SIST IEC 60364-5-55:2006/A1:2006
(Amendment)Amendment 1 - Electrical installations of buildings - Part 5-55: Selection and erection of electrical equipment - Other equipment
Amendment 1 - Electrical installations of buildings - Part 5-55: Selection and erection of electrical equipment - Other equipment
Amendement 1 - Installations électriques des bâtiments - Partie 5-55: Choix et mise en oeuvre des matériels électriques - Autres matériels
Električne inštalacije zgradb - 5-55. del: Izbira in namestitev električne opreme - Druga oprema - Dopolnilo A1
General Information
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Overview
IEC 60364-5-55 Amendment 1 (IEC 60364-5-55-am1) is an amendment to Part 5-55 of the IEC 60364 series: "Selection and erection of electrical equipment – Other equipment". Published by IEC Technical Committee 64, this Amendment adds definitions and specific requirements for safety services and their electrical supplies in buildings. It clarifies scope exclusions (e.g., standby supplies other than for safety services and installations in hazardous areas BE3) and updates normative references related to fire-resistant cables, luminaires for emergency lighting and generators.
Key topics and technical requirements
- New definitions introduced: self-contained battery unit, non‑maintained/maintained mode, safety services, electrical safety source, rated operating time.
- Scope limits: electrical standby supply systems (except for safety services) are out of scope; hazardous area installations require IEC 60079 / IEC 61241 series.
- Safety services in fire conditions
- A safety source must provide adequate duration supply; equipment must possess adequate fire resistance by selection or erection.
- Protective measures against indirect contact should preferably avoid automatic disconnection at first fault.
- In IT systems, continuous insulation monitoring with audible/visible indication of first earth fault is required.
- Supplies and redundancy
- Dual or independent feeders are permitted if suppliers assure low concurrent-failure risk.
- Generators with reciprocating engines shall comply with ISO 8528-12.
- Safety sources must be fixed, ventilated, restricted to skilled personnel and have sufficient capacity for the services they feed.
- Operational status and critical switching/fault indications must be shown at a continuously monitored central point (except for self-contained battery units).
- Switchgear, controlgear and segregation
- Switchgear for safety services must be fire resistant, clearly identified and accessible only to instructed personnel; physically separated from normal supply components.
- Wiring and cable requirements
- Safety circuits must be independent from other circuits and, where required to operate in fire conditions, use:
- Mineral-insulated cables (IEC 60702 series)
- Fire-resistant cables (IEC 60331 / IEC 60332 tests)
- Or wiring systems providing equivalent fire/mechanical protection
- Safety circuits must avoid routing through fire‑exposed locations (BE2) or explosive zones (BE3); alternate circuit wiring for emergency luminaires ensures escape-route illumination if one circuit fails.
- Battery charger wiring is not considered part of the safety circuit; transformers feeding differing voltages must have separate windings.
- Safety circuits must be independent from other circuits and, where required to operate in fire conditions, use:
Applications and users
This amendment is essential for:
- Electrical designers and building services engineers specifying emergency power, safety lighting, fire pumps, alarm and evacuation systems
- Electrical contractors and installers implementing safety circuits and fire-resistant wiring
- Facilities managers, safety officers and authorities having jurisdiction responsible for compliance and operation of life‑safety electrical systems
- Test laboratories and procurement teams referencing required cable and luminaire standards
Keywords: IEC 60364-5-55-am1, electrical installations, safety services, emergency power, fire‑resistant cables, safety lighting, electrical safety source, wiring systems.
Related standards
- IEC 60364-1 (fundamental principles)
- IEC 60331 / IEC 60332 (cable fire tests)
- IEC 60702 (mineral-insulated cables)
- IEC 60598-2-22 (emergency luminaires)
- ISO 8528-12 (generating sets for emergency power)
- IEC 60079 / IEC 61241 (hazardous area equipment)
Standards Content (Sample)
SLOVENSKI SIST IEC 60364-5-
55:2006/A1:2006
STANDARD
september 2006
Električne inštalacije zgradb – 5-55. del: Izbira in namestitev električne
opreme – Druga oprema – Dopolnilo A1
Electrical installations of buildings - Part 5-55: Selection and erection of electrical
equipment - Other equipment - Amendment A1
ICS 91.140.50 Referenčna številka
SIST IEC 60364-5-
55:2006/A1:2006(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
NORME CEI
INTERNATIONALE IEC
60364-5-55
INTERNATIONAL
STANDARD
AMENDEMENT 1
AMENDMENT 1
2001-12
Amendement 1
Installations électriques des bâtiments –
Partie 5-55:
Choix et mise en oeuvre des matériels électriques –
Autres matériels
Amendment 1
Electrical installations of buildings –
Part 5-55:
Selection and erection of electrical equipment –
Other equipment
IEC 2001 Droits de reproduction réservés Copyright - all rights reserved
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
H
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue
60364-5-55 Amend. 1 © IEC:2001 – 3 –
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
64/1190/FDIS 64/1201/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
The committee has decided that the contents of this base publication and its amendments will
remain unchanged until 2006. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
___________
Page 3
CONTENTS
Insert the following new clause:
550.3 Definitions
Page 7
550.1 Scope
Add the following text at the end of the existing text and before the note:
Electrical standby supply systems, other than for safety services, are outside the scope of this
standard.
This part of IEC 60364 does not apply for installations in hazardous areas (BE3).
Renumber the existing NOTE as NOTE 1 and add the following NOTE 2:
NOTE 2 For additional requirements for hazardous areas, see the IEC 60079 and IEC 61241 series.
60364-5-55 Amend. 1 © IEC:2001 – 5 –
550.2 Normative references
Add the following additional normative references:
IEC 60331-11, Tests for electric cables under fire conditions – Circuit integrity – Part 11:
Apparatus – Fire alone at a flame temperature of at least 750 °C
IEC 60311-21, Tests for electric cables under fire conditions – Circuit integrity – Part 21:
Procedures and requirements – Cables of rated voltage up to and including 0,6/1,0 kV
IEC 60332-1, Tests on electric cables under fire conditions – Part 1: Test on a single vertical
insulated wire or cable
IEC 60364-1, Electrical installations of buildings – Part 1: Fundamental principles,
assessment of general characteristics, definitions
IEC 60598-2-22, Luminaires, Part 2-22: Particular requirements – Luminaires for emergency
lighting
IEC 60702-1, Mineral insulated cables with a rated voltage not exceeding 750 V – Part 1:
Cables
IEC 60702-2, Mineral insulated cables with a rated voltage not exceeding 750 V – Part 2:
Terminations
ISO 8528-12, Reciprocating internal combustion engine driven alternating current generating
sets – Part 12: Emergency power supply to safety services
Page 9
Add, after the Normative references, the following new clause:
550.3 Definitions
For the purpose of this part of IEC 60364, the following definitions apply:
550.3.1
self-contained battery unit
unit comprising a battery and a charging and testing unit
550.3.2
non-maintained mode
operating mode of electrical equipment, essential for safety services, operating only when the
normal supply fails
550.3.3
maintained mode
operating mode of electrical equipment, essential for safety services, operating at all times
60364-5-55 Amend. 1 © IEC:2001 – 7 –
550.3.4
safety services
those services in a building which are essential
– for the safety of persons,
– for avoiding damage to the environment or other material
NOTE Examples of safety services include
− emergency (escape) lighting,
− fire pumps,
− fire brigade lifts,
− alarm systems, such as fire alarms, smoke alarms, CO alarms and intruder alarms,
− evacuation systems,
− smoke extraction systems,
− essential medical equipment.
550.3.5
electrical safety source
source intended to maintain the supply to electrical equipment essential for the safety
services
550.3.6
electrical supply system for safety services
See IEC 60050(826)
550.3.7
rated operating time of a safety source
operating time for which a safety source is designed under normal operating conditions.
Pages 17, 19 and 21
Replace clauses 556 to 556.8.1 by the following:
556 Safety services
556.1 General requirements
556.1.1 Safety services required to operate in fire conditions shall meet the following
requirements:
– a safety source shall maintain an electrical supply of adequate duration;
– equipment shall have a fire resistance of adequate duration either by suitable selection or
erection.
NOTE 1 Safety services may also be required to comply with additional national or local regulations.
NOTE 2 Two types of electrical supply source may exist: the safety source and the normal source.
NOTE 3 The normal source is, for example, the public supply network
556.1.2 For protection against indirect contact, protective measures without automatic
disconnection at the first fault are preferred.
60364-5-55 Amend. 1 © IEC:2001 – 9 –
In IT systems continuous insulation monitoring devices shall be provided to give an audible
and visible indication of a first fault to earth.
556.2 Supplies to current-using equipment
Where electrical equipment is supplied by two different sources, a failure occurring in the
circuit from one source shall not impair the protection against electric shock or the correct
operation of the other source. Where such equipment requires a protective conductor, it shall
be connected to the protective conductors of both circuits.
556.3 Special requirements
556.3.1 Protection against short-circuit and against electric shock, under normal conditions
and in case of a fault, shall be ensured under any configuration of the normal and safety
sources of supply.
556.3.2 Protection against overload may be omitted where the loss of supply may cause a
greater hazard. Where protection against overload is omitted, the occurrence of an overload
shall be monitored.
556.3.3 Depending on whether the safety source is to operate in parallel with or
independently of the normal supply, the appropriate subclauses of clause 551 shall be taken
into account.
556.4 Switchgear and controlgear
556.4.1 Switchgear and controlgear shall be provided, either by construction, location or
erection, with protection ensuring fire resistance of adequate duration.
556.4.2 Controlgear shal
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Frequently Asked Questions
SIST IEC 60364-5-55:2006/A1:2006 is a amendment published by the Slovenian Institute for Standardization (SIST). Its full title is "Amendment 1 - Electrical installations of buildings - Part 5-55: Selection and erection of electrical equipment - Other equipment". This standard covers: Amendment 1 - Electrical installations of buildings - Part 5-55: Selection and erection of electrical equipment - Other equipment
Amendment 1 - Electrical installations of buildings - Part 5-55: Selection and erection of electrical equipment - Other equipment
SIST IEC 60364-5-55:2006/A1:2006 is classified under the following ICS (International Classification for Standards) categories: 91.140.50 - Electricity supply systems. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST IEC 60364-5-55:2006/A1:2006 has the following relationships with other standards: It is inter standard links to SIST IEC 60364-5-55:2006. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
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