Emc Performance Precautions - Philips Xitanium LED Xtreme SR Design-In Manual

To LEDs
Very large
loop area
To LEDs
PE L N
To LEDs
SR
To LEDs
To LEDs
PE L N SR
To LEDs
Design-in Guide - Philips Xitanium LED Xtreme SR driver
PE
PE L N
L
SR
N
SR
+
To LEDs
-
PE L N
SR
To LEDs
PE L N
SR
PE L N
SR
To LEDs
SR
PE L N
PE L N
SR

EMC performance precautions

The following practical precautions need to be taken into account in a
lighting system for optimal EMC performance:
• Keep the SR control and Vaux wires within the luminaire; do
not connect these wires from one luminaire to the next or to
external sensors/nodes.
• Minimize the loop area of the LED output wires going from the driver to
the LED module by keeping the output wires close together (bundling).
• Minimize the parasitic capacitive coupling of the LED output wiring
towards earth by keeping the wiring length as short as possible.
• Keep the length of the incoming mains wire inside the luminaire as short
as possible.
• Keep mains and SR control wires separated from the LED output wires.
Do not bundle or cross the wires.
• Do not route any wiring over and/or along the driver enclosure to avoid
any noise coupling/crosstalk with internal driver circuitry
Insulation Class I application: ground the luminaire chassis and other
large internal metal luminaire parts (driver mounting plate, reflector,
canopy, heat sink etc.) to Protective Earth. Always connect the driver
equipotential connector (EQUI) to Protective Earth.
Insulation Class II application: use equipotential bonding wires
between all large metal luminaire parts (driver mounting plate, canopy, heat
sink etc.) Do not keep large metal parts electrically insulated. Always
connect the driver equipotential connector (EQUI) for equipotential
bonding.
• Keep the equipotential wires as short as possible to maximize their
effectiveness and use, as much as possible, large metal areas (chassis,
mounting plates, brackets) for earthing purposes instead. Establish a reliable
electrical connection by using a toothed washer and screw(s) fastened with
adequate mounting torque.
Adhering to these rules will help to achieve EMC compliance. For further
questions and/or design-in support please contact your local Philips
representative.
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