IEC 60670-24:2024
Collections
International IEC standards
Publication date
December 2024
Number of pages
92 p.
Reference
IEC 60670-24:2024
IEC 60670-24:2024
December 2024
International standard
Current
Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 24: Particular requirements for enclosures for housing protective devices and other power dissipating electrical equipment
IEC 60670-24:2024 applies to enclosures and parts of them for housing protective devices and other power dissipating electrical equipment intended to be used with a rated voltage not exceeding 400 V and a total incoming load current not exceeding 125 A for household and similar fixed electrical installations. These enclosures are intended to be installed in locations where unskilled persons have access. They are intended to be equipped with electrical equipment by skilled persons (installers). These enclosures are intended to be installed where the prospective short circuit current does not exceed 10 kA unless they are protected by current limiting protective devices with a cut-off current not exceeding 17 kA. Enclosures complying with this document are suitable for use at ambient temperature not normally exceeding 40 °C, but their average temperature over a period of 24 h does not exceed 35 °C, with a lower limit of the ambient air temperature of ?5 °C. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision.This edition includes the following significant technical changes with respect to the previous edition:a) revision of requirements for protection against electric shock in Clause 10;b) addition of requirements for functional earthing in 11.101;c) revision of the requirements for fixing of flush type and semi-flush type enclosures in 12.12;d) revision of the requirements for resistance of insulating material to abnormal heat and to fire in Clause 18;e) addition of calculations to take into account the power loss of electronic devices in Clause AA.6;f) addition of tests and requirements for enclosures exposed to direct sunlight with the related Annex CC;g) addition of tests and requirements for enclosures with separate area to accommodate multimedia-equipment with the related Annex DD;h) addition of tests and requirements for enclosures used with connected devices or equipment with the related Annex EE.
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Sumary
Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 24: Particular requirements for enclosures for housing protective devices and other power dissipating electrical equipment
IEC 60670-24:2024 applies to enclosures and parts of them for housing protective devices and other power dissipating electrical equipment intended to be used with a rated voltage not exceeding 400 V and a total incoming load current not exceeding 125 A for household and similar fixed electrical installations. These enclosures are intended to be installed in locations where unskilled persons have access. They are intended to be equipped with electrical equipment by skilled persons (installers). These enclosures are intended to be installed where the prospective short circuit current does not exceed 10 kA unless they are protected by current limiting protective devices with a cut-off current not exceeding 17 kA. Enclosures complying with this document are suitable for use at ambient temperature not normally exceeding 40 °C, but their average temperature over a period of 24 h does not exceed 35 °C, with a lower limit of the ambient air temperature of ?5 °C. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) revision of requirements for protection against electric shock in Clause 10;
b) addition of requirements for functional earthing in 11.101;
c) revision of the requirements for fixing of flush type and semi-flush type enclosures in 12.12;
d) revision of the requirements for resistance of insulating material to abnormal heat and to fire in Clause 18;
e) addition of calculations to take into account the power loss of electronic devices in Clause AA.6;
f) addition of tests and requirements for enclosures exposed to direct sunlight with the related Annex CC;
g) addition of tests and requirements for enclosures with separate area to accommodate multimedia-equipment with the related Annex DD;
h) addition of tests and requirements for enclosures used with connected devices or equipment with the related Annex EE.
IEC 60670-24:2024 applies to enclosures and parts of them for housing protective devices and other power dissipating electrical equipment intended to be used with a rated voltage not exceeding 400 V and a total incoming load current not exceeding 125 A for household and similar fixed electrical installations. These enclosures are intended to be installed in locations where unskilled persons have access. They are intended to be equipped with electrical equipment by skilled persons (installers). These enclosures are intended to be installed where the prospective short circuit current does not exceed 10 kA unless they are protected by current limiting protective devices with a cut-off current not exceeding 17 kA. Enclosures complying with this document are suitable for use at ambient temperature not normally exceeding 40 °C, but their average temperature over a period of 24 h does not exceed 35 °C, with a lower limit of the ambient air temperature of ?5 °C. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) revision of requirements for protection against electric shock in Clause 10;
b) addition of requirements for functional earthing in 11.101;
c) revision of the requirements for fixing of flush type and semi-flush type enclosures in 12.12;
d) revision of the requirements for resistance of insulating material to abnormal heat and to fire in Clause 18;
e) addition of calculations to take into account the power loss of electronic devices in Clause AA.6;
f) addition of tests and requirements for enclosures exposed to direct sunlight with the related Annex CC;
g) addition of tests and requirements for enclosures with separate area to accommodate multimedia-equipment with the related Annex DD;
h) addition of tests and requirements for enclosures used with connected devices or equipment with the related Annex EE.
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Replaced standards
(1)
IEC 60670-24:2011
March 2011
International standard
Cancelled
Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 24: Particular requirements for enclosures for housing protective devices and other power dissipating electrical equipment
IEC 60670-24:2011 applies to enclosures and parts of them for housing protective devices and other power dissipating electrical equipment intended to be used with a rated voltage not exceeding 400 V and a total incoming load current not exceeding 125 A for household and similar fixed electrical installations. This second edition cancels and replaces the first edition published in 2005 and constitutes a technical revision. The following major changes from the first edition are introduced: - new definition for basic, general purpose enclosures (GP enclosure) and enclosures for pre-determined equipment (PD enclosure); - new classification and marking for general purpose enclosure (GP enclosure) and enclosure for pre-determined equipment (PD enclosure); - required data for instruction sheet and/or documentation according to the type of enclosure; - adequate space to allow mounting and connection of the accessories (fully equipped) as declared by the manufacturer; - requirements for general purpose enclosure (GP enclosure) as in Clause 101; - requirements for enclosure for pre-determined equipment (PD enclosure) as in Clause 102; - instructions to be given by the manufacturer of the GP enclosure to the installer how to integrate accessories and example of calculation given in Annex AA; - instructions to be given by the manufacturer of the PD enclosure to the installer how to integrate accessories given in Annex BB. This publication is to be read in conjunction with IEC 60670-1:2002.
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The Requirements department helps you quickly locate within the normative text:
- mandatory clauses to satisfy,
- non-essential but useful clauses to know, such as permissions and recommendations.
The identification of these types of clauses is based on the document “ISO / IEC Directives, Part 2 - Principles and rules of structure and drafting of ISO documents ”as well as on a constantly enriched list of verbal forms.
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