o t/e air con"itioning system See SAES--0016 or %0FC, w/ic/e#er is greater.

Commentary Note: &tationary storage batteries are normally rated or operation in '*>C ambient. &ee &AE&101"% or battery rating and ambient temperature re2uirements and &AE&1?1%%" or battery room design temperature re2uirements. 2.

GEecti#eG ambient temperat+re insi"e an e<+ipment enc!os+re "+e to combine" eects o a 4(FC ambient o+tsi"e t/e enc!os+re, FC rise rom so!ar ra"iation, an" an ass+me" %FC rise ca+se" by an interna! /eater or ot/er /eat pro"+cing "e#ice.

15 &rotection S)stems 0)

Protection reuirements $or speci$ic euipment is covered +it*in t*e applicable SA(SS to +*ic* t*e euipment is connected)

Pa#e 8 o$ %

ocument 1esponsibilit&: Electrical Issue ate: 2" September, 200 Next Planned Update:  !ctober, 200" 0)2


1e$er to S(ES.P.- $or #eneral protection reuirements 4e)#), rela& coordination stud& criteria6)

29 September, 2004

Revision Summar) =a@or re#ision.

Pa#e % o$ %

SAES-P-100 Basic Power System Design Criteria

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