(19)
(11) EP 1 646 880 A2

(12)

(88) Date of publication A3:
14.07.2005

(43) Date of publication:
19.04.2006 Bulletin 2006/16

(21) Application number: 04778480.6

(22) Date of filing: 16.07.2004
(51) International Patent Classification (IPC): 
G01R 21/00(1968.09)
(86) International application number:
PCT/US2004/023006
(87) International publication number:
WO 2005/008181 (27.01.2005 Gazette 2005/04)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

(30) Priority: 18.07.2003 US 488700 P
18.03.2004 US 554188 P
11.05.2004 WO PCT/CA20/04000705

(71) Applicant: Power Measurement Ltd
British Columbia V8M 2A5 (CA)

(72) Inventors:
  • FORTH, Bradford, J.
    Victoria, British Columbia V8S 2H9 (CA)
  • CUMMING, Daniel, A.
    Sidney, British Columbia V8L 2E7 (CA)
  • LIGHTBODY, Simon, H.
    Victoria, British Columbia V8Z 5T9 (CA)

(74) Representative: Pfau, Anton Konrad et al
Grünecker, Kinkeldey, Stockmair & Schwannhäusser Anwaltssozietät Maximilianstrasse 58
80538 München
80538 München (DE)

   


(54) METHODS AND APPARATUS FOR MONITORING POWER FLOW IN A CONDUCTOR