11
Introduction
All LED are subjected to extensive testing
at Hella, both in the laboratory and in prac-
tice. In the year 2002, for example, 20 trai-
lers belonging to an international freight
carrier were fitted out with Dura-LED lights
for a marathon test. Result: No failures to
date. The test continues.
Products in comparison.
Hella's original parts quality is subject to
comparison with standard products in
regular laboratory tests. These reveal again
and again how detailed solutions can cause
or prevent problems for the user.
1. The temperature-sensitive current con-
trollers in one side marker light common
on the market are soldered by hand.
During this process, minor unnoticed preli-
minary damage is caused to the compo-
nents. This significantly reduces the service
life of the whole LED light.
Hella relies exclusively on a precise
automated process.
2. In the case of one position light tested,
metal plates were inserted with the purpo-
se of reflecting the light and thus adhering
to the radiation angle required by legislation.
This engineering principle is extremely
dubious, however, both in terms of pro-
duction tolerances and in normal operati-
on. Influences such as corrosion or ben-
ding of the metal caused by vibration lead
to the required lighting values no longer
being achieved.
Hella uses a high-grade optical system
for this functional requirement.
The products tested by Hella usually have
ECE approval. The test results often convey
the impression, however, that there must
have been fluctuations in quality during
production. In contrast, Hella products
meet all legal requirements as well as
vehicle manufacturers' requirements,
which often go beyond the criteria required
by law.
More functional safety through LEDs.
Commercial vehicles are always under a lot of perfor-
mance pressure. Fleet managers and drivers alike
expect functional safety with no ifs and buts. In other
words, high-quality vehicle components with a long
service life. Hella LED lights meet these requirements.
Their development and production takes place accor-
ding to the most stringent quality standards. Hella
tests their suitability for everyday use in a series of the
toughest simulation tests. These include martyr stret-
ches, artic cold, tropical heat, thunderstorms and tor-
rential rain. At the end of the day, LEDs come out win-
ners against conventional filament bulbs.
Note: All LED lights have been designed for operation
in DC voltage networks. Their operation with pulsed
supply voltage or alternating current is not permissible.
Hella Original Parts
quality sets standards.
Product test LED lights:
Two examples.
In this context, a note about
ECE approval:
Negative example 1: Side marker light.
Negative example 2: Position light.