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TECHNICAL GUIDE
Luminous flux / lifetime
First of all, the lifetime indicated for our products is not
based on the time until the product fails, but on the time until
at least 50% of the products emit more than 70% of the
initial flux.
The lifetime of our products is calculated according
to the lifetime of the key components:
The LED and critical electronic components.
We select our critical electronic components according to their
lifetime and nominal operating temperature so that the electronic
system functions during the entire product lifetime.
Flux maintenance diagram
Luminous flux (%)
105
95
85
75
65
55
45
1000
10 000
50 000
100 000
Time (hours)
The LED is tested for 6000 h (more than 8 months) at various temperatures
and readings are recorded every 1000 h. In this way, we obtain the LM80
of the LED. This enables us to calculate the TM21 of the product, i.e. the
expected flux decreases over time. We therefore obtain the result that
at operating temperature, 50% of the products emit more than 70% of
their initial flux after 50 000 h.
50 000 h
L70B50 → Ta = 25°C
It is in this way that the LED lifetime is defined.
Binning / range of LED colours
Chromatic diagram
During production, the LEDs produced have different colours
and voltages which vary considerably and which are random.
These characteristics are then measured to allow sorting of the
LEDs according to the performance range. Each range therefore
comprises LEDs which have similar colours, light intensities and
voltages.
The choice of LEDs in the MYLUM® luminaires, is the
result of extremely selective binning (LED colour range)
thus ensuring that the colour and intensity variation
between LEDs is not visible.
CCy
0.45
0.44
3000 K
0.43
3500 K
0.42
4000 K
0.41
0.40
4500 K
0.39
5000 K
0.38
5700 K
0.37
0.36
0.35
2700 K
6500 K
0.34
0.33
0.32
0.31
0.30 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38 0.39 0.40 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48 0.49 0.50
CCx
BBL
ANSI C78.377-2008 LED Standard
MYLUM®
TECHNICAL GUIDE
Level of lighting in
NF EN 12464-1 - Lighting of indoor work places (July 2011)
indoor work places
The standard NF EN 12 464-1 (lighting of indoor work places) indicates the maximum
UGR levels not to be exceeded and the minimum CRI for indoor lighting per zone, task
and activity.
MEAN LIGHTING LEVEL
TO BE MAINTAINED (lx)
UGR
Max. value
CRI (or Ra)
Min. value
Corridors and circulation zones
100
28
40
Stairwells and loading bays
150
25
40
Stores and warehouses
100
25
60
Shops, sales areas
300
22
80
Check-out zones
500
19
80
Public areas, entrance halls
100
22
80
Counters
300
22
80
Restaurants, hotels, reception desks, cash desks, caretaker zone
300
22
80
Kitchens
500
22
80
School buildings, classrooms in primary and secondary schools
500
19
80
Industrial drawing rooms
750
16
80
300
500
500
300
200
19
19
19
22
25
80
80
80
80
80
ZONES, TASKS, ACTIVITIES
Office lighting
- Filing rooms
- Typing pools, reading rooms
- CAD work stations
- Receptions
- Archives
Guide lighting
LED PANEL 600 x 600
Neutral White 4000 K
POWER
33 W
LUMEN
3350 lm
APPLICATION
Offices / Shops / Public areas /
Education / Health
NORMAL LUX
LEVEL
SIZE OF THE ROOM
Case study - room of 6 x 8 m
2
0
50 100 150 200 250 300 350 400 lx
Room height: 2,70 m
Coefficient for light reflection off walls:
/ Walls: 50%
/ Floor: 20%
Ceiling: 70%
Height of useful plane: 0,80 m
Peripheral margin taken at useful plane: 0,50 m
Maintenance factor: 0,90
INTENSE LUX
LEVEL
300 lx (mean luminosity) 500 lx (mean luminosity)
Length
(m)
Width
(m)
Surface
(m2)
4
4
16
2
4
Number of LED panel recommended
4
6
24
3
5
4
8
32
4
7
6
6
36
4
7
6
8
48
5*
9
8
8
64
7
11
*Case study: false colour rendering, room of 48 m2 with 300 lx at useful plane height
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TECHNICAL GUIDE
Protection index
The protection index IP defines the degree of protection of elements against penetration
of foreign bodies (1st number) and liquids (2nd number)
of luminaires against
solid or liquid bodies
(CEI 60529, NF EN 60529, NF C 20-010)
IPxx
1ST NUMBER: DEGREE OF PROTECTION OF LIVE ELEMENTS AGAINST
PENETRATION OF SOLIDS
DEGREES
IPxx
2ND NUMBER: DEGREE OF PROTECTION OF LIVE ELEMENTS AGAINST PENETRATION
OF LIQUIDS
DESCRIPTION
IP
DESCRIPTION
0
Not protected
IP X 0
No protection
1
Protection against solid bodies larger than 50 mm
IP X 1
Protection against vertical water droplets (condensation)
2
Protection against solid bodies larger than 12 mm
IP X 2
Protected against water droplets up to 15° from vertical
3
Protection against solid bodies larger than 2.5 mm
IP X 3
Protected against rain water up to 60° from vertical
4
Protection against solid bodies larger than 1 mm
IP X 4
Protected against water splashing from all directions
5
Total protection against dust penetration
IP X 5
Protected against spray water from all directions
6
Total protection against dust penetration
IP X 6
Protected against water splashing similar to green water
IP X 7
Protected against the effects of immersion
IP X 8
Protected against the effects of prolonged immersion under pressure
Definition of appliances accepted according to the protection volumes: NF C 15-100/A2
Installation in humid zone
VOLUME
DISTANCE / SITE
SEALING INDEX
ACCEPTABLE ELECTRICAL APPLIANCES
ELECTRICAL
CLASS
0
Humid volumes (bathtub, wash hand basin, sink,
shower)
IP X 7
All appliances prohibited except S.E.L.V (12V AC max) and
transformer installed outside volumes 0, 1 and 2
III
1
Volume above zone 0 up to 2.25 m in height
IP X 5
All appliances prohibited except S.E.L.V (12V AC max) boiler
and transformer installed outside volumes 0, 1 and 2
III
2
Volume within a perimeter of 60 cm around zone 0
and up to 2.25 m in height
IP X 4
All appliances in volumes 0 and 1 are accepted
I and II
3
Volume outside a perimeter of 60 cm around zone
0 up to 2.40 m for the limits of volume 2 and 75 cm
above volumes 1 and 2
IP X 1
or
IP X 3
All appliances in volumes 0, 1 and 2 are accepted
I anD II
Side view:
Outside volume
3 m / finished floor level
Outside volume
Bathroom
IP X 4
Volume 3
0,75 m
IP X 1 or IP X 3
2,40m
Volume 2
Volume 1
IP X 4
IP X 5
0,60m
0,60m
Volume 2
2,25 m / finished floor level
or bottom of bathtub if this
is located above the finished
floor level
IP X 4
Wash hand
basin
MYLUM®
Volume 2
Volume 0
IP X 7
Volume 0
IP X 7
Space under bathtub
Volume 1 or Volume 3
TECHNICAL GUIDE
Shock resistance index
The resistance index IK defines the degree of protection of
appliances against mechanical impact damage (EN 62262).
IKxx
weight
height
Index of protection against
electric shock
SHOCK RESISTANCE
WEIGHT / DROP HEIGHT
IK 1 / 0.140 joule
0.25 Kg : 56 mm
IK 2 / 0.20 joule
0.25 Kg : 80 mm
IK 3 / 0.35 joule
0.25 Kg : 140 mm
IK 4 / 0.50 joule
0.25 Kg : 200 mm
IK 5 / 0.70 joule
0.25 Kg : 280 mm
IK 6 / 1 joule
0.25 Kg : 400 mm
IK 7 / 2 joules
0.50 Kg : 400 mm
IK 8 / 5 joules
1.70 Kg : 300 mm
IK 9 / 10 joules
5.00 Kg : 200 mm
IK 10 / 20 joules
5.00 Kg : 400 mm
IK 10+ / 50 joules
10.00 Kg : 500 mm
CLASS I
General isolation luminaires with a system linking
all accessible mechanical parts to a ground
conductor.
CLASS II
Luminaires for which the accessible elements
are separated from the live elements by a double
isolation or reinforced isolation.
CLASS III
Luminaires supplied at safety extra low voltage
(S.E.L.V.) which does not exceed 50 V (effective
alternating current value).
The electrical protection classes are defined in particular in
accordance with standard IEC 60590-1
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