AS NZS 60598.2.23:2021 – Luminaires Part 2.23: Particular requirements— Extra-low-voltage lighting systems for ELV light sources (IEC 60598-2-23:2020(ED.2.0)MOD).
The installation instructions shall clearly and unambiguously state:
a) how the extra-low-voltage lighting system is to be mounted, and in particular, the maximum permitted distance between the main supports and the spacing of auxiliary supports;
b) whether special requirements, for example due to characteristics of the transformerlconvertor!controlgear, shall be observed for components of an existing mains supply to which the extra- -voltage lighting system is to be connected, for example socket-outlets, switches, dimmers:
c) that the supporting conductors of different extra- -voltage lighting systems shall be mounted so as not to be able to come into contact with each other, where applicable;
d) that the extra- -voltage lighting system shall not be extended beyond the number of luminaires belonging to the complete set, and that only parts assigned by the manufacturer shall be used;
e) that no additional attachments, for example for decorative purposes, shall be used; 1) that the following warning statement be provided:
WARNING o avoid the risk of overheating and fire, do not bridge the conductors;
g) the positions or spacings for the connections of luminaires (if applicable).
23.7 Construction
The provisions of SectIon 4 of Part I apply, together with the requirements of 23.7.1 to 23.7.11.
23.7.1 The whole set of the extra- -voltage lighting system, as delivered by the manufacturer, shall be complete, including the transformer or convertor/controlgear. The secondary side of the extra- -voltage lighting system shall comply with the requirements of
Compliance is checked by mounting as in normal use, inspection and by the applicable measurements and tests required by this document.
23.7.2 Transformers, power supply units or switch mode power supply units provided with safety extra- -voltage lighting systems shall be of the safety isolating type, complying with the requirements of IEC 61558-2-6 or IEC 61558-2-16. and having a rated output voltage not exceeding 25 V RMS or 60 V ripple free DC.
23.7.3 Convertorsicontrolgear provided with safety extra.low.vollage lighting systems shall be of the safety isolating type, complying with IEC 61347-2-2 or IEC 61347-2-13. and having a rated output voltage not exceeding 25 V RMS or 60 V ripple free DC.
23.7.4 Supporting conductors shall be continuous and shall be capable of supporting five times the mass of the luminaires (including their lamps) intended to be connected to them.
Compliance is checked by applying a load at 90 to the conductors to the mid-point of a maximum span equal to five times the weight of the lumiriaires and lamps supplied with the system, with a minimum load of 10 kg, for a period of I h. applied simultaneously to both conductors. After the test, the load is removed and the deflection from the normal position shall not exceed 10 % of the distance between the supporting conductors measured before applying the load.
If pin contacts or edge contacts are used in the system, then the supporting conductors shall have been subjected to 25 piercings at different places before the test.
23.7.5 Luminaire connectors shall be capable of supporting five times the mass of the luminaire (includin9 its light source) without permanent deformation.
23.12 ProtectIon against electric shock
The provisions of Section 8 of Part 1 apply, together with the following requirement.
The supply voltage of the supporting conductors shall not exceed, for alternating current, 25 V RMS and for direct current, 60 V ripple-free.
23.13 Endurance tests and thermal tests
The provisions of Section 12 of Part 1 apply, together with the requirements of 23.13.1 and
23.13.1 The extra- -voltage lighting system shall be tested in normal operation at 1.06 times its nominal supply voltage, or at 1,06 times the mean value of Its nominal supply voltage range, with the exception of transformers/convertors or controlgear marked Q,, which shall be tested at their nominal voltage or at the mean value of the nominal supply voltage range.
Maximum surface temperatures of bare conductors In the output circuit shall not exceed 70 °C. In the case of Insulated conductors, the upper limit Is the maximum temperature permitted for the Insulation used.
NOTE For deteOs of marking, rater to IEC 61347-24 or EC 61556-24 as approprial. For detaMs 04 t marking, reFer to EC 61347.2- EC 61347.2-13 as appropria4.
23.13.2 During the test for abnormal operation, the extra. -voltage lighting system shall be operated at a voltage between 0,9 and 1,1 times its nominal supply voltage or nominal supply voltage range, whichever gives the highest temperature values at the parts mentioned In Tables 12.3 to 12.5 of Part 1.
Points in the secondary circuit where short circuits can occur shall be short-circuited. In this connection, the lamps shall be completely Inserted into the lampholders.
The maximum surface temperature of the conductors in the output circuit shall not exceed the temperatures found under normal operating conditions by more than 10 K.