Global Patent Index - EP 1037220 A2

EP 1037220 A2 2000-09-20 - Transformer and method of cooling a transformer

Title (en)

Transformer and method of cooling a transformer

Title (de)

Transformator und Verfahren zur Kühlung eines Transformators

Title (fr)

Transformateur et procédé de refroidissement d'un transformateur

Publication

EP 1037220 A2 (DE)

Application

EP 00250096 A

Priority

DE 19912280 A

Abstract (en)

A cast resin transformer (4) includes three sets of windings (1- 3) arranged in series and adjacent to one another. Of the three winding sets only the second winding set (2) has a cooling element (18,34). The second set of windings (2) includes a first winding (13) enclosed by a second winding (10) with provision for an inter- space (16) for accommodating the cooling element (18,34), which is specifically designed as a cooling cylinder (18), which contains a plastics material, or is completely made of plastics material or more specifically contains a metal.

Abstract (de)

Die Erfindung betrifft einen Transformator (4) mit einer ersten (1), einer zweiten (2) und einer dritten Wicklungskombination (3), die jeweils stehend und in aufsteigender Zählung nebeneinander in einer Reihe angeordnet sind und jeweils ein Kühlelement (18,34) aufweisen. Es wird davon ausgegangen, daß die zweite Wicklungskombination (2) bei Beaufschlagung mit einer gleichen elektrischen Normalleistung einer höheren thermischen Belastung ausgesetzt ist, als eine der anderen Wicklungskombinationen (1,2). Um dennoch mit geringerem Aufwand eine ausreichende Kühlung der Wicklungskombinationen (1, 2, 3) zu erreichen, ist vorgesehen, daß bei der ersten Wicklungskombination (1) und/oder der dritten Wicklungskombination (3) das Kühlelement (18, 34) weggelassen ist. Gemäß dem Verfahren zur Kühlung eines Transformators (4) ist vorgesehen, daß die thermisch am höchsten belastete Wicklungskombination (2) mit einer höheren Kühlleistung gekühlt wird als eine thermisch geringer belastete Wicklungskombination (3. <IMAGE>

IPC 1-7 (main, further and additional classification)

H01F 27/08

IPC 8 full level (invention and additional information)

H01F 27/08 (2006.01)

CPC (invention and additional information)

H01F 27/085 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19912280 C1 20000914; AT 394781 T 20080515; BR 0001264 A 20001031; DE 50015139 D1 20080619; EP 1037220 A2 20000920; EP 1037220 A3 20010822; EP 1037220 B1 20080507; ES 2302680 T3 20080801; PT 1037220 E 20080729

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