EP 4057302 A1 20220914 - DUAL-STAGE MAGNETIC EXCITATION HIGH-VOLTAGE PROPORTIONAL STANDARD APPARATUS AND ERROR COMPENSATION METHOD
Title (en)
DUAL-STAGE MAGNETIC EXCITATION HIGH-VOLTAGE PROPORTIONAL STANDARD APPARATUS AND ERROR COMPENSATION METHOD
Title (de)
ZWEISTUFIGE PROPORTIONALE HOCHSPANNUNGSSTANDARDVORRICHTUNG MIT MAGNETISCHER ERREGUNG UND FEHLERKOMPENSATIONSVERFAHREN
Title (fr)
APPAREIL STANDARD PROPORTIONNEL HAUTE TENSION D'EXCITATION MAGNÉTIQUE À DEUX ÉTAGES ET PROCÉDÉ DE COMPENSATION DES ERREURS
Publication
Application
Priority
- CN 201911070684 A 20191105
- CN 2019124576 W 20191211
Abstract (en)
Provided are a dual-stage excitation high-voltage ratio standard apparatus and an error compensation method for the apparatus. The apparatus includes a first-stage iron core (C1), a second-stage iron core (C2), a proportional winding (N<sub>1</sub>), a proportional winding (N<sub>2</sub>), an excitation winding (N<sub>1e</sub>), and an excitation winding (N<sub>2e</sub>), where both the first-stage iron core (C1) and second-stage iron core (C2) are rectangular rings, and a rectangular ring of the first-stage iron core (C1) has a greater perimeter than a rectangular ring of the second-stage iron core (C2); the second-stage iron core (C2) is disposed outside the first-stage iron core (C1), and one side of the first-stage iron core (C1) is adjacent to one side of the second-stage iron core (C2); and the excitation winding (N<sub>1e</sub>) and the excitation winding (N<sub>2e</sub>) are wound on a side opposite to the side of the first-stage iron core (C1) adjacent to the second-stage iron core (C2), and the proportional winding (N<sub>1</sub>) and the proportional winding (N<sub>2</sub>) are wound on two adjacent sides of the first-stage iron core (C1) and the second-stage iron core (C2). The apparatus solves the problem that a highest voltage level of an existing dual-stage standard apparatus is low, thereby improving the accuracy of a single-stage standard apparatus at a high voltage.
IPC 8 full level
H01F 27/24 (2006.01); H01F 27/28 (2006.01); H01F 38/26 (2006.01); H01F 41/00 (2006.01)
CPC (source: CN EP)
H01F 3/10 (2013.01 - EP); H01F 27/24 (2013.01 - CN); H01F 27/28 (2013.01 - CN EP); H01F 27/2895 (2013.01 - CN EP); H01F 27/34 (2013.01 - EP); H01F 38/26 (2013.01 - CN EP); H01F 41/00 (2013.01 - CN); H01F 27/245 (2013.01 - EP); H01F 2003/106 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 4057302 A1 20220914; EP 4057302 A4 20240103; CN 110993273 A 20200410; CN 110993273 B 20220415; WO 2021088200 A1 20210514
DOCDB simple family (application)
EP 19951933 A 20191211; CN 201911070684 A 20191105; CN 2019124576 W 20191211