UFGS_26_24_16.00_40_Panelboards.pdf

USACE / NAVFAC / AFCEC / NASA UFGS- 26 24 16. 00 40 ( August 2016) Pr epar i ng Act i v i t y: NASA Super sedi ng UFGS- 26 24 16. 00 40 ( August 2013)

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 24 16. 00 40

PANELBOARDS

08/16

PART 1 GENERAL

1. 1 REFERENCES

1. 2 SUBMI TTALS

1. 3 QUALI TY CONTROL

1. 3. 1 Cer t i f i cat i on

1. 3. 2 Pr edi ct i ve Test i ng and I nspect i on Technol ogy Requi r ement s

PART 2 PRODUCTS

2. 1 COMPONENTS

2. 1. 1 Panel boar ds

2. 1. 2 Ci r cui t Br eaker s

2. 1. 3 Di r ect or y Car d and Hol der

2. 1. 4 Fi l t er ed Panel boar ds

2. 1. 4. 1 Gener al

2. 1. 4. 2 RF Shi el di ng

2. 1. 4. 3 Ci r cui t Br eaker Act uat or s

2. 1. 4. 4 Ter mi nal s

2. 1. 4. 5 At t enuat i on

2. 1. 4. 6 Cur r ent

2. 1. 4. 7 Vol t age

2. 1. 4. 8 Ci r cui t Br eaker s

2. 1. 4. 9 RF Fi l t er s

2. 1. 4. 10 Fi l t er Di schar ge Uni t

2. 1. 5 Pr ecaut i onar y Label

2. 2 TESTS, I NSPECTI ONS, AND VERI FI CATI ONS

PART 3 EXECUTI ON

3. 1 I NSTALLATI ON

3. 2 FI ELD QUALI TY CONTROL

3. 3 CLOSEOUT ACTI VI TI ES

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

SECTI ON 26 24 16. 00 40 Page 1

USACE / NAVFAC / AFCEC / NASA UFGS- 26 24 16. 00 40 ( August 2016) Pr epar i ng Act i v i t y: NASA Super sedi ng UFGS- 26 24 16. 00 40 ( August 2013)

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 24 16. 00 40

PANELBOARDS

08/16

NOTE: Thi s gui de speci f i cat i on cover s t he r equi r ement s f or power - di st r i but i on panel boar ds and l i ght i ng and appl i ance br anch- ci r cui t panel boar ds.

I ndi cat e on dr awi ngs t he amper e r at i ng of panel boar ds, t he number of bus bar s, and t he vol t age char act er i st i cs of t he syst em t o whi ch t hey ar e connect ed. I ndi cat e f r ame si ze, t r i p r at i ng, number of pol es, and cl ass of mol ded- case br anch- ci r cui t br eaker s. Show i nt er r upt i ng r at i ng f or power di st r i but i on panel boar ds and al so f or l i ght i ng and appl i ance br anch- ci r cui t panel boar ds i f t he l at t er have an i nt er r upt i ng r at i ng of mor e t han 10, 000 amper es r ms symmet r i cal .

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

NOTE: I f Sect i on 26 00 00. 00 20 BASI C ELECTRI CAL MATERI ALS AND METHODS i s not i ncl uded i n t he pr oj ect speci f i cat i on, appl i cabl e r equi r ement s t her ef r om shoul d be i nser t ed and t he f ol l owi ng par agr aph deleted.

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Sect i on 26 00 00. 00 20 BASI C ELECTRI CAL MATERI ALS AND METHODS appl i es t o wor k speci f i ed i n t hi s sect i on.

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.

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.

ELECTRONI C COMPONENTS I NDUSTRY ASSOCI ATI ON ( ECI A)

ECI A RS- 416 ( 1974; R 1981) Fi l t er s f or Radi o Interference

ECI A/ I S 46 ( 1987) Test Pr ocedur e f or Resi st ance t o Sol der i ng ( Vapor Phase Techni que) f or Sur f ace Mount Devi ces

NATI ONAL AERONAUTI CS AND SPACE ADMI NI STRATI ON ( NASA)

RCBEA GUI DE ( 2004) NASA Rel i abi l i t y Cent er ed Bui l di ng and Equi pment Accept ance Gui de

NATI ONAL ELECTRI CAL MANUFACTURERS ASSOCI ATI ON ( NEMA)

NEMA 250 ( 2014) Encl osur es f or El ect r i cal Equi pment ( 1000 Vol t s Maxi mum)

NEMA PB 1 ( 2011) Panel boar ds

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

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

U. S. DEPARTMENT OF DEFENSE ( DOD)

MI L- HDBK 232 ( 1987; Rev A; Not i ce 1 1988; Not i ce 2 2000; Not i ce 3 2014) Red/ Bl ack Engi neer i ng

- I nst al l at i on Gui del i nes

U. S. GENERAL SERVI CES ADMI NI STRATI ON ( GSA)

FED-STD-595 ( Rev C; Not i ce 1) Col or s Used i n Gover nment Pr ocur ement

UNDERWRI TERS LABORATORI ES ( UL)

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 67 ( 2009; Repr i nt Nov 2017) UL St andar d f or Saf et y Panel boar ds

1. 2 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 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" Cl assi f i cat i on onl y i n SD- 11 Cl oseout Submi t t al s. An " 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.

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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 . ] [ f or 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- 02 Shop Dr awi ngs

Det ai l Dr awi ngs; G[ , [ ____] ]

SD- 03 Pr oduct Dat a

Panel boar ds; G[ , [ ____] ]

Di r ect or y Car d and Hol der ; G[ , [ ____] ]

Fi l t er ed Panel boar ds; G[ , [ ____] ]

SD- 06 Test Repor t s

Cont i nui t y Test s; G[ , [ ____] ]

I nsul at i on Test s; G[ , [ ____] ]

SD- 07 Cer t i f i cat es

Cer t i f i cat i on; G[ , [ ____] ]

SD- 08 Manuf act ur er ' s I nst r uct i ons

Manuf act ur er ' s I nst r uct i ons

1. 3 QUALI TY CONTROL

1. 3. 1 Certification

Ensur e t he manuf act ur er of t he assembl y i s t he manuf act ur er of t he maj or component s wi t hi n t he assembl y and has pr oduced si mi l ar el ect r i cal equi pment f or a mi ni mum per i od of f i ve year s.

Pr ovi de cer t i f i cat i on s i gned by r esponsi bl e of f i c i al s of a manuf act ur er of a pr oduct , syst em, or mat er i al at t est i ng t hat t he pr oduct , syst em or mat er i al meet speci f i ed r equi r ement s. [ Ensur e st at ement s ar e dat ed af t er t he awar d of t hi s cont r act , wi t h t he pr oj ect name, and a l i s t of t he speci f i c r equi r ement s whi ch i t i s i nt ended t o addr ess. ]

1. 3. 2 Pr edi ct i ve Test i ng and I nspect i on Technol ogy Requi r ement s

NOTE: The Pr edi ct i ve Test i ng and I nspect i on ( PT&I ) t est s pr escr i bed i n Sect i on 01 86 26. 07 40

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RELI ABI LI TY CENTERED ACCEPTANCE FOR ELECTRI CAL

SYSTEMS ar e MANDATORY f or al l NASA asset s and syst ems i dent i f i ed as Cr i t i cal , Conf i gur ed, or Mi ssi on Essent i al . I f t he syst em i s non- cr i t i cal , non- conf i gur ed, and not mi ssi on essent i al , use sound engi neer i ng di scr et i on t o assess t he val ue of addi ng t hese addi t i onal t est and accept ance r equi r ement s.

See Sect i on 01 86 26. 07 40 RELI ABI LI TY CENTERED ACCEPTANCE FOR ELECTRI CAL SYSTEMS f or addi t i onal i nf or mat i on r egar di ng cost f easi bi l i t y of PT&I .

Thi s sect i on cont ai ns syst ems and equi pment component s r egul at ed by NASA' s Rel i abi l i t y Cent er ed Bui l di ng and Equi pment Accept ance Pr ogr am. Thi s pr ogr am r equi r es t he use of Pr edi ct i ve Test i ng and I nspect i on ( PT&I ) t echnol ogi es i n conf or mance wi t h RCBEA GUI DE t o ensur e bui l di ng equi pment and syst ems i nst al l ed by t he Cont r act or have been i nst al l ed pr oper l y and cont ai n no i dent i f i abl e def ect s t hat shor t en t he desi gn l i f e of a syst em and i t s component s. Sat i sf act or y compl et i on of al l accept ance r equi r ement s i s r equi r ed t o obt ai n Gover nment appr oval and accept ance of t he Cont r act or ' s wor k.

Per f or m PT&I t est s and pr ovi de submi t t al s as speci f i ed i n Sect i on

01 86 26. 07 40 RELI ABI LI TY CENTERED ACCEPTANCE FOR ELECTRI CAL SYSTEMS.

PART 2 PRODUCTS

2. 1 COMPONENTS

2. 1. 1 Panelboards

Submi t det ai l dr awi ngs f or t he panel boar ds consi st i ng of f abr i cat i on and assembl y dr awi ngs f or al l par t s of t he wor k i n suf f i c i ent det ai l t o enabl e t he Gover nment t o check conf or mi t y wi t h t he r equi r ement s of t he cont r act document s. Ensur e dr awi ngs f or panel boar ds i ndi cat e det ai l s of bus l ayout , over al l physi cal f eat ur es, di mensi ons, r at i ngs, ser vi ce r equi r ement s, and wei ght s of equi pment .

Tot al l y encl ose power - di st r i but i on panel boar ds and l i ght i ng and appl i ance br anch- ci r cui t panel boar ds i n a st eel cabi net , dead- f r ont c i r cui t br eaker t ype wi t h copper buses, sur f ace- or f l ush- mount ed as i ndi cat ed. Ensur e panel boar ds conf or m t o NEMA PB 1 and UL 489. Pr ovi de br anch ci r cui t panel s wi t h buses f abr i cat ed f or bol t - on t ype c i r cui t br eaker s.

Pr ovi de an out er door or cover , hi nged on one si de, on sur f ace- mount ed panel boar ds t o pr ovi de gut t er space access. Pr ovi de a cent er door f or c i r cui t br eaker swi t ch access onl y.

Vol t age and cur r ent r at i ng, number of phases, and number of wi r es i s as i ndi cat ed on dr awi ngs. Pr ovi de f our - wi r e di st r i but i on panel boar ds and l i ght i ng and appl i ance br anch- ci r cui t panel boar ds wi t h an i sol at ed f ul l - capaci t y neut r al bus. Ensur e panel boar ds ar e r at ed f or [ 240- vol t ( maxi mum) , s i ngl e- phase] [ 120/ 208- vol t , t hr ee- phase] [ 277/ 480- vol t , t hr ee- phase] , 60- her t z cur r ent .

Pr ovi de t hr ee- phase, 4- wi r e and s i ngl e- phase, 3- wi r e di st r i but i on l i ght i ng and br anch ci r cui t panel boar ds wi t h an i sol at ed f ul l - capaci t y bus pr ovi di ng spaces f or s i ngl e- pol e c i r cui t br eaker swi t ches and spaces i ndi cat ed as spare.

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Pr ovi de panel boar ds wi t h a separ at e gr oundi ng bus bonded t o t he encl osur e.

Ensur e gr oundi ng bus i s a sol i d bus bar of r ect angul ar cr oss sect i on equi pped wi t h bi ndi ng scr ews f or t he connect i on of equi pment gr oundi ng conductors.

Ensur e each panel boar d, as a compl et e uni t , has a shor t - c i r cui t cur r ent r at i ng equal t o or gr eat er t han t he i nt egr at ed equi pment r at i ng shown on t he panel boar d schedul e.

Ensur e panel boar ds and mai n l ugs or mai n br eaker have cur r ent r at i ngs as shown on t he panel boar d schedul e.

Pr ovi de bus bar connect i ons t o t he br anch ci r cui t br eaker s t hat ar e t he " di st r i but ed phase" or " phase sequence" t ype. Si ngl e- phase, t hr ee- wi r e panel boar d busi ng i s such t hat when any t wo adj acent s i ngl e- pol e br eaker s ar e connect ed t o opposi t e phases, t wo- pol e br eaker s can be i nst al l ed i n any l ocat i on. Thr ee- phase, f our - wi r e busi ng i s such t hat when any t hr ee adj acent s i ngl e- pol e br eaker s ar e i ndi v i dual l y connect ed t o each of t he t hr ee di f f er ent phases, t wo- or t hr ee- pol e br eaker s can be i nst al l ed at any l ocat i on. Ensur e cur r ent - car r y i ng par t s of t he bus assembl y ar e pl at ed.

Mai ns r at i ngs ar e as shown on dr awi ngs.

For mechani cal l ugs f ur ni shed wi t h panel boar ds, use cast copper or copper al l oys of s i zes sui t abl e f or t he conduct or s i ndi cat ed.

[ Use boxes wi t h t he manuf act ur er ' s st andar d knockout s and ar e f abr i cat ed of gal vani zed code- gage sheet st eel . Fr ont s ar e of code- gage sheet st eel f ur ni shed wi t h hi nged door s wi t h adj ust abl e t r i m c l amps f or secur i ng t he f r ont s t o t he boxes.

][ Use panel boar d box wi t h [ gal vani zed] [ r ust - r esi st ant ] code- gage sheet st eel wi t hout knockout s. Ensur e ent i r e panel boar d f r ont i s hi nged on one si de wi t h a pi ano hi nge f or t he f ul l hei ght and has capt i ve scr ews opposi t e t he hi nged si de. Wher e panel boar ds ar e i nst al l ed f l ush wi t h t he wal l s, ensur e t hat t he hi nged f r ont can be opened wi t hout damage t o t he adj acent wal l sur f aces. Ensur e t hat t he col or of t he f i ni shed coat of t r i m and f r ont mat ches t he adj acent wal l s except when t he box i s i nst al l ed i n el ect r i cal c l oset s or equi pment r ooms, t he gr ay f i ni sh as speci f i ed i s accept abl e.

] Ensur e panel boar d encl osur es ar e NEMA 250, Type 1. Pr ovi de encl osur es wi t h hi nged f r ont s and cor r osi on- r esi st ant st eel pi n- t umbl er cyl i nder l ocks.

Ensur e l ocks ar e i dent i cal l y keyed and pr oper l y t agged. Pr ovi de t wo keys f or each encl osur e t o t he Cont r act i ng Of f i cer .

Fi ni sh panel boar ds wi t h [ baked] [ f ast dr y i ng] enamel . Fi ni sh col or i s No.

61 gr ay conf or mi ng t o FED-STD-595 .

2. 1. 2 Ci r cui t Br eaker s

NOTE: I ncl ude Sect i on 26 05 70. 00 40 HI GH VOLTAGE OVERCURRENT PROTECTI VE DEVI CES and Sect i on

26 05 71. 00 40 LOW VOLTAGE OVERCURRENT PROTECTI VE

DEVI CES i n t he pr oj ect speci f i cat i on or i ncl ude t he r equi r ement s her ei n.

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Pr ovi de mol ded- case br eaker s as speci f i ed i n Sect i on 26 05 70. 00 40 HI GH VOLTAGE OVERCURRENT PROTECTI VE DEVI CES and Sect i on 26 05 71. 00 40 LOW VOLTAGE OVERCORRECT PROTECTI VE DEVI CES. Pr ovi de br eaker s wi t h t he i ndi cat ed f r ame and t r i p r at i ngs.

I nt er r upt i ng r at i ng of c i r cui t br eaker s ar e as i ndi cat ed on dr awi ngs. I f r at i ngs ar e not shown, t he i nt er r upt i ng r at i ng f or c i r cui t br eaker s i n [ 120/ 208] [ _____] - vol t panel boar ds i s not l ess t han [ 10, 000] [ _____] amper es r ms symmet r i cal , and t hat f or br eaker s i n [ 277/ 480] [ _____] - vol t panel boar ds i s not l ess t han [ 25, 000] [ _____] amper es r ms symmet r i cal .

Use bol t - on t ype br eaker s. Do not use pl ug- i n t ype br eaker s.

Pr ovi de shunt t r i ps wher e i ndi cat ed.

I n br anch ci r cui t panel boar ds, ensur e br anch ci r cui t br eaker s f eedi ng conveni ence out l et s have sensi t i ve i nst ant aneous t r i p set t i ngs of not mor e t han [ 10] [ _____] t i mes t he t r i p r at i ng of t he br eaker t o pr event r epeat ed ar ci ng shor t s r esul t i ng f r om f r ayed appl i ance cor ds. Pr ovi de UL l i s t ed s i ngl e- pol e 15- and 20- amper e c i r cui t br eaker s as " Swi t chi ng Br eaker s" at [ 120 vol t s ac] [ 277 vol t s ac] . Pr ovi de UL Cl ass A ( 5- mi l l i amper e sensi t i v i t y) gr ound f aul t c i r cui t pr ot ect i on on 120- vol t ac br anch ci r cui t as i ndi cat ed. Tr i ppi ng of a br anch ci r cui t br eaker cont ai ni ng gr ound f aul t c i r cui t i nt er r upt i on i s not t o di st ur b t he f eeder c i r cui t t o t he panel boar d.

Ensur e connect i ons t o t he bus ar e bol t - on t ype.

When mul t i pl e wi r es per phase ar e speci f i ed, f ur ni sh t he c i r cui t br eaker s wi t h connect or s made t o accommodat e mul t i pl e wi r es.

Ensur e c i r cui t br eaker spaces cal l ed out on t he dr awi ngs ar e compl et e wi t h mount i ng har dwar e t o per mi t r eady i nst al l at i on of t he c i r cui t br eaker s.

2. 1. 3 Di r ect or y Car d and Hol der

Pr ovi de a di r ect or y car d on t he i nsi de of hi nged f r ont s and door s [ under gl ass] [ 0. 76 mi l l i met er 0. 030- i nch t hi ck mi ni mum pl ast i c] i n a met al f r ame, wi t h spaces f or c i r cui t number s, out l et s cont r ol l ed, and r oom number s.

Wher e hi nged f r ont s or door s ar e not r equi r ed, pr ovi de t he di r ect or y car d [ under gl ass] [ 0. 76 mi l l i met er 0. 030- i nch t hi ck mi ni mum pl ast i c] i n a met al f r ame mount ed on t he l ef t - hand si de of t he f r ont t r i m. Ensur e t he di r ect or y car d i dent i f i es each br anch ci r cui t wi t h i t s r espect i ve and number ed ci r cui t br eaker .

[ 2. 1. 4 Fi l t er ed Panel boar ds

2. 1. 4. 1 General

[ Desi gn panel boar ds f or t he di st r i but i on, cont r ol , and pr ot ect i on of el ect r i cal c i r cui t s, pr ovi di ng f i l t er i ng and shi el di ng per f or mance and, when speci f i ed, conf or mi ng t o MI L- HDBK 232.

] Pr ovi de panel boar d cabi net wi t h [ 2. 7] [ _____] mi l l i met er [ 12] [ _____] - gage st eel mi ni mum, cor r osi on- r esi st ant f i ni sh and f our ext er nal mount i ng br acket s wel ded t o t he case. Pr ovi de code- gage st eel f r ont door and t r i m, wi t h gr ay f i ni sh, equi pped wi t h di r ect or y, hol der , adj ust abl e t r i m cl amps, hi nges, sel f - l at chi ng cat ch, t umbl er l ock and key and bear s t he UL l abel .

Pr ovi de a r ed di agonal st r i p acr oss t he out s i de sur f ace of door and t r i m.

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2. 1. 4. 2 RF Shi el di ng

Ensur e c i r cui t br eaker and f i l t er compar t ment s ar e compl et el y r adi o- f r equency ( RF) shi el ded and i n compl i ance wi t h speci f i ed shi el di ng r equi r ement s wi t h f r ont door open. Ensur e case seams ar e cont i nuous i ner t gas wel ded. Fi t r emovabl e c i r cui t br eaker act uat or f acepl at e and t he f i l t er compar t ment cover wi t h cor r osi on- r esi st ant RF gasket i ng mat er i al .

I nst al l i n pl ace wi t h sui t abl e f ast ener s havi ng a maxi mum spaci ng of [ 75] [ _____] mi l l i met er [ 3] [ _____] i nches on cent er . Mount RF f i l t er uni t s t o t he i nt er nal shi el d wal l wi t h s i mi l ar RF gasket i ng t o ensur e RF shi el di ng integrity.

2. 1. 4. 3 Ci r cui t Br eaker Act uat or s

Desi gn c i r cui t br eaker oper at i ng mechani sms t o mai nt ai n RF shi el di ng ef f ect i veness wi t hout l i mi t t o t i me or number of oper at i ons.

2. 1. 4. 4 Terminals

Ensur e f i l t er t er mi nal s ar e hi gh- t emper at ur e al umi na cer ami c, cont i nuousl y br azed t o f i l t er case. Do not use sof t sol der . Pr ovi de cer ami c t er mi nal s t hat i ncor por at e a per manent l y at t ached f l exi bl e l ead, wi t h a sui t abl e el ect r i c l ug. Make i ncomi ng ser v i ce connect i ons t o t he f i l t er l ead at a UL- appr oved, f l ame- r et ar dant st andof f i nsul at or , mount ed i n t he f i l t er compartment.

2. 1. 4. 5 Attenuation

Ensur e each f i l t er pr ovi des a mi ni mum i nser t i on l oss of [ 100] [ _____] dB over t he f r equency r ange of [ 14 k i l oher t z ( kHz) t o 10 gi gaher t z ( GHz) ] [ _____] . Ensur e each f i l t er pr ovi des a f ul l r at ed l oad i nser t i on l oss of [ 100] [ _____] dB i n t he f r equency r ange [ 14 kHz t o 20 megaher t z ( MHz) ] , t o [ 14] [ _____] kHz as measur ed by a Gover nment - appr oved l abor at or y.

2. 1. 4. 6 Current

Ensur e each f i l t er uni t i s capabl e of car r y i ng i t s f ul l r at ed cur r ent cont i nuousl y wi t hout heat r i se exceedi ng 50 [ _____] degr ees C 122 [ _____] degr ees F above ambi ent t emper at ur e. Ensur e each f i l t er i s capabl e of wi t hst andi ng a [ 100] [ _____] - per cent over l oad f or [ 30] [ _____] seconds wi t hout damage.

2. 1. 4. 7 Voltage

Ensur e each f i l t er uni t i s capabl e of cont i nuous oper at i on at i t s f ul l r at ed vol t age and wi t hst andi ng an i ni t i al vol t age t est of t wi ce i t s r at ed vol t age wi t hout damage.

2. 1. 4. 8 Ci r cui t Br eaker s

Ensur e c i r cui t br eaker s ar e r at ed a mi ni mum 10, 000 amper es asymmet r i cal ac i nt er r upt i ng capaci t y, 5, 000 amper es dc, and ar e i n accor dance wi t h UL 489.

2. 1. 4. 9 RF Fi l t er s

Desi gn RF f i l t er uni t s t o suppr ess and r educe t he ampl i t ude of undesi r ed RF ener gy conduct ed by power ser vi ce l i nes. [ Desi gn RF f i l t er uni t s i n compl i ance wi t h t he appl i cabl e r equi r ement s of ECI A RS- 416.]

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Pr ovi de f i l t er cases made of st eel , 1. 6 [ _____] mi l l i met er [ 16] [ _____] - gage mi ni mum, cor r osi on- r esi st ant f i ni sh wi t h a bl ue l acquer over z i nc chr omat e pr i mer . Use conduct i ve gr oundi ng sur f aces t hat ar e ei t her pl at ed or made of cor r osi on- r esi st ant st eel . Use cont i nuous i ner t gas wel ds f or her met i c seams; do not use sof t sol der . Fi r ml y mount i nt er nal component s t o wi t hst and appl i cabl e shock and vi br at i on t est r equi r ement s wi t hout damage.

Ensur e i nt er nal component s ar e f ul l y i mpr egnat ed and i mmer sed i n t he f l ui d t o obt ai n t he f ul l benef i t of cool i ng by convect i on f l ow t hr ough t he l i qui d medi um t o f i l t er case. Compl et el y f i l l f i l t er case wi t h t he f l ui d. Ensur e f l ui d conf or ms t o UL nonf l ammabl e c l assi f i cat i on.

2. 1. 4. 10 Fi l t er Di schar ge Uni t

Pr ovi de a f i l t er di schar ge uni t f or t hr ee- f i l t er ed c i r cui t s on t he panel boar d. I nst al l i n accor dance wi t h NFPA 70. [ Ensur e uni t meet s appl i cabl e r equi r ement s of ECI A/ I S 46]

] 2. 1. 5 Pr ecaut i onar y Label

To ensur e per sons ar e awar e of i mmedi at e or pot ent i al hazar d i n t he appl i cat i on, i nst al l at i on, use, or mai nt enance of panel boar ds, conspi cuousl y mar k each panel boar d on t he t r i m or dead f r ont shi el d wi t h t he t ext ( or equi val ent ) DANGER symbol . I f t he panel i s suppl i ed wi t h a door , ensur e t he l abel i s v i s i bl e when t he door i s i n t he open posi t i on.

2. 2 TESTS, I NSPECTI ONS, AND VERI FI CATI ONS

Pr ovi de panel boar ds i n compl i ance wi t h UL 67.

PART 3 EXECUTI ON

3. 1 INSTALLATION

I nst al l panel boar ds i n accor dance wi t h t he manuf act ur er ' s i nst r uct i ons.

Ful l y al i gn and mount panel s so t hat t he hei ght of t he t op oper at i ng handl e does not exceed 1800 [ _____] mi l l i met er [ 72] [ _____] i nches above t he f i ni shed floor.

Ensur e di r ect or y- car d i nf or mat i on i s t ypewr i t t en i n capi t al l et t er s t o i ndi cat e out l et s cont r ol l ed and f i nal r oom number s ser ved by each c i r cui t and i s mount ed i n hol der s behi nd pr ot ect i ve cover i ng.

3. 2 FI ELD QUALI TY CONTROL

NOTE: I f t he speci f i ed syst em i s i dent i f i ed as cr i t i cal , conf i gur ed, or mi ssi on essent i al , use Sect i on 01 86 26. 07 40 RELI ABI LI TY CENTERED ACCEPTANCE FOR ELECTRI CAL SYSTEMS t o est abl i sh pr edi ct i ve and accept ance t est i ng cr i t er i a, above and beyond t hat l i s t ed bel ow.

Per f or m PT&I t est s and pr ovi de submi t t al s as speci f i ed i n Sect i on

01 86 26. 07 40 RELI ABI LI TY CENTERED ACCEPTANCE FOR ELECTRI CAL SYSTEMS.

Do not ener gi ze panel boar ds unt i l t he r ecor ded t est dat a has been submi t t ed t o and appr oved by t he Cont r act i ng Of f i cer .

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Demonst r at e each panel boar d encl osur e key oper at es t he encl osur e l ocks i n t he pr esence of t he Cont r act i ng Of f i cer .

Pr ovi de t est equi pment , l abor , and per sonnel as r equi r ed t o per f or m t he t est s as speci f i ed. Conduct cont i nui t y t est s usi ng a dc devi ce wi t h [ bel l ] [ buzzer ] [ _____] .

Conduct cont i nui t y and i nsul at i on t est s on t he panel boar ds af t er t he i nst al l at i on has been compl et ed and bef or e t he panel boar d i s ener gi zed.

Conduct i nsul at i on t est s on 480- vol t panel boar ds usi ng a 1, 000- vol t i nsul at i on- r esi st ance t est set . Recor d r eadi ngs ever y mi nut e unt i l t hr ee equal and consecut i ve r eadi ngs have been obt ai ned. Ensur e r esi st ance bet ween phase conduct or s and bet ween phase conduct or s and gr ound i s not l ess t han 50 megohms.

Conduct i nsul at i on t est s on panel boar ds r at ed 300 vol t s or l ess usi ng a 500- vol t mi ni mum i nsul at i on- r esi st ance t est set . Recor d r eadi ngs af t er 1 mi nut e and unt i l t he r eadi ng i s const ant f or 15 seconds. Ensur e r esi st ance bet ween phase conduct or s and bet ween phase conduct or s and gr ound i s not l ess t han 25 megohms.

Recor d and submi t t est dat a. I ncl ude t he l ocat i on and i dent i f i cat i on of panel boar ds and megohm r eadi ngs ver sus t i me.

3. 3 CLOSEOUT ACTI VI TI ES

Submi t manuf act ur er ' s i nst r uct i ons f or panel boar ds i ncl udi ng speci al pr ovi s i ons r equi r ed t o i nst al l equi pment component s and syst em packages.

Pr ovi de speci al not i ces det ai l s i mpedances, hazar ds and saf et y pr ecaut i ons.

- - End of Sect i on - -

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