04.04.2022 3/6
LL1x150-CR-DA
T22 121 1E
Helvar
|
Helvar Oy Ab, Keilaranta 5 FI-02150 Espoo, Finland. Data is subject to change without notice. www.helvar.com
Filtered dimming technology
Filtered dimming technology is created to achieve extremely high quality and flicker free light output even at the lowest dimming levels.
Light output is dimmed with amplitude dimming until the very lowest light levels (< 3%) and below that, stable light output is provided
with filtered high frequency signal. Dimming technology complies with IEEE 1789-2015 recommendations of current modulation to
mitigate health risks to viewers.
3 %
100 %
3 %
100 %
LED curr
ent
Brightness
Amplitude
dimming
1 %
3 %
3 %
1 %
Filtered
dimming
Dimming range
Modulation frequency
100 %
–
3 %
0 Hz (DC)
3 %
–
1 %
> 2 kHz
Quantity of drivers per miniature circuit breaker 16 A Type C
Based on inrush current I
peak
Typ. peak inrush current I
peak
1/2 value time, Δt
Calculated energy, I
peak
2
Δt
24 pcs.
44 A
192
µs
0.2565
A
2
s
CONVERSION TABLE FOR OTHER TYPES OF
MINIATURE CIRCUIT BREAKER
I (A)
T (ms)
I
peak
Δt
½ I
peak
MCB
type
Relative quantity of
LED drivers
B 10 A
37 %
B 16 A
60 %
B 20 A
75 %
C 10 A
62 %
C 16 A
100 % (see table above)
C 20 A
125 %
Total continous current of the drivers and installation environment must always be considered and taken into calculations when installing
drivers behind miniature circuit breaker. Example calculation of total drivers amount limited by continous current: n(I
cont
) = (16 A (I
nom,Ta
) /
“nominal mains current with full load”) x 0.76). This calculation is an example according to recommended precautions due to multiple
adjacent circuit breakers (> 9 MCBs) and installation environment (T
a
30 degrees); variables may vary according to the use case. Both in-
rush current and continous current calculations are based on ABB S200 series circuit breakers. More specific information in ABB series
S200 circuit breaker documentation.
NOTE! Type C MCB’s are strongly recommended to use with LED lighting. Please see more details in “MCB information” document in each
driver product page in “downloads & links” section.
CONTINOUS CURRENT
