Safety information concerning Siteco high bay reflector luminaires with Type B integrated aluminium cup capacitors
As a manufacturer of high quality lighting technology we place high importance on quality and the safety for our products.
In some of our products aluminium cup capacitors are used, as are used by many other luminaire manufacturers as well.
During operation, it may happen that conditions occur on the inside of the capacitor that lead to bursting. These conditions may for example be caused by the following external factors:
- Harmonics in the power supply grid (often only detectable with measurements over long periods)
- Voltage peaks (switch-on peaks)
- Thermal overloading (e.g. via rectifier effect of the lamp due to lack of maintenance)
Regular maintenance can minimise the risk that leads to the specified factors. In this regard we refer to the appropriate maintenance recommendations (accident prevention regulations and recommendations of lamp manufacturers etc.)
To safeguard against these factors of influence on-site and to avoid bursting as far as possible, Siteco only uses aluminium cup capacitors with excess pressure relief (so-called Type B capacitors).
Despite intensive component inspections of the capacitor manufacturers that far exceed existing standards, in individual cases operation of the capacitor may lead to a failing of the excess pressure relief inside the component. As a result, the capacitor may burst.
Within the framework of our continuous product inspections, we found that with high bay reflector luminaires with IP 65 protection (reflector and cover panel), capacitor bursting and (due to luminaire construction) excessive increase of pressure within the luminaire and the reflector occurred, which led in very rare cases to the luminaire glass cover panel falling down.
In order to ensure that in these rare cases falling down of the glass panel is avoided, and thus also avoiding danger to people and property, we recommend retrofitting the luminaires with a retaining cord.
For the series 5NJ3.. and 5NJ6.. we offer a set (article no. 5NJ300100, each set with 10 retaining cords and suitable fixing) for retrofitting.
This is why we have decided to from now only supply luminaires of this construction type with retaining cord, if this was not the delivery specification anyway.
Our contacts in Sales would be glad to answer any further questions. You can find an overview of the sales offices on the internet at
http://www.siteco.com/en/company/siteco-global.html
Siteco QM, issued: 2011-02-23