SP 1109 1 Earthing and Bonding (ERD 64 10) 2

 

Petroleum Development Oman L.L.C.

UNRESTRICTED

$arc% &00"

Document ID: SP-1109 ERD-!"-09# '(l(n) *e+: ,-1

SP 1109 Spec((cat(on or Eart%(n) an/ on/(n)

This document is the property of Petroleum De Development velopment Oman, LLC. Neither the whole nor any  part of this document may be disclosed to others or reproduced, stored in a retrieval system system,, or  transmitted in any form by any means (electronic, mechanical, reproraphic recordin or otherwise! without prior written consent of the owner owner..

 

Specification for Earthing and Bonding

Version 4.0  

Authorised for issue March 2004

"ined #............................................................ C$D%, &lectrical &nineerin

The followin followin is a brief summary summary of the ' most recent revisions revisions to this docum document. ent. Deta Details ils of all revisions prior to these are held on file by the issuin department.

er2(on No. ersion ) ersion 1.) ersion 4.)

Date Oct *+ Oct *2 5une **

ersion +.)

5une 4))1

ersion '.)

SP-1109

,ut%or &-' &-' "aif 6l "umry, O7&-+ %um umai aid d 6l %arth rthy

Scope 3 Remar*2 Oriinal issued as &D/0'/)* $ormat revised and te3t updated Converted to "pecification as per PDO Policy Cascade 8 minor chanes to the te3t 7ntro ntrodu duce ced d 9arc 9arcon onit itee as aarrti tifi fici ciaal me meth thod od o of  f  reducin earth resistivity

9arch

%umaid 6l %arthy

outi outine ne thre threee yearl yearly y revis revision ion and cap capture ture

4))'

TT&-'1

e3perience throuh several parties 7nclude 7nc ludess re: re:uir uireme ements nts for for &le &lectr ctroma omanet netic ic Compatibility (&9C!

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March 2004

 

Version 4.0

Specification for Earthing and Bonding  

Contents 1

Intr Introduction. oduction........................ .............................................. .............................................. .............................................. ....................................... ................ 5

1.1

PURPOSE. PURPOSE........ .............. ............... ............... .............. .............. ............... ............... .............. ............... ............... .............. ................................ .........................4 4

1.&

,PPLIC, ,PPLIC,LE LE ST,ND ST,ND,RD ,RDS5 S5 SPECI SPECI'IC, 'IC,TION TION ,ND CODES........ CODES................ ............... ......... ..4 4

1.4.1 1.4.4 1.4.+

1.6

CO$PLI,N CO$PLI,NCE CE 7IT8 ST,ND ST,ND,RD ,RDS....... S............... ............... .............. ............... ............... .............................. .......................! !

1."

SSTE$ SSTE$ REPRESEN REPRESENT T,TION.......... TION................. ............... ............... .............. ............... ............... ............................... ........................! !

1.+.1

1.+.4 1.+.4 1.+.+

2

PDO "tandards...... "tandards............ ............ ............ ............ ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... .................... .................... .......; .; "7O "7OP-"7 P-"7&P &P "tandards....... "tandards............ ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ..................... ...................... ........; .; 7nterna 7nternational tional "tandar "tandards...... ds............ ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ................... ................... .......0 .0 Lanua Lanuae e and .>

Scope................................ Scope....................................................... .............................................. .............................................. ........................................ ...................8 &.1

ELECTR ELECTRIC, IC,L L PO7ER PO7ER SSTE$ SSTE$ E,R E,RT8IN.. T8IN..... ....... ........ ....... ....... ........ ....... ....... ........ ......... ........... .......... ....; ;

4.1.1 ?en ?eneral..... eral.......... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ .........2 4.1.4 % ?enerators. ?enerators....... ............ ........... ........... ............ ............ ............ ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... .................. ..............1) .1) 4.1.+ L ?enerator ?eneratorss ('1;!... ('1;!......... ............ ........... ........... ............ ............ ............ ............ ............ ........... ........... ............ ........... ........... ...................... .................1) .1) 4.1.' Pow Power er Tra Transfor nsformers... mers........ ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ................. ...........11 11 4.1.'.1 % ?enera ?enerator tor .4>

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SP-1109

 

Specification for Earthing and Bonding 4.4.1) 4.4.11 4.4.11 4.4.14 4.4.1+ 4.4.1' 4.4.1; 4.4.10 4.4.1> 4.4.12 4.4.1* 4.4.4)

Version 4.0  

9iscellane 9iscellaneous ous 9etalwor 9etalwor@..... @........... ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ........... .....4> 4> =ell Pad &arthin............ &arthin................. ........... ............ ............ ............ ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... .......... ....42 42 5etties.. 5etties........ ............ ............ ........... ........... ............ ........... ........... ............ ............ ........... ........... ............ ........... ........... ............ ............ ............... ......................... .................. ..4* 4* oad oad T Tan@er an@er Lo Loadin adin $acilitie $acilities..... s........... ............ ........... ........... ............ ............ ............ ............ ............ ............. ....................... ..................... .....4* 4* oad oad T Tan@er an@er $iure 44. # 0.0-).'1; @, Nyn Three Phase &arthin Transformer.............................................12 Transformer.............................................12 $iure 4+. # ++-).'1; @, Nyn Three Phase &arthin Transformer..............................................12 Transformer............................................. .12 $iure 4'. # Low oltae oltae 7T "ystem.............................................................. "ystem................................................................................................ ...................................1* .1* $iure 4;. # Low oltae oltae 7T "ystem.............................................................. "ystem................................................................................................ ...................................4) .4) $iure 40. # Low oltae oltae TN "ystem...............................................................................................41 "ystem.............................................................................................. .41 $iure 4>. # ecommended alue alue of &arth esistance......................................................... esistance................................................................... ...........+4 .+4 $iure 42. # CT 7nstalled on sinle core armoured cable................................................................+2 cable................................................................+2 $iure 4*. # &arth Conductor "iEe...................................................................................................+* "iEe................................................................................................... +*

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SP-1109

 

Specification for Earthing and Bonding

1

Version 4.0  

Introduction 6 "pecification ("P! is a document that Petroleum Development Oman (PDO! issue to specify their re:uirements, procedures and standards. The prefi3 for these these documents shall  be "P. "P.

1.1

PURPOSE This "P specifies the earthin 8 bondin arranements for both permanent and temporary installations in PDO sites and covers the followin# &lectrical "ystem ?roundin.  



1.2

&:uipment ?roundin &:uipment ?roundin for electrical electrical e:uipment e:uipment and non/ele non/electric ctrical al metal metallic lic e:uipment e:uipment li@e tan@s, vessels, etc. "tatic and Lihtnin Protection ?roundin.

AP APPL PLICA ICABL BLE E S SA!" A!"AR AR"S# "S# SP SPEC ECI$I I$ICA CAIO IO! ! A! A!" " CO" CO"ES ES The followin "tandards, specifications and codes should be consulted when applyin the re:uir re: uireme ement nt of this "tandar "tandard. d. 6ll listed listed docume documents nts shall be lates latestt issue issue e3ce e3cept pt thos thosee documents prescribed by date.

1.2.1 .2.1

1. 1.2. 2.2 2

P"O Stand tanda ard rds s "P/1)**

/

"pecification for &lectrical 7nstallation Practice

"P/11)+

/

&lectrical &n &nineerin ? ?u uidelines (6mendment to to D&P ++.0'.1).1)!

"P/114)

/

"pecification fo for %ih oltae " "w witchear an and C Co ontrol ? ?eear (6mendment to D&P ++.0>.;1.+1!

"P/1141

/

"pecification ffo or Low oltae "witchear aan nd Co Control ? ?eear (6mendment to D&P ++.0>.)1.+1!

"P/11);

/

"pecification fo for &lectrical " "ttandard D Drrawins

"P/11)2

/

"pecification for &lectrical Procedures (&"OP0 8 41!

"P/111+

/

"pecification for 1+4 @ "ubstation

"P/1142

/

Cathodic Protection Desin

P/14+'

/

"afe =or@in Procedures on Cathodically Protected "tructures

"afety

rules

Operational

SIOP SIOP%S %SIE IEP P St Stan anda dard rds s

SP-1109

D&P D& P ++.0'.1 ++.0'.1).1) ).1)/?e /?en n/

&lectr &lectrical ical &ni &ninee neerin rin ?ui ?uidel delines ines

D&P ++.0 ++.0>. >.;1 ;1.+ .+1 1

/

% "wit itch che ear ar 8 Contr ontrol ol ?ear 6ssem sembl blie iess

D&P ++.0 ++.0>. >.)1 )1.+ .+1 1

/

L "wit itcche hear 8 Contr ontrol ol ?ear 6ss ssem embl blie iess

D&P +4.+>.4).1)

/

7nstrument "i "inal Li Lines

D&P D& P ++.0' ++.0'.1 .1).+ ).++ + ?en.

&l &lec ectr trom oma anet netic ic Comp Compat atib ibili ility ty &9 &9C C

"hell "afety Committee

"tatic &lectricity

/

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March 2004

 

Version 4.0

1.2.& 1.2.&

Specification for Earthing and Bonding  

Inte Intern rnat atio iona na'' S Sta tand ndar ards ds 6N"7 6N "7-7& -7&&& && " "td/ td/2)/ 2)/4)) 4))) ) /

7&& 7&&& & ?u ?uide ide for for "af "afety ety in 6C "ubsta "ubstation tion ?round ?roundin in

7&&

/

eulations for &lectrical 7nstallations

7&C 0));)

/

7nternational &lectrotechinical ocabulary

7&C >*/1'

/

&lectrical 77n nstallations in in & &3 3plosive ?as 6tmospheres (o (other   than mines!

7&C 0)+0'

/

&lectrical 7nstallations in uildins

7&C '>*/1

/

&ffects of Current Passin Throuh the %uman ody

7&&& "td 1'4

7&&& e ecommended Practice for roundin o off 7ndustrial an and commercial power systems

The above D&Ps and "Ps are available from Live Lin@ 8 "hell =eb.

1.& 1.&

CO COMP MPLI LIA! A!CE CE (I (I) ) S S A! A!"A "AR" R"S S 6ll re:uirements of this "pecification shall apply e3cept where e:uipment 9anufacturerFs standards are more strinent, then the latter shall apply. $or $or any deviat deviations ions from from this "pecif "pecifica ication tion,, the Con Contrac tractor tor sha shall ll obtain obtain the writte written n areement of PDO prior to e3ecution of the related enineerin wor@. 7n all cases Company shall determine thethis ade:uacy of desin carried out and =or@s e3ecuted by the the Contractor in accordance with "pecification.

1.&.1 1.& .1

Lan*ua Lan*ua*e *e and and Unit Units s of Measur Measure+ e+ent ent &nlish lanuae and the 7nternational "ystem ("7! units of measurement in all documents and drawin drawinss shall be use usedG dG refer refer to 7"O +1 and 7"O 1) 1))). )). =h =here ere the "7 unit is a conversion of a manufactured dimension, the oriinal dimension can be put in brac@ets, after the "7 units. $or e3am e3ample, ple, ;) mm (4 in! pipe.

1.4 1.4 1.4.1

S, S,S SEM EM RE REPR PRES ESE! E! AI IO! O! Con-entio Con-entions ns for for rans ransfor+e for+err (indin* (indin* Arran*e Arran*e+ent +ents s 6n upper/case letter indicates the hiher voltae windin 6 lower/case lower/case letter indicates the th e lower voltae windin A or + indicates a star windin D or d indicates a delta windin  or E indicates a EiEa windin  N or n indicates that the star windin has h as an accessible neutral point

&3ampl &3a mple# e# Dyn Dyn is a transf transform ormer er with a de delta lta % windi windin n and a star L L  win windin din wit with h accessible neutral point

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SP-1109

 

Specification for Earthing and Bonding

1.4.2 1.4 .2

Version 4.0  

Con-en Con-entio tions ns for Sste Sste+ + Ear Earthi thin* n* Power system earthin arranements are distinuished as follows# 

The first letter denotes the earthin arranement at the source of enery# T H dire direct ct co conne nnecti ction on of one one or more more p poin oints ts to &ar &arth. th. 7 H al alll li live ve parts parts isola isolate ted d from from &arth &arth or one po point int co conne nnect cted ed to &ar &arth th throu throuh h an impedance.



The secon second d let letter ter den denote otess the rel relati ationsh onship ip of the e3p e3pose osed d con conduc ductiv tivee par parts ts of the installation to &arth# T H di dire recct ele lecctric trical al con onne nect ctio ion n of the the e3pos posed condu onduccti tiv ve part partss to &art &arth h independently of the earthin earth in of any point of the source of enery enery,,  N H direct electrical connection of the e3posed conductive parts to the earthed points of the source of enery, enery, which for 6C, is usually the neutral point.

 Note# e3posed e3posed conductive parts are always earthed.

$or low vo volta ltae e sy syste stems ms the desina desination tion FTNF FTNF is further further subdiv subdivide ided d depen dependin din on the arranement of neutral and protective arranement protective cond conductor uctors, s, the arranement bein denot denoted ed by a further letter or letters# " H neutral neutral and protecti protective ve functions functions provid provided ed by sepa separate rate con conducto ductors rs (N and P& P&!, !, C H neutral neutral and protec protective tive functio functions ns combined combined in a sinle sinle cconduct onductor or (P& (P&N!. N!.

D&D7C6T&D &6T% &L&CTOD&

$rame

 N&)

$rame of L enerator

>)

P& for earth fault return of L enerator

>)

"ee Note +

 Neutral connection of %-% %-% transformer P& for earth fault return of %-% transformer

14) >)

"ee Note 1 "ee Note +

 Neutral connection of L L transformer (% (%-'1; -'1; !

>)

P& for earth fault return of L transformer

14)

Tan@ of transformer

>)

"ure arresters

>)

$rame of motors

4;

9ain % and L switchear

>)

"ub/switchboards and panels

>)

Lihtin installation (supports, control bo3es, etc.!

4;

9ain conductor in earth rid

>)

ranch connector in earth rid "ubstation earth mat

4; 1;)

"ubstation perimeter fence earthin

>)

&3traneous &3traneo us condu conducti ctive ve parts parts (of (of non non/el /elect ectric rical al e:uipment!

4;

"ee Note +

"ee Note +

"ee Note 4

'()ure &9 : Eart% Con/uctor S(Ae NOTE:

1. This applies applies to solidly solidly earthed earthed % enerators enerators and %-L %-L transform transformers. ers. 7n case o off res resistance istance ear earthin, thin, a sinle sinle core core % cable cable shall shall be used betwee between n the neutra neutrall poi point nt of the en enera erator tor or  transformer and the neutral resistor (or the "inle Phase &arthin Transformer!. 4. "ubstation "ubstation earth mats shall be construct constructed ed from (;) (;) 3 +! mm bare hard drawn cop copper per bars bars.. +. This is the P& that shall be provided provided in case of ssinle inle core core cable cabless (ref (refer er 6ppendi3 6ppendi3 1G "ec "ection tion 4 of  this "P!.

SP-1109

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March 2004

 

Version 4.0

Specification for Earthing and Bonding  

6PP&ND7 6 # ?LO""6A ?LO""6A O$ D&$7N7T7ON", D&$7N 7T7ON", T&9" 6ND 6&76T7ON" 6&76T7ON" The followin terms and abbreviations used in this document, are defined below#

?eneral Terminoloy "hall

/

The word FshallF is to be understood as mandatory.

"hould

/

The word FshouldF is to be understood as stronly recommended.

9ay

/

The word FmayF is to be understood as indicatin a possible course of   action.

The Company

/

Petro troleum Development Om Oman L L..L.C. 9u 9uscat, "u "ultanat nate o off Oman.