US 11,892,474 B2
Universal measurement input for connecting a small signal transformer and electrical device with such a measurement input
Andreas Jurisch, Schwante (DE); and Stefan Werben, Lauf a.d.P. (DE)
Assigned to Siemens Aktiengesellschaft, Munich (DE)
Filed by Siemens Aktiengesellschaft, Munich (DE)
Filed on May 6, 2022, as Appl. No. 17/738,266.
Claims priority of application No. 21172444 (EP), filed on May 6, 2021.
Prior Publication US 2022/0357365 A1, Nov. 10, 2022
Int. Cl. G01R 15/18 (2006.01)
CPC G01R 15/181 (2013.01) 14 Claims
OG exemplary drawing
 
1. A measurement input for connecting a small signal transformer to an electrical device, the measurement input comprising:
an electrical input for connecting a connection line of the small signal transformer;
an electrical output for outputting a measurement signal to the electrical device; and
a correction element having a digital filter with a filter transfer function adapted to the small signal transformer;
the filter transfer function of the correction element being defined by a parameter set, the parameter set configured to be variably preset specifically for the small signal transformer, and the parameter set configured to be preset specifically for different types of small signal transformers for current measurement and for voltage measurement.