公开(公告)号：US10741051B2

公开(公告)日：2020-08-11

申请号：US15353750

申请日：2016-11-17

Applicant: ABB Schweiz AG

Inventor： Marcel Stupak ,  Tomas Kozel ,  Massimo Scarpellini ,  Stefano Magoni

IPC: G01N25/72 ,  G08B21/18 ,  H02B13/065 ,  G01K13/00 ,  G01R31/327 ,  H02B1/04 ,  H02B1/20 ,  H02B1/24 ,  H02B1/06 ,  H02B13/025 ,  H02B13/035 ,  H02B11/12

Abstract: A method for loose joint detection in medium voltage switchgears with busbar joints, circuit breaker upper and lower spouts, and cable connection joints, arranged in an air insulated housing, and medium voltage switchgear itself, in order to create an effective loose joint detection with lower operating expense, but with high performance and accuracy, involves measuring actual temperatures at a first phase as a first temperature (T1), at a second phase as a second temperature (T2), at a third phase as a third temperature (T3), at predefined critical points, such as at the busbar joints, and/or at the circuit breaker upper spouts, and/or at the circuit breaker lower spouts, and/or the cable connection; and comparing temperatures in a logical dependency Ti>(Tj+dT), with i≠j, permuted with i from 1, 2, 3, and j from 1, 2, 3, and setting the alarm if the logical dependency is fulfilled.

公开(公告)号：USD858323S1

公开(公告)日：2019-09-03

申请号：US29644415

申请日：2018-04-17

Applicant: ABB Schweiz AG

Designer： Callisto Gatti ,  Giorgio Magno ,  Stefano Magoni

公开(公告)号：US20180375304A1

公开(公告)日：2018-12-27

申请号：US15983836

申请日：2018-05-18

Applicant: ABB Schweiz AG

Inventor： Giorgio Magno ,  Stefano Magoni

IPC: H02B3/00 ,  F16H25/20 ,  H02B11/127

Abstract: A motorized drive (1) for racking operations in a medium voltage switchgear comprising a main drive shaft (2) actuated by a drive motor (3) and adapted to be operatively coupled to a truck in said medium voltage switchgear characterized in that it comprises a replicating device (10) which replicates the stroke of said truck during rack-in or rack out operations in said switchgear.