公开(公告)号：EP3385970B1

公开(公告)日：2020-06-03

申请号：EP17165582.2

申请日：2017-04-07

Applicant: ABB Schweiz AG

Inventor： MANTILLA FLOREZ, Javier ,  COSSALTER, Oliver ,  STENGÅRD, Peter

IPC: H01H33/22 ,  G01N21/35 ,  H01H33/56 ,  H02B13/055 ,  H01B3/56

公开(公告)号：EP3385970A1

公开(公告)日：2018-10-10

申请号：EP17165582.2

申请日：2017-04-07

Applicant: ABB Schweiz AG

Inventor： MANTILLA FLOREZ, Javier ,  COSSALTER, Oliver ,  STENGÅRD, Peter

IPC: H01H33/22 ,  G01N21/35 ,  H01H33/56 ,  H02B13/055

Abstract: An apparatus (1) for heating an insulation fluid (10) in a medium-voltage or high-voltage switchgear (100) comprises an infrared source (3) which is adapted to emit infrared radiation (4) of at least one wavelength. Thus, at least one vibrational or rotational mode of at least one component (11) of the insulation fluid (10) is excited by absorption of at least a part of the infrared radiation (4), and condensation of the insulation fluid (10) is efficiently prevented by this direct heating of the insulation fluid (10). A closed loop temperature regulator (5) is used to heat only when required. A circulator (7) in a heating chamber (8) further provides for a mixing of the insulation fluid (10), thus preventing steep temperature gradients.