Tooj Busbar Ampacity
Ampacity yog dab tsi?
Ampacity yog qhov siab tshaj plaws tam sim no (hauv Amperes) lub tsheb npav tooj liab tuaj yeem nqa tsis tu ncua yam tsis pub dhau nws qhov siab tshaj plaws ua haujlwm kub.Xav tias nws yog "kev muaj peev xwm tsheb" ntawm koj txoj kev loj hluav taws xob. Tshaj nws, thiab tooj liab heats li - muaj peev xwm melting rwb thaiv tsev, loosening kev sib txuas, los yog pib hluav taws.
IACS Conductivity txhais li cas?
IACS (International Annealed Copper Standard) yog ib tug qauv rau hluav taws xob conductivity.Ntshiab annealed tooj liab txhais tau tias yog 100% IACS. Siab dua IACS txhais tau tias tsawg zog poob raws li cua sov.
C11000, C10200, C10100:100% IACS (100% conductivity)
C12200:85-95% IACS (5-15% qis conductivity)
Rau tib qhov loj me me, 100% IACS qib nqa tam sim no ntau dua li 85% IACS qib.
Cov Lus Qhia Tseem Ceeb rau Txhua Lub Rooj Sib Tham hauv Cov Lus Qhia no
| Parameter | Tus nqi |
|---|---|
| Ambient kub | 35 ° F (95 ° F) |
| Qhov siab tshaj plaws busbar kub | 65℃(149℃F) |
| Ntau zaus | 50/60 Hz AC |
| Kev teeb tsa | Tooj liab liab nyob rau hauv qhib cua (ventilated) |
| Kev taw qhia | Pav ca ( ntsug mounting, kab rov tav busbar) |
C11000 tooj liab Busbar Ampacity
C11000 tooj liab busbar (100% IACS) yog tus qauv siv hluav taws xob feem ntau.Siv cov ampacity qhov tseem ceeb rau C11000, C10200, thiab C10100 - lawv zoo ib yam.
C11000 Pav ca tooj liab Busbar Ampacity (35℃Ambient, 65℃Max Temp)
| Dav (mm) | Thickness (hli) | Hla -section (mm²) | Lub hwj chim (ampacity) |
|---|---|---|---|
| 20 | 3 | 60 | 180 A |
| 20 | 5 | 100 | 250 A |
| 20 | 6 | 120 | 290 A |
| 25 | 3 | 75 | 220 A |
| 25 | 5 | 125 | 300 A |
| 25 | 6 | 150 | 350 A |
| 30 | 5 | 150 | 370 A |
| 30 | 6 | 180 | 410 A |
| 30 | 10 | 300 | 600 A |
| 40 | 5 | 200 | 460 A |
| 40 | 6 | 240 | 520 A |
| 40 | 10 | 400 | 780 A |
| 50 | 5 | 250 | 550 A |
| 50 | 6 | 300 | 620 A |
| 50 | 10 | 500 | 950 A |
| 60 | 6 | 360 | 720 A |
| 60 | 10 | 600 | 1050 A |
| 60 | 15 | 900 | 1400 A |
| 80 | 6 | 480 | 900 A |
| 80 | 10 | 800 | 1350 A |
| 80 | 15 | 1200 | 1800 A |
| 100 | 10 | 1000 | 1600 A |
| 100 | 15 | 1500 | 2150 A |
| 100 | 20 | 2000 | 2650 A |
| 120 | 10 | 1200 | 1850 A |
| 120 | 15 | 1800 | 2500 A |
| 120 | 20 | 2400 | 3100 A |
A 50mm dav x 6mm tuab tooj liab busbar nqa620 amp uanyob rau hauv tus txheej txheem. Yog tias koj qhov load yog 500 Amps, qhov loj me no ua haujlwm nrog cov npoo. Yog tias koj lub load yog 700 Amps, koj yuav tsum mus txog 60mm x 10mm (1050 Amps).
Rau ib daim ntawv teev tag nrho ntawm qhov ntau thiab tsawg thiab specifications, mus saib peb C11000 tooj liab busbar khoom nplooj.
Ampacity rau Thicker Busbars (15mm - 30mm)
Rau siab - cov ntawv thov tam sim no, siv cov txiaj ntsig no:
| Dav (mm) | Thickness (hli) | Hla -section (mm²) | Lub hwj chim (ampacity) |
|---|---|---|---|
| 60 | 20 | 1200 | 1750 A |
| 80 | 20 | 1600 | 2250 A |
| 100 | 25 | 2500 | 3100 A |
| 100 | 30 | 3000 | 3600 A |
| 120 | 25 | 3000 | 3600 A |
| 120 | 30 | 3600 | 4200 A |
Tau txais koj cov lus pom zoo Busbar pub dawb
C10100 thiab C10200 tooj liab Busbar Ampacity
| Qib | Kev coj ua | Ampacity vs C11000 | Thaum siv |
|---|---|---|---|
| C10100 (TSI) | 100-101% IAB | Ib yam | Lub tshuab nqus tsev siab, siab heev cryogenic |
| C10200 (TSI) | 100% IAB | Ib yam | Oxygen-yuav tsum tau pub dawb, nyiaj txiag paub meej |
Koj tsis tas yuav hloov koj lub busbar loj thaum hloov ntawm C11000 rau C10200 lossis C10100.Lub ampacity yog tib yam.
C12200 tooj liab Busbar Ampacity
C12200 tooj liab busbar muaj 85-95% IACS conductivity - txog 10-15% qis dua C11000.Qhov no txhais tau tias rau tib lub cev loj, C12200 nqa tsawg dua tam sim no.
C12200 Copper Busbar Ampaity (35℃Ambient, 85% IACS)
| Dav (mm) | Thickness (hli) | C11000 Qhov siab | C12200 Ampacity (kwv yees) |
|---|---|---|---|
| 50 | 5 | 550 A | 470-495 A |
| 50 | 6 | 620 A | 530-560 A |
| 60 | 10 | 1050 A | 890-945 A |
| 80 | 10 | 1350 A | 1150-1215 A |
| 100 | 10 | 1600 A | 1360-1440 A |
Yuav Ua Li Cas Loj C12200 kom phim C11000 Ampacity
Txhawm rau ua tiav tib lub ampacity nrog C12200 li C11000, nce tus ntoo khaub lig-section los ntawm 10-15%.Qhov no feem ntau txhais tau tias nce ib tus qauv loj.
Piv txwv:Koj xav tau 620 Amps.
C11000 daws: 50mm x 6mm (620A)
C12200 kev daws teeb meem:Siv 60mm x 6mm (720A)los yog 50mm x 8mm (kev cai)
5 Yam tseem ceeb uas cuam tshuam rau tooj liab Busbar Ampacity
Ambient Kub
Cov kub ambient siab dua txo ampacity. Rau txhua 10℃saum toj no 35 degree, txo ampacity li ntawm 12%.
| Ambient Kub | Kho qhov Factor |
|---|---|
| 35 ° F (95 ° F) | 1.00(lub hauv paus) |
| 40℃(104℃F) | 0.95 |
| 45℃(113℃F) | 0.88 |
| 50℃(122℃F) | 0.82 |
| 55℃(131℃F) | 0.76 |
| 60℃(140℃F) | 0.71 |
Ventilation (Enclosed vs Qhib Cua)
Busbars nyob rau hauv cov vaj huam sib luag los yog switchgear kub dua li cov nyob rau hauv qhib cua vim cua sov tsis tuaj yeem khiav.
| Hom kev teeb tsa | Kho qhov Factor |
|---|---|
| Qhib cua (ventilated) | 1.00(lub hauv paus) |
| Lub vaj huam sib luag kaw (qhov cua tsis zoo) | 0.85 - 0.90 |
| Sealed enclosure (tsis muaj qhov cua) | 0.75 - 0.80 |
Ntau Busbars Side by Side (Cov nyhuv sib thooj)
Thaum cov busbars tau muab tso ze ua ke, lawv sib xyaw ua ke - tshwj xeeb tshaj yog nrog AC tam sim no (cov nyhuv sib thooj).
| Number of Bars | Center-rau-Center Spacing | Kho qhov Factor |
|---|---|---|
| 1 bar | N/A | 1.00 |
| 2bar ua | Ib yam li bar dav | 0.85 |
| 2bar ua | 2 x bar dav | 0.92 |
| 3bar ua | Ib yam li bar dav | 0.75 |
| 3bar ua | 2 x bar dav | 0.85 |
Surface Finish (Pib vs Plated vs Insulated)
Tooj liab liab thiab tin -plated tooj liab muaj ampacity zoo sib xws. Silver-plated zoo dua me ntsis. Rwb thaiv tsev txo ampacity.
| Nto tiav | Qhov cuam tshuam rau Ampacity |
|---|---|
| Tooj liab | Lub hauv paus (1.00) |
| Tin-plated | Ib yam li liab qab(tin yog nyias thiab conductive) |
| Nyiaj -plated | +2-5%(kev tiv thaiv qis dua, tab sis cov cua kub zoo sib xws) |
| Kub shrink tubing | -10 mus rau -15%(Insulation cuab yeej cua sov) |
| Epoxy txheej | -15 mus rau -20%(thicker rwb thaiv tsev) |
Qhov siab
Ntawm qhov siab siab, cov cua nyias ua kom txias dua. Tshaj 2000 meters (6500 ko taw), txo ampacity.
| Qhov siab | Kho qhov Factor |
|---|---|
| 0 – 1000 m | 1.00 |
| 1000 – 2000 m | 0.98 |
| 2000 – 3000 m | 0.95 |
| 3000 – 4000 m | 0.92 |
Copper Busbar Sizing Formulas
Rau DC Applications
Hla-section (mm²) ≈ Tam sim no (Amps) ÷ 1.5
Piv txwv li: 500A DC load → 500 ÷ 1.5 =333mm 3 3→ ze tshaj tus qauv: 50mm x 7mm (350mm²)
Rau AC daim ntawv thov (50/60 Hz)
Hla-section (mm²) ≈ Tam sim no (Amps) ÷ 1.8
Piv txwv li: 500A AC load → 500 ÷ 1.8 =278mm 2 y→ ze tshaj tus qauv: 50mm x 6mm (300mm²)
Rule of Thumb (Nco qhov no)
| Busbar Loj | Kwv yees Ampacity |
|---|---|
| 20 x 5 mm | 250 A |
| 25 x 5 mm | 300 A |
| 30 x 5 mm | 370 A |
| 40 x 5 mm | 460 A |
| 50 x 5 mm | 550 A |
| 50 x 6 mm | 620 A |
| 60 x 10 mm | 1050 A |
| 80 x 10 mm | 1350 A |
| 100 x 10 mm | 1600 A |
Kev Cai Copper Busbar Loj
Standard vs Custom Sizes
| Parameter | Standard Sizes (Tshooj) | Custom Size (Ua rau Order) |
|---|---|---|
| Dav | 20, 25, 30, 40, 50, 60, 80, 100, 120mm | 10-250mm (yeem) |
| Thickness | 3, 5, 6, 10, 15, 20 mm | 3-30mm (yeem) |
| Ntev | 2000, 4000 mm | Txog li 6000mm (txhua yam) |
| MOQ | 10 daim | 50 daim |
Thickness vs Dav - Qhov twg cuam tshuam rau Ampacity Ntau?
Rau tib tus ntoo khaub lig- ntu ntu, qhov dav dua, nyias nyias busbar nqa me ntsis tam sim no tshaj qhov nqaim, tuab duavim nws muaj ntau qhov chaw rau cov cua sov dissipation.
Piv txwv (ob leeg 600mm² cross-section):
60mm x 10mm=1050A
50mm x 12mm=kwv yees li 980A (kev cai loj)
Custom Shape Busbars (L-Shape, Z-Shape, U-Shape)
Bent busbars muaj tib lub ampacity li ncaj busbars ntawm tib tus ntoo khaub lig-section- ntev npaum li lub vojvoog khoov tau raws li qhov yuav tsum tau muaj tsawg kawg nkaus (2x thickness rau C11000). Tight khoov tuaj yeem tsim cov cua sov hauv zos.
Rau L-shape, Z-shape, lossis U-shape busbars, tus ntoo khaub lig-section ntawm khoov yog qhov tseem ceeb.Siv tib txoj cai sizing.
Yuav Ua Li Cas Peb Txheeb Xyuas Copper Busbar Ampacity thiab Conductivity
| Kuaj | Khoom siv | Txuj | Kev lees txais |
|---|---|---|---|
| Kev coj ua | Eddy tam sim no sigmascope (Foerster) | ASTM E 1004 Cov Lus Qhia | C11000 / C10200 / C10100: Ntau dua lossis sib npaug rau 100% IACS; C12200: Ntau dua lossis sib npaug rau 85% IACS |
| Kub nce | Thermocouple array + cov ntaub ntawv logger | IEC 61439: Ua | ΔT Tsawg dua lossis sib npaug li 65℃ntawm qhov ntsuas tam sim no |
| Qhov ntev | CMM (Hexagon) + digital calipers | ASTM B 187 Cov khoom lag luam | Dav / thickness ± 0.1 hli; Ntev ± 0.5mm |
| Kev tiv thaiv | Micro{0}}ohmmeter (4-xaim Kelvin txoj kev) | ASTM B193 | Matches IACS xam |
Precision Dimensional Control rau tooj liab Busbars
Peb Cov Khoom Siv Tsim Khoom
| Khoom siv | Muaj peev xwm | Ua siab ntev |
|---|---|---|
| CNC shearing tshuab | Txiav kom ntev txog li 6000mm | ± 0.5 hli |
| CNC punching xovxwm (AMADA) | Qhov punching rau mounting | ± 0.1mm txoj kab uas hla, ± 0.2mm txoj haujlwm |
| CNC xovxwm nres (ACCURL) | Khoov (L, Z, U duab) | ± 1℃kaum sab xis, ± 0.5mm txoj haujlwm |
| CMM tshuaj xyuas (Hexagon) | Daim ntawv pov thawj tag nrho | ± 0.01mm rau cov yam ntxwv tseem ceeb |
Qhov Loj Muaj
| Parameter | Yam tsawg kawg nkaus | Qhov siab tshaj plaws |
|---|---|---|
| Thickness | 3 hli | 30 mm |
| Dav | 10 mm | 250 hli |
| Ntev | 100 hli | 6000 hli |
Tiv thaiv koj cov tooj liab Busbars thaum Shipping
| Txheej | Khoom siv | Lub hom phiaj |
|---|---|---|
| Sab hauv qhwv | VCI (vapor corrosion inhibitor) zaj duab xis | Tiv thaiv oxidation thaum lub sij hawm thauj khoom hiav txwv |
| Interleaving | Foam ntawv los yog kraft ntawv | Tiv thaiv kev khawb ntawm cov tuav |
| Bundling | Hlau hlua nrog ntug tiv thaiv | Ruaj ntseg bundles rau lifting |
| Pallet | Thaum tshav kub kub- kho plywood (IPPC tau ntawv pov thawj) | Lub hauv paus rau kev thauj mus los forklift |
| Sab nrauv qhwv | Hnyav- lub luag haujlwm stretch qhwv + kaum tus neeg tiv thaiv | Tiv thaiv pallet thaum tuav |
FAQ
Q1: Muaj pes tsawg amps tuaj yeem nqa 50mm x 5mm tooj liab busbar?
Lub 50mm x 5mm C11000 tooj liab busbar nqa 550 Amps ntawm 35℃ambient nyob rau hauv qhib huab cua.Ntawm 50℃ambient, nws nqa 451 Amps (550 × 0.82). Rau C12200 (85% IACS), tib qhov loj yog kwv yees li 470 Amps ntawm 35 degree. Ib txwm siv cov kev kho kom raug rau koj qhov kev teeb tsa tshwj xeeb.
Q2: Dab tsi yog qhov ampacity derating rau 50℃ambient kub?
Rau 50℃ambient, muab lub hauv paus ampacity los ntawm 0.82.Piv txwv li, 620A busbar ntawm 35℃yog ntsuas 508A ntawm 50 degree. Qhov no yog tus qauv siv los ntawm IEC thiab NEC cov lus qhia. Tsis txhob hla cov kauj ruam no rau kev teeb tsa hauv cov huab cua sov, ze ntawm cov cua sov- tsim cov khoom siv, lossis hauv cov tsev tsis muaj cua sov.
Q3: Puas yog busbar thickness lossis dav cuam tshuam rau ampacity ntau dua?
Dav cuam tshuam rau ampacity ntau dua thickness rau tib tus ntoo khaub lig-sectional cheeb tsam.Ib qhov dav dua, thinner busbar (piv txwv li, 60mm x 5mm) muaj ntau qhov chaw rau cov cua sov dissipation tshaj qhov nqaim, thicker busbar (xws li, 30mm x 10mm) nrog tib tus ntoo khaub lig-section. Xaiv qhov dav ua ntej, tom qab ntawd thickness, thaum qhov chaw tso cai.
Q4: Ntau npaum li cas C12200 busbar xav tau kom phim C11000 ampacity?
Nce tus ntoo khaub lig- ntu los ntawm 10-15% thaum siv C12200 es tsis txhob C11000.Rau 50mm x 6mm C11000 (620A), siv 60mm x 6mm C12200 (720A hauv paus) lossis 50mm x 7mm kev cai. Formula: C12200 cross-section=C11000 cross{15}}section ÷ 0.85. Qhov no them nyiaj rau C12200's 85-95% IACS conductivity.
Q5: Puas yog tin plating cuam tshuam rau tooj liab busbar ampacity?
Tin plating tsis muaj qhov cuam tshuam loj rau ampacity.Lub tin txheej yog nyias nyias (3-8 microns) thiab ua tau zoo heev. Rau ntau daim ntawv thov, koj tuaj yeem siv tib qhov ampacity qhov tseem ceeb xws li tooj liab liab. Txawm li cas los xij, cua sov shrink tubing los yog epoxy txheej txo ampacity los ntawm 10-20% vim hais tias rwb thaiv tsev ntxiab cua sov.
Q6: Yuav ua li cas koj xam ampacity rau ntau busbars ib sab?
Rau ob lub busbars muab tso rau ntawm ib sab nrog qhov sib npaug ntawm qhov dav dav, siv qhov kho kom zoo ntawm 0.85.Rau peb qhov bar, siv 0.75. Rau AC daim ntawv thov, qhov txo qis dua rau DC vim muaj qhov sib thooj. Yog tias qhov sib txawv tau nce mus rau 2x bar dav, qhov zoo tuaj yeem txhim kho mus rau 0.92 (ob bars) lossis 0.85 (peb tuav).
Q7: Puas yog khoov lub busbar tooj liab txo nws qhov ampacity?
Tsis yog - lub busbar khoov kom zoo muaj tib lub ampacity raws li ib tug ncaj busbar ntawm tib tug ntoo khaub lig-section.Txawm li cas los xij, yog tias lub vojvoog khoov nruj dhau (hauv qab 2x thickness rau C11000), cov cua sov hauv zos tuaj yeem tshwm sim. Ua raws li qhov tsawg kawg nkaus khoov vojvoog cov lus qhia: 2x thickness rau tuav Tsawg dua los yog sib npaug rau 6 hli, 2.5-3x thickness rau cov tuav tuab.
Q8: Puas muaj qhov sib txawv ntawm AC thiab DC rau tooj liab busbars?
Yog, tab sis me me. DC ampacity yog kwv yees li 5-8% siab dua AC rau tib lub busbar loj.Qhov no yog vim AC ntsib cov nyhuv ntawm daim tawv nqaij thiab cov nyhuv sib thooj, uas ua kom pom tseeb tam sim no ntawm qhov chaw thiab ua kom muaj kev tiv thaiv zoo. Rau feem ntau daim ntawv thov, siv AC ampacity rooj rau DC muaj kev nyab xeeb (me ntsis kev saib xyuas).
Q9: Koj puas tuaj yeem tsim cov khoom tsis yog - tus qauv tooj liab busbar qhov ntau thiab tsawg?
Yog - peb tsim kev cai tooj liab busbar qhov ntau thiab tsawg nrog dav ntawm 10mm mus rau 250mm thiab thickness ntawm 3mm mus rau 30mm.MOQ rau qhov ntau thiab tsawg yog 50 daim ib qhov loj me. Qhov ntau thiab tsawg (20, 25, 30, 40, 50, 60, 80, 100, 120mm dav) yog muaj los ntawm Tshuag nrog MOQ 10 daim.Xa koj daim duab rau ib nqe lus.
Q10: Koj puas muab ntawv pov thawj ampacity test report rau koj cov tooj liab busbars?
Yog - txhua qhov khoom xa tuaj suav nrog daim ntawv pov thawj zeb kuaj pom qhov ua tau zoo (% IACS).Rau cov haujlwm loj, peb tuaj yeem muab cov ntaub ntawv ntsuas kub nce siab los ntawm peb lub chaw kuaj mob. Peb kuj tuaj yeem npaj qhov thib peb - tog neeg ua pov thawj los ntawm SGS, BV, lossis lwm lub koom haum raws li koj qhov kev thov. Qhov no yog ib yam rau switchgear manufacturers xav tau ntaub ntawv pov thawj.
Q11: Yuav ua li cas kuv xam busbar loj raws li load tam sim no?
Rau DC: hla-section (mm²) ≈ Amps ÷ 1.5. Rau AC: hla-section (mm²) ≈ Amps ÷ 1.8.Tom qab ntawd xaiv qhov ze tshaj tus qauv loj los ntawm lub rooj ampacity thiab siv cov khoom kho kom haum rau qhov kub, qhov cua, thiab ntau qhov tuav. Piv txwv li: 400A AC → 400 ÷ 1.8=222mm² → ze tshaj tus qauv: 40mm x 6mm (240mm², 520A hauv paus).
