7/29/2019 Busbar Size, Material and Distribution System
1/52
Busbars and
distributin
12
PowEr guidE 2009 / Book 12
7/29/2019 Busbar Size, Material and Distribution System
2/52
7/29/2019 Busbar Size, Material and Distribution System
3/52
01
Distribution and standards 02
Sauory condiions for he proecion of branchor disribued lines 04
Sizing busbars 06
Deermining he usable cross-secion of he bars 06
Checking he permissible hermal sress 12
Deermining he disances beween suppors 13
Magneic effecs associaed wih busbars 20
Checking he insulaion characerisics 23
Shaping and connecting bars 26
Rigid bars 26
Flexible bars 30
Curren ransformers (Ct) 31
Distribution blocks 32
Characerisics of disribuion blocks 33
Phase balancing 36
Legrand disribuion blocks 40
Choice of products 46
7/29/2019 Busbar Size, Material and Distribution System
4/52
B u S B a r S a n D D i S T r i B u T i o n
02
DiStRibutio
na
nDS
tanDaRDS
Distribution
and standards Distribution can be defined as supplyingpower to a number of physically separate
and individually protected circuits from
a single circuit.
Upstream protection
device
Distribution
Downstream protection
devices
I1 I2 I3 I4
I
^ M bsb t the tp f the eclsewth 2 cppe bs pe ple
^ Bch bsb cble sleeve:C-sect lmm bs
Dependng on the crcuts to be suppled, dstrbutonwll be v busbrs (flt or C-secton copper orlumnum brs, see p 06), v prefbrcted dstr-buton blocks (power dstrbuton blocks, modulrdstrbuton blocks, dstrbuton termnl blocks,see p 32) or v smple supply busbrs accordngto the stndrds, devce provdng protecton gnstshort crcuts nd overlods must be plced t thepont where chnge of cross-secton, type, nstll-
ton method or composton leds to reductonn the current-crryng cpcty (iEC 60364-4-43)
7/29/2019 Busbar Size, Material and Distribution System
5/52
03
DiStRibutio
na
nDS
tanDaRDS
P1S1
P2
S2 < S1
if were appled o he leer, hs rle wold lead
o over-szng of cross-secons for fal condons
the sandard herefore allows for here o be no
proecon devce a he orgn of he branch lne
sbjec o wo condons
upsream devce P1 effecvely proecs he branch
lne S2
or he branch lne S2
s less han hree mereslong, s no nsalled
near any combsble
maerals and every
precaon has been
aken o lm he rsks
of shor crcs
there s no oher ap-off
or power socke on he
branch lne S2 psream
of proecon P2
P1S1
P2
S2 < S1L < 3 m
P1 S1
P2
S2 < S1
P1
P2 P2
P3
S1
I14I13I12I11
S2
S3
I1
It
I24I23I22I21
S2I2
1st level
2nd level
Multi-level distribution
This layout can be used for exam-ple when several distributionblocks (2nd level) are suppliedfrom a single busbar (1st level).If the sum of the currents tappedoff at the first level (I1, I2, etc.)is greater than It, a protectiondevice P2 must be provided on S2. Conductorcross-sections:
S3< S2
S2< S1
Theore tica l layout
P1 protects S1P2 protects S2There is no reduction incross-section before P2
< Modulardistributionblock ^ Distribution via supply busbars
7/29/2019 Busbar Size, Material and Distribution System
6/52
B u S B a r S a n D D i S T r i B u T i o n
04
StatutoRY
ConDitionS
FoRP
RotECtinGb
Ra
nCHo
RD
iStRibutEDL
inES
B u S B a r S a n D D i S T r i B u T i o n
0404
Dsruonnd sndrds (connued)
STATUTORY CONDITIONS FOR PROTECTINGBRANCH OR DISTRIBUTED LINES
1 SUmmARY OF THE GENERALPRINCIPLE FOR CHECkING THERmALSTRESSFor nsuled cles nd conducors, he rekngme of ny curren resulng from shor crcuoccurrng ny pon mus no e longer hn heme ken for he emperure of he conducors orech her permssle lmths condon cn e verfed y checkng h heherml sress KS h he conducor cn whsnds greer hn he herml sress (energy i) h he
proecon devce llows o pss
2 CHECkING THE PROTECTIONCONDITIONS OF THE BRANCH LINE(S)wITH REGARD TO THE THERmALSTRESSESFor rnch lnes wh smller cross-secons (S2 300 < 300 > 300
Initial teperature C 70 90 90 60 70 105
Final teperature C 160 140 160 140 250 200 160 250
k values
Copper conductor 115 103 100 86 143 141 115135-115
Aluiniu conductor 76 68 66 57 94 93 - -
Connections solderedith tin solder for copperconductors
115 - - - - - - -
7/29/2019 Busbar Size, Material and Distribution System
7/52
05
StatutoRY
ConDitionS
FoRP
RotECtinGb
Ra
nCHo
RD
iStRibutEDL
inES
05
S1 crrespds he crss-sec f he m
cducr d S2 he crss-sec f he rchcducrthe mxmum legh f he rch cducrwh crss-sec S2 h s preced gs shrcrcus y prec devce P1 plced p a srepreseed y segme on i c e see usg hsreprese h he preced legh f he rchle decreses he furher wy he p-ff p sfrm prec P1, up he prh f y S2smller crss-sec p-ff he pex f hergle, bths mehd c e ppled shr-crcu prec- devces d hse prvdg prec gs
verlds respecvely, s lg s devce P2 effecvelyprecs le S2 d here s her p-ff eweeps a d o
4 3 mETRE RULE APPLIED TOOVERLOAD PROTECTION DEVICES
Whe prec devce P1 plced he hed f le S1des hve y verld prec fuc r schrcerscs re cmple wh he verldprec f he rch le S2 (very lg crcus,sgfc reduc crss-sec), s pssle
mve devce P2 up 3 m frm he rg (o) f hep-ff s lg s here s p-ff r pwer scke hs pr f usr sysem d he rsk f shrcrcu, fre d jury s reduced he mmum frhs pr (use f refrced sul cducrs,shehg, sepr frm h d dmgg prs)
5 EXEmPTION FROm PROTECTION
AGAINST OVERLOADS
the dgrm ve llusres hree exmples fp-ffs (S1, S2, S3) where s pssle prvdey verld prec r smply check wheherhs cd s me
- busr sysem S2 s effecvely preced gsverlds y P1 d he usr sysem des hvey p-ffs r pwer sckes upsrem f P2- busr sysem S3 s lkely hve verld cur-res rvellg ver d he usr sysem des hve y p-ffs r pwer sckes upsrem f P3 busr sysem S4 s eded fr cmmuc,crl, sgllg d smlr ype fucs d heusr sysem des hve y p-ffs r pwersckes upsrem f P4
P1
L1
L2
A
A O
N
B
B
M
N
P2
P2
P2S2
S2
S2
S2S1
P1A O
B
P2
S1
< 3m S2
P1A O2 O3 O4
S2 S3 S4
B2 B3 B4
P2 P3 P4
S1
7/29/2019 Busbar Size, Material and Distribution System
8/52
B u S B a r S a n D D i S T r i B u T i o n
06
DEtERMinin
G
tHEuSabLECRoSS-SECtionoF
tHEbaRS
Sizingbusbars The busbar constitutes the real backbone
of any distribution assebly. The ain busbarand branch busbars supply and distributethe energy.
DETERmINING THE USABLE CROSS-SECTION OF THE BARS
the requred cross-secon of he rs s deermnedccordng o he operng curren, he proeconndex of he enclosure nd fer checkng he shor-crcu herml sressthe currens re nmed n ccordnce wh hedefnons n sndrd iEC 60947-1 ppled o heusul operng condons for emperure rse Aof he rs whch does no exceed 65C
< Tempete se testf 3 x 120 x 10 peple bsb spptCt. n. 374 54
Ie: rated operating current to be taken intoconsideration in enclosures with natural ventilationor in panels with IP < 30 protection index (abientinternal teperature < 25C).
Ithe: thermal current in enclosure correspondingto the ost severe installation conditions. Sealedenclosures do not allow natural air change, as the IPprotection index is greater than 30 (abient internalteperature< 50C).
Cets ccdgt std d iEC 6094 7-1
The current-carrying capacity in n bars is less thann ties the current-carrying capacity in one bar.Use n = 1.6 to 1.8 for a group of 2 bars, n = 2.2 to 2.4for 3 bars and n = 2.7 to 2.9 for 4 bars.The wider the bars, the ore coefficient n is affected,the ore difficult they are to cool and the higherthe utual inductance effects.The perissible current density is not thereforeconstant: it is approximately 3 A/mm2 for sall barsand falls to 1 A/2 for groups of large bars.
Pllel bs
busrs cn e creed usng copper or lumnumrs Fl copper rs re used for usrs up o4000 a wh Legrnd suppors they provde greflexly of use, u requre mchnng on reques(see p 26) Legrnd lumnum rs re mde ofC-secon rls Connecon s crred ou whoudrllng, usng specl hmmer hed screws
they re used for usrs up o 1600 a, or 3200 ay doulng he suppors nd he rsthe elecrcl nd mechncl chrcerscs ofLegrnd usr suppors, nd src complnce whhe mxmum nsllon dsnces, ensure soloneween he poles nd h he rs cn resshe elecrodynmc forces
7/29/2019 Busbar Size, Material and Distribution System
9/52
7/29/2019 Busbar Size, Material and Distribution System
10/52
B u S B a r S a n D D i S T r i B u T i o n
08
DEtERMinin
G
tHEuSabLECRoSS-SECtionoF
tHEbaRS
Sizing busbars(continued)
< SpptsCt. n. 37324 cbe sed t cete veyhgh cet bsbs:p t 4000 a iP 55
XL3 4000 eclses
2.2. mounting bars edgewise on supports Cat. Nos. 373 24/25
^ Bs mted edgewse vetcl hztl bsbs:sppts hztl pst
Ie (A) IP < 30 Ithe (A) IP > 30 Nuber Di. () I2t (A2s) Icw1s (A)
700 630 1 50 x 5 114 x 109 33,750
1180 1020 2 50 x 5 456 x 109 67,500
1600 1380 3 50 x 5 103 x 1010 101,250
2020 1720 4 50 x 5 182 x 1010 135,000
800 700 1 63 x 5 181 x 109 42,525
1380 1180 2 63 x 5 723 x 109 85,050
1900 1600 3 63 x 5 163 x 1010 127,575
2350 1950 4 63 x 5 289 x 1010 170,100
950 850 1 75 x 5 256 x 109 50,625
1600 1400 2 75 x 5 103 x 1010 101,250
2200 1900 3 75 x 5 231 x 1010 151,875
2700 2300 4 75 x 5 410 x 1011 202,500
1000 900 1 80 x 5 292 x 109 54,000
1700 1480 2 80 x 5 117 x 1010 108,000
2350 2000 3 80 x 5 262 x 1010 162,000
2850 2400 4 80 x 5 467 x 1010 216,000
1200 1050 1 100 x 5 456 x 109 67,500
2050 1800 2 100 x 5 182 x 1010 135,000
2900 2450 3 100 x 5 410 x 1010 202,500
3500 2900 4 100 x 5 729 x 1010 270,000
1450 1270 1 125 x 5 712 x 109 84,375
2500 2150 2 125 x 5 285 x 1010 168,750
3450 2900 3 125 x 5 641 x 1010 253,125
4150 3450 4 125 x 5 114 x 1011 337,500
1750 1500 1 160 x 5(1) 117 x 1010 108,0003050 2450 2 160 x 5(1) 467 x 1010 216,000
4200 3300 3 160 x 5(1) 105 x 1011 324,000
5000 3800 4 160 x 5(1) 187 x 1011 432,000
(1) Stainless steel threaded assembly rod, diameter 8 to be supplied separately and cut to length
rgd flt cppe bs, 5 mm thck
7/29/2019 Busbar Size, Material and Distribution System
11/52
09
DEtERMinin
G
tHEuSabLECRoSS-SECtionoF
tHEbaRS
10mm5mm
^ 1 to 4 bas, 5 mm thick, pe pole ^ 1 to 3 bas, 10 mm thick, pe pole^ Simply otate the isolating suppotsto take 5 o 10mm thick bas
Ie (A) IP < 30 Ithe (A) IP > 30 Number Dim. (mm) I2t (A2s) Icw1s (A)
950 850 1 50 x 10 456 x 109 67,500
1680 1470 2 50 x 10 182 x 1010 135,000
2300 2030 3 50 x 10 410 x 1010 202,500
1150 1020 1 60 x 10 656 x 109 81,000
2030 1750 2 60 x 10 262 x 1010 162,000
2800 2400 3 60 x 10 590 x 1010 243,000
1460 1270 1 80 x 10 117 x 1010 108,000
2500 2150 2 80 x 10 467 x 1010 216,000
3450 2900 3 80 x 10 105 x 1011 324,000
1750 1500 1 100 x 10 182 x 1010
135,0003050 2550 2 100 x 10 729 x 1010 270,000
4150 3500 3 100 x 10 164 x 1011 405,000
2000 1750 1 120 x 10 262 x 1010 162,000
3600 2920 2 120 x 10 105 x 1011 324,000
4800 4000 3 120 x 10 263 x 1011 486,000
rigid flat coppe bas, 10 mm thick
Positioning bars edgewise encourages heatdissipation and is much the best option. If thebars have to be positioned flatwise (with thesupports in a vertical position) the current-
carrying capacities must be reduced (see nextpage).
7/29/2019 Busbar Size, Material and Distribution System
12/52
B u S B a r S a n D D i S T r i B u T i o n
10
DEtERMinin
G
tHEuSabLECRoSS-SECtionoF
tHEbaRS
Sizing busbars(continued)
2.3. mounting bars flatwise on supports Cat. Nos. 373 24/25
< Bs mted fltwse hztl bsbs: sppts vetcl pst
Ie (A) IP < 30 Ithe (A) IP > 30 Nuber Di. () I2t (A2s) Icw1s (A)500 420 1 50 x 5 114 x 109 33,750
750 630 2 50 x 5 456 x 109 67,500
1000 900 3 50 x 5 103 x 1010 101,250
1120 1000 4 50 x 5 182 x 1010 135,000
600 500 1 63 x 5 181 x 109 42,525
750 630 2 63 x 5 723 x 109 85,050
1100 1000 3 63 x 5 163 x 1010 127,575
1350 1200 4 63 x 5 289 x 1010 170,100
700 600 1 75 x 5 256 x 109 50,625
1000 850 2 75 x 5 103 x 1010 101,250
1250 1100 3 75 x 5 231 x 1010 151,875
1600 1400 4 75 x 5 410 x 1011 202,500
750 630 1 80 x 5 292 x 109 54,000
1050 900 2 80 x 5 117 x 1010 108,000
1300 1150 3 80 x 5 262 x 1010 162,000
1650 1450 4 80 x 5 467 x 1010 216,000
850 700 1 100 x 5 456 x 109 67,500
1200 1050 2 100 x 5 182 x 1010 135,000
1600 1400 3 100 x 5 410 x 1010 202,500
1900 1650 4 100 x 5 729 x 1010 270,000
1000 800 1 125 x 5 712 x 109 84,375
1450 1250 2 125 x 5 285 x 1010 168,750
1800 1600 3 125 x 5 641 x 1010 253,125
2150 1950 4 125 x 5 114 x 1011 337,500
1150 900 1 160 x 5(1)
117 x 1010
108,0001650 1450 2 160 x 5(1) 467 x 1010 216,000
2000 1800 3 160 x 5(1) 105 x 1011 324,000
2350 2150 4 160 x 5(1) 187 x 1011 432,000
(1) Stainless steel threaded assembly rod, diameter 8, to be supplied separately and cut to length
rgd flt cppe bs, 5 mm thck
7/29/2019 Busbar Size, Material and Distribution System
13/52
11
DEtERMinin
G
tHEuSabLECRoSS-SECtionoF
tHEbaRS
3 FLEXIBLE COPPER BARS
Flexible coppe basIe (A) IP < 30 Ithe (A) IP > 30 Cat. No. Dim. (mm) I2t (A2s) Icw1s (A)
200 160 374 10 13 x 3 2 x 107 4485
320 200 374 16 20 x 4 85 x 107 9200
400 250374 11 24 x 4
12 x 108 11,000374 67 20 x 5
470 320 374 17 24 x 5 19 x 108 13,800
630 400 374 12 32 x 5 34 x 108 18,400
700 500 374 44 40 x 5 53 x 108 23,000
850 630 374 57 50 x 5 83 x 108 28,700
1250 1000 374 58 50 x 10 33 x 109 57,500
2500 2000 2 x 374 58 2 x (50 x 10) 13 x 1010 115,000
Ie (A) IP < 30 Ithe (A) IP > 30 Number Dim. (mm) I2t (A2s) Icw1s (A)
880 650 1 50 x 10 456 x 109 67,500
1250 1050 2 50 x 10 182 x 1010 135,000
2000 1600 3 50 x 10 410 x 1010 202,500
1000 800 1 60 x 10 656 x 109 81,000
1600 1250 2 60 x 10 262 x 1010 162,000
2250 1850 3 60 x 10 590 x 1010 243,000
1150 950 1 80 x 10 117 x 1010 108,000
1700 1500 2 80 x 10 467 x 1010 216,000
2500 2000 3 80 x 10 105 x 1011 324,000
1350 1150 1 100 x 10 182 x 1010 135,000
2000 1650 2 100 x 10 729 x 1010 270,000
2900 2400 3 100 x 10 164 x 1011 405,000
1650 1450 1 120 x 10 262 x 1010 162,000
2500 2000 2 120 x 10 105 x 1011 324,000
3500 3000 3 120 x 10 263 x 1011 486,000
rigid flat coppe bas, 10 mm thick
7/29/2019 Busbar Size, Material and Distribution System
14/52
B u S B a r S a n D D i S T r i B u T i o n
12
CHECKinGt
HEPERMiSSibLEtHERMaLStRESS
Sizing busbars(coninued)
)
1010
109
108
107
106
105
104
103
102
101
I2t (A2s
100
Ik (A)100 101 102 103 104 105
I2t of the bar
Limited I2t
160
the hermal sress permied by he bars mus be
greaer han ha limied by he proecion device Cve shwg theml stess lmtedby DPX 250 Er (160 a)
Example: using a 12 x 4 mm rigid flat bar for 160 Aperissible I2t of the bar: 4.7 x 107 A2sProspective rms Ik: 10 kA (104 A)
The theral stress liited by this device canthen be read by plotting the above value on the
liitation curve given for the protection device(in this case, a DPX 250 ER 160 A): 5 x 105 A2s,value less than the I2t peritted by the bar.
CHECkING THE PERmISSIBLE THERmAL STRESS
The axiu theral stress value I2t taen into
consideration for a short-circuit current of less than
5 s is calculated using the formula It = KS, where:
- k = 115 As0.5/ for flexible copper bars
(max. temperature: 160C)
- k = 135 As0.5/for large cross-section rigid
copper bars (width greater than 50 ;max. temperature: 200C)
- k = 143 As0.5/for sall cross-section rigid
copper bars (width less than 50 ) and C-section
bars (max. temperature: 220C)
- k = 91 As0.5/ for rigid aluiniu bars
(max. temperature: 200C)
- S = bar cross-section in
The conventional value of the short-tie withstand
current with regard to theral stress, in relation
to a period of 1 s, is expressed by the formula:
Icw1s = It
Clcltg the theml stess
7/29/2019 Busbar Size, Material and Distribution System
15/52
13
DEtERMinin
GtHEDiStanCESbEtWEEnSuPP
oRtS
Prospective Ik
Limited Ipk
Non-limited
prospective Ipk
Prospective
rms Ik
Limited Ik
I
t
the dsance eween he suppors s deermned
accordng o he elecrodynamc sress generaed yhe shor crcuthe forces exered eween he ars durng a shorcrcu are proporonal o he peak value of he shor-crcu curren
1 RmS VALUE OF THE PROSPECTIVESHORT-CIRCUIT CURRENT (I)ths s he prospecve maxmum value of he currenwhch would crculae durng a shor crcu f herewere no proecon devce i depends on he ype andpower of he source the acual shor-crcu currenwll generally e lower n vew of he mpedance ofhe usar sysem the calculaon of he values oe aken no accoun s descred n book 4: Szngconducors and selecng proecon devces
2 PEAk CURRENT VALUE (Ip)the lmed peak curren s deermned from hecharacerscs of he proecon devce (see book 5:breakng and proecon devces)i represens he maxmum (peak) value lmed yhs devce if here s no lmng proecon devce,he prospecve peak value can e calculaed from heprospecve shor-crcu curren and an asymmerycoeffcen (see nex page)
DETERmINING THE DISTANCES BETwEEN SUPPORTS
This is the rs value of the short-circuit currentthat ould circulate if there ere no protection device.Ik1: between phase and neutral
Ik2: between 2 phasesIk3: between 3 phases
These values ere forerly called Isc1, Isc2 and Isc3.Do not confuse I ith Ip, hich is defined belo.
Prospectve ik
If in doubt or the actual prospective I valueis not non, use a value of at least 20 x In.
The electrodynaic forces are proportional tothe square of the pea current. It is this valuehich ust be taen into consideration hendeterining the distances beteen the sup-ports.
7/29/2019 Busbar Size, Material and Distribution System
16/52
B u S B a r S a n D D i S T r i B u T i o n
14
DEtERMinin
GtHEDiStanCESbEtWEEnSuPP
oRtS
Szng busbars(contnued)
n-lmtg ptect devceLmtg ptect devce
Prospective Ik
Limitation
curveNon
-limite
dIpk
limited Ipk
rms Ik (kA)
Ipk(k)
The liitation curves of the protection devices(DX and DPX) give the liited peak current accordingto the prospective short-circuit current (see Book 5Breaking and protection devices).The non-liited peak Ik curve corresponds to noprotection.
The table belo gives the liited peak value (Ipk)directly for the axiu prospective short-circuitvalue equal to the breaking capacity (Icu) of thedevice.For loer prospective short-circuit values, readingthe curves ill provide an optiised value.
when the busbar is protected by a non-liitingprotection device (for exaple DmX), the axiuvalue of the peak current is developed during thefirst half-period of the short circuit. This is referredto as the asyetric 1st peak.
The relationship beteen the peak value and the rsvalue of the prospective short-circuit current is
defined by the coefficient of asymmetry n:
Ipk (peak) = n x prospective rs Ik Device Rating Ipk (peak) ax.
(A) (k)DPX 125 16-25 119
DPX 125 40-63 15
DPX 125 100-125 17
DPX 160 25 143
DPX 160 40 to 160 20
DPX 250 ER 100 to 250 22
DPX 250 40 to 250 27
DPX-H 250 40 to 250 34
DPX 630 250 to 630 34
DPX-H 630 250 to 630 42
DPX 1600 630 to 1600 85
DPX-H 1600 630 to 1600 110
Value
of asymmetric
1st peak
Ik rms value
I
Time
Prospective rs Ik n(kA)
ik < 5 15
5 < ik < 10 17
10 < ik < 20 2
20 < ik < 50 21
50 < ik 22
7/29/2019 Busbar Size, Material and Distribution System
17/52
15
DEtERMinin
GtHEDiStanCESbEtWEEnSuPP
oRtS
General formula for calculating the forces in the event of a short circuit
D: length of the conductor (distancebeteen supports in the case of bars)
E: spacing between conductors
ith F in daN, I in A peak, and D and E in the same unit.
In practice, this formula is only applicable to very long (D > 20 E) round conductors.When D is shorter, a correction, called the end factor is applied:
- For 4 60 - 10
374 81 400 4.9 108 22.2 > 60 - 12
(1) the hermal re lme by he pream evce m be le han he i2 of he rbon block, an he hermal re lme by heownream evce m be le han he i2 of he cable: f neceary aap he cro-econ of he cable.
(2) upper/lower range - (3) spacng beween 50 mm/60 mm bar
legRand dIstRIButIon Blocks
the followng nallaon poble an charac-
erc ha have prevoly been ecrbe: raecrren, hor-crc reance, nlaon vale,nmber an capace of op, connecon meho,enable he mo able choce of rbon block obe eermne.
th lr r f iribi b h f wi riy f rqi-r, prii bh f xi fy.
drbon block(conne)
7/29/2019 Busbar Size, Material and Distribution System
43/52
41
legrandd
istributionb
loCks
th er ma l s re ss per mi ed by co d cors wi h PVC is la i o
s (2) 1.5 2.5 4 6 10 16 25 35 50 70 95
cpprI2t (a2s) 0.3 x 105 0.8 x 105 0.2 x 106 0.5 x 106 1.3 x 106 3.4 x 106 8.3 x 106 1.6 x 107 3.3 x 107 6.4 x 107 1.2 x 108
Icw(ka) 0.17 0.29 0.46 0.69 1.15 1.84 2.9 4 5.7 8 10.9
ai.I2t (a2s) 5.7 x 105 1.5 x 106 3.6 x 106 7 x 106 1.4 x 107 2.8 x 107 5.2 x 107
Icw(ka) 0.76 1.2 1.9 2.7 3.8 5.3 7.2
1 IndePendent dIstRIButIon teRmInal Blockstolly universl in eir pplicion, is ype of erminl block cn be used o disribue up o 100 a on beween
4 nd 33 oupus, depending on e clogue number. te incoming cross-secion is beween 4 nd 25 mm2,
nd e oupus beween 4 nd 16 mm2. They are fixed on 12x2 fl brs or th 35-15 nd th 35-7.5 rils.
^Combiig IP 2x ermial blocks ad spporCa. no. 048 10 eables a 2P, 3P or 4Pdisribio block o be creaed
7/29/2019 Busbar Size, Material and Distribution System
44/52
B u s B A r s A n d d I s t r I B u t I o n
42
legrandd
istributionb
loCks
^ spply bba pplie via ivealemial Ca. n. 049 06
2 lexIc suPPly BusBaRs
supply bubar can be connecte irectly an upplypower to Lexic modular devices up to 90 A. They are
available in ingle, two, three an four pole verion.They are a flexible solution, taking up little space, and
are eay to aapt for itribution in row.
^tal cmbiai f fci ig he Lexic ccep. Pwe, cla igallig ae gpe gehe i wiig aea cepig
he phyical aea f he iallai
^A pace i mae i heevice ha ee be cece
he pply bba
ditribution block(continue)
^ diibi via f ple pply bba Ca. n. 049 54 fiewih e pec Ca. n. 049 91
7/29/2019 Busbar Size, Material and Distribution System
45/52
43
legrandd
istributionb
loCks
3 dIstRIButIon teRmInals
These single pole distribution blocks are fixed directly
i mis of dPX 125, 160 250 er vics
and modular Vistop devices from 63 to 160 A. They areus fo simpifi isibuio fo ps w umb of mi cicuis is imi.
^ toally uiveral, diribuio block are uiablefor all ype of applicaio
^ For he upply ed of medium power diribuio pael,he 250 A modular diribuio block Ca. no. 048 77 caalo be fixed o a plae
4 modulaR dIstRIButIon Blocks
ts combi compcss ig cociocapacity. With a modular profile, they are fixed by
cippig oo th 35-15 is (en 50022). lg
mou isibuio bocks oy iso: y us suppy of p up o 250 a oi subgoups of oupus i ps wi ig powigs.
^ sigle pole modular profile diribuio block, oaliulaio of he pole o diribue 125 o 250 A
^ six 35 mm2 rigid oupu (25 mm2 flexible)for he oupu ermial Ca. no. 048 67
7/29/2019 Busbar Size, Material and Distribution System
46/52
B u s B A r s A n d d I s t r I B u t I o n
44
legrandd
istributionb
loCks
6 stePPed dIstRIButIon Blocks
these re vilble in clogue versions, compleen fully-ssemble from 125 o 400 a, n in moulr version (brs n suppors o be orereseprely) h cn be use o cree cusomise
isribuion.
5 extRa-flat dIstRIButIon Blocks
their lower heigh n heir curren-crryingcpciies men h he sme pnel cn mnge
the power requirements for the supply end (up to250 a) combine wih he compcness of moulrrows in slim pnels.
< the key feae fexa-fla iibiblck ae pwe,capaciy ceclage c-eci cable acmpace.
< 125 A eppeiibi
blck
< 250 A iibiblckCa. n. 374 35
^ 400 A eppe iibi blck
disribuion blocks(coninue)
7/29/2019 Busbar Size, Material and Distribution System
47/52
45
legrandd
istributionb
loCks
7 sIngle Pole alumInIum/coPPeRconnectIon Boxesdesige o provie he ierfce ewee lrge
cross-secio coucors eerig he pel,icluig hose me of lumiium, ierl
wirig coucors.two moels 120 mm2/70 mm2 (C.no. 374 80) 300 mm2/185 mm2
(C. no. 374 81) re ville.they c lso e use for lumi-ium operig circuis (ougoigcles) or whe he lie leghsrequire the use of large cross-secios.
8 vIkIng3 PoWeR teRmInalBlocksthese sigle pole locks re use for he juciobetween the enclosure and the external cables. They
are fixed on a4 ril or ple ke Cab 3 Duplix labelling. They provide numerous solutions
for coecio wih lumiium or copper cles,wih or wihou lugs.
diffr i firi br by ipy i h b prip.
Equipoenial linkbeween wo boxesusing srips provie
All Viking3 erminal blocks: see Book 11
< Alumin./copper irecconnecion
Cable/cable
terminal for cable lug/Cable
terminal for cable lug/terminalfor cable lug
Cable/terminal for cable lug
Al/Cu
Juncion disribuion Branch-line
Cu Cu
CuCu
Al/Cu
Cu
7/29/2019 Busbar Size, Material and Distribution System
48/52
B u s B A r s A n d d I s t r I B u t I o n
46
ChoiCeo
fP
roduCts
chi prds
spply bba fm 63 90 A (Ipk 17 k)
typ lghuivrs
1-p + rr 1-p
2-p2-p bd
3-phs3-p 4-p
Prg-yp1 row 049 26 049 38 049 40 049 42 049 44
meter 049 37 049 39 049 41 049 43 049 45
rk-yp1 row 049 11 - 049 17
meter 049 12 049 14 049 18 049 20
diibi emial blck fm 63 100 A (Ipk 10 k)
nmbr ps
Br rmi bks Isd rmi bks IP 2x (xxB)wih srws sppr bk b gr
4 048 01 048 20 048 50 048 40 048 30
6 048 16 048 15
8 048 03 048 22 048 52 048 42 048 32
12 048 24 048 54 048 44 048 34
14 048 05
16 048 25 048 45 048 35
19 048 06
21 048 26 048 46 048 36
24 048 07
33 048 28 048 48 048 38
Mla iibi b lck fm 40 250 A (Ipk 14.5 42 k)
admissibmximmrig (a)
2-p 4-p trmi bks IP 2x
c.ns
nmbr d si fxib drs (mm) c.ns
nmbr d si fxib drs (mm) erh nr
addiips(mm)Ips ops Ips ops
40 048 81 2 x 10 11 x 4 048 85 2 x 10 11 x 4 048 34 048 44 12 x 6
100 048 80 2 x 16 5 x 10 048 84 2 x 16 5 x 10 048 32 048 42 8 x 6
125
048 82 2 x 2 5 2 x 16 + 11 x 1 0 048 86 2 x 2 5 2 x 16 + 7 x 10 048 44 12 x 6
048 88 2 x 25 2 x 25 + 11 x 10 048 35 048 45 16 x 6
048 76 1 x 35 1 x 25 + 1 x 16 +14 x 10
048 46 21 x 6
160 048 79 1 x 702 x 25 + 4 x 16 +
8 x 10048 45 16 x 6
250 048 77 1 x 1201 x 35 + 2 x 25 +
2 x 16 + 6 x 10
049 26 049 11
048 03 048 15 048 68
7/29/2019 Busbar Size, Material and Distribution System
49/52
47
ChoiCeo
fP
roduCts
single pole modular ditribution block and ditribution terminalfrom 125 to 250 A (Ipk 27 to 60 k)
admiibl mximumrtig (a)
ct.nnumbr d ti dutr pr pl
(mm)
Iput output
mdulr ditributiblk
125 048 71 4 x 35 12 x 10
160 048 83 1 x 50 3 x 25 + 2 x 16 + 7 x 10
250 048 73 1 x 120 6 x 25 + 4 x 10
ditributi trmil
160 048 67direct into ownstream
terminal6 x 25
250 048 68direct into ownstream
terminal4 x 35 + 2 x 25
Power ditribution bl ock from 125 to 400 A (Ipk 20 to 75 k)
admiibl mximumrtig (a)
extr-ft stppd
ct.n
numbr d ti dutr pr pl (mm) ct.n
numbr d ti dutr pr pl (mm)
Iput output Iput output
125374 47 1 x 35
10 x 16 (Ph)17 x 16 (N)
373 954 bars 12 x 4 mm receiving 5
connectors 2 x 10 each
374 30 1 x 35 5 x 25
160 374 31 1 x 70 5 x 35
250 374 00 1 x 1501 x 70 or 1 x 50 +1 x 35 or 2 x 35
374 35 1 x 120 5 x 50
400373 08 2 x 8.5 mm
21 holes M6
70 mm max.connectors
374 42 2 x 18515 holes M6
+ 15 holes M8
Aluminium/copper ditribution boxe
admiibl mximumrtig (a)
ct. nnumbr d ti dutr pr pl (mm)
Iput lumiium Iput ppr output ppr
300 374 80 1 x 120 1 x 95 1 x 70
540 374 81 1 x 300 1 x 150 1 x 150
048 83 048 88 374 00 373 08
7/29/2019 Busbar Size, Material and Distribution System
50/52
B u s B A r s A n d d I s t r I B u t I o n
48
ChoiCeo
fP
roduCts
Ilaig pp a cppe ba
Bsbr spportsI adissib i rtig (a)
125 160 250 400 800 1000 1600 4000
uivrs spports1-po 373 98 374 37
4-po 373 96 374 32 374 36 373 10
xl spports 4-po 373 15 373 20 373 21 373 22/23 373 24/25
mi br of brs pr po
copprbrs
12 2 373 88 1
12 4 373 89 1 1
15 4 374 33 1
18 4 374 34 1 1 1 1
25 4 374 38 1 1
25 5 374 18 1 1
32 5 374 19 1 1
50 5 374 40 1 1 2 4
63 5 374 41 1 2 4
75 5 374 59 1 2 4
80 5 374 43 1 2 4
100 5 374 46 2 4
125 5 - 4
50 10 - 3
60 10 - 3
80 10 - 3
100 10 - 3
125 10 - 3
Ilaig pp f C-eci bba a almiim ba (p- 1600 A)
Isotig spport
eosr dpth () Brs igd Brs stggrd
475 or 725 373 66 373 67
975 373 68 373 69
373 24 373 10 373 66
aiic-stio brs
cross stio () ct.nos
524 373 54
549 373 55
586 373 56
686 373 57
824 373 58
7/29/2019 Busbar Size, Material and Distribution System
51/52
7/29/2019 Busbar Size, Material and Distribution System
52/52
Power guide:A complete set of technical documentation
wl Haqats an
intnatnal dpatmnt87045 Limoges Cedex - France
: + 33 (0) 5 55 06 87 87Fax : + 33 (0) 5 55 06 74 55
11 | Cabln
cmpnnts an
cntl axlas
CE
RTI
FIED
10 | enclss
an assmbly
ctfcatn
09 | opatn
fnctns
08 | Ptctnaanst xtnal
stbancs
01 | Sstanablvlpmnt
02 | P balanc
an chc f p
spply sltns
03 | elctcal
ny spply
04 | Szn cncts
an slctn
ptctn vcs
05 | Bakn
an ptctn
vcs
06 | elctcal
hazas an
ptctn ppl
07 | Ptctn
aanst lhtnn
ffcts
Annxs
glssay
Lxcn
13 | Tanspt an
stbtn ns
an nstallatn
EX29016
12 | Bsbas
an stbtn