(19)
(11) EP 1 428 303 A2

(12)

(88) Date of publication A3:
01.04.2004

(43) Date of publication:
16.06.2004 Bulletin 2004/25

(21) Application number: 01990886.2

(22) Date of filing: 09.11.2001
(51) International Patent Classification (IPC)7: H02H 3/00
(86) International application number:
PCT/US2001/046929
(87) International publication number:
WO 2002/039561 (16.05.2002 Gazette 2002/20)
(84) Designated Contracting States:
AT BE CH CY DE ES FR GB IT LI

(30) Priority: 13.11.2000 US 248162 P

(71) Applicant: EATON CORPORATION
Cleveland,Ohio 44114-2584 (US)

(72) Inventors:
  • ZUERCHER, Joseph, C., c/o Patent Law Dept
    Cleveland, OH 4114-2584 (US)
  • HASTINGS, Jerome, Kenneth
    Sussex, WI 53089 (US)
  • HETZMANNSEDER, Engelbert
    Cleveland, Ohio 44114-2584 (US)
  • PARDEE, John, Blair
    Franklin, WI 53132 (US)
  • TENNIES, Charles, Joseph
    Waukesha, WI 53188 (US)

(74) Representative: Wagner, Karl H., Dipl.-Ing. 
Wagner & Geyer,Patentanwälte,Gewürzmühlstrasse 5
80538 München
80538 München (DE)

   


(54) DETECTION OF ARCING IN DC ELECTRICAL SYSTEMS