PDSH 957 Construction
http://decisions.iecee.org/icons/ecblank.gif PDSH 957
Construction
20.7.4
60598-2-20(ed.3)
Standard(s):
IEC 60598-2-20/2010
Subclause(s): 20.7.4
No. Year PDSH 0957 2010
Category: LITE Developed by: ETF5 OSM/LUM
Subject:
Construction
Key words:
- Connections
- Rope light
- Current carrying parts
To be approved at the 49th CTL Plenary Meeting, in 2012
Question:
In clause 20.7.4 of IEC 60598-2-20, it is mentioned that only 4.11.4 and 4.11.5 of clause 4.11 apply for
electrical connections and current carrying parts. Sub-clause 4.11.1 (contact pressure through insulating
material) does not apply. In a rope light connecting system we often have connections with pins that are
stuck axially into the bare wires after cutting the lighting tube. This is contact pressure through insulating
material. With about 16 W/m and a length until 100 m we can have a current more than 6 A at the
connecting part. With those connections we have a high risk of fire. § 20.7.4 of IEC 60598-2-20 applies, in
our opinion, to the connection to the lamp only (e.g. connection to Edison lampholders with insulating
piercing terminals). Perhaps we can follow IEC 60335-1 - § 28.2 (contact pressure through insulating
material – 0,5 A limitation for the current). We have also informed our National Standard Committee about
the matter.
Decision:
The connection is not acceptable due to the requirements of Section 15 of IEC 60598-1.
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