EN 60644:2009/A1:2019

Specification for high-voltage fuse-links for motor circuit applications

Anforderungen für Hochspannungs-Sicherungseinsätze für Motorstromkreise

Spécification relative aux éléments de remplacement à haute tension destinés à des circuits comprenant des moteurs

Specifikacija visokonapetostnih taljivih vložkov za zaščito električnih motorjev (IEC 60644:2009/A1:2019)

General Information

• Status: Published
• Publication Date: 21-Nov-2019
• Withdrawal Date: 27-Oct-2022
• ICS: 29.120.50 - Fuses and other overcurrent protection devices
• Technical Committee: CLC/SR 32A - High-voltage fuses
• Drafting Committee: IEC/SC 32A - IEC_SC_32A
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 22-Nov-2019
• Completion Date: 22-Nov-2019
• Ref Project: SIST EN 60644:2010/A1:2020 - Specification for high-voltage fuse-links for motor circuit applications (IEC 60644:2009/A1:2019)

Relations

• Amends: EN 60644:2009 - Specification for high-voltage fuse-links for motor circuit application
• Effective Date: 12-Dec-2017

Overview

EN 60644:2009/A1:2019 is a European standard established by CLC, based on IEC 60644:2009/A1:2019, specifying requirements for high-voltage fuse-links designed for motor circuit applications. This standard targets fuse-links compliant with IEC 60282-1 and used specifically with motors powered by alternating current systems at 50 Hz and 60 Hz frequency. It focuses on standardizing time-current characteristics and pulse withstand specifications to ensure reliability and safety under normal service conditions, including motor starting pulses.

Key Topics

• Scope and Application
  EN 60644:2009/A1:2019 applies to fuse-links that protect electric motors started direct-on-line or with assisted starting, provided appropriate fuse rating selection is made. It ensures fuse-links can handle the electrical stresses caused by normal motor operation and startup.

• Time-Current Characteristics
  The standard defines the time-current curves for fuse-links using specific equations. These equations ensure fuse-links respond predictably under different current ratings and short-time conditions to protect motor circuits effectively.

• Pulse Withstand Requirements
  Fuse-links must meet pulse withstand testing criteria that simulate motor starting pulses, helping prevent nuisance blowing and ensuring selective motor protection.

• Normative References
  The document references related standards, primarily IEC 60282-1 for current-limiting high-voltage fuses, and IEC TR 62655:2013, a tutorial and application guide for high-voltage fuses.

• Fuse-Link Selection
  The standard advises referring to IEC TR 62655:2013 for detailed guidelines on proper fuse-link selection and matching fuse characteristics with other motor circuit components to optimize protection.

Applications

EN 60644:2009/A1:2019 is crucial for industries and professionals involved in designing, manufacturing, and maintaining electric motor protection systems, particularly where high-voltage motors are employed. Its practical applications include:

• Electric Motor Protection
  Ensuring motors are safeguarded from overcurrent and short circuits during both start-up and normal operation phases.

• Motor Circuit Design
  Assisting engineers in selecting the appropriate fuse-links that meet the required electrical and thermal stresses to maximize motor life and system reliability.

• Preventive Maintenance and Safety Compliance
  Providing standardized testing and performance criteria to help organizations comply with safety regulations and reduce electrical failures.

• Manufacturing of High-Voltage Fuses
  Serving as a reference for fuse manufacturers to design products tailored for motor circuits in compliance with international and European standards.

Related Standards

• IEC 60282-1:2009 – High-voltage fuses - Part 1: Current-limiting fuses
  This standard specifies the construction and performance of current-limiting high-voltage fuses, forming the basis for fuse-links described in EN 60644.

• IEC TR 62655:2013 – Tutorial and application guide for high-voltage fuses
  Provides comprehensive guidance on application aspects, selection, and coordination of high-voltage fuse-links, referenced extensively in EN 60644 for motor circuit use.

• IEC 60262-1:2009/Amd1:2014 – Additional requirements referenced for fuse hardware characteristics.

Benefits of Compliance

• Standardization and Uniformity: Harmonized specifications for fuse-links ensure compatibility and interchangeability across different manufacturers and applications in Europe and worldwide.

• Enhanced Motor Protection: Correctly specified fuse-links according to EN 60644 minimize the risk of motor damage caused by electrical faults and overloads.

• Improved System Reliability: By meeting standardized pulse withstand and time-current characteristics, fuse-links provide dependable protection, reducing downtime and maintenance costs.

• Regulatory Alignment: Adherence to EN 60644 facilitates compliance with European electrotechnical directives and industry best practices.

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By following the EN 60644:2009/A1:2019 standard, electrical engineers, manufacturers, and maintenance teams can ensure reliable and safe operation of motor circuits employing high-voltage fuse-links, contributing to the overall resilience and efficiency of electrical power systems.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2020
Specifikacija visokonapetostnih taljivih vložkov za zaščito električnih motorjev
(IEC 60644:2009/A1:2019)
Specification for high-voltage fuse-links for motor circuit applications (IEC
60644:2009/A1:2019)
Anforderungen für Hochspannungs-Sicherungseinsätze für Motorstromkreise (IEC
60644:2009/A1:2019)
Spécification relative aux éléments de remplacement à haute tension destinés à des
circuits comprenant des moteurs (IEC 60644:2009/A1:2019)
Ta slovenski standard je istoveten z: EN 60644:2009/A1:2019
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60644:2009/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2019
ICS 29.120.50
English Version
Specification for high-voltage fuse-links for motor circuit
applications
(IEC 60644:2009/A1:2019)
Spécification relative aux éléments de remplacement à Anforderungen für Hochspannungs-Sicherungseinsätze für
haute tension destinés à des circuits comprenant des Motorstromkreise
moteurs (IEC 60644:2009/A1:2019)
(IEC 60644:2009/A1:2019)
This amendment A1 modifies the European Standard EN 60644:2009; it was approved by CENELEC on 28 October 2019. CEN and
CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
amendment the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CEN and CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CEN and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and United Kingdom

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 All rights of exploitation in any form and by any means reserved worldwide for CEN national Members and for
CEN/CENELEC CENELEC Members.
Ref. No. EN 60644:2009/A1:2019 E

European foreword
The text of document 32A/340/CDV, future IEC 60644/A1, prepared by SC 32A "High-voltage fuses"
of IEC/TC 32 "Fuses" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC
as EN 60644:2009/A1:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-07-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-10-28
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 60644:2009/A1:2019 was approved by CENELEC as a
European Standard without any modification.

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
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