MTC maintronic GmbH - Schweinfurt | Germany - www.maintronic.com
CRD400 INS - Manual
Date: 09.07.2021
Page
15
Dimming characteristics
Power rating of retrofit dimmers
Load
type
cutting method
Power output in percent
Calculated
power load
Ohmic
trailing edge
approx. 100% of the rated power
600 VA
LED
trailing edge
approx. 70% of the rated power
420 VA
LED
leading edge
approx. 20% of the rated power
120 VA
As a rule:
Example 28x W (rated power LED) + 20% power factor = 135 VA power
to be processed. Specifications depend on the light source used and may
vary upwards and downwards.
Derating
The specified max. power rating applies to installation in a sufficiently ventilated location.
In case of lower heat dissipation, e.g. in cavity walls, flush-mounted/ junction boxes, as well as in
case of mutual heating of several devices, the max. power rating is reduced accordingly.
In case of overtemperature automaticly derating takes place, which means the power will reduced
depending on the temperature. Status-LED is indicating over temperature and the brightness of
the lamps decreases.
Short circuit
In case of a short circuit, the unit switches off the output. Every 30 seconds, the unit tests whether
the short circuit has been eliminated.If it has, the unit restarts automatically. If the fault is still
present after 5 min, the unit is switched off.
Instruction: Switch off the unit and eliminate the short circuit.
Noise emission
It may occur that the dimmers cause acoustic noise when they are used under unfavourable
conditions or with certain luminaires. Our dimmers are extreemly low noise design, noise is always
an indicator for the overal quality of the used luminaires. Try to change luminaires with other /
better characteristics.
Flickering
The device works propperly under regular power quality conditions. Flicker or other visual effects
may occur in case of insufficient mains conditions like fluctuations, Jitter or also power control
signals. Power grid immanent effects are not a defectives of the device.
Check your local grid.
Content of this page
Power rating of retrofit
dimmers
Derating
Short circuit
Noise emission
Flickering
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Casambi Sensors and
Parameters