[IEC 61439 for LV equipment April 16th 2020 webinar] - Thermal monitoring on busbar

[PascalL]

Question from Alvin,

Is it logical or allowed to install thermal monitoring into the busbar compartment? does it affect the type test?

[PascalL · Accepted solution]

Hello,

If the system is designed by an original manufacturer, and certified IEC 61439, the system I supposed need to be installed based on a specific documentation. This documentation has been established to guarantee and keep the IEC 61439 performance. In case of doubt additional document as "conformity declaration" can be provide to asset this additional topic.

Pascal Lepretre

Standardization Officer - Edison Expert.

[TewfikBoudiba · Accepted solution]

The installation of the thermal monitoring sensor in the busbar compartment must be tested for insulation.

In MV cubicles, for example, certain ranges of switchgear are prohibited for adding sensors to the busbar compartment because this no longer ensures insulation resistance.
For the LV, it is recommended to return to the manufacturer so that it confirms the feasibility.

Stay Safe,