IEC 60364-4-44:2007/AMD2:2018

IEC 60364-4-44 ®
Edition 2.0 2018-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 2
AM ENDEMENT 2
Low-voltage electrical installations –
Part 4-44: Protection for safety – Protection against voltage disturbances and
electromagnetic disturbances
Installations électriques à basse tension –
Partie 4-44: Protection pour assurer la sécurité – Protection contre les
perturbations de tension et les perturbations électromagnétiques

IEC 60364-4-44:2007-08/AMD2:2018-01(en-fr)

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IEC 60364-4-44 ®
Edition 2.0 2018-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 2
AM ENDEMENT 2
Low-voltage electrical installations –

Part 4-44: Protection for safety – Protection against voltage disturbances and

electromagnetic disturbances
Installations électriques à basse tension –

Partie 4-44: Protection pour assurer la sécurité – Protection contre les

perturbations de tension et les perturbations électromagnétiques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.10; 33.100.20; 91.140.50 ISBN 978-2-8322-4918-5

– 2 – IEC 60364-4-44:2007/AMD2:2018
 IEC 2018
FOREWORD
This amendment has been prepared by IEC technical committee 64: Electrical installations
and protection against electric shock.
The text of this amendment is based on the following documents:
FDIS Report on voting
64/2230/FDIS 64/2236/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC website under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
440.2 Normative references
Add the following new references:
IEC 60364-5-52, Low-voltage electrical installations – Part 5-52: Selection and erection of
electrical equipment – Wiring systems
IEC 61156 (all parts), Multicore and symmetrical pair/quad cables for digital communication
IEC 61196-7, Coaxial communication cables – Part 7: Sectional specification for cables for
BCT cabling in accordance with ISO/IEC 15018 – Indoor drop cables for systems operating at
5 MHz – 3 000 MHz
ISO/IEC 11801-1, Information technology – Generic cabling for customer premises – Part 1:
General requirements
ISO/IEC 14763-2:2012, Information technology – Implementation and operation of customer
premises cabling – Part 2: Planning and installation
ISO/IEC 14763-2:2012/AMD1:2015
ISO/IEC TR 29106, Information technology – Generic cabling – Introduction to the MICE
environmental classification
 IEC 2018
444.6 Segregation of circuits
Replace the existing Subclause 444.6 with the following new Subclause 444.6:
444.6 Segregation of circuits
444.6.1 General
Power supply cables (or conductors) and information and communication technology cables
which share the same cable management system or the same route, shall be installed
according to the requirements of 444.6.
NOTE For the purposes of this subclause, cable management systems are considered to include busbar trunking
systems and powertrack systems.
Electrical safety and electromagnetic compatibility may produce different requirements for
electrical segregation and electrical separation. Electrical safety always has the higher
priority.
444.6.2 Design requirements
The following requirements apply unless 444.6.3 applies.
Where the specification and/or intended application of the information and communication
technology cable is not available, the cable separation distance between the power and
information and communication technology cables shall be not less than 200 mm in free air,
provided:
– the total current in a LV cable or in a bundle of LV cables does not exceed 600 A,
– the applications supported by the cabling are designed to operate using the information
and communication technology cabling installed or to be installed, and
– the information and communication technology cables are:
• balanced cables having electromagnetic immunity performance in accordance with
IEC 61156 (all parts) for Category 5 and above, or
• coaxial cables having electromagnetic immunity performance in accordance with
IEC 61196-7.
In all other cases, the requirements and recommendations of ISO/IEC 14763-2:2012, 7.9.2,
apply.
The 200 mm separation distance may be reduced according to Table 444.1.
Where a screened power cable is used, the separation distance may be reduced in
accordance with the specification provided by the screened power cable manufacturer,
provided that the screen is earthed at both ends.
Power cables that also carry information and communication technology applications are not
considered to be information and communication technology cables.

– 4 – IEC 60364-4-44:2007/AMD2:2018
 IEC 2018
Table 444.1 – Summary of minimum separation distances where the
specification and/or intended application of the information and
communication technology cable is not available
Containment applied to the power supply cabling
Separation without Open metallic Perforated metallic Solid metallic
electromagnetic barrier containment containment containment
A B C
200 mm 150 mm 100 mm 0 mm
A: Applicable to containment with screening performance (DC-100 MHz) equivalent to welded mesh steel
basket of mesh size 50 mm x 100 mm. This screening performance is also achieved with steel tray even
if the wall thickness is less than 1,0 mm and/or the evenly distributed perforated area is greater than
20 %.
B: Applicable to containment with screening performance (DC-100 MHz) equivalent to steel tray of at least
1,0 mm wall thickness and no more than 20 % evenly distributed perforated area. The screens or
armouring of power cables are considered to act as perforated metallic containment if they do not meet
this constructional equivalent of solid metallic containment.
C: Applicable to containment with screening performance (DC-100 MHz) equivalent to a steel conduit of at
least 1,5 mm wall thickness.
The minimum separation between the information and communication technology cables and
power supply cables shall include all allowances for cable movement between their fixing
points or other restraints (see example in Figure 44.R17).
Restraint/fixing
Separation
IEC
Figure 44.R17 – Example of cable separation distance
The minimum separation requirement applies in three dimensions. However, where
information and communication technology cables and power supply cables are required to
cross and required minimum separation cannot be maintained then the angle of their crossing
shall be maintained at approximately 90° on either side of the crossing for a distance no less
than the applicable minimum separation requirement.
444.6.3 Conditions for zero segregation
No segregation is required between information and communication technology cabling and
power supply cabling (other than that required by national or local regulation or
IEC 60364-5-52) provided that the information and communication technology cabling is
application(s)-specific and the application(s) support(s) a zero segregation relaxation.
No segregation is required between information and communication technology cabling and
power supply cabling where all the following conditions are met:
– the information and communication technology cables are in accordance with IEC 61156
(all parts) for Category 5 and above, or are coaxial cables having electromagnetic
immunity performance in accordance with IEC 61196-7,

 IEC 2018
– the environmental classification of the space containing the information and
communication technology cabling complies with electromagnetic classification E1 of
ISO/IEC TR 29106 (or ISO/IEC 11801-1), and
– the power supply conductors comprising a circuit are either:
• within an overall sheath and provide a total current no greater than 100 A, or
• twisted, taped or bundled together and provide a total power no greater than 10 kVA.

Annex C
Insert, in the table, between the 12th and 13th rows the following three new rows:
AT 444.6 In Austria, Subclause 444.6 does not apply.
DE 444.6.2 In Germany, replace the existing text of 444.6.2 with the following:
"The requirements of ISO/IEC 14763-2:2012, 7.9 apply."
DE 444.6.3 In Germany, replace the existing text of 444.6.3 with the following:
"The requirements of ISO/IEC 14763-2:2012, 7.9.2.2 apply."

Bibliography
Delete the reference to IEC 61156 (all parts)

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