Download - Industrial and Bearing Supplies

137
TECHNICAL
Safety Extra Low Voltage (SELV) Lighting Recommendations (continued)
Protection and Approval
It is mandatory under the wiring rules that
transformers for remote mounting are housed
in a suitable enclosure and, as a prescribed
item, must be approved by the Statutory
Authority to EN 60742.
The approval number must be clearly marked
on the enclosure. Also, under the wiring rules,
the transformer must be installed in a position
where it is easily accessible for inspection and
maintenance.
The transformer enclosure
and wiring to the light
fitting must have adequate
ventilation. If the wiring and
the transformer enclosure
are covered with insulation
material then substantial
derating and overheating
may occur.
Electronic Safety Isolating Transformers for Low Voltage Lamps
Immunity
A transient mains voltage surge may
occur when inductive loads (e.g. motors
or conventional chokes) are switched off.
TE electronic transformers are protected
against voltage surges and spurious pulses
of any polarity by random phase position
superimposed on the supply voltage, in
accordance with EN 61547.
Emission
The limits for emission as per EN 61000-3-2
are maintained by high-quality filter circuits.
Electromagnetic Compatibility
Harmonics from non-linear loads cause
distortions in the mains supply. The special
circuit design fulfils the requirements of
EN 61000-3-2.
RFI Protection
The sophisticated filtering system of
electronic transformers TE ensures
compliance with EN 55015 and
VDE 0875-151
Harmonics
The requirements of the EMS Directive
89/336/EEC are fulfilled by observance of the
standards for emission and immunity.
Disposal of old lamps and control gear
Hella products comply with the RoHS regulations passed by the EC on electronic waste
Disposal of incandescent lamps
Incandescent lamps consist of glass and
metal. They do not contain any materials
that will harm the environment so they can
be simply thrown away with the household
refuse. They should not be placed in
containers for recycled glass, however,
because the glass used for these lamps is not
the same as the glass used for bottles.
Tungsten-Halogen lamps contain very small
quantities of halogens and Halogen-hydrogen
compounds, but the amounts are insignificant
(only a few millionths of a gram). Even several
lamps together do not present any risk to
people or the environment. The lamps can
therefore be thrown away with household
waste.
Disposal of discharge lamps
Small quantities of mercury can be found
in most HID fluorescent and compact
fluorescent lamps. These lamps also contain
small quantities of recyclable phosphors
so they should not be placed in household
refuse or recycled glass containers but sent
for proper recycling at community recycling
centres. Low-pressure sodium lamps and
sodium Xenon lamps can be disposed of
without the need for any special action.
Disposal of control gear
Hella ECGs, ballasts, ignitors, capacitors
and other electronic units do not contain
any material that will harm the environment
but they do contain recyclable electronic
components so they should be disposed of
as electronic waste.