(19)

(11)

EP 1 252 638 A1

(12)

(43) Date of publication: 30.10.2002 Bulletin 2002/44 (21) Application number: 00990665.2 (22) Date of filing: 30.11.2000

(51) International Patent Classification (IPC)7: H01H 31/16, H02B 13/035 (86) International application number: PCT/EP0012/313 (87) International publication number: WO 0105/0487 (12.07.2001 Gazette 2001/28)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 31.12.1999 IT MI992769 (71) Applicant: ABB Service S.r.l. 20135 Milano (IT)	(72) Inventor: PIAZZA, Costante I-26900 Lodi (IT) (74) Representative: Giavarini, Francesco  GIAVARINI E ASSOCIATI S.R.L.Via XX Settembre, 58/A 24122 Bergamo 24122 Bergamo (IT)