UFGS_26_28_01.00_10_Coordinated_Power_System_Protection.pdf

USACE / NAVFAC / AFCEC / NASA UFGS- 26 28 01. 00 10 ( Oct ober 2007) Pr epar i ng Act i v i t y: USACE Super sedi ng UFGS- 26 28 01. 00 10 ( Apr i l 2006)

UNI FI ED FACI LI TI ES GUI DE SPECI FI CATI ONS

Ref er ences ar e i n agr eement wi t h UMRL dat ed Apr i l 2018

SECTI ON TABLE OF CONTENTS

DI VI SI ON 26 - ELECTRI CAL

SECTI ON 26 28 01. 00 10

COORDI NATED POWER SYSTEM PROTECTI ON

10/07

PART 1 GENERAL

1. 1 REFERENCES

1. 2 SYSTEM DESCRI PTI ON

1. 3 SUBMI TTALS

1. 4 QUALI TY ASSURANCE

1. 4. 1 Syst em Coor di nat or

1. 4. 2 Syst em I nst al l er

1. 5 DELI VERY, STORAGE, AND HANDLI NG

1. 6 PROJECT/ SI TE CONDI TI ONS

1. 7 EXTRA MATERI ALS

PART 2 PRODUCTS

2. 1 STANDARD PRODUCT

2. 2 NAMEPLATES

2. 3 CORROSI ON PROTECTI ON

2. 4 MOTOR CONTROLS AND MOTOR CONTROL CENTERS

2. 4. 1 Mot or St ar t er s

2. 4. 2 Reduced- Vol t age St ar t er s

2. 4. 3 Ther mal - Over l oad Pr ot ect i on

2. 4. 4 Low- Vol t age Mot or Over l oad Rel ays

2. 4. 4. 1 Gener al

2. 4. 4. 2 Const r uct i on

2. 4. 4. 3 Rat i ngs

2. 4. 5 Aut omat i c Cont r ol Devi ces

2. 4. 5. 1 Di r ect Cont r ol

2. 4. 5. 2 Pi l ot - Rel ay Cont r ol

2. 4. 5. 3 Manual / Aut omat i c Sel ect i on

2. 4. 6 Mot or Cont r ol Cent er s

2. 5 LOW- VOLTAGE FUSES

2. 5. 1 Gener al

2. 5. 2 Car t r i dge Fuses; Noncur r ent - Li mi t i ng Type

2. 5. 3 Car t r i dge Fuses; Cur r ent - Li mi t i ng Type

2. 5. 3. 1 Cont i nuous Cur r ent Rat i ngs ( 600 amper es and smal l er )

2. 5. 3. 2 Cont i nuous Cur r ent Rat i ngs ( gr eat er t han 600 amper es)

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2. 5. 3. 3 Mot or and Tr ansf or mer Ci r cui t Fuses

2. 6 MEDI UM- VOLTAGE AND HI GH- VOLTAGE FUSES

2. 6. 1 Gener al

2. 6. 2 Const r uct i on

2. 6. 3 Rat i ngs

2. 6. 3. 1 Fuse Cut out s

2. 6. 3. 2 Power Fuses

2. 6. 3. 3 E- Rat ed, Cur r ent - Li mi t i ng Power Fuses

2. 6. 3. 4 C- Rat ed, Cur r ent - Li mi t i ng Fuses

2. 6. 3. 5 R- Rat ed, Cur r ent - Li mi t i ng Fuses

2. 7 MOTOR SHORT- CI RCUI T PROTECTOR ( MSCP)

2. 7. 1 Gener al

2. 7. 2 Const r uct i on

2. 7. 3 Rat i ngs

2. 8 MOLDED- CASE CI RCUI T BREAKERS

2. 8. 1 Gener al

2. 8. 2 Const r uct i on

2. 8. 3 Rat i ngs

2. 8. 4 Cascade Syst em Rat i ngs

2. 8. 5 Ther mal - Magnet i c Tr i p El ement s

2. 8. 6 Sol i d- St at e Tr i p El ement s

2. 8. 7 Cur r ent - Li mi t i ng Ci r cui t Br eaker s

2. 8. 8 SWD Ci r cui t Br eaker s

2. 8. 9 HACR Ci r cui t Br eaker s

2. 8. 10 Mot or Ci r cui t Pr ot ect or s ( MCP)

2. 9 LOW- VOLTAGE POWER CI RCUI T BREAKERS

2. 9. 1 Const r uct i on

2. 9. 2 Rat i ngs

2. 10 MEDI UM- VOLTAGE CI RCUI T BREAKERS/ I NTERRUPTERS

2. 10. 1 Met al - Encl osed Type

2. 10. 2 Met al - Cl ad Type

2. 10. 3 SF6 I nt er r upt er s

2. 10. 4 Vacuum I nt er r upt er s

2. 10. 5 Rat i ngs

2. 11 OI L CI RCUI T BREAKERS FOR SUBSTATI ONS

2. 11. 1 I ncomi ng Li ne Ci r cui t Br eaker s f or Subst at i ons

2. 11. 2 Li ne Ti e Ci r cui t Br eaker s f or Subst at i ons

2. 12 SUBSTATI ON AND SWI TCHGEAR PROTECTI VE RELAYS

2. 12. 1 Const r uct i on

2. 12. 2 Rat i ngs

2. 12. 3 Over cur r ent Rel ays

2. 12. 4 Di r ect i onal Over cur r ent Rel ays

2. 12. 5 Aut omat i c Recl osi ng Rel ay

2. 12. 6 Tr ansf or mer Di f f er ent i al and Lockout Rel ays

2. 12. 7 Bus Di f f er ent i al and Lockout Rel ays

2. 13 I NSTRUMENT TRANSFORMERS

2. 13. 1 Gener al

2. 13. 2 Cur r ent Tr ansf or mer s

2. 13. 2. 1 For Oi l Ci r cui t Br eaker s

2. 13. 2. 2 For Power Tr ansf or mer s

2. 13. 2. 3 For Met al - Cl ad Swi t chgear

2. 13. 2. 4 For kW Hour and Demand Met er i ng ( Low Vol t age)

2. 13. 2. 5 Vol t age Tr ansf or mer s

2. 14 COORDI NATED POWER SYSTEM PROTECTI ON

2. 14. 1 Scope of Anal yses

2. 14. 2 Det er mi nat i on of Fact s

2. 14. 3 Si ngl e Li ne Di agr am

2. 14. 4 Faul t Cur r ent Anal ys i s

2. 14. 4. 1 Met hod

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2. 14. 4. 2 Dat a

2. 14. 4. 3 Faul t Cur r ent Avai l abi l i t y

2. 14. 5 Coor di nat i on St udy

2. 14. 6 St udy r epor t

PART 3 EXECUTI ON

3. 1 EXAMI NATI ON

3. 2 I NSTALLATI ON

3. 3 FI ELD TESTI NG

3. 3. 1 Gener al

3. 3. 2 Saf et y

3. 3. 3 Mol ded- Case Ci r cui t Br eaker s

3. 3. 4 Power Ci r cui t Br eaker s

3. 3. 4. 1 Gener al

3. 3. 4. 2 Power Ci r cui t Br eaker Test s

3. 3. 5 Pr ot ect i ve Rel ays

- - End of Sect i on Tabl e of Cont ent s - -

SECTI ON 26 28 01. 00 10 Page 3

USACE / NAVFAC / AFCEC / NASA UFGS- 26 28 01. 00 10 ( Oct ober 2007) Pr epar i ng Act i v i t y: USACE Super sedi ng UFGS- 26 28 01. 00 10 ( Apr i l 2006)

UNI FI ED FACI LI TI ES GUI DE SPECI FI CATI ONS

Ref er ences ar e i n agr eement wi t h UMRL dat ed Apr i l 2018

SECTI ON 26 28 01. 00 10

COORDI NATED POWER SYSTEM PROTECTI ON

10/07

NOTE: Thi s gui de speci f i cat i on cover s t he r equi r ement s f or t he coor di nat ed pr ot ect i on of power systems.

Adher e t o UFC 1- 300- 02 Uni f i ed Faci l i t i es Gui de Speci f i cat i ons ( UFGS) For mat St andar d when edi t i ng t hi s gui de speci f i cat i on or pr epar i ng new pr oj ect speci f i cat i on sect i ons. Edi t t hi s gui de speci f i cat i on f or pr oj ect speci f i c r equi r ement s by addi ng, del et i ng, or r evi s i ng t ext . For br acket ed i t ems, choose appl i cabl e i t em( s) or i nser t appr opr i at e i nf or mat i on.

Remove i nf or mat i on and r equi r ement s not r equi r ed i n r espect i ve pr oj ect , whet her or not br acket s ar e present.

Comment s, suggest i ons and r ecommended changes f or t hi s gui de speci f i cat i on ar e wel come and shoul d be submi t t ed as a Cr i t er i a Change Request ( CCR) .

PART 1 GENERAL

1. 1 REFERENCES

NOTE: Thi s par agr aph i s used t o l i s t t he publ i cat i ons c i t ed i n t he t ext of t he gui de speci f i cat i on. The publ i cat i ons ar e r ef er r ed t o i n t he t ext by basi c desi gnat i on onl y and l i s t ed i n t hi s par agr aph by or gani zat i on, desi gnat i on, dat e, and t i t l e.

Use t he Ref er ence Wi zar d' s Check Ref er ence f eat ur e when you add a Ref er ence I dent i f i er ( RI D) out s i de of t he Sect i on' s Ref er ence Ar t i c l e t o aut omat i cal l y pl ace t he r ef er ence i n t he Ref er ence Ar t i c l e. Al so use t he Ref er ence Wi zar d' s Check Ref er ence f eat ur e t o updat e t he i ssue dat es.

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Ref er ences not used i n t he t ext wi l l aut omat i cal l y be del et ed f r om t hi s sect i on of t he pr oj ect speci f i cat i on when you choose t o r econci l e r ef er ences i n t he publ i sh pr i nt pr ocess.

The publ i cat i ons l i s t ed bel ow f or m a par t of t hi s speci f i cat i on t o t he ext ent r ef er enced. The publ i cat i ons ar e r ef er r ed t o wi t hi n t he t ext by t he basi c desi gnat i on onl y.

ASTM I NTERNATI ONAL ( ASTM)

ASTM D2472 ( 2000; R 2014) St andar d Speci f i cat i on f or Sul phur Hexaf l uor i de

I NSTI TUTE OF ELECTRI CAL AND ELECTRONI CS ENGI NEERS ( I EEE)

I EEE 242 ( 2001; Er r at a 2003) Recommended Pr act i ce f or Pr ot ect i on and Coor di nat i on of I ndust r i al and Commer ci al Power Syst ems - Buf f Book

I EEE 399 ( 1997) Br own Book I EEE Recommended Pr act i ce f or Power Syst ems Anal ysi s

I EEE C2 ( 2017; Er r at a 1- 2 2017; I NT 1 2017) Nat i onal El ect r i cal Saf et y Code

I EEE C37. 04 ( 1999; R 2006; AMD 1 2003; R 2006; ERTA

2005; R 2006; AMD 2 2008; CORR 2009; I NT

2010) St andar d f or Rat i ng St r uct ur e f or AC Hi gh- Vol t age Ci r cui t Br eaker s

I EEE C37. 06 ( 2009) St andar d f or AC Hi gh- Vol t age Ci r cui t Br eaker s Rat ed on a Symmet r i cal Cur r ent Basi s - Pr ef er r ed Rat i ngs and Rel at ed Requi r ed Capabi l i t i es f or Vol t age Above 1000 V

I EEE C37. 13 ( 2015) St andar d f or Low- Vol t age AC Power Ci r cui t Br eaker s Used i n Encl osur es

I EEE C37. 16 ( 2009) St andar d f or Pr ef er r ed Rat i ngs, Rel at ed Requi r ement s, and Appl i cat i on Recommendat i ons f or Low- Vol t age AC ( 635 V and bel ow) and DC 3200 V and bel ow) Power Ci r cui t Br eaker s

I EEE C37. 2 ( 2008) St andar d f or El ect r i cal Power Syst em Devi ce Funct i on Number s, Acr onyms and Cont act Desi gnat i ons

I EEE C37. 20. 1 ( 2015) St andar d f or Met al - Encl osed Low- Vol t age Power Ci r cui t - Br eaker Switchgear

I EEE C37. 46 ( 2010) St andar d f or Hi gh Vol t age Expul s i on and Cur r ent - Li mi t i ng Type Power Cl ass

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Fuses and Fuse Di sconnect i ng Swi t ches

I EEE C37. 90 ( 2005; R 2011) St andar d f or Rel ays and Rel ay Syst ems Associ at ed Wi t h El ect r i c Power Appar at us

I EEE C57. 13 ( 2016) Requi r ement s f or I nst r ument Transformers

NATI ONAL ELECTRI CAL MANUFACTURERS ASSOCI ATI ON ( NEMA)

NEMA C37. 50 ( 2012) Amer i can Nat i onal St andar d f or Swi t chgear - - Low- Vol t age AC Power Ci r cui t Br eaker s Used i n Encl osur es - Test Procedures

NEMA FU 1 ( 2012) Low Vol t age Car t r i dge Fuses

NEMA I CS 1 ( 2000; R 2015) St andar d f or I ndust r i al Cont r ol and Syst ems: Gener al Requi r ement s

NEMA I CS 2 ( 2000; R 2005; Er r at a 2008) I ndust r i al Cont r ol and Syst ems Cont r ol l er s, Cont act or s, and Over l oad Rel ays Rat ed 600 V

NEMA I CS 3 ( 2005; R 2010) Medi um- Vol t age Cont r ol l er s Rat ed 2001 t o 7200 V AC

NEMA I CS 6 ( 1993; R 2016) I ndust r i al Cont r ol and Syst ems: Encl osur es

NEMA SG 4 ( 2009; R 2013) AC Hi gh- Vol t age Ci r cui t Breakers

NEMA SG 6 ( 2000) St andar d f or Power Swi t chi ng Equipment

NEMA/ ANSI C12. 11 ( 2007) I nst r ument Tr ansf or mer s f or Revenue Met er i ng, 10 kV BI L t hr ough 350 kV BI L ( 0. 6 kV NSV t hr ough 69 kV NSV)

NATI ONAL FI RE PROTECTI ON ASSOCI ATI ON ( NFPA)

NFPA 70 ( 2017; ERTA 1- 2 2017; TI A 17- 1; TI A 17- 2;

TI A 17- 3; TI A 17- 4; TI A 17- 5; TI A 17- 6;

TI A 17- 7; TI A 17- 8; TI A 17- 9; TI A 17- 10;

TI A 17- 11; TI A 17- 12; TI A 17- 13; TI A

17- 14) Nat i onal El ect r i cal Code

U. S. DEPARTMENT OF DEFENSE ( DOD)

UFC 3- 310- 04 ( 2013; wi t h Change 1) Sei smi c Desi gn f or Buildings

UNDERWRI TERS LABORATORI ES ( UL)

UL 1203 ( 2013; Repr i nt Feb 2018) UL St andar d f or Saf et y Expl osi on- Pr oof and Dust - I gni t i on- Pr oof El ect r i cal Equi pment

SECTI ON 26 28 01. 00 10 Page 6 f or Use i n Hazar dous ( Cl assi f i ed) Locat i ons

UL 198M ( 2003; Repr i nt Feb 2013) St andar d f or Mi ne- Dut y Fuses

UL 486E ( 2015; Repr i nt Nov 2017) UL St andar d f or Saf et y Equi pment Wi r i ng Ter mi nal s f or Use wi t h Al umi num and/ or Copper Conduct or s

UL 489 ( 2016) UL St andar d f or Saf et y Mol ded- Case Ci r cui t Br eaker s, Mol ded- Case Swi t ches and Ci r cui t - Br eaker Encl osur es

UL 508 ( 1999; Repr i nt Oct 2013) I ndust r i al Cont r ol Equi pment

UL 845 ( 2005; Repr i nt Jul 2011) Mot or Cont r ol Centers

1. 2 SYSTEM DESCRI PTI ON

NOTE: Pr ovi de br i ef , gener al descr i pt i on of t he el ect r i cal power syst em pr oj ect .

Coor di nat e wi t h Sect i on 26 11 14. 00 10 MAI N ELECTRI C SUPPLY STATI ON AND SUBSTATI ON; Sect i on 33 71 01 OVERHEAD TRANSMI SSI ON AND DI STRI BUTI ON; Sect i on

33 71 02 UNDERGROUND ELECTRI CAL DI STRI BUTI ON;

Sect i on 26 20 00 I NTERI OR DI STRI BUTI ON SYSTEM.

The power syst em cover ed by t hi s speci f i cat i on consi st s of : [ _____] .

1. 3 SUBMITTALS

NOTE: Revi ew submi t t al descr i pt i on ( SD) def i ni t i ons i n Sect i on 01 33 00 SUBMI TTAL PROCEDURES and edi t t he f ol l owi ng l i s t t o r ef l ect onl y t he submi t t al s r equi r ed f or t he pr oj ect .

The Gui de Speci f i cat i on t echni cal edi t or s have desi gnat ed t hose i t ems t hat r equi r e Gover nment appr oval , due t o t hei r compl exi t y or cr i t i cal i t y , wi t h a " G. " Gener al l y, ot her submi t t al i t ems can be r evi ewed by t he Cont r act or ' s Qual i t y Cont r ol Syst em. Onl y add a “ G” t o an i t em, i f t he submi t t al i s suf f i c i ent l y i mpor t ant or compl ex i n cont ext of t he pr oj ect .

For submi t t al s r equi r i ng Gover nment appr oval on Ar my pr oj ect s, a code of up t o t hr ee char act er s wi t hi n t he submi t t al t ags may be used f ol l owi ng t he " G" desi gnat i on t o i ndi cat e t he appr ovi ng aut hor i t y.

Codes f or Ar my pr oj ect s usi ng t he Resi dent Management Syst em ( RMS) ar e: " AE" f or Ar chi t ect - Engi neer ; " DO" f or Di st r i c t Of f i ce ( Engi neer i ng Di v i s i on or ot her or gani zat i on i n t he

SECTI ON 26 28 01. 00 10 Page 7

Di st r i c t Of f i ce) ; " AO" f or Ar ea Of f i ce; " RO" f or Resi dent Of f i ce; and " PO" f or Pr oj ect Of f i ce. Codes f ol l owi ng t he " G" t ypi cal l y ar e not used f or Navy, Ai r For ce, and NASA pr oj ect s.

Use t he " S" c l assi f i cat i on onl y i n SD- 11 Cl oseout Submi t t al s. The " S" f ol l owi ng a submi t t al i t em i ndi cat es t hat t he submi t t al i s r equi r ed f or t he Sust ai nabi l i t y eNot ebook t o f ul f i l l f eder al l y mandat ed sust ai nabl e r equi r ement s i n accor dance wi t h Sect i on 01 33 29 SUSTAI NABI LI TY REPORTI NG.

Choose t he f i r st br acket ed i t em f or Navy, Ai r For ce and NASA pr oj ect s, or choose t he second br acket ed i t em f or Ar my pr oj ect s.

Gover nment appr oval i s r equi r ed f or submi t t al s wi t h a " G" desi gnat i on;

submi t t al s not havi ng a " G" desi gnat i on ar e f or [ Cont r act or Qual i t y Cont r ol appr oval . ] [ i nf or mat i on onl y. When used, a desi gnat i on f ol l owi ng t he " G" desi gnat i on i dent i f i es t he of f i ce t hat wi l l r evi ew t he submi t t al f or t he Gover nment . ] Submi t t al s wi t h an " S" ar e f or i ncl usi on i n t he Sust ai nabi l i t y eNot ebook, i n conf or mance t o Sect i on 01 33 29 SUSTAI NABI LI TY REPORTI NG. Submi t t he f ol l owi ng i n accor dance wi t h Sect i on 01 33 00

SUBMI TTAL PROCEDURES:

SD- 03 Pr oduct Dat a

Faul t Cur r ent Anal ysi s Pr ot ect i ve Devi ce Coor di nat i on St udy Equipment Syst em Coor di nat or Pr ot ect i ve Rel ays Installation

SD- 06 Test Repor t s

Fi el d Test i ng

SD- 07 Cer t i f i cat es

Devi ces and Equi pment

1. 4 QUALI TY ASSURANCE

1. 4. 1 Syst em Coor di nat or

Syst em coor di nat i on, r ecommended r at i ngs and set t i ngs of pr ot ect i ve devi ces, and desi gn anal ysi s shal l be accompl i shed by a r egi st er ed pr of essi onal el ect r i cal power engi neer wi t h a mi ni mum of [ 3] [ _____] year s of cur r ent exper i ence i n t he coor di nat i on of el ect r i cal power syst ems.

Submi t ver i f i cat i on of exper i ence and l i cense number , of a r egi st er ed Pr of essi onal Engi neer as speci f i ed above. Exper i ence dat a shal l i ncl ude at l east f i ve r ef er ences f or wor k of a magni t ude compar abl e t o t hi s cont r act , i ncl udi ng poi nt s of cont act , addr esses and t el ephone number s.

1. 4. 2 Syst em I nst al l er

Cal i br at i on, t est i ng, adj ust ment , and pl aci ng i nt o ser vi ce of t he

SECTI ON 26 28 01. 00 10 Page 8 pr ot ect i ve devi ces shal l be accompl i shed by a manuf act ur er ' s pr oduct f i el d ser vi ce engi neer or i ndependent t est i ng company wi t h a mi ni mum of t wo year s of cur r ent pr oduct exper i ence i n pr ot ect i ve devi ces.

1. 5 DELI VERY, STORAGE, AND HANDLI NG

Devi ces and equi pment shal l be v i sual l y i nspect ed when r ecei ved and pr i or t o accept ance f r om conveyance. Pr ot ect st or ed i t ems f r om t he envi r onment i n accor dance wi t h t he manuf act ur er ' s publ i shed i nst r uct i ons. Damaged i t ems shal l be r epl aced.

1. 6 PROJECT/ SI TE CONDI TI ONS

NOTE: Unusual ser vi ce condi t i ons f or al t i t ude st ar t above 1005 m 3300 f eet f or most appar at us. Unusual ambi ent t emper at ur e r anges ar e mi nus 30 t o 40 degr ees C mi nus 22 t o 104 degr ees F, but ot her ambi ent s may appl y. Fr equency i s gener al l y 60 Hz, al t hough 50 Hz may al so be st andar d. Fungus cont r ol f or el ect r i cal devi ces i s r equi r ed onl y i n t r opi cal areas.

Pr ovi de sei smi c r equi r ement s, i f a Gover nment desi gner i s t he Engi neer of Recor d, and show on t he dr awi ngs. Del et e t he i nappr opr i at e br acket ed phr ase. Per t i nent por t i ons of UFC 3- 310- 04 and Sect i ons 13 48 00, 23 05 48. 19 and 26 05 48. 00 10, pr oper l y edi t ed, must be i ncl uded i n t he cont r act documents.

Submi t cer t i f i cat es at t est i ng t hat al l devi ces or equi pment meet t he r equi r ement s of t he cont r act document s. Devi ces and equi pment f ur ni shed under t hi s sect i on shal l be sui t abl e f or t he f ol l owi ng s i t e condi t i ons.

Sei smi c det ai l s shal l [ conf or m t o UFC 3- 310- 04 and Sect i ons 13 48 00

[ SEI SMI C] BRACI NG FOR MI SCELLANEOUS EQUI PMENT, 23 05 48. 19 [ SEI SMI C]

BRACI NG FOR HVAC AND 26 05 48. 00 10 SEI SMI C PROTECTI ON FOR ELECTRI CAL

EQUI PMENT] [ be as i ndi cat ed] .

Altitude [_____]

Ambi ent Temper at ur e [ _____] degr ees C F

Frequency [_____]

Fungus Cont r ol [_____]

Hazar dous Cl assi f i cat i on [_____]

Humi di t y Cont r ol [_____]

Ventilation [_____]

Sei smi c Par amet er s [_____]

SECTI ON 26 28 01. 00 10 Page 9

Other [_____]

1. 7 EXTRA MATERI ALS

The f ol l owi ng spar e f uses or spar e f use el ement s shal l be del i ver ed t o t he Cont r act i ng of f i cer when t he el ect r i cal syst em i s accept ed:

FUSE TYPE/ CLASS VOLTAGE CURRENT NO. OF SPARES

PART 2 PRODUCTS

NOTE: Sel ect t ypes t o sui t pr oj ect condi t i ons and del et e al l ot her s. Del et e al l par agr aphs not applicable.

2. 1 STANDARD PRODUCT

Pr ovi de pr ot ect i ve devi ces and equi pment whi ch ar e t he st andar d pr oduct of a manuf act ur er r egul ar l y engaged i n t he manuf act ur e of t he pr oduct and t hat essent i al l y dupl i cat e i t ems t hat have been i n sat i sf act or y ut i l i t y t ype use f or at l east t wo year s pr i or t o bi d openi ng. Submi t dat a consi st i ng of manuf act ur er ' s t i me- cur r ent char act er i st i c cur ves f or i ndi v i dual pr ot ect i ve devi ces, r ecommended set t i ngs of adj ust abl e pr ot ect i ve devi ces, and r ecommended r at i ngs of non- adj ust abl e pr ot ect i ve devi ces.

2. 2 NAMEPLATES

Pr ovi de namepl at es t o i dent i f y al l pr ot ect i ve devi ces and equi pment .

Namepl at e i nf or mat i on shal l be i n accor dance wi t h UL 489.

2. 3 CORROSI ON PROTECTI ON

Met al l i c mat er i al s shal l be pr ot ect ed agai nst cor r osi on. Fer r ous met al har dwar e shal l be z i nc or chr ome- pl at ed.

2. 4 MOTOR CONTROLS AND MOTOR CONTROL CENTERS

Mot or cont r ol s and mot or cont r ol cent er s shal l be i n accor dance wi t h NEMA I CS 1, NEMA I CS 2, NEMA I CS 3 and NEMA I CS 6, and UL 508and UL 845.

2. 4. 1 Mot or St ar t er s

Pr ovi de combi nat i on st ar t er s wi t h [ c i r cui t br eaker s] [ and] [ f usi bl e swi t ches] [ and] [ swi t ches equi pped wi t h hi gh- i nt er r upt i ng- capaci t y cur r ent - l i mi t i ng f uses] [ as i ndi cat ed] .

2. 4. 2 Reduced- Vol t age St ar t er s

NOTE: Reduced vol t age st ar t er s wi l l be r equi r ed when t he l ocked r ot or cur r ent of mot or s exceeds t he

SECTI ON 26 28 01. 00 10 Page 10 f ul l - l oad r at i ng of suppl y t r ansf or mer s or suppl y conductors.

Pr ovi de r educed- vol t age st ar t er s f or pol yphase mot or s [ _____] kW hp or l ar ger , of t he s i ngl e- st ep aut ot r ansf or mer , r eact or , or r esi st or t ype havi ng an adj ust abl e t i me i nt er val bet ween appl i cat i on of r educed and f ul l vol t ages t o t he mot or s. Wye- del t a r educed vol t age st ar t er or par t wi ndi ng i ncr ement st ar t er s havi ng an adj ust abl e t i me del ay bet ween appl i cat i on of vol t age t o f i r st and second wi ndi ng of mot or , may be used i n l i eu of t he r educed vol t age st ar t er s speci f i ed above f or st ar t i ng of mot or - gener at or set s, cent r i f ugal l y oper at ed equi pment or r eci pr ocat i ng compr essor s pr ovi ded wi t h aut omat i c unl oader s.

2. 4. 3 Ther mal - Over l oad Pr ot ect i on

Each mot or of 93 W 1/ 8 hp or l ar ger shal l be pr ovi ded wi t h t her mal - over l oad pr ot ect i on. Pol yphase mot or s shal l have over l oad pr ot ect i on i n each ungr ounded conduct or . The over l oad- pr ot ect i on devi ce shal l be pr ovi ded ei t her i nt egr al wi t h t he mot or or cont r ol l er , or shal l be mount ed i n a separ at e encl osur e. Unl ess ot her wi se speci f i ed, t he pr ot ect i ve devi ce shal l be of t he manual l y r eset t ype. Si ngl e or doubl e pol e t umbl er swi t ches speci f i cal l y desi gned f or al t er nat i ng- cur r ent oper at i on onl y may be used as manual cont r ol l er s f or s i ngl e- phase mot or s havi ng a cur r ent r at i ng not i n excess of 80 per cent of t he swi t ch r at i ng.

2. 4. 4 Low- Vol t age Mot or Over l oad Rel ays

NOTE: I n most cases, t her mal r el ays wi l l be speci f i ed. St andar d, s l ow, and qui ck- act i ng t r i p uni t s ar e avai l abl e. Magnet i c r el ays ar e used t o pr ot ect l ow- vol t age mot or s wi t h l ong st ar t i ng t i mes or unusual dut y cycl es.

2. 4. 4. 1 General

[ Ther mal ] [ and] [ magnet i c cur r ent ] over l oad r el ays shal l conf or m t o NEMA I CS 2 and UL 508. Over l oad pr ot ect i on shal l be pr ovi ded ei t her i nt egr al wi t h t he mot or or cont r ol l er , and shal l be r at ed i n accor dance wi t h t he r equi r ement s of NFPA 70. [ St andar d uni t s shal l be used f or mot or st ar t i ng t i mes up t o 7 second. ] [ Sl ow uni t s shal l be used f or mot or st ar t i ng t i mes f r om 8 t o 12 seconds. ] [ Qui ck t r i p uni t s shal l be used on her met i cal l y seal ed, submer si bl e pumps, and si mi l ar mot or s. ]

2. 4. 4. 2 Construction

Manual r eset t ype t her mal r el ays shal l be [ mel t i ng al l oy] [ bi met al l i c ] const r uct i on. Aut omat i c r eset t ype r el ays shal l be bi met al l i c const r uct i on. Magnet i c cur r ent r el ays shal l consi st of a cont act mechani sm and a dash pot mount ed on a common f r ame.

2. 4. 4. 3 Ratings

Vol t age r at i ngs shal l be not l ess t han t he appl i cabl e c i r cui t vol t age.

Tr i p cur r ent r at i ngs shal l be est abl i shed by sel ect i on of t he r epl aceabl e over l oad devi ce and shal l not be adj ust abl e. Wher e t he cont r ol l er i s r emot el y- l ocat ed or di f f i cul t t o r each, an aut omat i c r eset , non- compensat ed

SECTI ON 26 28 01. 00 10 Page 11 over l oad r el ay shal l be pr ovi ded. Manual r eset over l oad r el ays shal l be pr ovi ded ot her wi se, and at al l l ocat i ons wher e aut omat i c st ar t i ng i s pr ovi ded. Wher e t he mot or i s l ocat ed i n a const ant ambi ent t emper at ur e, and t he t her mal devi ce i s l ocat ed i n an ambi ent t emper at ur e t hat r egul ar l y var i es by mor e t han mi nus 10 degr ees C 14 degr ees F, an ambi ent t emper at ur e- compensat ed over l oad r el ay shal l be pr ovi ded.

2. 4. 5 Aut omat i c Cont r ol Devi ces

2. 4. 5. 1 Di r ect Cont r ol

Aut omat i c cont r ol devi ces ( such as t her most at s, f l oat or pr essur e swi t ches) whi ch cont r ol t he st ar t i ng and st oppi ng of mot or s di r ect l y shal l be desi gned f or t hat pur pose and have an adequat e k i l owat t hor sepower r at i ng.

2. 4. 5. 2 Pi l ot - Rel ay Cont r ol

Wher e t he aut omat i c- cont r ol devi ce does not have such a r at i ng, a magnet i c st ar t er shal l be used, wi t h t he aut omat i c- cont r ol devi ce act uat i ng t he pi l ot - cont r ol c i r cui t .

2. 4. 5. 3 Manual / Aut omat i c Sel ect i on

a. Wher e combi nat i on manual and aut omat i c cont r ol i s speci f i ed and t he aut omat i c- cont r ol devi ce act uat es t he pi l ot cont r ol c i r cui t of a magnet i c st ar t er , t he magnet i c st ar t er shal l be pr ovi ded wi t h a t hr ee- posi t i on sel ect or swi t ch mar ked MANUAL- OFF- AUTOMATI C.

b. Connect i ons t o t he sel ect or swi t ch shal l onl y al l ow t he nor mal aut omat i c r egul at or y cont r ol devi ces t o be bypassed when t he swi t ch i s i n t he Manual posi t i on; al l saf et y cont r ol devi ces, such as l ow- or hi gh- pr essur e cut out s, hi gh- t emper at ur e cut out s, and mot or - over l oad pr ot ect i ve devi ces, shal l be connect ed i n t he mot or - cont r ol c i r cui t i n bot h t he Manual and t he Aut omat i c posi t i ons of t he sel ect or swi t ch.

Cont r ol c i r cui t connect i ons t o any MANUAL- OFF- AUTOMATI C swi t ch or t o mor e t han one aut omat i c r egul at or y cont r ol devi ce shal l be made i n accor dance wi t h wi r i ng di agr am appr oved by t he cont r act i ng Of f i cer unl ess such di agr am i s i ncl uded on t he dr awi ngs. Al l cont r ol s shal l be 120 vol t s or l ess unl ess ot her wi se i ndi cat ed.

2. 4. 6 Mot or Cont r ol Cent er s

Cont r ol cent er s shal l be i ndoor t ype and shal l cont ai n combi nat i on st ar t er s and ot her equi pment as i ndi cat ed. Cont r ol cent er s shal l be NEMA I CS 2, Cl ass [ _____] , Type [ _____] . Each cont r ol cent er shal l be mount ed on f l oor s i l l s or mount i ng channel s. Each ci r cui t shal l have a sui t abl e met al or l ami nat ed pl ast i c namepl at e wi t h whi t e cut l et t er s. Mot or cont r ol cent er s shal l be pr ovi ded wi t h a f ul l - l engt h gr ound bus bar .

2. 5 LOW- VOLTAGE FUSES

2. 5. 1 General

Low- vol t age f uses shal l conf or m t o NEMA FU 1. Ti me del ay and nont i me del ay opt i ons shal l be as [ shown] [ speci f i ed] . Equi pment pr ovi ded under t hi s cont r act shal l be pr ovi ded wi t h a compl et e set of pr oper l y r at ed f uses when t he equi pment manuf act ur er ut i l i zes f uses i n t he manuf act ur e of t he equi pment , or i f cur r ent - l i mi t i ng f uses ar e r equi r ed t o be i nst al l ed t o l i mi t t he amper e- i nt er r upt i ng capaci t y of c i r cui t br eaker s or equi pment t o

SECTI ON 26 28 01. 00 10 Page 12 l ess t han t he maxi mum avai l abl e f aul t cur r ent at t he l ocat i on of t he equi pment t o be i nst al l ed. Fuses shal l have a vol t age r at i ng of not l ess t han t he phase- t o- phase ci r cui t vol t age, and shal l have t he t i me- cur r ent char act er i st i cs r equi r es f or ef f ect i ve power syst em coor di nat i on.

2. 5. 2 Car t r i dge Fuses; Noncur r ent - Li mi t i ng Type

Car t r i dge f uses of t he noncur r ent - l i mi t i ng t ype shal l be Cl ass H, nonr enewabl e, dual el ement , t i me l ag t ype and shal l have i nt er r upt i ng capaci t y of 10, 000 amper es. Cl ass H Fuses shal l conf or m t o UL 198M. At 500 per cent cur r ent , car t r i dge f uses shal l not bl ow i n l ess t han 10 seconds. Car t r i dge f uses shal l be used f or c i r cui t s r at ed i n excess of 30 amper es, 125 vol t s, except wher e cur r ent - l i mi t i ng f uses ar e i ndi cat ed.

2. 5. 3 Car t r i dge Fuses; Cur r ent - Li mi t i ng Type

NOTE: Cl ass RKI pr ovi des hi gh cur r ent l i mi t at i on wi t h bot h t i me- del ay and nont i me- del ay. RK5 pr ovi des moder at e cur r ent l i mi t at i on, t i me- del ay option.

Car t r i dge f uses, cur r ent - l i mi t i ng t ype, Cl ass [ G] [ J] [ K] [ L] [ RK1] [ RK5] [ RK9] [ T] [ CC] shal l have t est ed i nt er r upt i ng capaci t y not l ess t han [ 100, 000] [ 200, 000] amper es. Fuse hol der s shal l be t he t ype t hat wi l l r ej ect Cl ass H f uses.

a. Cl ass [ G] [ J ] [ L] [ CC] f uses shal l conf or m t o UL 198M.

b. Cl ass K f uses shal l conf or m t o UL 198M.

c. Cl ass R f uses shal l conf or m t o UL 198M.

d. Cl ass T f uses shal l conf or m t o UL 198M.

2. 5. 3. 1 Cont i nuous Cur r ent Rat i ngs ( 600 amper es and smal l er )

NOTE: Cl ass J or RK1 pr ovi de best pr ot ect i on f or ser vi ces and f eeder s r at ed 600 amper es or l ess.

Cl ass RK5 may be mor e cost ef f ect i ve wher e t he gr eat er cur r ent l i mi t at i on of RK1 or J i s not a requirement.

Ser vi ce ent r ance and f eeder c i r cui t f uses ( 600 amper es and smal l er ) shal l be Cl ass [ RK1] [ RK5] [ J] , cur r ent - l i mi t i ng, [ nont i me- del ay] [ t i me- del ay] wi t h 200, 000 amper es i nt er r upt i ng capaci t y.

2. 5. 3. 2 Cont i nuous Cur r ent Rat i ngs ( gr eat er t han 600 amper es)

Ser vi ce ent r ance and f eeder c i r cui t f uses ( gr eat er t han 600 amper es) shal l be Cl ass L, cur r ent - l i mi t i ng, [ nont i me- del ay] [ t i me- del ay] wi t h 200, 000 amper es i nt er r upt i ng capaci t y.

2. 5. 3. 3 Mot or and Tr ansf or mer Ci r cui t Fuses

Mot or , mot or cont r ol l er , t r ansf or mer , and i nduct i ve c i r cui t f uses shal l be

SECTI ON 26 28 01. 00 10 Page 13

Cl ass RK1 or RK5, cur r ent - l i mi t i ng, t i me- del ay wi t h 200, 000 amper es i nt er r upt i ng capaci t y.

2. 6 MEDI UM- VOLTAGE AND HI GH- VOLTAGE FUSES

2. 6. 1 General

Medi um- vol t age and hi gh- vol t age f uses shal l be di st r i but i on f use cut out s or power f uses, E- r at ed, C- r at ed, or R- r at ed cur r ent - l i mi t i ng f uses as shown.

2. 6. 2 Construction

Uni t s shal l be sui t abl e f or [ out door ] [ i ndoor ] use. Fuses shal l have i nt egr al bl own- f use i ndi cat or s. Al l r at i ngs shal l be c l ear l y v i s i bl e.

2. 6. 3 Ratings

NOTE: Sel ect f use r at i ngs t o sui t pr oj ect condi t i ons and del et e al l ot her s.

Vol t age r at i ngs shal l be not l ess t han t he appl i cabl e c i r cui t vol t age.

Cont i nuous- cur r ent r at i ngs shal l be as shown.

2. 6. 3. 1 Fuse Cut out s

Medi um- vol t age f uses and cut out s shal l be of t he [ l oadbr eak] [ nonl oadbr eak] [ encl osed] [ open] t ype const r uct i on[ r at ed [ 5. 2] [ 7. 8] [ 15] [ 27] [ 28] kV and of t he [ nor mal ] [ heavy] [ ext r a- heavy] [ ul t r a- heavy] - dut y t ype] [ r at i ngs and t ypes i ndi cat ed] . Open- l i nk cut out s ar e not accept abl e. Fuses shal l be ei t her i ndi cat i ng or dr opout t ype. Fuse r at i ngs shal l be as i ndi cat ed.

Fuses cut out s shal l be equi pped wi t h mount i ng br acket s sui t abl e f or t he i ndi cat ed i nst al l at i ons.

2. 6. 3. 2 Power Fuses

[ Expul s i on- t ype] [ Cur r ent - l i mi t i ng] power f uses shal l have r at i ngs i n accor dance wi t h I EEE C37. 46 and as f ol l ows:

Nomi nal vol t age [_____]

Rat ed maxi mum vol t age [_____]

Maxi mum symmet r i cal i nt er r upt i ng capaci t y [_____]

Rat ed cont i nuous cur r ent [_____]

BIL [_____]

2. 6. 3. 3 E- Rat ed, Cur r ent - Li mi t i ng Power Fuses

E- r at ed, cur r ent - l i mi t i ng, power f uses shal l conf or m t o I EEE C37. 46.

2. 6. 3. 4 C- Rat ed, Cur r ent - Li mi t i ng Fuses

C- r at ed, cur r ent - l i mi t i ng, power f uses shal l open i n 1000 seconds at

SECTI ON 26 28 01. 00 10 Page 14 cur r ent s bet ween 170 and 240 per cent of t he C r at i ng.

2. 6. 3. 5 R- Rat ed, Cur r ent - Li mi t i ng Fuses

R- r at ed, cur r ent - l i mi t i ng, f uses shal l be used wi t h medi um- vol t age mot or cont r ol l er s onl y. R- r at ed f uses shal l conf or m t o I EEE C37. 46.

2. 7 MOTOR SHORT- CI RCUI T PROTECTOR ( MSCP)

NOTE: MSCPs ar e component s of mot or cont r ol l er s r at her t han f uses. MSCPs, t her ef or e, have no amper e r at i ngs and ar e i dent i f i ed by l et t er desi gnat i ons, A- Y. Due t o a l i mi t ed number of MSCP manuf act ur er s, MSCPs shoul d be used onl y as a sol e- sour ce i t em.

2. 7. 1 General

Mot or shor t - c i r cui t pr ot ect or s shal l conf or m t o UL 508 and shal l be pr ovi ded as shown. Pr ot ect or s shal l be used onl y as par t of a combi nat i on mot or cont r ol l er whi ch pr ovi des coor di nat ed mot or br anch- ci r cui t over l oad and shor t - c i r cui t pr ot ect i on, and shal l be r at ed i n accor dance wi t h t he r equi r ement s of NFPA 70.

2. 7. 2 Construction

Mot or shor t - c i r cui t pr ot ect or bodi es shal l be const r uct ed of hi gh t emper at ur e, di mensi onal l y st abl e, l ong l i f e, nonhygr oscopi c mat er i al s.

Pr ot ect or s shal l f i t speci al MSCP mount i ng c l i ps and shal l not be i nt er changeabl e wi t h any commer ci al l y avai l abl e f uses. Pr ot ect or s shal l have 100 per cent one- way i nt er changeabi l i t y wi t hi n t he A- Y l et t er desi gnat i ons. Al l r at i ngs shal l be c l ear l y v i s i bl e.

2. 7. 3 Ratings

Vol t age r at i ngs shal l be not l ess t han t he appl i cabl e c i r cui t vol t age.

Let t er desi gnat i ons shal l be A t hr ough Y f or mot or cont r ol l er Si zes 0, 1, 2, 3, 4, and 5, wi t h 100, 000 amper es i nt er r upt i ng capaci t y r at i ng. Let t er desi gnat i ons shal l cor r espond t o cont r ol l er s i zes as f ol l ows:

CONTROLLER SI ZE MSCP DESI GNATI ON

NEMA 0 A-N

NEMA 1 A-P

NEMA 2 A-S

NEMA 3 A-U

NEMA 4 A-W

NEMA 5 A-Y

SECTI ON 26 28 01. 00 10 Page 15

2. 8 MOLDED- CASE CI RCUI T BREAKERS

2. 8. 1 General

Mol ded- case ci r cui t br eaker s shal l conf or m t o UL 489 and UL 489. Ci r cui t br eaker s may be i nst al l ed i n panel boar ds, swi t chboar ds, encl osur es, mot or cont r ol cent er s, or combi nat i on mot or cont r ol l er s. Ci r cui t br eaker s and ci r cui t br eaker encl osur es l ocat ed i n hazar dous ( c l assi f i ed) ar eas shal l conf or m t o UL 1203.

2. 8. 2 Construction

Mol ded- case ci r cui t br eaker s shal l be assembl ed as an i nt egr al uni t i n a suppor t i ng and encl osi ng housi ng of gl ass r ei nf or ced i nsul at i ng mat er i al pr ovi di ng hi gh di el ect r i c st r engt h. Ci r cui t br eaker s shal l be sui t abl e f or mount i ng and oper at i ng i n any posi t i on. Lugs shal l be l i s t ed f or [ copper conduct or s onl y] [ copper and al umi num conduct or s] i n accor dance wi t h UL 486E.

Si ngl e- pol e c i r cui t br eaker s shal l be f ul l modul e s i ze wi t h not mor e t han one pol e per modul e. Mul t i - pol e c i r cui t br eaker s shal l be of t he common- t r i p t ype havi ng a s i ngl e oper at i ng handl e such t hat an over l oad or shor t c i r cui t on any one pol e wi l l r esul t i n al l pol es openi ng s i mul t aneousl y. Si zes of 100 amper es or l ess may consi st of s i ngl e- pol e br eaker s per manent l y f act or y assembl ed i nt o a mul t i - pol e uni t havi ng an i nt er nal , mechani cal , nont amper abl e common- t r i p mechani sm and ext er nal handl e t i es. Al l c i r cui t br eaker s shal l have a qui ck- make, qui ck- br eak over cent er t oggl e- t ype mechani sm, and t he handl e mechani sm shal l be t r i p- f r ee t o pr event hol di ng t he cont act s c l osed agai nst a shor t - c i r cui t or sust ai ned over l oad. Al l c i r cui t br eaker handl es shal l assume a posi t i on bet ween " ON" and " OFF" when t r i pped aut omat i cal l y . Al l r at i ngs shal l be c l ear l y v i s i bl e.

2. 8. 3 Ratings

Vol t age r at i ngs shal l be not l ess t han t he appl i cabl e c i r cui t vol t age. The i nt er r upt i ng r at i ng of t he c i r cui t br eaker s shal l be at l east equal t o t he avai l abl e shor t - c i r cui t cur r ent at t he l i ne t er mi nal s of t he c i r cui t br eaker and cor r espond t o t he UL l i s t ed i nt egr at ed shor t - c i r cui t cur r ent r at i ng speci f i ed f or t he panel boar ds and swi t chboar ds. Mol ded- case ci r cui t br eaker s shal l have nomi nal vol t age r at i ngs, maxi mum cont i nuous- cur r ent r at i ngs, and maxi mum shor t - c i r cui t i nt er r upt i ng r at i ngs i n accor dance wi t h UL 489. Rat i ngs shal l be coor di nat ed wi t h syst em X/ R r at i o.

2. 8. 4 Cascade Syst em Rat i ngs

Ci r cui t br eaker s used i n ser i es combi nat i ons shal l be i n accor dance wi t h UL 489. Equi pment , such as swi t chboar ds and panel boar ds, whi ch house ser i es- connect ed c i r cui t br eaker s shal l be c l ear l y mar ked accor di ngl y.

Ser i es combi nat i ons shal l be l i s t ed i n t he UL Recogni zed Component Di r ect or y under " Ci r cui t Br eaker s- Ser i es Connect ed. "

2. 8. 5 Ther mal - Magnet i c Tr i p El ement s

Ther mal magnet i c c i r cui t br eaker s shal l be pr ovi ded as shown. Aut omat i c oper at i on shal l be obt ai ned by means of t her mal - magnet i c t r i ppi ng devi ces l ocat ed i n each pol e pr ovi di ng i nver se t i me del ay and i nst ant aneous c i r cui t pr ot ect i on. The i nst ant aneous magnet i c t r i p shal l be adj ust abl e and accessi bl e f r om t he f r ont of al l c i r cui t br eaker s on f r ame si zes above [ 150] [ _____] amper es.

SECTI ON 26 28 01. 00 10 Page 16

2. 8. 6 Sol i d- St at e Tr i p El ement s

Sol i d- st at e c i r cui t br eaker s shal l be pr ovi ded as shown. Al l el ect r oni cs shal l be sel f - cont ai ned and r equi r e no ext er nal r el ayi ng, power suppl y, or accessor i es. Pr i nt ed c i r cui t car ds shal l be t r eat ed t o r esi st moi st ur e absor pt i on, f ungus gr owt h, and si gnal l eakage. Al l el ect r oni cs shal l be housed i n an encl osur e whi ch pr ovi des pr ot ect i on agai nst ar cs, magnet i c i nt er f er ence, dust , and ot her cont ami nant s. Sol i d- st at e sensi ng shal l measur e t r ue RMS cur r ent wi t h er r or l ess t han one per cent on syst ems wi t h di st or t i ons t hr ough t he 13t h har moni c. Peak or aver age act uat i ng devi ces ar e not accept abl e. Cur r ent sensor s shal l be t or oi dal const r uct i on, encased i n a pl ast i c housi ng f i l l ed wi t h epoxy t o pr ot ect agai nst damage and moi st ur e and shal l be i nt egr al l y mount ed on t he br eaker . Wher e i ndi cat ed on t he dr awi ngs, c i r cui t br eaker f r ames shal l be r at ed f or 100 per cent cont i nuous dut y. Ci r cui t br eaker s shal l have t r i ppi ng f eat ur es as shown on t he dr awi ngs and as descr i bed bel ow:

a. Long- t i me cur r ent pi ck- up, adj ust abl e f r om 50 per cent t o 100 per cent of cont i nuous cur r ent r at i ng.

b. [ Fi xed] [ Adj ust abl e] l ong- t i me del ay.

c. Shor t - t i me cur r ent pi ck- up, adj ust abl e f r om 1. 5 t o 9 t i mes l ong- t i me cur r ent set t i ng.

d. [ Fi xed] [ Adj ust abl e] shor t - t i me del ay.

e. [ Shor t - t i me I squar e t i mes t swi t ch. ] f . I nst ant aneous cur r ent pi ck- up, adj ust abl e f r om 1. 5 t o 9 t i mes l ong- t i me cur r ent set t i ng.

g. Gr ound- f aul t pi ck- up, adj ust abl e f r om 20 per cent t o 60 per cent of sensor r at i ng, but i n no case gr eat er t han 1200 amper es. Sensi ng of gr ound- f aul t cur r ent at t he mai n bondi ng j umper or gr ound st r ap shal l not be per mi t t ed. [ Zone- sel ect i ve i nt er l ocki ng shal l be pr ovi ded as shown.]

h. [ Fi xed] [ Adj ust abl e] gr ound- f aul t del ay.

i . [ Gr ound- f aul t I squar e t i mes t swi t ch. ] j . [ Over l oad] [ and] [ Shor t - c i r cui t ] [ and] [ Gr ound- f aul t ] t r i p i ndi cat or s shal l be pr ovi ded.

2. 8. 7 Cur r ent - Li mi t i ng Ci r cui t Br eaker s

Cur r ent - l i mi t i ng c i r cui t br eaker s shal l be pr ovi ded as shown.

Cur r ent - l i mi t i ng c i r cui t br eaker s shal l l i mi t t he l et - t hr ough I squar e t i mes t t o a val ue l ess t han t he I squar e t i mes t of one- hal f cycl e of t he symmet r i cal shor t - c i r cui t cur r ent wavef or m. On f aul t cur r ent s bel ow t he t hr eshol d of l i mi t at i on, br eaker s shal l pr ovi de convent i onal over l oad and shor t - c i r cui t pr ot ect i on. I nt egr al l y- f used ci r cui t br eaker s shal l not be used.

2. 8. 8 SWD Ci r cui t Br eaker s

Ci r cui t br eaker s r at ed 15 amper es or 20 amper es and i nt ended t o swi t ch 277 vol t s or l ess f l uor escent l i ght i ng l oads shal l be mar ked " SWD. "

SECTI ON 26 28 01. 00 10 Page 17

2. 8. 9 HACR Ci r cui t Br eaker s

Ci r cui t br eaker s 60 amper es or bel ow, 240 vol t s, 1- pol e or 2- pol e, i nt ended t o pr ot ect mul t i - mot or and combi nat i on- l oad i nst al l at i ons i nvol ved i n heat i ng, ai r condi t i oni ng, and r ef r i ger at i ng equi pment shal l be mar ked " Li st ed HACR Type. "

2. 8. 10 Mot or Ci r cui t Pr ot ect or s ( MCP)

NOTE: A mot or c i r cui t pr ot ect or ( MCP) i s def i ned as an adj ust abl e, i nst ant aneous t r i p c i r cui t br eaker used i n conj unct i on wi t h a combi nat i on mot or cont r ol l er havi ng over l oad pr ot ect i on.

Mot or c i r cui t pr ot ect or s shal l conf or m t o UL 489 and UL 489 and shal l be pr ovi ded as shown. MCPs shal l consi st of an adj ust abl e i nst ant aneous t r i p c i r cui t br eaker i n conj unct i on wi t h a combi nat i on mot or cont r ol l er whi ch pr ovi des coor di nat ed mot or c i r cui t over l oad and shor t - c i r cui t pr ot ect i on.

Mot or Ci r cui t Pr ot ect or s shal l be r at ed i n accor dance wi t h NFPA 70.

2. 9 LOW- VOLTAGE POWER CI RCUI T BREAKERS

2. 9. 1 Construction

Low- vol t age power c i r cui t br eaker s shal l conf or m t o I EEE C37. 13 and I EEE C37. 16 and shal l be t hr ee- pol e, s i ngl e- t hr ow, st or ed ener gy, [ manual l y] [ el ect r i cal l y ] oper at ed, wi t h dr awout mount i ng. Sol i d- st at e t r i p el ement s whi ch r equi r e no ext er nal power connect i ons shal l be pr ovi ded.

Ci r cui t br eaker s shal l have an open/ cl ose cont act posi t i on i ndi cat or , char ged/ di schar ged st or ed ener gy i ndi cat or , pr i mar y di sconnect devi ces, and a mechani cal i nt er l ock t o pr event maki ng or br eaki ng cont act of t he pr i mar y di sconnect s when t he c i r cui t br eaker i s c l osed. Cont r ol vol t age shal l be [ 24 V dc] [ 48 V dc] [ 120 V ac] [ as i ndi cat ed. ] The c i r cui t br eaker encl osur e shal l be sui t abl e f or i t s i nt ended l ocat i on.

2. 9. 2 Ratings

Vol t age r at i ngs shal l be not l ess t han t he appl i cabl e c i r cui t vol t age.

Ci r cui t br eaker s shal l be r at ed f or 100 per cent cont i nuous dut y and shal l have t r i p cur r ent r at i ngs and f r ame si zes as shown. Nomi nal vol t age r at i ngs, maxi mum cont i nuous- cur r ent r at i ngs, and maxi mum shor t - c i r cui t i nt er r upt i ng r at i ngs shal l be i n accor dance wi t h I EEE C37. 16. Tr i ppi ng f eat ur es shal l be as f ol l ows:

a. Long- t i me cur r ent pi ck- up, adj ust abl e f r om 50 per cent t o 100 per cent of sensor cur r ent r at i ng.

b. Adj ust abl e l ong- t i me del ay.

c. Shor t - t i me cur r ent pi ck- up, adj ust abl e f r om 1. 5 t o 9 t i mes l ong- t i me cur r ent set t i ng.

d. Adj ust abl e shor t - t i me del ay.

[ e. Shor t - t i me I squar e t i mes t swi t ch. ]

SECTI ON 26 28 01. 00 10 Page 18 f . I nst ant aneous cur r ent pi ck- up, adj ust abl e f r om 1. 5 t o 9 t i mes l ong- t i me cur r ent set t i ng.

g. Gr ound- f aul t pi ck- up, adj ust abl e f r om 20 per cent t o 60 per cent of sensor r at i ng, but i n no case gr eat er t han 1200 amper es. Sensi ng of gr ound- f aul t cur r ent at t he mai n bondi ng j umper or gr ound st r ap shal l not be per mi t t ed. [ Zone- sel ect i ve i nt er l ocki ng shal l be pr ovi ded as shown.]

h. [ Fi xed] [ Adj ust abl e] gr ound- f aul t del ay.

i . [ Gr ound- f aul t I squar e t i mes t swi t ch. ] j . [ Over l oad] [ and] [ Shor t - c i r cui t ] [ and] [ Gr ound- f aul t ] t r i p i ndi cat or s shal l be pr ovi ded.

2. 10 MEDI UM- VOLTAGE CI RCUI T BREAKERS/ I NTERRUPTERS

2. 10. 1 Met al - Encl osed Type

Ci r cui t br eaker s shal l be of t he dr awout t ype, i n accor dance wi t h

I EEE C37. 20. 1.

2. 10. 2 Met al - Cl ad Type

Ci r cui t br eaker s shal l compl y wi t h I EEE C37. 04 and shal l consi st of i t ems l i s t ed f or such uni t s i n NEMA SG 6.

2. 10. 3 SF6 I nt er r upt er s

SF6 i nt er r upt er s shal l be of t he puf f er t ype wher e t he movement of t he cont act pl unger wi l l i ni t i at e t he puf f of SF6 gas acr oss t he cont act t o ext i ngui sh t he ar c at zer o gauge t ank pr essur e ( at mospher i c pr essur e) . The puf f of SF6 must be suf f i c i ent t o c l ear an ar c f or [ 15 kV] [ _____] or l ower c l ass equi pment and r emai n oper at i onal wi t hout damage or r equi r i ng mai nt enance or r epai r except f or gas l eaks. Br eaker s shal l be pr ovi ded wi t h a l oss- of - pr essur e al ar m r emot e as shown on t he dr awi ngs. Bef or e t he pr essur e i n t he cont ai ner dr ops bel ow t he poi nt wher e t he br eaker or swi t ch cannot open saf el y wi t hout damage, t he br eaker shal l act i vat e t he l oss- of - pr essur e al ar m, open aut omat i cal l y , and r emai n i n t he l ocked open posi t i on unt i l r epai r ed. I f l ocat ed i nsi de a st r uct ur e, br eaker s shal l be l ocat ed i n a c l osed r oom wi t h access onl y f r om out si de, and pr ovi ded wi t h di r ect out door vent i l at i on and a sensor uni t whi ch act i vat es a vent f an and an al ar m when a SF6 l eak had occur r ed. The al ar m wi l l aut omat i cal l y be s i l enced when t he oxygen i n t he r oom i s above 19. 5 per cent . The SF6 shal l meet t he r equi r ement s of ASTM D2472, except t hat t he maxi mum dew poi nt shal l be mi nus 60 degr ees C 140 degr ees F ( cor r espondi ng t o 11 ppm wat er by vol ume) , wi t h onl y 11 ppm wat er by vol ume, and t he mi ni mum pur i t y shal l be

99. 9 per cent by wei ght . Ci r cui t br eaker s shal l have pr ovi s i ons f or mai nt enance sl ow cl osi ng of cont act s and have a r eadi l y accessi bl e cont act wear i ndi cat or . Tr i ppi ng t i me shal l not exceed f i ve cycl es.

2. 10. 4 Vacuum I nt er r upt er s

Vacuum i nt er r upt er s shal l be her met i cal l y- seal ed i n a hi gh vacuum t o pr ot ect cont act f r om moi st ur e and cont ami nat i on. Ci r cui t br eaker s shal l have pr ovi s i ons f or s l ow cl osi ng of cont act s and have a r eadi l y cont act wear i ndi cat or . Tr i ppi ng t i me shal l not exceed f i ve cycl es.

SECTI ON 26 28 01. 00 10 Page 19

2. 10. 5 Ratings

NOTE: I EEE C37. 06, Tabl e 2 l i s t s pr ef er r ed r at i ngs f or i ndoor oi l l ess c i r cui t br eaker s. A shor t - c i r cui t st udy i s r equi r ed t o speci f y r at i ngs.

Mai n buses shal l be t hr ee- phase [ t hr ee- wi r e] [ f our - wi r e] wi t h a cont i nuous cur r ent r at i ng of [ _____] amper es r ms. [ The neut r al bus shal l be r at ed f or [ _____] amper es, cont i nuous. ] Swi t chgear r at i ngs at 60 Hz shal l be i n accor dance wi t h I EEE C37. 06 and as f ol l ows:

Maxi mum vol t age [_____]

Nomi nal vol t age cl ass [_____]

BIL [_____]

Maxi mum symmet r i cal i nt er r upt i ng capaci t y [_____]

3- second shor t - t i me- cur r ent car r yi ng capacity

Rat ed cont i nuous cur r ent [ as i ndi cat ed] [ _____]

2. 11 OI L CI RCUI T BREAKERS FOR SUBSTATI ONS

NOTE: I EEE C37. 06 l i s t s st andar d r at i ngs. A shor t - c i r cui t st udy i s r equi r ed t o speci f y r at i ngs.

Oi l c i r cui t br eaker s shal l compl y wi t h I EEE C37. 04 and NEMA SG 4and shal l be of t he out door t hr ee- pol e t ype, wi t h s i ngl e or mul t i pl e t anks and f r ame- mount ed or f l oor - mount ed on a common base i n accor dance wi t h t he manuf act ur er ' s st andar d desi gn. Cont r ol vol t age shal l be [ 48] [ 125] vol t s

dc. Rat i ngs shal l be as f ol l ows:

Nomi nal vol t age [_____]

Rat ed maxi mum vol t age [_____]

Maxi mum symmet r i cal i nt er r upt i ng capaci t y [_____]

Maxi mum asymmet r i cal i nt er r upt i ng capaci t y [_____]

3- second shor t t i me cur r ent car r yi ng capaci t y [_____]

Cl ose and l at ch capaci t y [_____]

Rat ed cont i nuous cur r ent [_____]

SECTI ON 26 28 01. 00 10 Page 20

Maxi mum i nt er r upt i ng t i me [_____]

Per mi ssi bl e t r i ppi ng del ay [_____]

Recl osi ng t i me ( adj ust ment r ange) [_____]

Dut y cycl e at r at ed condi t i ons [_____]

Basi c I nsul at i on Level ( BI L) [_____]

2. 11. 1 I ncomi ng Li ne Ci r cui t Br eaker s f or Subst at i ons

NOTE: Del et e i t ems " e" and " f " i f not r equi r ed.

I ncomi ng l i ne c i r cui t br eaker s shal l be coor di nat ed wi t h t he r equi r ement s of t he ser vi ng ut i l i t y , and of t he pr ot ect ed t r ansf or mer , and shal l i ncl ude t he f ol l owi ng cont r ol and moni t or i ng syst em i t ems t hat shal l be mount ed i n t he i nst r ument and r el ay cabi net .

a. An ammet er and an ammet er swi t ch.

b. A c i r cui t br eaker cont r ol swi t ch f or l ocal and r emot e cont r ol oper at i on.

c. Thr ee over cur r ent r el ays, devi ces 50/ 51.

d. One r esi dual l y- connect ed gr ound- over cur r ent r el ay, devi ce 50/ 51N.

e. Thr ee di r ect i onal over cur r ent r el ays, devi ce 67.

f . One gr ound- di r ect i onal - over cur r ent r el ay, devi ce 67N.

g. Thr ee t r ansf or mer di f f er ent i al r el ays, devi ce 87T and an auxi l i ar y l ockout r el ay, devi ce 86T l ocat ed i n t he [ associ at ed met al - c l ad swi t chgear ] [ i nst r ument and r el ay cabi net ] .

h. [ Si ngl e] [ Thr ee] phase secondar y pot ent i al t est bl ocks wi t h associ at ed t est pl ug, quant i t y as shown.

i . [ Si ngl e] [ Thr ee] phase secondar y cur r ent t est bl ocks wi t h associ at ed t est pl ug f or [ each cur r ent t r ansf or mer c i r cui t ] [ each t hr ee- phase set of cur r ent t r ansf or mer s] , as i ndi cat ed.

2. 11. 2 Li ne Ti e Ci r cui t Br eaker s f or Subst at i ons

NOTE: Del et e ei t her 86B or 87B r el ays i f not required.

The l i ne t i e c i r cui t br eaker shal l be r at ed [ as shown] [ t he same as t he i ncomi ng l i ne uni t s] , and shal l be el ect r i cal l y and mechani cal l y i nt er l ocked wi t h ot her hi gh- vol t age i t ems of equi pment as shown. The l i ne t i e c i r cui t br eaker shal l be equi pped wi t h cont r ol and moni t or i ng syst em i t ems t he same as descr i bed f or t he i ncomi ng l i ne c i r cui t br eaker . The i nst r ument and r el ay cabi net shal l house t he same equi pment l i s t ed f or t he

SECTI ON 26 28 01. 00 10 Page 21 i ncomi ng l i ne c i r cui t br eaker cabi net except [ _____] . The cabi net shal l al so house t hr ee bus di f f er ent i al r el ays, devi ce 87B, and an auxi l i ar y l ockout r el ay, devi ce 86B.

2. 12 SUBSTATI ON AND SWI TCHGEAR PROTECTI VE RELAYS

NOTE: Ranges sel ect ed wi l l be based on t he coor di nat i on st udy. Ref er t o UFC 3- 550- 01 and UFC 3- 520- 01 f or gui dance r egar di ng pr ot ect i ve r el ays.

[ Sol i d- st at e] [ and] [ El ect r omechani cal ] [ and] [ Mi cr opr ocessor - based] pr ot ect i ve r el ays shal l be as shown and shal l be of a t ype speci f i cal l y desi gned f…