MODIFICATIONS OF DIODE RECTIFIER CIRCUITS FOR CONTINUOUS INSULATION MEASUREMENT IN LIVE AC IT NETWORKS

Purpose. In the paper there are described few systems of insulation resistance continuous measurement using an imposed DC test signal delivered by diode rectifiers. Drawbacks of this technique are pointed out and ways of these shortcomings removal are proposed. Methodology. An improved version of m...

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Autor principal:	Piotr Olszowiec
Formato:	article
Lenguaje:	EN RU UK
Publicado:	National Technical University "Kharkiv Polytechnic Institute" 2016
Materias:	low voltage AC IT networks insulation resistance diode rectifier insulation resistance decline alarming earth fault location Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/a65cbd55fee84228943182b8a6aa077d
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spelling	oai:doaj.org-article:a65cbd55fee84228943182b8a6aa077d2021-12-02T17:49:51ZMODIFICATIONS OF DIODE RECTIFIER CIRCUITS FOR CONTINUOUS INSULATION MEASUREMENT IN LIVE AC IT NETWORKS10.20998/2074-272X.2016.2.082074-272X2309-3404https://doaj.org/article/a65cbd55fee84228943182b8a6aa077d2016-05-01T00:00:00Zhttp://eie.khpi.edu.ua/article/view/2074-272X.2016.2.08/64350https://doaj.org/toc/2074-272Xhttps://doaj.org/toc/2309-3404Purpose. In the paper there are described few systems of insulation resistance continuous measurement using an imposed DC test signal delivered by diode rectifiers. Drawbacks of this technique are pointed out and ways of these shortcomings removal are proposed. Methodology. An improved version of measuring circuit based on a single-phase diode rectifier is presented. Application of logometric measuring devices is suggested. Results. A new insulation resistance continuous measuring system is insensitive to network voltages variation and asymmetry. Modified circuit enables also implementation of a simple device for alarming the monitored network’s insulation deterioration and/or earth-fault protection. Originality. Formulas describing performance of diode rectifiers under asymmetrical supply have not been available so far. Both innovations (i.e. single-phase diode rectifier and logometric meter) have not been applied widely for implementation of continuous insulation monitoring in live AC IT networks. Practical value. Use of both innovations will allow to eliminate unrequired dependence of measurement results on variable network voltages as well as their possible asymmetry. Exploitation of diode rectifier circuits for earth fault location is also possible.Piotr OlszowiecNational Technical University "Kharkiv Polytechnic Institute"articlelow voltage AC IT networksinsulation resistancediode rectifierinsulation resistance decline alarmingearth fault locationElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENRUUKElectrical engineering & Electromechanics, Iss 2, Pp 43-46 (2016)
institution	DOAJ
collection	DOAJ
language	EN RU UK
topic	low voltage AC IT networks insulation resistance diode rectifier insulation resistance decline alarming earth fault location Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	low voltage AC IT networks insulation resistance diode rectifier insulation resistance decline alarming earth fault location Electrical engineering. Electronics. Nuclear engineering TK1-9971 Piotr Olszowiec MODIFICATIONS OF DIODE RECTIFIER CIRCUITS FOR CONTINUOUS INSULATION MEASUREMENT IN LIVE AC IT NETWORKS
description	Purpose. In the paper there are described few systems of insulation resistance continuous measurement using an imposed DC test signal delivered by diode rectifiers. Drawbacks of this technique are pointed out and ways of these shortcomings removal are proposed. Methodology. An improved version of measuring circuit based on a single-phase diode rectifier is presented. Application of logometric measuring devices is suggested. Results. A new insulation resistance continuous measuring system is insensitive to network voltages variation and asymmetry. Modified circuit enables also implementation of a simple device for alarming the monitored network’s insulation deterioration and/or earth-fault protection. Originality. Formulas describing performance of diode rectifiers under asymmetrical supply have not been available so far. Both innovations (i.e. single-phase diode rectifier and logometric meter) have not been applied widely for implementation of continuous insulation monitoring in live AC IT networks. Practical value. Use of both innovations will allow to eliminate unrequired dependence of measurement results on variable network voltages as well as their possible asymmetry. Exploitation of diode rectifier circuits for earth fault location is also possible.
format	article
author	Piotr Olszowiec
author_facet	Piotr Olszowiec
author_sort	Piotr Olszowiec
title	MODIFICATIONS OF DIODE RECTIFIER CIRCUITS FOR CONTINUOUS INSULATION MEASUREMENT IN LIVE AC IT NETWORKS
title_short	MODIFICATIONS OF DIODE RECTIFIER CIRCUITS FOR CONTINUOUS INSULATION MEASUREMENT IN LIVE AC IT NETWORKS
title_full	MODIFICATIONS OF DIODE RECTIFIER CIRCUITS FOR CONTINUOUS INSULATION MEASUREMENT IN LIVE AC IT NETWORKS
title_fullStr	MODIFICATIONS OF DIODE RECTIFIER CIRCUITS FOR CONTINUOUS INSULATION MEASUREMENT IN LIVE AC IT NETWORKS
title_full_unstemmed	MODIFICATIONS OF DIODE RECTIFIER CIRCUITS FOR CONTINUOUS INSULATION MEASUREMENT IN LIVE AC IT NETWORKS
title_sort	modifications of diode rectifier circuits for continuous insulation measurement in live ac it networks
publisher	National Technical University "Kharkiv Polytechnic Institute"
publishDate	2016
url	https://doaj.org/article/a65cbd55fee84228943182b8a6aa077d
work_keys_str_mv	AT piotrolszowiec modificationsofdioderectifiercircuitsforcontinuousinsulationmeasurementinliveacitnetworks
_version_	1718379368415232000

MODIFICATIONS OF DIODE RECTIFIER CIRCUITS FOR CONTINUOUS INSULATION MEASUREMENT IN LIVE AC IT NETWORKS

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