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EN 60990:1999

(Main)

Methods of measurement of touch current and protective conductor current

Methods of measurement of touch current and protective conductor current

Defines measurement methods for d.c. or a.c. of sinusoidal or non-sinusoidal waveform, which could flow through the human body, and current flowing through a protective conductor. The measuring methods recommended for TOUCH CURRENT are based upon the possible effects of current flowing through a human body. In this standard, measurements of current through networks representing the impedance of the human body are referred to as measurements of TOUCH CURRENT. These networks are not necessarily valid for the bodies of animals. The basic safety publication is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51. It is not intended for use by manufacturers or certification bodies. It has the status of a basic safety publication in accordance with IEC Guide 104.

Verfahren zur Messung von Berührungsstrom und Schutzleiterstrom

Méthodes de mesure du courant de contact et du courant dans le conducteur de protection

Définit des méthodes de mesure pour les courants continus ou les courants alternatifs de forme sinusoïdale ou non sinusoïdale qui peuvent traverser le corps humain, et les courants qui peuvent circuler dans un conducteur de protection. Les méthodes de mesure recommandées pour le COURANT DE CONTACT sont basées sur les effets possibles provoqués par le passage du courant dans le corps humain. Dans cette norme, les mesures de courant à travers des réseaux représentant l'impédance du corps humain sont appelées mesures du COURANT DE CONTACT. Les réseaux utilisés ne sont pas nécessairement valables pour des animaux. La présente publication fondamentale de sécurité est destinée principalement à être utilisée par les comités techniques lors de la préparation de normes conformément aux principes figurant dans le Guide 104 et le Guide ISO/CEI 51. Elle n'est pas destinée à être utilisée par les fabricants ou les organismes de certification. Elle a le statut d'une publication fondamentale de sécurité conformément au Guide CEI 104.

Methods of measurement of touch current and protective conductor current

General Information

Status
Withdrawn
Publication Date
24-Oct-1999
Withdrawal Date
30-Sep-2002
ICS
17.220 - Electricity. Magnetism. Electrical and magnetic measurements
35.020 - Information technology (IT) in general
Technical Committee
CLC/TC 108X - Safety of electronic equipment within the fields of Audio/Video, Information Technology and Communication Technology
Drafting Committee
IEC/TC 108 - IEC_TC_108
Parallel Committee
IEC/TC 108 - IEC_TC_108
Current Stage
9960 - Withdrawal effective - Withdrawal
Start Date
04-Jul-2019
Completion Date
04-Jul-2019
Ref Project
SIST EN 60990:2002 - Methods of measurement of touch current and protective conductor current

Relations

Replaced By
EN 60990:2016 - Methods of measurement of touch current and protective conductor current
Effective Date
27-Jan-2023

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Standards Content (Sample)


SLOVENSKI STANDARD
01-september-2002
Methods of measurement of touch current and protective conductor current
Methods of measurement of touch current and protective conductor current
Verfahren zur Messung von Berührungsstrom und Schutzleiterstrom
Méthodes de mesure du courant de contact et du courant dans le conducteur de
protection
Ta slovenski standard je istoveten z: EN 60990:1999
ICS:
13.260 9DUVWYRSUHGHOHNWULþQLP Protection against electric
XGDURP'HORSRGQDSHWRVWMR shock. Live working
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
...

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IEC 60990:2016 is available as IEC 60990:2016 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60990:2016 defines measurement methods for d.c. or a.c. current of sinusoidal or non-sinusoidal waveform, which could flow through the human body, and current flowing through a protective conductor. The measuring methods recommended for TOUCH CURRENT are based upon the possible effects of current flowing through a human body. In this standard, measurements of current through networks representing the impedance of the human body are referred to as measurements of TOUCH CURRENT. These networks are not necessarily valid for the bodies of animals. The specification or implication of specific limit values is not within the scope of this standard. IEC TS 60479 series provides information regarding the effects of current passing through the human body from which limit values may be derived. This standard is applicable to all classes of EQUIPMENT, according to IEC 61140. The methods of measurement in this standard are not intended to be used for TOUCH CURRENTS having less than 1 s duration, patient currents as defined in IEC 60601-1, a.c. at frequencies below 15 Hz, and currents above those chosen for ELECTRIC BURN limits. This third edition cancels and replaces the second edition published in 1999. It constitutes a technical revision. The principal changes in this edition as compared with the second edition are as follows: - the effects names have been updated to reflect increased understanding of the range of effects and is in concert with present usage; - the conditions of use invoking a GRIPPABLE PART have been reduced in the application of the requirements based upon the current understanding of this effect; - the references to ISO 10012-1, which has been replaced by management standard of the same number, have been replaced with explanatory text, where needed to maintain the sense of the document; - former informative Annex H (GRIPPABLE PART) has been deleted from this update as it does not properly represent the full set of conditions under which immobilization can occur. A new informative Annex H (Analysis of frequency filtered touch current circuits measurement) has been added and the Bibliography (formerly Annex M) has been updated with additional references for completeness. This basic safety publication is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51. It is not intended for use by manufacturers or certification bodies independent of product standards. Key words: Touch Current, Protective Conductor Current, Current Flow

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