(19)

(11)

EP 1 046 042 A2

(12)

(88) Date of publication A3: 03.02.2000 (43) Date of publication: 25.10.2000 Bulletin 2000/43 (21) Application number: 99902147.0 (22) Date of filing: 08.01.1999

(51) International Patent Classification (IPC)7: G01R 1/00 (86) International application number: PCT/US9900/510 (87) International publication number: WO 9935/506 (15.07.1999 Gazette 1999/28)

(84) Designated Contracting States: CH DE FI FR GB LI SE Designated Extension States: SI (30) Priority: 09.01.1998 US 70946 P (71) Applicant: Siemens Power Transmission & Distribution, Inc. Wendel, NC 27591 (US)	(72) Inventors: SLATER, Byron, J. Lafayette, IN 47905 (US) VOISINE, John, T. Lafayette, IN 47905 (US) (74) Representative: Mackett, Margaret Dawn et al Siemens Group Services Limited,Intellectual Property Department,Siemens House,Oldbury Bracknell,Berkshire RG12 8FZ Bracknell,Berkshire RG12 8FZ (GB)