RTxxx LED lighting controllers - User Manual
6
Connections
See
Section 13, Reference information
for information about
connection ratings
6.1
Power supply
In the unlikely event of a fault in the RTxxx, the maximum power
dissipation in the unit can be:
Power supply voltage
x
Max current delivered by power supply
Either limit the power supply output current so that the RTxxx cannot
dissipate more than 30W, or mount the unit in a fire enclosure.
Choose a PSU that is designed to limit its output current, or by setting
the current limit on the supply (if this feature exists), or use a fuse.
The fuse should be de-rated if mounted in an enclosure, as the
temperature can be higher than the ambient temperature.
The external power supply must be capable of supplying at least the
average output power for all active channels.
We recommend you use a regulated power supply with 100% short
circuit protection. If however a non-regulated power supply is used,
then the maximum ripple voltage of the power supply must not
exceed 10% of the DC voltage.
Route the low voltage and mains wiring separately. If they must be
loomed together, ensure that the insulation rating of the low voltage
wiring is sufficient, or that you use supplementary insulation. The
input connections are illustrated below:
6.2
Lighting output
The lighting connections can exceed 46.7V but should not exceed 70V
DC. Pulse peak voltages above 72V are considered hazardous. The
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