Multipole ground fault circuit interrupter with trip level...

Details Multipole ground fault circuit interrupter with trip level... Multipole ground fault circuit interrupter with trip level...

H - Electricity

02

H

348/24

H02H 3/26 (2006.01)

Patent

CA 1123942

13 48,018 ABSTRACT OF THE DISCLOSURE Multipole ground fault circuit interrupter appar- atus with a compensation network for maintaining a constant trip level despite less than all power poles being ener- gized. The compensation network has matched resistors respectively connected to each power pole and an additional resistor connected to the common point of the matched resistors in a branch passing through the differential current transformer core from the load side to the supply side and connected to the neutral conductor, producing a desensitizing current when less than all poles are ener- gized.

335620

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