Patent · US Active

Insulation fluid heating apparatus and method

US10999897B2 · kind B2 · utility

1Cited by

6References

20Claims

0Family size

Assignee

ABB Power Grids Switzerland AG · CH

Inventors

Javier Mantilla · Baden, CH
Oliver Cossalter · Fislisbach, CH
Peter Stengard · Ludvika, SE

Key dates

Filing date	Apr 9, 2018
Grant date	May 4, 2021
Priority date	—
Expiry date	May 17, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2033/566
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

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

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.