US 12,437,916 B2
Single package, dual current transformer for load and residual current measurement
Kevin R. Ferguson, Dublin, OH (US)
Assigned to VERTIV CORPORATION, Westerville, OH (US)
Filed by VERTIV CORPORATION, Columbus, OH (US)
Filed on Oct. 25, 2022, as Appl. No. 17/972,876.
Claims priority of provisional application 63/271,981, filed on Oct. 26, 2021.
Prior Publication US 2023/0127478 A1, Apr. 27, 2023
Int. Cl. G01R 19/00 (2006.01); H01F 27/02 (2006.01); H01F 38/30 (2006.01)
CPC H01F 38/30 (2013.01) [G01R 19/0092 (2013.01); H01F 27/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a housing defining:
a first port configured to accept a first conductor; and
a second port configured to accept a second conductor;
a first toroidal core disposed within the housing and configured to encircle the first port and the first conductor, the first toroidal core configured to facilitate measurement of a load current; and
a second toroidal core disposed within the housing and adjacent to the first toroidal core configured to encircle the first port and the second port and thereby further encircle the first conductor and the second conductor, the second toroidal core configured to facilitate measurement of a residual current of a voltage direct current (VDC) circuit, the housing at least partially enclosing the first toroidal core and the second toroidal core.