CENELEC
Project
| Reference | EN 60947-7-3:2009 |
|---|---|
| Title | Low-voltage switchgear and controlgear - Part 7-3: Ancillary equipment - Safety requirements for fuse terminal blocks |
| Project Number | 21334 |
| Abstract/Scope | IEC 60947-7-3:2009 applies to fuse terminal blocks with screw-type or screwless-type clamping units for the connection of rigid (solid or stranded) or flexible copper conductors for the reception of cartridge fuse-links in accordance with IEC 60127-2, intended primarily for industrial or similar use in circuits not exceeding 1 000 V a.c., up to 1 000 Hz or 1 500 V d.c., and having a maximum short-circuit breaking capacity of 1 500 A. They are intended for installation in electrical equipment with enclosures which surround the fuse terminal blocks to such an extent that they are accessible only with the aid of a tool. For certain applications, for example in control circuits, the fuse terminal blocks may be designed exclusively for short-circuit protection. The object of this standard is to specify safety requirements and test methods for the mechanical, electrical and thermal characteristics of fuse terminal blocks, to ensure the compatibility between terminal blocks and standardized fuse-links. This standard may be used as a guide for - fuse terminal blocks requiring the fixing of special devices to the conductors, for example quick connect terminations or wrapped connections, etc.; - fuse terminal blocks providing direct contact to the conductors by means of edges or points penetrating the insulation, for example insulation displacement connections, etc. Where applicable in this standard, the term 'clamping unit' has been used instead of the term 'terminal'. This is taken into account in case of reference to IEC 60947-1. The main technical modifications of this standard since this previous publication are listed below: - requirements regarding clearances and creepage distances replaced by reference to Annex H of IEC 60947-1; - requirements for the test of the mechanical strength of the clamping units improved in 8.3.3.1; - requirements for tightening torques for the tests improved and referenced to Table 4 of IEC 60947-1; - requirements for the resistance and the dimensions of dummy fuse-links specified in 8.5.2.5. This publication shall be read in conjunction with IEC 60947-1:2007 and IEC 60947-7-1:2009. |
| Status |
Published
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Status
| Current Stage code | 6060 |
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| Current Stage code date | 2009-11-27 |
| Current Stage code deadline | 2010-06-01 |
| Deadline date for vote |
Legal
| Directive(s) | LVD (2006/95/EC) |
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| Mandate(s) | |
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Details
| IEC Technical Body | IEC/SC 17B |
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| Reference Document | IEC 60947-7-3:2009 (EQV) |
| ICS | 29.120.99 - Other electrical accessories 29.130.20 - Low voltage switchgear and controlgear |
| Keywords | Low-voltage; Switchgear; Controlgear; Ancillary equipment; Terminal block |
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Information
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History
Implementation Dates
| date of Ratification (DOR) (1) | 2009-09-01 |
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| date of Availability (DAV) (2) | 2009-11-27 |
| date of Announcement (DOA) (3) | 2009-12-01 |
| date of Publication (DOP) (4) | 2010-06-01 |
| date of Withdrawal (DOW) (5) | 2012-09-01 |
Relations
| Supersedes | EN 60947-7-3:2002 |
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| Superseded by | |
| Normative reference (6) | ISO 3:1973 ISO 4046-4:2002 EN 60127-1:2006 EN 60127-2:2003 A1:2003 EN 60216-1:2001 EN 60695-11-5:2005 EN 60947-1:2007 EN 60947-7-1:2009 |
(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved
(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat
(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level
(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement
(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn
(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.
