EN IEC 60127-8:2018/A1:2024

SLOVENSKI STANDARD
SIST EN IEC 60127-8:2019/oprA1:2024
01-januar-2024
Miniaturne varovalke - 8. del: Varovalčni upori s posebno nadtokovno zaščito
Miniature fuses - Part 8: Fuse resistors with particular overcurrent protection
Geräteschutzsicherungen - Teil 8: Sicherungswiderstände für Teilbereichsschutz
Coupe-circuit miniatures - Partie 8: Résistances de protection avec protection
particulière contre les surintensités
Ta slovenski standard je istoveten z: EN IEC 60127-8:2018/prA1:2023
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
SIST EN IEC 60127-8:2019/oprA1:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN IEC 60127-8:2019/oprA1:2024

SIST EN IEC 60127-8:2019/oprA1:2024
32C/625/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60127-8/AMD1 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-11-24 2024-02-16
SUPERSEDES DOCUMENTS:
32C/593/CD, 32C/597A/CC
IEC SC 32C : MINIATURE FUSES
SECRETARIAT: SECRETARY:
China Mr Jun Cai
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
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This document is still under study and subject to change. It should not be used for reference purposes.
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Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Miniature fuses - Part 8: Fuse resistors with particular overcurrent protection

PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
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SIST EN IEC 60127-8:2019/oprA1:2024
IEC CD 60127-8/Ed1/A1© IEC2020         2                    32C/625/CDV

Amendment 1 to IEC 60127-8 Ed.1.0 Miniature fuses - Part 8: Fuse
resistors with particular overcurrent protection

Page 6
INTRODUCTION
Replace the existing third paragraph of INTRODUCTION with the following new paragraph:
Fuse resistors with particular overcurrent protection can safely interrupt short-circuit currents,
but are not capable of interrupting overload currents.

Page 7
1 Scope
Replace the existing 7th paragraph with the following paragraph:
Fuse Manufacturers of fuse resistors with particular overcurrent protection shall ensure on their
own responsibility that their products comply with the requirements of the resistor-related
standards IEC 60115-1, IEC 60115-4-101 and IEC 60115-4-102 with exceptions of 3.5 and 3.8.
Add the following new paragraph in front of the existing last paragraph:
Fuse resistors with particular overcurrent protection are not intended to be replaced by the end-
user of an electrical / electronic appliance.

Page 8
Replace the existing first paragraph with the following paragraph:
For the purposes of this document, the terms and definitions given in Clause 3 of IEC 60127-1:2006
as well as resistor-related standards IEC 60115-1, IEC 60115-4-101 and IEC 60115-4-102 with
exceptions of 3.5 and 3.8. Together with the following definitions apply.

3.28
fuse resistor with particular overcurrent protection
Replace the existing Note 1 to entry with the following new Note 1 to entry:
Note 1 to entry: Fuse resistors with particular overcurrent protection can safely interrupt short-circuit currents, but
are not capable of interrupting overload currents. They are therefore allowed to be used only in combination with an
accompanying overload current protection device such as a miniature fuse according to parts 2, 3, 4 and 7, if overload
currents cannot be excluded to occur in the respective application.

Page 9
3.5
SIST EN IEC 60127-8:2019/oprA1:2024
IEC CD 60127-8/Ed1/A1© IEC2020         3                    32C/625/CDV
critical resistance
Replace the existing Note 1 to entry with the following new Note 1 to entry:
Note 1 to entry: At an ambient temperature of (23±1) °C the maximum voltage which may be applied across the
terminations of a fuse resistor with particular overcurrent protection is either the calculated rated voltage, if the
resistance is less than the critical resistance, or the limiting element voltage, if the resistance is equal to or greater
than the critical resistance. At temperatures other than (23± 1) °C it is important that account be taken of the derating
curve and of the limiting element voltage in the calculation of any voltage to be applied.

Page 9
Delete the term and definition of the existing clause 3.8, rated dissipation, P70.

Page 10
3.9
rated temperature
Replace the e
...