501
INFORMATION
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Power supply delivers too much voltage for number of spots:
Power supply delivers too little voltage for number of spots:
Minimum and maximum number of spots on power supply:
Secured LED power supplies:
Never install current controlled LED spotlights under voltage
Wrong installation :
Let’s say you want to connect only one 3,2W spotlight, you’ll only need 9,14V. this is lower than the 17V minimal voltage of the power
supply. This will result in a defect in the spotlight, because the voltage is too high.
The entire circuit of spotlights always needs to be tested at once. When the installer tests the power supply with each spotlight
separately, the spotlight, which requires only 9,14V, immediately receives the full 17V minimum voltage. This too much, so the spot
will malfunction.
When you connect 8 of these 3,2W spotlights to the same power supply, you’ll need a total current of 73,12V (= 8 x 9,14V). This is
higher than the maximal voltage of the power supply. The LED spotlights won’t reach their full luminous efficiency. In other words,
they will look ‘dimmed’.
For this 350mA power supply (17 – 34V) you need to install at least two of these 3,2W spotlights. The maximum capacity of the power
supply is three of these spotlights. In case you want to install more of them, you’ll need a power supply with a higher output.
Some power supplies are secured against the above phenomenon. When this kind of power supply is put under voltage and no
spotlights are connected, they won’t give off their maximum voltage. Instead, they won’t distribute any voltage at all.
The power supply will only start distributing voltage when the spotlights are connected and the power supply is restarted.
During the installation of current controlled LED spotlights, the LED power supply may never be under voltage! Neglect this and
you’ll risk damaging the LEDs. You’ll even lose your warranty by doing so. In case of doubt, contact a professional electrician.
When LED power supplies are put under voltage, they start looking for the amount of voltage they need to distribute. When there are
no spotlights connected, most power supplies will keep building up voltage up to their maximum.
If you connect a LED spotlight to this fully charged power supply, it will immediately receive the maximum output voltage. If this is
higher than the maximum voltage of the LED spotlight, the LED will get damaged. It only takes a split second to make this happen.
So, it’s extremely important to switch off the voltage on your power supply while installing your LED spotlights.
Suppose we put a 350mA (17-34V) power supply under voltage. Then, we connect a 3,2W LED spotlight. The spotlight will immediately
get the full 34V output. The maximum voltage for this 3,2W spotlight is only 9,14V (= 3,2W / 350mA), so the LED will get damaged.
You need to connect all your LEDs in advance, before putting your power supply under voltage. This way the power supply can build
up to the required voltage.
The spotlight will immediately get the full
34V output and will get damaged.
The spotlight will immediately get the full
34V output and will get damaged.
The power supply can only be switched on the primary side i.e. before the 230V mains voltage comes in. Otherwise the LED will get
damaged, just like in the situation above.
~
power
supply
+
-
+
-
350mA
3,2W
9,14V
350mA
Output 6-12W
Output 17-34V
~
power
supply
+
-
+
-
350mA
3,2W
9,14V
350mA
Output 6-12W
Output 17-34V
