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(11)    Patent No :    AP 2125    (73) Applicant(s)       
(21)    Application No :    AP/P/2007/003983    HANSER Volker Werner, Zollstrasse 2, Kehl, 77694,       
            Germany       
                   
(22)    Filing Date :    06.10.2005           
(24)    Date of Grant &    17.05.2010           
                   
(45)    Publication :

(30)    Priority Data                    (72) Inventors   
    (33) Country    (31) Number    (32) Date    HANSER Volker Werner, Germany   
    DE            102004048793.6 07.10.2004           
    DE            102005041975.5 03.09.2005    (74) Representative   
(84)    Designated State                   
    BW    GM    GH    KE    LS    MW    MZ   NA   SL    COGHLAN, WELSH & GUEST   
    SD    SZ    T Z    UG    ZM    ZW        ZIMBABWE       
                                       
(51)    International    Classification    H01F30/16 (2006.01)    H01F27/06 (2006.01)   
                            H01F30/12 (2006.01)       
(54)    Title

Toroidal core transformer

(57)    Abstract

A polyphase transformer (101) having a number of toroidal cores (102) arranged adjacent to one another in an axial direction is provided. The toroidal cores (102) support phase windings of different phases. The connecting points pf the phase windings of tow adjacent toroidal cores (102) are offset from one another in a peripheral direction. This offset, i.e., the geometric angle between the connecting points of the phase windings of the two adjacent toroidal cores (102), approximately corresponds to a phase shift,

i.e., to the electric phase angle between the voltage signals of the toroidal cores (102).

(56)    Documents Cited :    EP 557 549 A   US 2 832 012 A

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