104
MAINS VOLTAGE LED
The LED modules and COB LED we supply in the Lederam (exception made for Lederam F0) and Medousê collection can be
connected directly to the mains voltage because they do not require any driver (other than the one already mounted on the module).
Compared to traditional light sources, mains voltage LED modules are more sensitive to any interference in the electricity mains,
including voltage fluctuation and harmonic distortion, because they have a faster response to changes in voltage.
This means that consequently to this variations occasional flickering or functioning anomaly may occur, but since not depending on
the product, they cannot be considered a flaw or defect.
Further than by problems on the line voltage, fluctuations and harmonics may be produced by variable power loads, as those caused
by many types of motors and electronic devices. In case of anomalies we suggest to check the electrical system to apply protective
modules reducing overvoltage at the connection terminals of electronic components. By means of this modules / filters, any residual
voltage is then reduced to an appropriate protective level in relation to the discharge current.
Dimming
Mains voltage LED modules and COB LED are dimmable using IGBT (trailing edge) dimmers designed specifically for LED sources.
Their dimming is extremely delicate: incompatible dimmers may cause irreparable damage to the LED.
Some dimmers on the market have a NO button (Normally Open button) or they are specific connector socket-mounted or recessed.
They are generally inserted into junction boxes; their limited thickness facilitates the installer’s task and makes the dimmer fit for
installation even in shallow boxes.
Dimmers with an integrated radio dimmer for both manual (NO button) and wireless control are also available.
It is important to note that during adjustment (for instance with a cord dimmer) the dimming appears less precise, with some flickering.
Furthermore some types of dimmer, even if they have been recommended by the manufacturers themselves, have visible flickering
(almost essentially down to a minimum) depending on the mains and on the type of interference present. The problem can be solved
by increasing the minimum value setting of the potentiometer on the dimmer.
LED module
LED module
(Medousê)
COB LED
15W
25W
17W
25W
10W
15W
NO (Normally Open) Button
Socket-mounted or recessed
Wireless
L
N
P L
N
4
dimmer
3
supporting module
5
junction box
2
button
1
plate
lamp
2
4
1
3
5
L
N
wireless
control
dimmer
junction box
lamp
on/off button
L
N
2
dimmer
4
junction box
1
plate
3
supporting module
3
supporting module
lamp
4
junction box
2
dimmer
1
plate
2
4
3
1
105
