| Lamp Type |
Voltage |
Power(W) |
Diameter (mm) |
Length Max.
(mm) |
Beam Angle |
Lamp Life (h) |
Lamp Holder |
Luminous Intensity
(cd) |
Color Temp. |
| TC- DEL |
230 (V) |
10W
13W
18W
26W |
12mm
12mm 12mm 12mm |
100mm
125mm
145mm 165mm |
|
12000hrs
12000hrs
12000hrs 12000hrs |
G 24q
G 24q
G 24q
G 24q |
600
900
1200
1800 |
2700 k
4000 k
|
| TC-EL |
230 (V) |
7W
9W
11W |
12mm 12mm 12mm |
114mm 144mm 214mm |
|
12000hrs 12000 hrs 12000hrs |
2G 7
2G 7
2G 7 |
400
600
900 |
2700 k
4000 k |
| TC-L L |
230 (V) |
18W
24W
36W
40W
55W |
17mm 17mm 17mm 17mm 17mm |
217mm 317mm 411mm 533mm 533mm |
|
12000hrs 12000hrs 12000hrs 12000hrs 12000hrs |
2G 11
2G 11
2G 11
2G 11
2G 11 |
1200
1800
2900
3500
4800 |
2700 k
4000 k |
| HIT-DE |
230 (V) |
70W
150W |
20mm 23mm |
114mm 132mm |
|
6000hrs 6000hrs |
Rx 7S
Rx 7S |
5500
11250 |
4200 k
3000 k |
| HIT |
230 (V) |
35W
70W
150W |
25mm 25mm 25mm |
84mm 84mm 84mm |
|
6000hrs 6000hrs 6000hrs |
G 12
G 12
G 12 |
2400
5500 130000 |
3000 k
11250 |
| XENON |
24 (V) |
5W
10W |
10.5mm 10.5mm |
43.7mm 43.7mm |
|
20000hrs 20000hrs |
|
40
90 |
3000 k |
| QT-9 |
12 (V) |
5/10/20W |
9mm |
33mm |
|
3000hrs |
Gu 4 |
60,130,320 |
3000 k |
| QT-12 |
12 (V) |
10W
20W
35W
50W |
9mm
9mm 12mm 12mm |
33mm 33mm 44mm 44mm |
|
3000hrs 3000hrs 3000hrs 3000hrs |
Gy6.35 Gy6.35 Gy6.35 Gy6.35 |
130
320
600
930 |
3000 k
|
| QRCBC-35 |
12 (V) |
20W
35W |
36mm 36mm |
41mm 41mm |
10,30
10,30 |
4000hrs 4000hrs |
Gu 5.3 Gu 5.3 |
4500,700 7200,1350 |
3100 k |
| QRCBC-51 |
12 (V) |
20W
35W
50W |
51mm
51mm
51mm |
49mm
49mm
49mm |
10,24,
38,60
10,24,
38,60
10,24,
38,60 |
4000hrs
4000hrs
4000hrs |
Gu 5.3
Gu 5.3
Gu 5.3 |
6500, 1700, 800, 350
8000, 3100, 1500, 700
13000,4400, 2200, 1100 |
3100 k |
| QR-111 |
12 (V) |
75W
100W |
111mm 111mm 111mm
111mm 111mm 111mm |
57mm 58mm 55mm
57mm 58mm 55mm |
8
24
45
8
24
45 |
3000hrs 3000hrs 3000hrs
3000hrs 3000hrs 3000hrs |
Gx5.3 Gx5.3 Gx5.3
Gx5.3 Gx5.3 Gx5.3 |
30000
5300
1700
48000
8500
2800 |
3000 k
3000 k
|
| QT-32 |
12 (V) |
100W 150W 250W |
32mm 32mm 32mm |
105mm 105mm 105mm |
|
2000hrs 2000hrs 2000hrs |
E-27
E-27
E-27 |
1500
2500
4200 |
3000 k |
| QT DE-12 |
230 (V) |
150W 300W 500W |
11mm 11mm 11mm |
114mm 114mm 114mm |
|
2000hrs 2000hrs 2000hrs |
R 7S
R 7S
R 7S |
2600
5000
9500 |
3000 k |
| HALOPAR-20 Spot |
230 (V) |
50W |
64.5mm |
91mm |
10 |
2000hrs |
E-27 |
3200 |
2700 k |
| HALOPAR-30 Spot |
230 (V) |
75W |
97mm |
90.5mm |
10 |
2000hrs |
E-27 |
7500 |
2700 k |
| HALOPAR-38 FLOOD |
230 (V) |
60W
80W
120W |
122mm 122mm 122mm |
136mm 136mm 136mm |
30
30
30 |
2000hrs 2000hrs 2000hrs |
E-27
E-27
E-27 |
1200
1800
3100 |
2700 k |
| HALOPAR-56 FLOOD/SPOT & WIDE FLOOD |
230 (V) |
300W 300W
300W |
179mm 179mm 179mm |
127mm 127mm
127mm |
30
30
30 |
2000hrs 2000hrs
2000hrs |
GX16d GX16d GX16d |
40000
22000
9000 |
2700 k |
| GLS/A-60 |
230 (V) |
60W 100W |
60mm
60mm |
105mm 105mm |
|
1000hrs 1000hrs |
E-27
E-27 |
730
1380 |
2700 k |
| LED-35R |
12VDC |
1.5 |
35 |
10 |
30deg. |
1,00,000 |
Terminal |
- |
All |
| LED-50R |
12VDC |
2.0 |
50 |
10 |
30deg. |
1,00,000 |
Terminal |
- |
All |
| LED-250 |
12VDC |
5.0 |
10 |
250 |
30deg. |
1,00,000 |
Terminal |
- |
All |
| LED-35 |
12VDC |
0.6 |
10 |
35 |
30deg. |
1,00,000 |
Terminal |
- |
All |
|
Lighting levels |
| |
Extract from CIBSE Code 1994
Recommended service illuminance values |
| |
Area |
Lux |
| |
office, clerical work station |
500 |
| |
conference room |
500 |
| |
assembly hall, banking hall |
300 |
| |
general entrance hall, waiting room |
200 |
| |
enquiry desk |
500 |
| |
hotel entrance hall |
100 |
| |
reception desk |
300 |
| |
cinema foyer |
200 |
| |
auditorium |
100 |
| |
lecture theatre |
300 |
| |
cafeteria |
200 |
| |
bar, restaurant, lounge |
50-200 |
| |
rest room |
150 |
| |
cloakroom |
100 |
| |
corridor |
100 |
| |
shopping precinct |
150 |
| |
shop |
500 |
| |
library |
300-500 |
| |
museum (depends on exhibits) |
50-300 |
| |
church |
150-300 |
|
Uniformity and layouts
The CIBSE Code recommends that the uniformity ratio for general task
lighting - the ratio of maximum illuminance to average illuminance - should
be at least 0.8. Illuminance uniformity is largely determined by the
luminaire light distribution and the spacing between luminaires. The spacing
to height ratio (SHR) is the maximum permissible to ensure acceptably even
lighting. It is based on the minimum illuminance in the centre of the
luminaire arrangement being 70% of the illuminance directly below one
luminaire.
In practice this limit of 0.7 is compatible with the 0.8 requirement. The
luminaires nearest to the walls are normally spaced from them by half of the
spacing between luminaires.
Light loss factor
Light loss factor refers to the reduction in light level due to soiling and
lamp deterioration.
Glare
Category 1 for Intense VDT use (55 o ) specified for areas of limited space
with a high number of VTDs, where the VDT is used intensively for long
periods and errors are critical.
Category 2 for General VDT use (65 o ) specified for areas with widespread
VDT units, including those which have one terminal per desk or a few which
are used continually.
Category 3 for Minimal VST use (75 o ) recommended for areas where VDTs may
be used only casually and where the density is fairly low. The three
categories have luminance limitations above 55 o , 65 o and 75 o
respectively to the downward vertical. Above these angles the average
luminance does not exceed 200cd/m 2 which is regarded as an acceptable
level.
Lighting Glossary
THIS GLOSSARY IS INTENDED TO ASSIST THE LIGHTING DESIGNER BY PROVIDING SHORT
DESCRIPTIONS OF THE
MOST IMPORTANT AND FREQUENTLY USED TECHNICAL TERMS FOUND IN THIS CATALOGUE.
Ballast lumen factor BLF (%)
Refers to the ratio of light output from the lamp on emergency operation to
the nominal light output.
Candela (cd)
The unit of luminous intensity Colour rendering index Ra(%)
A measure of the degree to which the colour rendition of a light source
differs on average from that of the lamp. At Ra(8) the illuminant
(perceived) colour shift of eight reference colours is measured as a
percentage and averaged to give one number. Values of 100 - 90 are good, 90
- 80 less good and lamps with Ra’s below 80 should not be used where colour
rendition is key.
Colour temperature T c(K)
Black bodies when heated to sufficiently high temperatures emit red light,
when the temperature is increased further the emitted light becomes white.
The colour co-ordinates derived from this heated black body (a full
spectral, or perfect radiator) when plotted on a diagram lie on a smooth
curve known as the full radiator locus, and are shown on the CIE Chromacity
Diagram.
The colour appearance of a given light source can be compared to a position
of the full radiator locus by reference to its colour temperature, and is
generally quoted in degrees Kelvin.
Emergency lighting
Lighting provided for when mains lighting installation fails. With
decentralised emergency lighting the electronics and battery are installed
in a separate unit in each fitting; with central emergency lighting several
fittings can be connected to one power supply. ‘Maintained’ systems allow
the lamp to be switched on and off and come on or stay on if the power
fails. In ‘non-maintained’ systems the lamp only comes on if the power
supply fails.
Emergency lighting design lumen (ELDL)
ELDL indicates the guaranteed light output from a lamp on emergency
operation. It is used when calculating the number of fittings required with
the lumen method. When calculating for emergency lighting, the wall, ceiling
and floor reflectances must be set at zero.
Glare
Glare is the discomfort caused by different levels in luminance and can tire
the eyes.
Light
Light Electromagnetic radiation with a wavelength between 380-720nm.
Ultraviolet light has a wavelength of less that 380nm whilst infrared
light’s is greater than 720nm.
Lighting level
The incidence of light flux on a surface per unit of area, measured in lux.
There is a difference between the vertical and horizontal lighting level.
Lighting output ratio (LOR)
The ratio of the luminaire light output to lamp light output. The efficiency
of the luminaire.
Lumen (lm)
Unit of luminous flux used to describe a quantity of light emitted by a
source and received by a surface.
Luminaire efficacy
How well a luminaire uses the luminous flux of the lamp. It is indicated in
the lighting graphs by LOR (light output ratio).
Luminance
The measure of brilliance with which the eye perceives an illuminated
surface from a certain direction. The luminous intensity per unit of visible
surface of light source (direct) or an illuminated surface (reflection).
Luminance is indicated in candelas per square meter (cd/ m 2 ).
Luminous efficacy (lm/W)
Indicates how efficiently a lamp converts electrical energy to light.
Luminous flux
The total light output of a lamp measured in lumen (lm).
Luminous intensity
The power of a source or illuminated surface to emit light in a particular
direction, measured in candela.
Lux (lux)
The unit of illuminance, equal to one lumen per square meter (lm/m 2)
Maintenance factor
Lighting levels decrease in time due to soiling and lamp deterioration. Mean
values are 0.7 for a normal interior and 0.8 for a very clean one.
Performance cone
Shows whether the luminaire emits a narrow or wide beam of light and
indicates the lighting level measured at the centre of the beam. The beam
diameter and angle indicate where half the light is measured in relation to
the centre of the beam. It gives only a rough guide of the size of beams
narrower than 40 o .
Polar curve
The graphic representation of the luminous intensity in different direction.
If two curves are plotted, the distributions are in two vertical planes. The
value is indicated in candelas per 1000 lumen (cd/klm) and therefore must be
multiplied by the nominal luminous flux of the lamps used. The polar curve
graph also indicates luminaire efficiency.
Power factor correction
The electricity supply companies require that the power factor at which the
supply is used shall be maintained at not less that 0.9 lagging, on average
between one meter reading and the next. For any given wave shape, power
factor is defined as the ratio of Watts/ (volts rms x amps rms).
Low power factor increases the KVA demand for the supply, reduces the useful
load that can be safely handled by cables and distribution equipment, and in
some cases can attract additional tariff penalties.
Lamp circuits which incorporate a choke, leakage reactance transformer, or
an electronic ballast can have low power factors, often between 0.3 and 0.6.
The low power factor from these circuits can be corrected by the addition of
a compensation capacitor. These can be placed at the central point of the
supply, locally for each group of luminaires, or integral within each
luminaire.
Some authority who utilise mains signalling may require an additional filter
choke in series with the power factor capacitor.
Room index K
An index relating to the dimensions of a room influencing the
amount of light emitted from the fitting onto the working surface.
K= a x b/ h x (a+b)
where: a = room light
b= room width
h = height between the luminaire and working surface.
Shielding angle (º)
The horizontally measured angle from which the lamp or reflection from it in
the reflector is no longer visible. It is an important measure of glare and,
therefore, light comfort.
Spacing to height ratio (SHR)
Used to determine the maximum distance between luminaires. The ratio of the
distance between adjacent luminaires to the distance between the luminaire
plane and the horizontal working plane.
Uniformity ratio of illuminance
This indicates the degree of evenness of the light on the working surface
and is shown as a ratio of the minimum to the mean lighting level on a
surface. The lower the number the more disturbing the light. In practice 0.8
or 0.7 is regarded as sufficient.
Utilance
The ratio of the luminous flux which the reference surface receives to the
sum of the luminous fluxes of the luminaires present in the room. This is
influenced by the form of light distribution, the shape of the room, its
reflection factors and the location of the luminaires in relation to the
working surface.
Utilisation factor
The ratio of the light flux which the reference surface receives to the
totalled luminous fluxes of the installation lamps. This is influenced by
the shape of the room and selected luminaire and is expressed in the form of
UF table. The utilisation factor is the product of luminaire efficiency and
utilance.
Principal of lighting design
One of the most important aspects of lighting design is to determine the
number of luminaires required, based on a given illuminance value. The room
utilisation factor method is a sufficiently accurate and relatively simple
procedure for finding the required number of luminaires (n):
n = 1.25 x E x a x b / Φ x ηLB x ηR
Room utilisation factor method
Status of the lighting system
The planning factor takes into account the reduction in luminous flux
and soiling of the light fittings. Planning factor - 1.25
Rated illuminance E
According to DIN 5035, Part 2 for the room in question, depending on the
type of activity.
Room factor k
The room factor k makes allowance for the shape of the room:
k = axb/h(a+b)
a = Room width
b = Room length
H = Room height
h = H - 0.85 m
Luminous flux Φ
Taken from the lamp catalogue, depending on the lamp to be used in the
luminaire.
Luminaire efficiency ηLB
Taken from the luminaire catalogue, depending on the luminaire selected.
Room utilisation factor ηR
From the LiTG table for the selected luminaire on the basis of the
classification (e.g. A40.2). The effect of light distribution in the room is
covered by the value from the appropriate table. Table 1 contains the room
utilisation factor R as a percentage against the room factor (k), based on a
combination of the reflectances of the ceilings, walls and work surfaces (of
floors).
Basis:
Reflectances p
The reflective properties of the room surfaces are measured in terms of the
reflectances of the ceilings, walls and work surfaces (or floors).
Reflectances can be determined with the aid of reflectance table. |
| Luminaries ceiling mounted Reflectances p |
| Ceiling |
0.8 |
0.8 |
0.8 |
0.5 |
0.5 |
0.8 |
0.8 |
0.5 |
0.5 |
0.3 |
| Wall |
0.8 |
0.5 |
0.3 |
0.5 |
0.3 |
0.8 |
0.3 |
0.5 |
0.3 |
0.3 |
| Surface |
0.3 |
0.3 |
0.3 |
0.3 |
0.3 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
Room factor k |
| 0.6 |
73 |
46 |
37 |
44 |
36 |
66 |
36 |
42 |
35 |
35 |
| 0.8 |
82 |
57 |
47 |
54 |
46 |
74 |
45 |
51 |
44 |
44 |
| 1.0 |
91 |
66 |
56 |
62 |
54 |
80 |
53 |
59 |
52 |
51 |
| 1.25 |
98 |
75 |
65 |
70 |
62 |
85 |
61 |
66 |
60 |
59 |
| 1.5 |
103 |
82 |
73 |
76 |
69 |
89 |
67 |
72 |
66 |
65 |
| 2.0 |
109 |
91 |
82 |
84 |
78 |
94 |
75 |
78 |
73 |
72 |
| 2.5 |
114 |
98 |
90 |
90 |
84 |
97 |
81 |
83 |
79 |
77 |
| 3.0 |
117 |
103 |
96 |
95 |
90 |
99 |
86 |
87 |
83 |
82 |
| 4.0 |
120 |
109 |
103 |
100 |
95 |
11 |
91 |
91 |
88 |
86 |
| 5.0 |
122 |
107 |
103 |
98 |
103 |
93 |
103 |
93 |
91 |
89 |
|
This table shows the room utilisation factor for numerous combinations of
room factors and reflectances (always assuming ideal dispersion). The
illuminance E required in a room of area a x b is achieved with n luminaires
that have an efficiency ηLB and with lamps with a luminous flux
Φ. |
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