Vim li cas tooj liab nyiam dua aluminium rau transformer windings?

Copper yog yooj yim dua rau kev ua hauj lwm nrog nyob rau hauv khoov thiab reshaping.

Nws yog ntau zam txim thiab txhim khu kev qha nyob rau hauv electromechanical kev nyuaj siab thiab kev co.

Tooj tooj yog yooj yim dua los txiav kev ntseeg siab (clamping nyob rau hauv terminals thiab koom, soldering) nrog ntau tsawg fuss nyob rau hauv kev npaj rau siab ntseeg koom.

Aluminium rau tooj liab junctions yuav tsum tau tshwj xeeb haum kom tshem tawm electrolysis.

 

Ua ntej, aluminium tus conductivity qis dua tooj liab. Txhawm rau kom them nyiaj, txhuas hlau yuav tsum muaj tus ntoo khaub lig loj dua - ntu tshaj qhov sib npaug tooj liab xaim kom muaj kev coj ua tib yam. Qhov no txhais tau tias windings qhov txhab nrog txhuas hlau yuav zoo li muaj qhov ntim ntau dua piv nrog cov hlau sib npaug.

Tooj liab qhia txog qib qis ntawm creep. Nyob rau hauv huab cua loading thiab kub tej yam kev mob ntawm tis transformer windings, creep tus nqi ntawm txhuas tuaj yeem ncav cuag 25 npaug siab dua tooj liab. Qhov no ua rau aluminium qhov txhab faib cov khoom siv hluav taws xob muaj qhov muaj txiaj ntsig zoo dua rau kev ua tsis tiav dua li cov qhov txhab tooj liab.

Cov xov tooj tooj liab tsis muaj qhov ua haujlwm galvanic, vim tias lawv yog tib yam li cov khoom sib txuas, uas feem ntau yog ua los ntawm tooj liab lossis tooj dag (ib qho tooj liab alloy). Aluminium poob cov khoom los ntawm kev ua haujlwm galvanic, ua rau poob ntawm kev sib cuag. Copper yog ib qho nyuaj, muaj zog thiab ntau dua ductile tshaj aluminium, nthuav tsawg dua thiab tsis ntws ntawm kev txiav tawm. Yog li ntawd nws tsis tas yuav tsum tau soj ntsuam raws sij hawm thiab zawm ntawm screws. Aluminium ntws tawm ntawm qhov kev txiav tawm nyob rau hauv siab.

Copper qhov txhab faib transformers yog invariably me thiab sib dua li txhuas qhov txhab uas muaj peev xwm sib npaug thiab lub zog ua haujlwm. Txij li thaum qhov kev tiv thaiv ntawm tooj liab yog 0.6 npaug ntawm txhuas, tus ntoo khaub lig - ntu ntawm txhuas tus neeg xyuas pib yuav tsum yog 1.66 npaug ntau dua li ntawm tus neeg xyuas pib tooj liab rau tib qhov kev tiv thaiv. Qhov no ua rau cov tub ntxhais transformer loj dua thiab ntim, uas tseem ua rau lub tank loj dua rau cov qauv tooj liab. Thaum txhuas yog sib dua li tooj liab ntawm qhov sib npaug ntawm qhov sib npaug, nyob rau hauv cov ntaub ntawv ntawm kev faib khoom transformers, qhov zoo dua no yog nullified los ntawm qhov nce ntim (thiab yog li qhov hnyav) ntawm tus neeg xyuas pib, steel core, tank thiab roj.

Thaum kawg, transformers nrog tooj liab windings feem ntau tsis tshua kim los tsim dua cov uas muaj aluminium windings. Qhov no yog vim nws tsis yog tsuas yog tus nqi ntawm tus neeg xyuas pib, tab sis kuj yog tus nqi ntawm cov hlau nplaum hlau, lub tank thiab cov roj uas xav tau kom ua tiav qib kev ua haujlwm ntawm lub zog uas txiav txim siab tag nrho cov khoom siv hluav taws xob.

Technical Parameter rau 6kV, 10kV & 30kVA-2500kVA Nrog Tawm Circuit Qhuav Hom Transformer

(KVA) Rated peev	Voltage kev sib xyaw			Connection Group Symbol	Tsis muaj -load Loss(W)	Load Loss (W)			Tsis muaj -load tam sim no (%)	Luv-circuit impedance(%)
	Lub zog hluav taws xob (KV)	Tapping ntau yam ntawm High Voltage	Tsawg Voltage (KV)			130℃(B) (100 degree)	155℃(F) (120 degree)	180℃(H) (145 degree)
30	6 6.3 6.6 10 10.5 11	±2.5% ±5%	0.4	Dyn11 Yyn0	190	670	710	760	2	4
50					270	940	1000	1070	2
80					370	1290	1380	1480	1.5
100					400	1480	1570	1690	1.5
125					470	1740	1850	1980	1.3
160					540	2000	2130	2280	1.3
200		±2X2.5% ±5%			620	2370	2530	2710	1.1
250					720	2590	2760	2960	1.1
315					880	3270	3470	3730	1
400					980	3750	3990	4280	1
500					1150	4590	4880	5230	1
630					1340	5530	5880	6290	0.85
630					1300	5610	5960	6400	0.85	6
800					1520	6550	6960	7460	0.85
1000					1770	7650	8130	8760	0.85
1250					2090	9100	9690	10300	0.85
1600					2450	11000	11700	12500	0.85
2000					3050	13600	14400	15500	0.7
2500					3600	16100	17100	18400	0.7
1600					2450	1220	12900	13900	0.85	8
2000					3050	15000	15900	17100	0.7
2500					3600	17700	18800	20200	0.7

 

Technical Parameter rau 20kV 50kVA-2500kVA Nrog Tawm Circuit Court Qhuav Hom Transformer

(KVA) Rated peev	Voltage kev sib xyaw			Connection Group Symbol	Tsis muaj -load Loss(W)	Load Loss (W)			Tsis muaj -load tam sim no (%)	Luv-circuit impedance(%)
	Lub zog hluav taws xob (KV)	Tapping ntau yam ntawm High Voltage	Tsawg Voltage (KV)			130℃(B) (100 degree)	155℃(F) (120 degree)	180℃(H) (145 degree)
50	20 22 24	±2.5% ±5%	0.4	Dyn11 Yyn0	340	1160	1230	1310	2	5.0
100					540	1870	1990	2130	1.8
160					670	2350	2470	3460	1.8
200		±2X2.5% ±5%			730	2770	2940	3140	1.8
250					840	3220	3420	3660	1.8
315					970	3850	4080	4360	1.8
400					1150	4650	4840	5180	1.1
500					1350	5460	5790	6190	1.1
630					1530	6450	6840	7320	1
800					1750	7790	8260	8840	1
1000					2070	9220	9780	10400	0.85
1250					2380	10800	11500	12300	0.85
1600					2790	13000	13800	14800	0.85
2000					3240	15400	16300	17500	0.7	8.0
2500					3870	18200	19300	20700	0.7
2000					3240	16800	17800	19100	0.7
2500					3870	20000	21200	22700	0.7

 

Technical Parameter rau 35kV 50kVA-2500kVA Nrog Tawm Circuit Court Qhuav Hom Transformer

(KVA) Rated peev	Voltage kev sib xyaw			Connection Group Symbol	Tsis muaj -load Loss(W)	Load Loss (W)			Tsis muaj -load tam sim no (%)	Luv-circuit impedance(%)
	Lub zog hluav taws xob (KV)	Tapping ntau yam ntawm High Voltage	Tsawg Voltage (KV)			130℃(B) (100 degree)	155℃(F) (120 degree)	180℃(H) (145 degree)
50	35 36 37 38.5	±2.5% ±5%	0.4	Dyn11 Yyn0	450	1340	1420	1520	2.3	6
100					630	1970	2090	2230	2
160					0.79	2650	2810	3000	1.5
200		±2X2.5% ±5%			0.88	3130	3320	3550	1.5
250					0.99	3580	3800	4060	1.3
315					1170	4250	4510	4820	1.3
400					1370	5100	5410	5790	1.1
500					1520	6270	6650	7110	1.1
630					1860	7250	7690	8230	1
800					2160	8600	9120	9760	1
1000					2430	9860	10400	11100	0.75
1250					2830	12000	12700	13600	0.75
1600					3240	14600	15400	16500	0.75
2000					3820	17200	18200	19500	0.75
2500					4450	20600	21800	23300	0.75

 

Yog tias koj txaus siab rau peb cov khoom, thovhu rau peb los yog xa cov lus nug rau peb, peb yuav teb koj li ntawm ib teev.

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