The Hong Kong Voluntary Energy 
Efficiency Labelling Scheme for 
 
 Light Emitting Diode (LED) Lamp 
 
 
 2011 (Draft) 
 
 
 
 
 
 
 
 
 
Electrical and Mechanical Services 
Department 
3 Kai Shing Street, Kowloon, Hong Kong 
Homepage: http://www.emsd.gov.hk  
 
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme  for LED Lamps   
 
 Preface 
 
With the continual improvement in Light Emitting Di ode (LED) technology and performance, 
LED has become one of the lighting sources of choic e for general lighting applications.  
However, the use of LED in general lighting applica tions has only appeared in the past few 
years and the international testing standard for LE D lamps on energy performance is still under 
development at present.  In view of this, the Hong Kong Voluntary Energy Efficiency Labelling 
Scheme for LED lamps (the scheme) is developed with  reference to currently available, relevant 
international pre-standards, regional/national stan dards and performance requirements in the 
labelling schemes of other countries.  It is noted that the testing of the claimed life of LED 
lamps will take years to complete.  As there is sti ll no available international testing method to 
accelerate the life test, this scheme will only ass ess the energy performance and life up to 
6,000 hours. 
 
It is expected that, with the technology developmen t and publication of more and more of the 
international testing standards of LED lamps, the p erformance requirements in the Voluntary 
Scheme will be updated and revised from time to tim e.  We will keep track of the development 
and make necessary updating/amendment at appropriat e time.  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme  for LED Lamps   
 
 CONTENTS 
Section Section Section Section    Title Title Title Title                Page Page Page Page  
1. Purpose ---------------------------------------- --------------------------------------------------- ----- 2 
2. Background ------------------------------------- --------------------------------------------------- ----- 2 
3. Scope ------------------------------------------ --------------------------------------------------- ------ 3  
4. Definitions ------------------------------------ --------------------------------------------------- ------ 4 
5. Energy Efficiency Standards ----------------------- -------------------------------------------------  8 
6. Test Standards ------------------------------------ --------------------------------------------------- ---  16  
7. Energy Label -------------------------------------- --------------------------------------------------- ---  17  
8. Testing Facilities, Laboratories and Accreditation Bodies --------------------------------------  18  
9. Registration and Participation -------------------- --------------------------------------------------  19  
10. Legal Provisions ---------------------------------- --------------------------------------------------- --  24  
11. Compliance Monitoring and Inspection -------------- --------------------------------------------  24  
12. Complaints and Appeal ------------------------- --------------------------------------------------- -- 25 
13. Maintenance of Scheme ------------------------- --------------------------------------------------- - 26 
14. Future Development ---------------------------- --------------------------------------------------- --- 27 
 
LIST OF LIST OF LIST OF LIST OF TABLE TABLE TABLE TABLE  
Table 1: Rated CCT Categories --------------------- --------------------------------------------------- ------ 8 
Table 2: Minimum Allowable Power Factor for LED Lam p with Integral Driver -------------------- 9 
Table 3: Minimum Allowable Lumious Efficacy for Non -Directional LED Lamps with Integral 
Driver -------------------------------------------- --------------------------------------------------- -------------- 9 
Table 4: Rated CCT Categories --------------------- --------------------------------------------------- ------ 10 
Table 5: Minimum Allowable Power Factor for LED Lam p with Integral Driver -------------------- 10 
Table 6: Minimum Allowable Lumious Efficacy for Dir ectional LED Lamps with Integral Driver 
--------------------------------------------------- --------------------------------------------------- --------------- 11 
Table 7: Minimum Allowable Luminous Efficacy for Di rectional LED Lamps with Integral 
Driver -------------------------------------------- --------------------------------------------------- -------------- 11 
Table 8: Rated CCT Categories --------------------- --------------------------------------------------- ---- 12  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme  for LED Lamps   
 
 Table 9: Minimum Allowable Lumious Efficacy for Dir ectional LED Lamps with Non-integral 
Driver -------------------------------------------- --------------------------------------------------- -------------- 13 
Table 10: Minimum Allowable Luminous Efficacy for D irectional LED Lamps with Non-
integral Driver ----------------------------------- --------------------------------------------------- ------------- 14 
Table 11: Minimum Number of Samples for Tests ----- ------------------------------------------------- 1 4 
Table 12: Determination of Test Results ----------- --------------------------------------------------- ---- 15 
  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 ANNEXES  ANNEXES  ANNEXES  ANNEXES      
1 ENERGY LABEL FORMAT 
2 PROFORMA LETTER OF INVITATION 
3 PROFORMA LETTER OF APPLICATION 
4 INFORMATION TO BE SUBMITTED TO ENERGY EFFICIENCY OFFICE 
5 PROFORMA LETTER OF ACCEPTANCE 
6 PROFORMA LETTER OF REJECTION 
7   FLOW CHART FOR REGISTRATION 
8   MINIMUM LUMINOUS FLUX FOR LED LAMP TO CLAIM EQU IVALENCE TO INCANDESCENT 
LAMP 
9 MINIMUM CENTER BEAM INTENSITY FOR PAR AND MR16 LE D LAMPS TO CLAIM 
EQUIVALENCE TO EXISTING REFLECTOR LAMPS 
10  SAMPLE OF DECLARATION LETTER FROM MANUFACTURER 
      
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 1. Purpose 
This set of document is intended to give a general description on the Hong Kong 
Voluntary Energy Efficiency Labelling Scheme for LE D Lamps. 
 
 
2. Background 
2.1 The Energy Efficiency Labelling Scheme (EELS) i s an energy conservation initiative that 
the Government of the Hong Kong Special Administrat ive Region (HKSAR) has adopted.  
Under the EELS, some common types of household appl iances and office equipment 
will incorporate an energy label that serves to inf orm consumers of the product's 
energy consumption and efficiency.  Consumers shoul d then be able to take those 
factors into account in making their purchasing dec ision. 
 
2.2 The concept of EELS has been developed and impl emented in several forms and in 
different stages of development.  In some countries , as well as in Hong Kong, it is a 
compulsory requirement for certain kinds of electri cal appliances to be provided with an 
energy label before they can be put on the market.  The labelling requirements may 
apply to equipment such as household refrigerators,  freezers, washing machines, room 
coolers, clothes dryers, compact fluorescent lamp, storage water heaters, etc. The EELS 
generally aims to achieve the following: 
• greater public awareness of energy conservation an d environmental 
improvement needs; 
• provision of readily available, pre-purchase infor mation on energy consumption 
and efficiency data, where applicable, to enable or dinary consumers to select 
more energy efficient products; 
• stimulation to the manufacturers/market for phasin g out less energy efficient 
models; and 
• actual energy savings and environmental improvemen ts, etc. 
 
2.3 Hong Kong also aims at achieving the above obje ctives and the EELS now covers 
eighteen types of household appliances and office e quipment.  Ten types of which are 
electrical appliances and seven types of office equ ipment. There is also one type of gas 
appliance for domestic gas instantaneous water heat ers. The scope of EELS has also 
been extended to cover petrol passenger cars.  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 3. Scope 
3.1 The scheme will only apply to the manufacturers  and importers (local agents, retailers 
and the related parties) who have participated in t he voluntary scheme. 
 
3.2 The scheme commenced from XX XX XX XX XX XX XX XX    2011 2011 2011 2011 , and will expire on 31 December 31 December 31 December 31 December 201 201 201 20133 33 
when re-registration is necessary. 
 
3.3 The scope of application covers all new registe red appliances under the scope of the 
Scheme to be sold in Hong Kong with effect from the  date that is declared by the participant 
but does not cover second-hand products, products a lready in use, under trans-shipment or 
export, etc. 
 
3.4 The scheme will be operated as a ‘Recognition T ype’ labelling system.  All participating 
appliances will be registered under this scheme pro vided that they have met the performance 
requirement specified in the scheme. 
 
3.5 The provision of this scheme shall apply to dir ectional and non-directional LED lamps, 
and is intended for general lighting purposes havin g the following characteristics: 
(a) those with a rated voltage up to 240 volts AC o r DC;  
(b) those with a rated frequency of 50 Hz for AC; 
(c) those with a rated lamp wattage up to 60 watts;  and 
(d) those with a rated CCT value from 2700K to 6500 K. 
 
3.6 The scheme shall apply to LED lamps designed wi th dimming or non-dimming 
operations. 
 
3.7 The scheme does not cover (i) LED tubes, and (i i) LED lamps that intentionally produce 
tinted or coloured light neither does it cover orga nic LED (OLED).  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 4. Definitions 
Unless otherwise specified, the following definitio ns shall apply throughout this document:  
 
Authority means the Electrical & Mechanical Service s Department, the 
Government of the Hong Kong Special Administrative Region (HKSAR).  
  
beam angle 
 means the angle between two imaginary lines in a pl ane through the 
optical beam axis, such that these lines pass throu gh the centre of the 
front face of the lamp and through points at which the luminous 
intensity is 50% of the centre beam intensity. 
  
center beam 
intensity means the value of the luminous intensity measured on the optical 
beam axis. 
  
CIE means International Commission on Illumination.  
  
CISPR means Comité International Spécial des Pertur bations Radioélectriques.  
  
Colour 
Rendering 
Index (CRI) means an index, which is defined in terms of a comp arison of the 
spectral tri-stimulus values of the objects under t est illumination and 
standard illumination according to the recommendati ons of CIE 
publication No. 13.3-1995. 
  
Correlated 
Colour 
Temperature 
(CCT) means the temperature of the Planckian radiator who se perceived 
colour most closely resembles that of a given stimu lus at the same 
brightness and under specified viewing conditions. 
  
directional 
lamp means a lamp having at least 80% of light output wi thin a solid angle 
of π sr (corresponding to a cone with angle of 120 degr ee). 
  
Director means the Director of Electrical & Mechani cal Services Department, the 
Government of the Hong Kong Special Administrative Region. 
  
Duv means the closest distance from the Planckian l ocus on the (u’, 2/3 v’) 
diagram, with + sign for above and – sign for below  the Planckian 
locus. 
  
General CRI 
(Ra) means the arithmetical mean of the eight special CR Is for the CIE-1974 
test-colour samples Nos 1 to 8. 
   
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 Government  means the Government of the Hong Kong Special Admin istrative 
Region.  
  
IEC means International Electrotechnical Commission . 
  
initial value 
 means a photometric and electrical characteristics at the end of the 
stabilization time. 
  
inspecting 
officer means the officer authorized by the Director to car ry out inspection on 
appliances. 
  
label means the energy label as described in Sectio n 7 of this document. 
  
LED driver means a power source with integral Light  Emitting Diode (LED) control 
circuitry designed to meet the specific requirement s of a LED lamp or a 
LED array. 
  
LED lamp means a lamp, incorporating a Light Emitti ng Diode (LED) light source 
and any additional elements necessary for stable op eration of the light 
source, provided with a lamp cap conforming IEC 600 61-1, which 
cannot be dismantled without permanent damages. 
  
LED lamp, 
integral  means a Light Emitting Diode (LED) lamp intended to  operate directly 
on mains voltage. 
 
LED lamp, 
non-integral  means a Light Emitting Diode (LED) lamp intended fo r connection to an 
LED driver and cannot be operated directly on mains  voltage. 
  
IES means Illuminating Engineering Society of North  America. 
  
lumen 
maintenance  means a luminous flux at a given time in the life o f a LED-lamp divided 
by the initial value of the luminous flux of the la mp and expressed as a 
percentage of the initial luminous flux. 
  
luminous 
efficacy 
(lm/W) means a ratio of luminous flux emitted by a lamp to  the electrical 
power consumed by the lamp. 
  
luminous 
flux (lm) means a quantitative measure of light emitted by a light source. The 
quantity is derived from radiant flux (power in wat ts) by evaluating the 
radiation in accordance with the spectral sensitivi ty of the standard eye 
as described by the CIE Standard Photometric Observ er.  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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luminous 
intensity (cd)  means the quotient of the luminous flux dΦv leaving the source and 
propagated in the element of solid angle dΩ containing the given 
direction, by the element of solid angle 
  
non-
directional 
lamp means a lamp that is not a “directional lamp”. 
  
optical beam 
axis means the axis about which the luminous intensity d istribution is 
substantially symmetrical. 
  
participant means the manufacturers, importers or t he retailers of appliance 
participating in the scheme. 
  
power factor  means a ratio of the measured active input power to  the product of 
the supply voltage (r.m.s.) and the supply current (r.m.s.). 
  
rated beam 
angle means the beam angle declared by participant. 
  
rated CCT means the CCT declared by participant. 
  
rated center 
beam 
intensity means the center beam intensity declared by partici pant. 
  
rated 
frequency means the frequency marked on the lamp or declared by participant. 
  
rated 
General CRI 
(Ra) means the General CRI (Ra) declared by participant.  
  
rated lamp 
life 
 means a length of time during which a complete LED lamp provides 
more than 70%  of the rated luminous flux, published in combinati on 
with the failure rate, as declared by participant. 
  
rated lamp 
voltage means the voltage marked on the LED lamp or declare d by participant.  
   
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 rated lamp 
wattage means the wattage marked on the LED lamp or declare d by participant.  
  
recognized 
laboratory means a laboratory that compiles with the requireme nts as stated in 
Section 8 of this document and is acceptable to the  Authority for 
carrying out tests and issuing test reports on LED lamps. 
  
scheme means the Hong Kong Voluntary Energy Efficie ncy Labelling Scheme 
for LED Lamps. 
  
stabilisation 
time  means the time which the LED lamp requires to obtai n stable thermal 
conditions 
  
target lamp means the lamp to be replaced by the LE D lamp. 
   
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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5. Energy Efficiency Standards  
 
Non-directional LED Lamps with Integral Driver - Sp ecific Performance Requirements 
5.1 The LED lamps are needed to meet the following performance requirements: 
(a) The measured General CRI (Ra) values (both init ial and at 6,000 hours) shall be equal to 
or greater than 80, and shall not have decreased by  more than 5 points from the rated General 
CRI (Ra) value. 
(b) The LED lamp must have one of the rated Correla ted Colour Temperatures (CCTs) 
including 2700K, 3000K, 3500K, 4000K, 4500K, 5000K,  5700K, 6500K and flexible CCT 
consistent with the 7-step chromaticity quadrangles  and Duv tolerances as indicated in Table 1 
below. The measured CCT and Duv (both initial and a t 6,000 hours) shall be within the 
tolerances of target CCT and target Duv of the sele cted rated CCT.  
 
Table 1: Rated CCT Categories 
Rated CCT Target CCT and tolerance 
(K) Target Duv and tolerance 
2700 K 2725 ± 145 0.000 ± 0.006 
3000 K 3045 ± 175 0.000 ± 0.006 
3500 K 3465 ± 245 0.000 ± 0.006 
4000 K 3985 ± 275 0.001 ± 0.006 
4500 K 4503 ± 243 0.001 ± 0.006 
5000 K 5028 ± 283 0.002 ± 0.006 
5700 K 5665 ± 355 0.002 ± 0.006 
6500 K 6530 ± 510 0.003 ± 0.006 
Flexible CCT 
(2700-6500 K) T 1)  ± ∆T 2)  Duv 3)  ± 0.006 
 
i)  T is chosen to be at 100 K steps (2800, 2900,..., 6 400 K) excluding those 
eight nominal CCTs listed in Table 1. 
ii)  ∆T is given by ∆T = 0.0000108 ×T2+0.0262xT+8.  
iii)  Duv is given by Duv = 57700x(1/T) 2–44.6 ×(1/T)+0.0085.   
 
(c) The change of chromaticity (at initial and 6,00 0 hours) shall be within 0.007 on the CIE 
1976 (u’, v’) diagram. 
(d) For the LED lamp with integral LED driver, the measured power factor (both initial and 
at 6,000 hours) shall be equal to or greater than t he corresponding minimum allowable values 
as indicated in Table 2 below.  
  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 Table 2: Minimum Allowable Power Factor for LED Lam p with Integral Driver 
Rated Lamp Wattage (Lw) Minimum Allowable Power Fac tor 
Lw ≤5 W 0.5 
5W < Lw ≤25 W 0.7 
Lw > 25 W 0.9 
  
(e) The measured initial power consumption by the L ED lamp shall be neither less than 
90% nor greater than 110%  of the rated lamp wattage. 
(f) The LED lamp shall be subjected to supply volta ge switching test as follow: 
At test voltage the lamp (inclusive of the LED driv er) shall be switched on and off for 30 
seconds. The cycling shall be repeated for 10,000 t imes or a number equal to half of the rated 
lamp life (hours), whichever is greater; 
At the end of the above test, the LED lamp shall op erate and remain alight for 15 minutes. 
(g) The measured average lumen maintenance at 6,000  hours shall be equal to or greater 
than 90% . 
(h) The measured luminous efficacy shall be equal t o or greater than the corresponding 
minimum allowable value as indicated in Table 3 bel ow. 
 
Table 3: Minimum Allowable Luminous Efficacy for No n-Directional LED Lamps with Integral 
Driver 
Rated Lamp Wattage (Lw) Minimum Allowable Luminous Efficacy (lm/W) 
Lw < 10 W 50 
Lw ≥ 10 W 55 
 
Non-Directional LED lamps with Integral Driver - Ad ditional Performance Requirements for LED 
Lamp without stating any Direct Comparison with Exi sting Incandescent Lamp 
(i) In addition to the specific performance require ments, the measured initial luminous flux 
of non-directional LED lamp shall be equal to or gr eater than 90% of the rated luminous flux. 
 
Non-Directional LED lamps with Integral Driver - Ad ditional Performance Requirements for the 
LED Lamp stating any Direct Comparison with Existin g Incandescent Lamp 
(j) In addition to the specific performance require ments, the measured initial luminous flux 
of non-directional LED lamp shall be equal to or gr eater than 90% of the rated luminous flux; 
and the luminous flux of the LED lamp shall exceed the value (lm) as stated in the table in 
Annex 8. 
 
Directional LED Lamps with Integral Driver - Specif ic Performance Requirements 
5.2 The LED lamps are needed to meet the following performance requirements: 
(a) The measured General CRI (Ra) values (both init ial and at 6,000 hours) shall be equal to 
or greater than 80, and shall not have decreased by  more than 5 points from the rated General 
CRI (Ra) value.  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 (b) The LED lamp must have one of the rated Correla ted Colour Temperatures (CCTs) 
including 2700K, 3000K, 3500K, 4000K, 4500K, 5000K,  5700K, 6500K and flexible CCT 
consistent with the 7-step chromaticity quadrangles  and Duv tolerances as indicated in Table 4 
below. The measured CCT and Duv (both initial and a t 6,000 hours) shall be within the 
tolerances of target CCT and target Duv of the sele cted rated CCT.  
 
Table 4: Rated CCT Categories 
Rated CCT Target CCT and tolerance 
(K) Target Duv and tolerance 
2700 K 2725 ± 145 0.000 ± 0.006 
3000 K 3045 ± 175 0.000 ± 0.006 
3500 K 3465 ± 245 0.000 ± 0.006 
4000 K 3985 ± 275 0.001 ± 0.006 
4500 K 4503 ± 243 0.001 ± 0.006 
5000 K 5028 ± 283 0.002 ± 0.006 
5700 K 5665 ± 355 0.002 ± 0.006 
6500 K 6530 ± 510 0.003 ± 0.006 
Flexible CCT 
(2700-6500 K) T 1)  ± ∆T 2)  Duv 3)  ± 0.006 
 
i) T is chosen to be at 100 K steps (2800, 2900,... , 6400 K) excluding those eight 
nominal CCTs listed in Table 4.  
ii)  ∆T is given by ∆T = 0.0000108 ×T2+0.0262xT+8.  
iii)  Duv is given by Duv = 57700x(1/T) 2–44.6 ×(1/T)+0.0085. 
 
(c) The change of chromaticity (at initial and 6,00 0 hours) shall be within 0.007 on the CIE 
1976 (u’, v’) diagram. 
(d) For the LED lamp with integral LED driver, the measured power factor (both initial and 
at 6,000 hours) shall be equal to or greater than t he corresponding minimum allowable values 
as indicated in Table 5 below. 
 
Table 5: Minimum Allowable Power Factor for LED Lam p with Integral Driver 
Rated Lamp Wattage (Lw) Minimum Allowable Power Fac tor 
Lw ≤5 W 0.5 
5W < Lw ≤25 W 0.7 
Lw > 25 W 0.9 
 
(e) The measured initial power consumption by the L ED lamp shall be neither less than 
90% nor greater than 110%  of the rated lamp wattage.  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 (f) The LED lamp shall be subjected to supply volta ge switching test as follow: 
At test voltage the lamp (inclusive of the LED driv er) shall be switched on and off for 30 
seconds. The cycling shall be repeated for 10,000 t imes or a number equal to half of the rated 
lamp life (hours), whichever is greater; 
At the end of the above test, the LED lamp shall op erate and remain alight for 15 minutes. 
(g) The measured average lumen maintenance at 6,000  hours shall be equal to or greater 
than 90% . For recessed directional LED lamp (e.g. with GU10  base), the lamp should be 
mounted in simple recessed luminaries for testing. The assembly will be mounted in a test box 
made in accordance with Annex D of IEC 60598-1 “Lum inaries – Part 1: General requirements 
and tests”. 
(h) For directional LED lamp, luminous intensity di stribution shall be measured to 
demonstrate that the lamp having at least 80% of li ght output within a solid angle of πsr 
(corresponding to a cone with angle of 120 degree).   
 
Directional LED lamps with Integral Driver - Additi onal Performance Requirements for LED 
Lamp without stating any Direct Comparison with Tar get Lamp 
(i) The measured luminous efficacy shall be equal t o or greater than the corresponding 
minimum allowable value as indicated in Table 6 bel ow. 
 
Table 6: Minimum Allowable Luminous Efficacy for Di rectional LED Lamps with Integral Driver 
Lamp Diameter (Ld) Minimum Allowable Luminous Effic acy (lm/W) 
Ld ≤ 63.5 mm 40 
Ld > 63.5 mm 45 
 
(j)  The measured beam angle of the LED lamp shall be within ±25% of the rated beam 
angle of the LED lamp. 
(k)  The measured initial luminous flux shall be eq ual to or greater than 90% of the rated 
luminous flux. 
 
Directional LED lamps with Integral Driver - Additi onal Performance Requirements for LED 
Lamp stating any Direct Comparison with Target Lamp  
(l) The directional LED lamp shall have a rated lam p wattage not greater than 25% of any 
lamp it is claimed to replace. 
(m) The measured luminous efficacy shall be equal t o or greater than the corresponding 
minimum allowable value as indicated in Table 7 bel ow. 
Table 7: Minimum Allowable Luminous Efficacy for Di rectional LED Lamps with Integral Driver  
Lamp Diameter (Ld) Minimum Allowable Luminous Effic acy (lm/W) 
Ld ≤ 63.5 mm 40 
Ld > 63.5 mm 45 
  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 (n)  The measured beam angle of the LED lamp shall be within ±25% of the rated beam 
angle of the LED lamp; and the rated beam angle of the LED lamp shall be equal to the rated 
beam angle of the target lamp. 
(o)  For directional LED lamp excluding PAR, the me asured initial luminous flux shall be 
equal to or greater than 90% of the rated luminous flux; and the luminous flux of the LED 
lamp shall be at least equal to the rated wattage o f the target lamp to be replaced multiplied 
by 10. 
(p) For PAR (i.e. PAR16, PAR20, PAR30 and PAR38), t he measured initial minimum center 
beam intensity shall exceed the value (cd) for a gi ven wattage of target lamp and beam angle 
of target lamp as stated in the corresponding table s in Annex 9. 
 
Directional LED Lamps with Non-integral Driver - Sp ecific Performance Requirements 
5.3 The LED lamps are needed to meet the following performance requirements: 
(a) The measured General CRI (Ra) values (both init ial and at 6,000 hours) shall be equal to 
or greater than 80, and shall not have decreased by  more than 5 points from the rated General 
CRI (Ra) value. 
(b) The LED lamp must have one of the rated Correla ted Colour Temperatures (CCTs) 
including 2700K, 3000K, 3500K, 4000K, 4500K, 5000K,  5700K, 6500K and flexible CCT 
consistent with the 7-step chromaticity quadrangles  and Duv tolerances as indicated in Table 8 
below. The measured CCT and Duv (both initial and a t 6,000 hours) shall be within the 
tolerances of target CCT and target Duv of the sele cted rated CCT.  
 
Table 8: Rated CCT Categories 
Rated CCT Target CCT and tolerance 
(K) Target Duv and tolerance 
2700 K 2725 ± 145 0.000 ± 0.006 
3000 K 3045 ± 175 0.000 ± 0.006 
3500 K 3465 ± 245 0.000 ± 0.006 
4000 K 3985 ± 275 0.001 ± 0.006 
4500 K 4503 ± 243 0.001 ± 0.006 
5000 K 5028 ± 283 0.002 ± 0.006 
5700 K 5665 ± 355 0.002 ± 0.006 
6500 K 6530 ± 510 0.003 ± 0.006 
Flexible CCT 
(2700-6500 K) T 1)  ± ∆T 2)  Duv 3)  ± 0.006 
 
1) T is chosen to be at 100 K steps (2800, 2900,..., 64 00 K) excluding those eight nominal 
CCTs listed in Table 7. 
2) ∆T is given by ∆T = 0.0000108 ×T2+0.0262x T+8.  
3) Duv is given by Duv = 57700x(1/T) 2–44.6 ×(1/T)+0.0085.   
   
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 (c) The change of chromaticity (at initial and 6,00 0 hours) shall be within 0.007 on the CIE 
1976 (u’, v’) diagram. 
(d) For the LED lamp with non-integral LED driver, the measured power factor (both initial 
and at 6,000 hours) shall be equal to or greater th an 0.9. 
(e) The measured initial power consumption by the L ED lamp shall be neither less than 
90% nor greater than 110%  of the rated lamp wattage. 
(f) The LED lamp shall be subjected to supply volta ge switching test as follow: 
At test voltage the lamp (inclusive of the LED driv er) shall be switched on and off for 30 
seconds. The cycling shall be repeated for 10,000 t imes or a number equal to half of the rated 
lamp life (hours), whichever is greater; 
At the end of the above test, the LED lamp shall op erate and remain alight for 15 minutes. 
(g) The measured average lumen maintenance at 6,000  hours shall be equal to or greater 
than 90% . For recessed directional LED lamp (e.g. MR16 LED lamps), the lamp should be 
mounted in simple recessed luminaries for testing. The assembly will be mounted in a test box 
made in accordance with Annex D of IEC 60598-1 “Lum inaries – Part 1: General requirements 
and tests”. 
(h) For directional LED lamp, luminous intensity di stribution shall be measured to 
demonstrate that the lamp having at least 80% of li ght output within a solid angle of πsr 
(corresponding to a cone with angle of 120 degree).   
 
Directional LED lamps with Non-integral Driver - Ad ditional Performance Requirements for the 
LED Lamp without stating any Direct Comparison with  Target Lamp 
(i) The measured luminous efficacy shall be equal t o or greater than the corresponding 
minimum allowable value as indicated in Table 9 bel ow.  The luminous efficacy for directional 
LED lamps with non-integral driver excludes the dri ver loss. 
 
Table 9: Minimum Allowable Luminous Efficacy for Di rectional LED Lamps with Non-Integral 
Driver 
Lamp Diameter (Ld) Minimum Allowable Luminous Effic acy (lm/W) 
Ld ≤ 63.5 mm 40 
Ld > 63.5 mm 45 
 
(j)  The measured beam angle of the LED lamp shall be within ±25% of the rated beam 
angle of the LED lamp. 
(k) The measured initial luminous flux shall be equ al to or greater than 90% of the rated 
luminous flux. 
 
Directional LED lamps with Non-integral Driver - Ad ditional Performance Requirements for the 
LED Lamp stating any Direct Comparison with Target Lamp 
(l) The directional LED lamp shall have a rated lam p wattage not greater than 25% of any 
lamp it is claimed to replace.  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 (m) The measured luminous efficacy shall be equal t o or greater than the corresponding 
minimum allowable value as indicated in Table 10 be low. The luminous efficacy for directional 
LED lamps with non-integral driver excludes the dri ver loss. 
Table 10: Minimum Allowable Luminous Efficacy for D irectional LED Lamps 
Lamp Diameter (Ld) Minimum Allowable Luminous Effic acy (lm/W) 
Ld ≤ 63.5 mm 40 
Ld > 63.5 mm 45 
 
(n)  The measured beam angle of the LED lamp shall be within ±25% of the rated beam 
angle of the LED lamp; and the rated beam angle of the LED lamp shall be equal to the rated 
beam angle of the target lamp. 
(o)  For directional LED lamp excluding MR16, the m easured initial luminous flux shall be 
equal to or greater than 90% of the rated luminous flux; and the luminous flux of the LED 
lamp shall be at least equal to the rated wattage o f the target lamp to be replaced multiplied 
by 10. 
(p) For MR16 directional LED lamps, the measured in itial minimum center beam intensity 
shall exceed the value (cd) for a given wattage of target lamp and beam angle of target lamp 
as stated in the corresponding tables in Annex 9. 
 
Safety Requirements 
5.4 In addition to the performance requirements, al l LED lamps shall comply with the 
Electrical Products (Safety) Regulation, Chapter 40 6G of the Laws of Hong Kong, and the 
safety standards specified under the Regulation, an d all other legislations concerning the safety 
of LED lamps. 
 
Control of Interference Requirements 
5.5 In addition to the performance requirements, al l LED lamps shall comply with the 
requirements specified in the Telecommunications (C ontrol of Interference) Regulations 
(Chapter 106B) of the Law of Hong Kong, and interna tional standards such as CISPR 15 or its 
equivalence. 
 
Number of Samples to be Tested 
5.6 For submission of product information of a mode l, a test report on samples of the 
model shall be submitted.  The minimum numbers of s amples for the tests are indicated in 
Table 11 below. 
 
Table 11: Minimum Number of Samples for Tests 
Test Parameters Samples 
CCT, General CRI (Ra), change of chromaticity, lume n maintenance, 
luminous efficacy, luminous flux, power factor and lamp wattage 10 
Supply voltage switching test 10 
Center beam intensity, luminous intensity distribut ion and beam angle 1  
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5.7 The test results of the samples shall be determ ined in accordance with the 
requirements in Table 12.  
 
Table 12: Determination of Test Results 
Test Parameters Test Results 
Luminous efficacy 90% of the tested samples of a total batch shall 
meet the applicable requirements as stated in 
Clauses 5.1(h), 5.2(i), 5.2(m), 5.3(i) and 5.3(m). 
General CRI (Ra) 
(both initial and at 6,000 hours) The average of measured values of all test 
samples shall meet the applicable requirement 
as stated in Clauses 5.1(a), 5.2(a) and 5.3(a) 
with none lower than 77. 
CCT 
(both initial and at 6,000 hours) 90% of the tested samples of a total batch shall 
meet the applicable requirement as stated in 
Clauses 5.1(b), 5.2(b) and 5.3(b). 
Change of chromaticity  
(at initial and 6,000 hours) 90% of the tested samples of a total batch shall 
meet the applicable requirement as stated in 
Clauses 5.1(c), 5.2(c) and 5.3(c). 
Power factor 
(both initial and at 6,000 hours) The average of measured values of all test 
samples shall meet the applicable requirement 
as stated in Clauses 5.1(d), 5.2(d) and 5.3(d). 
Lamp wattage 90% of the tested samples of a total batch shall 
meet the applicable requirement as stated in 
Clauses 5.1(e), 5.2(e), 5.2(l), 5.3(e) and 5.3(l). 
Supply voltage switching test 90% of the tested samples of a total batch shall 
meet the applicable requirement as stated in 
Clauses 5.1(f), 5.2(f) and 5.3(f). 
Lumen maintenance The average of measured values of all test 
samples shall meet the applicable requirement 
as stated in Clauses 5.1(g), 5.2(g) and 5.3(g). 
Luminous flux 90% of the tested samples of a total batch shall 
meet the applicable requirements as stated in 
Clauses 5.1(i), 5.1(j), 5.2(k), 5.2(o), 5.3(k) and 
5.3(o). 
Luminous intensity distribution 
(for directional LED lamp only The measured values of the sample shall meet 
the applicable requirements as stated in Clauses 
5.2(h) and 5.3(h). 
Beam angle(for directional LED 
lamp only The measured values of the sample shall meet 
the applicable requirements as stated in Clauses 
5.2(j), 5.2(n), 5.3(j) and 5.3(n). 
Center beam intensity (for 
directional LED lamp only)  The measured values of the sample shall meet 
the applicable requirements as stated in Clauses 
5.2(p) and 5.3(p). 
  
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6. Test Standards 
 
General 
6.1 All test standards specified in this document a re related to the energy efficiency and 
general performance requirements.  It is not the in tention of this document to detail out the 
test standards and requirements for the Electrical Products (Safety) Regulation of the HKSAR. 
The participant should conduct appropriate tests, w here necessary, in addition to those 
specified in this document in order to obtain Certi ficates of Safety Compliance for his 
appliances. 
 
Test Standards – Energy Efficiency Performances 
6.2 The luminous efficacy value (lm/W) is the major  criterion that determines whether a 
lamp can meet the specific energy efficiency requir ement. Therefore, it is important that a 
common base is used to validate the information sub mitted by manufacturers from different 
countries for their appliances. 
 
6.3 The testing standards for measurement of electr ical and photometric performances are 
based on the following international standards. For  detailed requirements and procedural 
descriptions one should refer to the respective sta ndards. 
(a) IES LM-79, Approved Method: Electrical and Phot ometric Measurements of Solid State 
Lighting Products; 
(b) IEC/PAS 62612, Self-ballasted LED-lamps for gen eral lighting services – Performance 
Requirements; and 
(c) IEC 60598-1, Luminaires – Part 1: General requi rements and tests. 
 
6.4 To the extent that definitions in the IEC and I ES standards do not conflict with the 
definitions of this document, the definitions in th e aforesaid standards shall be included. 
 
Test Conditions  
6.5 The test conditions for LED lamps shall be as f ollows: 
(a) The general test conditions make reference to I EC/PAS 62612:2009 and IES LM-79, and 
are detailed as follow: 
All tests shall be made in a draught-free room at a n ambient temperature of (25 ± 1) °C and a 
relative humidity of 65% maximum. 
The test voltage shall be stable within ± 0.5%, during stabilization periods, ± 0.2% at the 
moment of measurements. For ageing and lumen mainte nance testing, the tolerance is 2%.  
The total harmonic content of the supply voltage sh all not exceed 3% .  The harmonic content 
is defined as the RMS summation of the individual h armonic components using fundamental 
as 100%. 
LED lamps shall be operated in free air in a vertic al base-up position for all tests including 
lumen maintenance test. 
The LED lamp under test shall be operated long enou gh to reach stabilization and temperature 
equilibrium.  It can judged that stability is reach ed when the variation (maximum – minimum)  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 of at least 3 readings of the light output and elec trical power over a period of 30 minutes, 
taken 15 minutes apart, is less than 0.5%.  The sta bilization time used for each LED lamp shall 
be reported. 
(b) The test voltage and frequency for the LED lamp s shall be 220 volts AC with tolerance 
meeting the requirements as stated in clause 6.5(a)  and 50 Hz ± 2 %, respectively; and and and and 
(c) For dimmable LED lamps, all performance require ments shall be tested with the lamp 
operated at full power; and and and and   
(d)  For LED lamps requiring specific non-integral LED driver(s), all performance 
requirements shall be tested with the lamp operated  with all the specific non-integral LED 
driver(s). Individual test reports for each type of  drivers in accordance with the requirements in 
this document shall be provided.  If the non-integr al LED driver(s) and the LED lamp are come 
from different manufacturers, a letter of consent i s required from the manufacturer of the LED 
driver(s) for using their driver to test with the a pplicant’s LED lamp; and and and and 
(e) For retrofit MR16 LED lamps that compatible wit h existing non-integral 12V low 
voltage transformer(s), all performance requirement s shall be tested with the lamp operated 
with all the compatible non-integral 12V transforme r(s).  Individual test reports for each type of 
driver in accordance with the requirements in this document shall be provided. If the non-
integral LED driver(s) and the LED lamp are come fr om different manufacturers, a letter of 
consent is required from the manufacturer of the LE D driver(s) for using their driver to test with 
the applicant’s LED lamp. 
 
Measurement of CCT, Center Beam Intensity, General CRI (Ra), Change of 
Chromaticity, Light Intensity Distribution, Luminou s Flux and Lamp 
Wattage of Test Lamp 
6.6 The results at the test conditions mentioned in  Section 6.5 shall be measured in 
accordance with the requirements of IES LM-79. 
 
Measurement of Lumen Maintenance of Test Lamp 
6.7 The lumen maintenance at the test conditions me ntioned in Section 6.5 shall be 
measured in accordance with the requirements of IES  LM-79. IEC 60598-1 shall also be applied 
for the situation as described in Section 5.2 (g) a nd Section 5.3 (g). 
 
Determination of Power Factor 
6.8 Power factor shall be determined by computing t he ratio of measured active input 
power to the product of measured supply voltage and  current in r.m.s.  
 
Determination of Lamp Luminous Efficacy 
6.9 Lamp luminous efficacy shall be determined by c omputing the ratio of the measured 
initial lamp luminous flux output and measured init ial lamp electrical power input at the test 
conditions. The resulting quotient shall be rounded  off to the nearest unit of a lumen per watt.  
 
 
7. Energy Label 
Label Location 
7.1 The labels should be self-adhesive or otherwise  approved by the Director and affixed to 
the appliance packaging at a prominent location.  T he participant should ensure that the  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 energy label appears on every registered appliance on display or sale and should be easily 
visible. 
 
Colour Scheme & Dimensions 
7.2 The energy labels should be printed on white-co loured self-adhesive sheet material and 
should have colour schemes and dimensions as shown in Annex 1.  It should be printed in 
English and in Chinese.  If the dimensions of the e nergy label as shown in Annex 1 cannot fit 
into the product packaging, then the second largest  energy label (in the descending order of 
90%, 80% and 70% (by length) of the largest energy label) is to be chosen. 
 
Label Quality 
7.3 The paper or the material that is approved by t he Director for the label should be 
durable and possess good wear and tear characterist ics. It should stick tightly on the appliance 
packaging.  
 
 
8. Testing Facilities, Laboratories and Accreditati on 
Bodies 
 
8.1 The Authority will accept the results and certi ficates issued by the test laboratory, which 
fulfills one of the following criteria as specified  in Clause 8.2 or 8.3. 
 
8.2 The laboratory is accredited by the Hong Kong A ccreditation Service (HKAS) for IES LM-
79, IEC 60969 or their equivalence under the Hong K ong Laboratory Accreditation Scheme 
(HOKLAS) or a scheme for which HOKLAS has concluded  a mutual recognition agreement (see 
Note). For measurements of light intensity distribu tion, beam angle and center beam intensity 
of directional LED lamps, the laboratory shall have  a Type-C goniophotometer as prescribed in 
IES LM-79 and accredited by HKAS for IES LM-79, IEC  61341, CIE 121 or their equivalence 
under the Hong Kong Laboratory Accreditation Scheme  (HOKLAS) or a scheme for which 
HOKLAS has concluded a mutual recognition agreement  (see Note). 
 
8.3 The Authority will also consider the following arrangements: 
(a) Self-certification by original manufacturers th at the operations of their in-house 
laboratories satisfy the requirements of ISO/IEC 17 025; and 
(b) The manufacturers are currently operating accor ding to a recognized international 
quality system (such as ISO 9001); and 
(c) The manufacturer’s in-house laboratories has be en successful in carrying out the 
relevant tests in IES LM-79, IEC 60969 or their equ ivalence and where these tests has been 
evaluated and certified by third party internationa lly recognized independent certification 
organizations. For measurements of light intensity distribution, beam angle and center beam 
intensity of directional LED lamps, the in-house la boratory shall have a Type-C 
goniophotometer as prescribed in IES LM-79 and the manufacturer’s in-house laboratories has 
been successful in carrying out the relevant tests in IES LM-79, IEC 61341, CIE 121 or their 
equivalence and where these tests has been evaluate d and certified by third party 
internationally recognized certification organizati ons.  
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8.4 The internationally  recognized independent certification body mentione d in clause 
8.3(c) shall meet the following minimum requirement s- 
(a) Being recognized internationally to be competen t for certifying product energy 
efficiency performance tests; 
(b) Having experience in assessing and certifying t he relevant energy efficiency 
performance tests; and 
(c) Having well established assessment procedures, including staff training and assessment 
criteria, relating to assessment criteria, relating  to assessment and certification of energy 
efficiency performance tests. 
 
Laboratory Accreditation 
8.5 The Government takes cognizance of the need to ensure acceptable and compatible 
quality standards of testing laboratories, and cons iders that they need to be accredited by 
some independent bodies. 
 
8.6 The criteria of accreditation should be based o n ISO/IEC 17025 and accreditation bodies 
should operate in accordance with ISO/IEC 17011. 
 
8.7 The Authority will recognize accreditation gran ted by the HKAS and by overseas 
accreditation bodies which have concluded mutual re cognition arrangements with HKAS for 
accreditation of testing laboratories. The Authorit y will consider accreditation by other bodies 
on a case-by-case basis. 
 
 
_______________ 
Note  HKAS has concluded mutual recognition arrangements with overseas accreditation bodies for 
testing laboratory accreditation. The list of mutua l recognition arrangement partners may change from 
time to time and the up-to-date list is available f rom the HKAS website of www.info.gov.hk/itc/hkas . 
Partners to these arrangements recognise the accred itations granted by one another as equivalent. 
 
 
 
9. Registration and Participation 
 
Registration Procedures 
9.1 All manufacturers, importers and the other part ies involved in the appliance distribution 
network are welcomed and encouraged to participate in the scheme. For some known 
manufacturers and importers, invitation letters wil l be issued to them. However, any party may 
submit their applications for registration no matte r whether they are invited or not.  
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9.2 The proforma letter of invitation is shown in A nnex 2.  
 
9.3 Applicant should submit his formal application to  
Chief Engineer /Energy Efficiency A 
Energy Efficiency Office 
Electrical & Mechanical Services Department 
 3 Kai Shing Street, Kowloon 
Hong Kong 
 
by means of an application letter through mail, fac simile or electronic mail.  In order to ensure 
effective implementation of the scheme, the applica nt must commit himself to fully comply 
with the duties, responsibilities and obligations s et out in this scheme. The proforma letter of 
application as shown in Annex 3 details the aforesa id obligations and should be used for 
application. To facilitate the application process,  the application form can be downloaded from 
EMSD website. 
 
Information/Documents to be Submitted for Registrat ion 
9.4 Each brand and model of an appliance participat ing in the scheme should be provided 
with a test report issued by a recognized laborator y. The test report should contain energy 
efficiency test and performance test results. Detai ls of the technical information to be 
submitted together with the application are listed as follows: 
(a) Information of the company: 
Name, Address, Telephone number, Fax, E-mail addres s, Contact person, Importer, Distributor, 
etc. 
 
(b) Products to apply for participating in the sche me: 
i) Name of LED lamp, types, directional or non-dire ctional, dimmable or non-dimmable, 
integral or non-integral LED driver, brand, model r eferences, country of origin. 
ii)  Name of non-integral LED driver, types, brand,  model references, countries of origin, if 
applicable. 
iii) Target lamp type, wattage and beam angle for t hose products stating any direct 
comparison with existing lamps, if applicable. 
(c) Parties that will be responsible for making and  fixing the Energy Labels 
 
(d) Commencement date to affix energy labels on app liance packaging 
Year _______, Month________ 
 
(e) Certificates of Safety Compliance prescribed by  the Electrical Products (Safety) 
Regulation of the HKSAR (Chapter 406G) and safety r equirements at Clause 6. 
  
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 (f) Technical data of LED lamps: 
Rated General CRI (Ra); 
Rated Correlated Colour Temperature (CCT); 
Rated lamp wattage; 
Rated lamp voltage; 
Rated frequency; 
Rated lamp life; 
Rated luminous flux, if applicable; and 
Rated beam angle 
 
(g) Detailed reports with test data, graphics and r esults showing that the following LED 
lamp performances: 
General CRI (Ra) (both initial and at 6,000 hours);  
Correlated Colour Temperature (CCT) and Duv (both i nitial and at 6,000 hours); 
Change of chromaticity (at initial and 6,000 hours) ; 
Power Factor (both initial and at 6,000 hours); 
Lamp wattage; 
Supply voltage switching test; 
Averaged lumen maintenance (at 6,000 hours); 
Luminous efficacy; 
Luminous flux, if applicable; (Remark: Calculation of minimum luminous flux for LED lamp to 
claim equivalence to incandescent lamp shall be pro vided) 
Center beam intensity, if applicable; (Remark: Calc ulation of minimum center beam intensity 
for PAR and MR16 LED lamps to claim equivalence to existing reflector lamps shall be provided) 
Luminous intensity distribution and beam angle (onl y applicable to directional LED lamps); and 
Brand and model of Type-C goniophotometer which is used in the test (only applicable to 
directional LED lamps). 
 
(h) Since it may take long time to complete the 6,0 00 hours test for LED lamp, the 
Authority may also consider the following in lieu o f Clause (g) above: 
i) Detailed reports with test data, graphics and re sults showing that the following LED 
lamp performances; and 
General CRI (Ra) (both initial and at 3,000 hours);  
Correlated Colour Temperature (CCT) and Duv (both i nitial and at 3,000 hours); 
Change of chromaticity (at initial and 3,000 hours) ; 
Power Factor (both initial and at 3,000 hours); 
Lamp wattage; 
Supply voltage switching test; 
Averaged lumen maintenance (at 3,000 hours);  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 Luminous efficacy; 
Luminous flux, if applicable; (Remark: Calculation of minimum luminous flux for LED lamp to 
claim equivalence to incandescent lamp shall be pro vided) 
Center beam intensity, if applicable; (Remark: Calc ulation of minimum center beam intensity 
for PAR and MR16 LED lamps to claim equivalence to existing reflector lamps shall be provided) 
Luminous intensity distribution and beam angle (onl y applicable to directional LED lamps); and 
Brand and model of Type-C goniophotometer which is used in the test (only applicable to 
directional LED lamps).  
ii)  The results in the detailed reports as mention ed in clause i) above shall not be lower 
than the applicable requirements as stipulated in S ection 5, excepting that the measured 
averaged lumen maintenance at 3,000 hours shall be equal or greater than 95%; and  
iii) Additional detailed report of the LED lamp (i. e. operate at test voltage other than 220 
volts AC) with test data, graphics and results show ing that the applicable requirements 
stipulated in Section 5 can be met.  The detailed r eport shall include test data at 6,000 hours 
for those performance parameters requiring test res ults at 6,000 hours.  The detailed report 
shall be issued by a testing laboratory meeting the  requirements as stipulated in Section 8.   
 
(i)  Self-declaration issued by original manufactur er that the product is or is not intended 
to replace existing lamp. Sample of declaration of conformity is shown in Annex 10. 
 
(j)  Letter of consent from the manufacturer of the  non-integral LED driver for using their 
driver to test with the applicant’s LED lamp. (only  applicable if the non-integral LED driver and 
the LED lamp are manufactured by different manufact urers)  
 
Notes: Company's name and chop should be stamped on  all the documents provided. The 
above information can also be found in Annex 4, inf ormation to be submitted to Energy 
Efficiency Office. 
 
Acceptance of Registration 
9.5 On receipt of the application, the Authority wi ll process the application and verify 
whether the appliance meets the energy efficiency a nd performance requirements based on 
the submitted data. 
 
9.6 If the application is accepted, the participant s will be notified of the result in writing 
within 17 working days.  The participants will then  be allowed to affix the energy label onto 
the 'registered' appliances packaging. Both manufac turers and importers of the registered 
appliances should ensure that the energy labels are  correctly printed and affixed on the 
appliances packaging in accordance with Section 7.  The performa letter of acceptance is 
shown in Annex 5. 
 
9.7 If the application is rejected, the notificatio n letter as shown in Annex 6 will also be 
given within 17 working days upon receipt of all ne cessary information requested. 
 
9.8 The flow chart for registration is shown in Ann ex 7.  
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Participant’s Duties, Responsibilities and Obligati ons 
9.9 The participant is obliged to: 
(a) submit application and information including te st results in accordance with format and 
procedures set out in Section 9.3 & 9.4; 
(b) conduct tests via recognized laboratories and t o comply with the specified test 
methodology; 
(c) produce and affix energy labels at his own cost s; 
(d) fully inform other sales agents in his distribu tion network once the particular brand and 
model of an appliance is registered; 
(e) allow random/ad-hoc inspection to be conducted by persons authorized by the 
Authority on registered appliance at his premises; 
(f) conduct re-test(s) at his own costs at some rec ognized laboratories, if non-compliance 
is found on the appliance.  The result of re-test(s ) shall reach the Authority within the 
prescribed period of time specified by the Authorit y;  
(g) inform the Authority of any change in the techn ical information and data that were 
previously submitted to the Authority together with  the application letter; 
(h) accept the fact that if appliance fails to perf orm in accordance with the requirements as 
given in Sections 4, 5, 6 and 7 and this cannot be readily rectified, the Authority may order it 
be de-registered from the scheme;   
(i) remove all energy labels from appliances which had been de-registered from the 
scheme immediately; and 
(j) provide correct information of target lamp type , wattage and beam angle (i.e. 
equivalent to those stated in manufacturer’s self-d eclaration letter required in section 9.4 (h)) 
on product packaging, supporting documents and mark eting material for LED lamp intended 
to replace existing lamp. 
 
9.10 The details of the registered appliances will be kept in a register maintained by the 
Authority. The registration records will be regular ly uploaded and maintained in the EMSD 
Internet for public and interested parties for acce ss and information. 
 
Termination  
9.11 Under circumstances of poor performance such a s:  
(a) (repeated) failure to fulfill obligations set o ut under Section 9.9; or 
(b) in any other case where the Director is of the opinion that registration of an appliance 
is contrary to the public interest. 
 
The Authority may de-register an appliance from the  scheme with immediate effect by giving 
the participant notice in writing.  Once an applian ce is de-registered, no one is allowed to fix 
an energy label on it. 
 
9.12 Participant who decides to discontinue partici pating in the scheme or to withdraw any 
registered model from the registered appliances lis t shall give at least three months’ advance 
notice to the Authority.  
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10. Legal Provisions 
 
10.1 This is a voluntary scheme. However, a partici pant who abuses the scheme by giving 
false information may contravene provisions of the Trade Description Ordinance (Chapter 362). 
 
10.2 No one could take advantage of the scheme by u sing the label on his appliances 
without authorization of the Authority as that may constitute an infringement of copyright 
under the Copyright Ordinance (Chapter 528). 
 
 
 
11. Compliance Monitoring and Inspection  
 
Purpose 
11.1 To uphold credibility of the scheme and to mai ntain continuous confidence of the 
consumers, compliance check on energy labels on tho se appliances participating in the scheme 
are needed. Also, to avoid the unsatisfactory situa tion that the non-participating parties taking 
advantage of the scheme by using unauthorized label s, suitable form of inspection on those 
unregistered appliances will also be required. 
 
Scope 
11.2 The scope of inspection includes sample checki ng  and testing of the following items: 
(a) whether energy label is in fact placed on the r egistered appliance packaging; 
(b) whether energy label on the registered applianc e packaging is in a prominent position; 
(c) whether energy label being displayed is of corr ect format in accordance with Section 7; 
(d) whether unregistered appliances display unautho rized energy labels; 
(e) whether the registered appliance complies with the energy efficiency and performance 
requirements; and 
(f) whether the data submitted by the participants are correct by random re-testing. 
 
11.3 The participants will be requested to take imm ediate remedial action and report the 
follow-up action taken if non-compliance is found o n their appliances.  
 
11.4 If a registered appliance carrying energy labe l but found not meeting the requirements 
(as specified in Section 5) in accordance with the test standards stipulated in Section 6, the 
participant will also be requested to repeat the pe rformance tests stipulated in Section 5 by an 
agreed testing laboratory.  The initial results of relevant performance tests shall be submitted  
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps   
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 to the Authority for initial review within one week . The 3,000hours interim results of the 
relevant performance tests shall be submitted to th e Authority for interim review on or before 
130 days  after commencement of repeat the performance tests .  The final results (in a form of 
test report) of the relevant performance tests shal l be submitted to the Authority for final 
confirmation of the compliance after completion of the tests.  
 
11.5 If non-compliance is confirmed in the repeat p erformance tests initial / interim / final 
test results, the Authority may de-register an appl iance from the scheme with immediate effect 
by giving the participant notice in writing.  Failu re to remove energy labels from the de-
registered appliances after the Director has withhe ld his authorization for using such labels 
may contravene the relevant ordinances. 
 
Inspecting Officers 
11.6 The Authority will authorize inspecting office rs to carry out appliances compliance 
monitoring and inspection. The officers will carry proper identification cards that will be 
produced on request during their inspection operati ons. However, the officer will not inform 
the participants in advance of their intended inspe ction operation. 
 
11.7 It is the participants' duty to allow the insp ecting officers to gain access to their 
premises to carry out inspection. 
 
Mode of Inspection 
11.8 Inspections will be carried out on registered appliances under the scheme on random 
basis. Based on the record of the registration, ran dom inspection programmes will be 
developed. 
 
11.9 In addition to the random inspections, the ins pecting officers will carry out ad-hoc 
inspections in response to complaints. The items to  be inspected in such a case will depend 
upon the nature of complaint and may include all ty pes of inspection as stated in Section 11.2. 
 
11.10 Inspections will normally be carried out at t he retail outlets and appliances showrooms. 
Where necessary, inspection will also be done at wa rehouses. 
  
11.11 The inspection results will be properly recor ded for future analysis as well as on 
evaluation of the effectiveness of the scheme. 
 
 
12. Complaints and Appeal 
 
12.1 The Authority will be responsible for dealing with complaints from participant and 
other parties against matters related to the scheme . 
  
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 Complaints Handling Procedure 
12.2 The Director shall ensure that complaints are properly recorded and handled without 
undue delay. 
 
12.3 The Authority shall carry out preliminary inve stigation on complaints and reply to the 
complainants within a reasonable time. For complain ts that require site inspection and 
laboratory test, the complainant shall be notified through an interim reply. 
 
12.4 The Authority shall inform the complainant of the results or decisions made on the 
complaint. 
 
Appeal Procedure 
12.5 A participant who is aggrieved by a decision o r action taken by the Authority may 
appeal to the Director in writing stating the reaso n for the appeal. 
 
12.6 The Director may decide to suspend the decisio n or action given by the Authority from 
the day on which the appeal is made until such appe al is disposed of, withdrawn or 
abandoned unless such suspension would, in the opin ion of the Director, be contrary to public 
interest. 
 
12.7 The Director may by notice to the appellant re quire that appellant to attend meeting 
with him or his representative and provide document s and give evidence relevant to the appeal. 
 
12.8 The Director shall notify the appellant of his  decision and reasons for it. The decision 
will be final and binding. 
 
 
 
 
13. Maintenance of Scheme 
 
13.1 To ensure that the scheme can continue to oper ate effectively and efficiently after its 
introduction, a proper system of maintenance is nee ded.  
 
13.2 The maintenance system consists essentially of : 
(a) Continuous updating of the lists of participant s in the scheme as follows: 
i) Registered appliances with details such as regis tration number, date of registration or 
de-registration if it occurs, energy efficiency dat a, performance data, brand, model and other 
related information ; and 
ii) Registered importers, manufacturers, local agen ts etc. in the distribution network with 
details such as address, date of registration or de -registration if it occurs, etc.  
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(b) Periodic review of the test methodology, and pr ocedures for application registration 
and compliance monitoring, etc. to bring them in li ne with the latest needs of the 
manufacturers, importers and retailers, etc   
 
(c) Continuous evaluation of the effectiveness of t he scheme and assessment of what 
changes are necessary. 
 
 
14. Future Development 
 
14.1 It is hoped that following implementation of t he scheme, the market will phase out 
lamp models of low efficiency and the public will h ave improved awareness on using energy 
efficient labelling products.      Annex 1     
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 1  Energy Label Format Energy Label Format Energy Label Format Energy Label Format     
 
 
 
 
 
 
 
 
      (Not to Scale) (Not to Scale) (Not to Scale) (Not to Scale)    
 
 
 
Soft copy of the label can be obtained from Energy Efficiency Office, Electrical and Mechanical 
Services Department.  
 40mm 28mm    Annex 2     
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 2  Proforma Letter of Invitation Proforma Letter of Invitation Proforma Letter of Invitation Proforma Letter of Invitation     
 
Our ref.  EEO/LB/35 
Your ref. 
 
Tel. 
Fax.      
  
Date 
    
Name and Address of  
Manufacturers/Importers/Agents  
    
Dear Sir/Madam, 
 
Invitation of Application for Registration to Parti cipate in 
Voluntary Energy Efficiency Labelling Scheme for LE D Lamp 
    
Having gone through the necessary consultations and  duly considered the views from various 
concerned parties, the government has decided to in troduce a voluntary energy efficiency 
labelling scheme for LED lamps to Hong Kong with ef fect from (___________________). The 
details of the scheme /onesansinv have been finalized and the revised Scheme documen t can be 
downloaded from EMSD web-site: http://www.emsd.gov. hk. 
 
Being one of the major LED lamps manufacturers / im porters / agents /twosansinv in Hong Kong, you are 
invited to participate in the scheme so as to take part in promoting public awareness in energy 
conservation and environmental improvement to Hong Kong.  If you are interested to 
participate in the scheme, please apply in accordan ce with the proforma letter of application 
(scheme document - Annex 3) and submit details incl uding technical information in accordance 
with the scheme to the ‘Chief Engineer / Energy Eff iciency A’ at the following address. 
            
Energy Efficiency Office 
  Electrical and Mechanical Services Department 
  3 Kai Shing Street, Kowloon 
Hong Kong 
 
Please be reminded to submit accurate test data to support your application. Under this 
Scheme, routine compliance monitoring and checking will be performed and if a registered 
LED lamp is found to be non-compliant, we may consi der deregistering the model from the 
Scheme. 
 
Should you need further clarification or informatio n, you are most welcome to contact the 
undersigned or Mr. ____________ , at the telephone number _________. 
 
Yours faithfully, 
 
 
for Director of Electrical & Mechanical Services 
 
(Note : /onesansinv 'scheme' means 'The Voluntary Energy Efficiency La belling Scheme for LED 
Lamps ’ 
/twosansinv  delete as appropriate)        Annex 3     
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 3   Proforma Letter of Application Proforma Letter of Application Proforma Letter of Application Proforma Letter of Application     
 
Your ref. EEO/LB/35  
Our ref.  
         
Tel. 
Fax 
 
Date 
    
Chief Engineer/Energy Efficiency A 
Electrical & Mechanical Services Department 
3 Kai Shing Street, Kowloon 
Hong Kong 
 
Dear Sir/Madam, 
    
Application for Registration to Participate in 
Voluntary Energy Efficiency Labelling Scheme for LE D Lamp 
 
Our company is the (manufacturer/importer/agent*)  of___________________ in Hong Kong. 
We support the introduction the labelling scheme to  Hong Kong and would like to be one of 
the participants in the scheme to promote energy ef ficiency. 
 
I understand fully the obligations and duties state d in the scheme and will comply with all 
relevant requirements, in particular those specifie d below: 
i) conduct tests via recognized laboratories and to  comply with the specified test 
standards; 
ii) produce and affix specified labels at my own co sts;  
iii) allow random/ad-hoc inspection to be conducted  by persons authorized by the issuing 
Authority on registered appliance at my premises; 
iv) conduct re-test(s) at my own costs at some reco gnized laboratories, if the results of 
inspection suggest inaccurate energy label informat ion being displayed. The result of re-
test(s) shall reach the Authority within the prescr ibed period of time specified by the 
Authority; 
v) inform the Authority of any change in the techni cal information and data that were 
previously submitted to the Authority together with  the application letter; and 
vi) accept the fact that if appliance fails to perf orm in accordance with the required energy 
efficiency standards and performance as given in Se ction 5 and this cannot be readily 
rectified, the Authority may order it be de-registe red from the scheme. 
 
The details of information of those appliances whic h we intend to register with the Authority 
are shown in the attached document, (Annex 4) and a re submitted herewith for your vetting. 
 
Yours faithfully, 
 
(Manufacturer/Importer/Agent 's Name and Company Ch op) 
______________ 
* delete as appropriate   Annex 4 
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 4 
 Information to be Information to be Information to be Information to be S S SSubmitted to Energy Efficiency Office ubmitted to Energy Efficiency Office ubmitted to Energy Efficiency Office ubmitted to Energy Efficiency Office     
 
1. Information of the company: 
  
Name, Address, Telephone number, Fax, E-mail, Conta ct person, Importer, Distributor, 
etc. 
 
 
2. Product to apply for participating in the scheme : 
 
i)  Name of LED lamp, types, directional or non-directi onal, dimmable or non-
dimmable, integral or non-integral LED driver, bran d, model references, country 
of origin.  
 
ii)  Name of non-integral LED driver, types, brand, mode l references, countries of 
origin, if applicable. 
 
 
iii)  Target lamp type, wattage and beam angle for those products stating any direct 
comparison with existing lamps, if applicable. 
 
3. Parties will be responsible for making and fixin g the Energy Label 
 
      
4. Commencement date to affix Energy Labels on appl iance packaging 
 Year ______, Month ______ 
   
5. Technical data of LED lamps: 
(a)  Rated General CRI (Ra); 
(b)  Rated Correlated Colour Temperature (CCT); 
(c)  Rated lamp wattage; 
(d)  Rated lamp voltage; 
(e)  Rated frequency; 
(f)  Rated lamp life; 
(g)  Rated luminous flux, if applicable; and  
(h)  Rated beam angle. 
 
6.  Detailed reports with test data and results showing  that the following LED lamp 
performances: 
(a)  General CRI (Ra) (both initial and at 6,000 hours);  
(b)  Correlated Colour Temperature (CCT) (both initial a nd at 6,000 hours); 
(c)  Change of chromaticity (at initial and 6,000 hours) ; 
(d)  Power factor (both initial and at 6,000 hours); 
(e)  Lamp wattage; 
(f)  Supply voltage switching test;   Annex 4 
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 4 
 (g)  Averaged lumen maintenance (at 6,000 hours); 
(h)  Luminous efficacy; 
(i)  Luminous flux, if applicable; 
(Remark: Calculation of minimum luminous flux for L ED lamp to claim 
equivalence to incandescent lamp shall be provided)  
(j)  Center beam intensity, if applicable; 
(Remark: Calculation of minimum center beam intensi ty for PAR and MR16 LED 
lamps to claim equivalence to existing reflector la mps shall be provided) 
(k)  Luminous intensity distribution and beam angle (onl y applicable to directional 
LED lamps); and  
(l)  Brand and model of Type-C goniophotometer which is used in the test (only 
applicable to directional LED lamps). 
 
7. Since it may take long time to complete the 6,000 h ours test for LED lamp, the 
Authority may also consider the following in lieu o f clause 6 above:  
i)  Detailed reports with test data, graphics and resul ts showing that the following 
LED lamp performances; and 
(a)  General CRI (Ra) (both initial and at 3,000 hours);  
(b)  Correlated Colour Temperature (CCT) and Duv (both i nitial and at 3,000 
hours); 
(c)  Change of chromaticity (at initial and 3,000 hours) ; 
(d)  Power Factor (both initial and at 3,000 hours); 
(e)  Lamp wattage; 
(f)  Supply voltage switching test; 
(g)  Averaged lumen maintenance (at 3,000 hours); 
(h)  Luminous efficacy; 
(i)  Luminous flux, if applicable; 
(j)  (Remark: Calculation of minimum luminous flux for L ED lamp to claim 
equivalence to incandescent lamp shall be provided)  
(k)  Center beam intensity, if applicable; 
(l)  (Remark: Calculation of minimum center beam intensi ty for PAR and 
MR16 LED lamps to claim equivalence to existing ref lector lamps shall 
be provided) 
(m)  Luminous intensity distribution and beam angle (onl y applicable to 
directional LED lamps); and 
(n)  Brand and model of Type-C goniophotometer which is used in the test 
(only applicable to directional LED lamps). 
ii)  The results in the detailed reports as mentioned in  clause i) above shall not be 
lower than the applicable requirements as stipulate d in Section 5, excepting 
that the measured averaged lumen maintenance at 3,0 00 hours shall be equal 
or greater than 95%; and 
iii)  Additional detailed report of the LED lamp (i.e. op erate at test voltage other 
than 220 volts AC) with test data, graphics and res ults showing that the 
applicable requirements stipulated in Section 5 can  be met.  The detailed report 
shall include test data at 6,000 hours for those pe rformance parameters   Annex 4 
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 4 
 requiring test results at 6,000 hours.  The detaile d report shall be issued by a 
testing laboratory meeting the requirements as stip ulated in Section 8. 
  
8. Documentary proof that the applied appliance(s) comply with the Electrical Products 
(Safety) Regulation of the Hong Kong Special Admini strative Region (Chapter 406G) 
and safety requirements at Clause 6. 
 
9. Self-declaration issued by original manufacturer  that the product is or is not intended to 
replace existing lamp. Sample of declaration of con formity is shown in Annex 10. 
 
10. Letter of consent from the manufacturer of the non-integral LED driver for using their 
driver to test with the applicant’s LED lamp. (only  applicable if the non-integral LED 
driver and the LED lamp are manufactured by differe nt manufacturers) 
 
 
 Note:   Company's name and chop should be stamped on the all documents provided. 
All test reports submitted to the office should be certified true copy by appropriate 
organization.   Annex 5 
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 5 Proforma Letter of Acceptance Proforma Letter of Acceptance Proforma Letter of Acceptance Proforma Letter of Acceptance     
 
Your ref.    
Our ref. EEO/LB/35 
        
Tel: 
Fax: 
      
Date  
 
Manufacturers/Importers/Agents  
    
Dear Sir/Madam, 
 
Acceptance of Application for Registration to Parti cipate in 
Voluntary Energy Efficiency Labelling Scheme Voluntary Energy Efficiency Labelling Scheme Voluntary Energy Efficiency Labelling Scheme Voluntary Energy Efficiency Labelling Scheme    for for for for LED  LED  LED  LED Lamp  Lamp  Lamp  Lamp    
 
 
With reference to your letter of ref.______________ __ dated ______________, I am pleased to 
inform you that your application to participate in the captioned scheme has been accepted. 
 
I enclose herewith the registration certificates of  LED lamps registered. The registered LED 
Lamps are as follows: 
 
  Brand/Model  Registration No.  Effective date   
 
 (___________) (_____________)  (___________) 
 
 
You are allowed to affix a specified energy label o nto each and every appliance packaging 
registered under the scheme. The contents of the en ergy label should be based on the 
information that you have provided in your applicat ion ref.__________ and dated __________.   
 
Should you have any queries regarding the scheme, p lease contact this office.   
            
 
Yours faithfully, 
   
 
 
   
for Director of Electrical & Mechanical Services   Annex 6 
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 6 PP PProforma roforma roforma roforma L L LLetter of Rejection etter of Rejection etter of Rejection etter of Rejection     
   
Our ref. EEO/LB/35 
Your ref. 
        
Tel. 
Fax.       
 
Date 
    
Manufacturers/Importers/Agents  
 
 
Dear Sir/Madam, 
    
Rejection of Application for Registration to Partic ipate in 
Voluntary Energy Efficiency Labelling Scheme for LE D Lamp 
    
With reference to your letter of application ref. _ _________________ dated ______________, I 
regret to inform you that your application for regi stration to participate in the scheme has not 
been accepted for the following reasons:- 
 
1. ________________________________________________ __etc. 
 
 
You are most welcome to submit new application agai n in future, when you have the 
necessary documents / information to support your a pplication.    
 
                 
Yours faithfully, 
 
 
 
          
 
for Director of Electrical & Mechanical Services   Annex 7 
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 7 
 Flow Chart for Registration Flow Chart for Registration Flow Chart for Registration Flow Chart for Registration     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Commencement  
of scheme  
Through other 
channel 
Manufacturers 
Importers, 
Agents  
Submit application &  
information 
(see Annex 3 & 4) 
Process 
application  
Accepted 
(see annex 5) 
Register 
participant 
Record Through 
invitation letter 
(see Annex 2) 
Rejected 
(see Annex 6) 
No 
Yes   Annex 8 
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 8 
 Minimum Minimum Minimum Minimum Luminous Flux Luminous Flux Luminous Flux Luminous Flux for LED Lamp to Claim  for LED Lamp to Claim  for LED Lamp to Claim  for LED Lamp to Claim 
Equivalence to Incandescent La Equivalence to Incandescent La Equivalence to Incandescent La Equivalence to Incandescent Lamp mp mp mp     
 
Claimed equivalent wattage of 
incandescent lamp (W) Minimum luminous flux of LED 
lamps (lm) 
15 117 
25 214 
40 404 
60 693 
75 907 
100 1,308 
150 2,108 
200 2,968 
 
Remarks:  The intermediate values of both the lumin ous flux and claimed equivalent wattage 
of incandescent lamp at 220 volts (rounded up to 1W ) shall be calculated by linear 
interpolation between two adjacent values.   Annex 9 
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 9 
 Minimum Center Beam Intensity for PAR and MR16 LED Minimum Center Beam Intensity for PAR and MR16 LED Minimum Center Beam Intensity for PAR and MR16 LED Minimum Center Beam Intensity for PAR and MR16 LED 
Lamps to Lamps to Lamps to Lamps to C C CClaim Equivalence to Existing Reflector Lamps laim Equivalence to Existing Reflector Lamps laim Equivalence to Existing Reflector Lamps laim Equivalence to Existing Reflector Lamps     
 
Table 9-1 Minimum Center Beam Intensity Requirement  (cd) for PAR16 
  Rated Wattage of Target Lamp (W) 
  5 10  15 20 25 30 35 40  45 50  55  60 
5 933  1115  1329  1579  1870  2208  2599  3051  3571  4166  4847  5622  
10  605  723  861  1023  1211  1430  1684  1977  2313  2699  3140  3642  
15  409  489  583  692  820  968  1140  1338  1566  1827  2126  2465  
20  290  346  412  490  580  685  806  947  1108  1292  1504  1744  
25  214  256  305  362  429  506  596  700  819  955  1111  1289  
30  165  197  235  280  331  391  460  540  632  738  858  995  
35  133  159  190  226  267  316  371  436  510  595  693  803  
40  112  134  160  190  225  266  313  368  430  502  584  677  
45  99  118  141  168  199  234  276  324  379  442  515  597  
50  91  109  130  154  183  216  254  298  349  407  474  550  
55  88  105  125  148  176  208  244  287  336  392  456  529  
60  88  105  126  149  177  209  246  288  338  394  458  531  Beam Angle of Target Lamp (degree) 
65  93  111  132  157  186  219  258  303  355  414  481  558  
 
Table 9-2 Minimum Center Beam Intensity Requirement  (cd) for PAR 20 
  Rated Wattage of Target Lamp (W) 
  5 10  15 20 25 30 35 40  45 50  55  60 
5 1340  1585  1869  2197  2575  3009  3506  4073  4717  5447  6270  7197  
10  856  1012  1193  1403  1644  1922  2239  2601  3012  3478  4004  4596  
15  571  675  796  936  1097  1282  1494  1735  2010  2321  2672  3067  
20  398  471  555  653  765  894  1042  1210  1401  1618  1863  2139  
25  290  343  405  476  557  651  759  882  1021  1179  1357  1558  
30  221  261  308  362  424  496  578  671  777  898  1033  1186  
35  176  208  245  288  338  394  460  534  618  714  822  944  
40  146  173  204  239  281  328  382  444  514  593  683  784  
45  127  150  177  208  244  285  332  385  446  515  593  681  
50  115  136  160  189  221  258  301  350  405  468  539  618  
55  109  129  152  179  210  245  286  332  384  444  511  586  
60  108  128  151  177  208  243  283  329  381  440  506  581  Beam Angle of Target Lamp (degree) 
65  112  132  156  184  215  251  293  340  394  455  524  601  
   Annex 9 
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 9 
 Table 9-3  Minimum Center Beam Intensity Requiremen t (cd) for PAR 30   Rated Wattage of Target Lamp (W) 
  15  20  25  30  35  40  45  50  55 60 65 75 90 100  125  
5 3708  4247  4850  5523  6269  7095  8006  9007  10103  11298  12597  15520  20754  24817  36825  
10  2285  2617  2988  3402  3862  4371  4932  5549  6224  6960  7760  9561  12786  15289  22686  
15  1471  1684  1924  2190  2486  2814  3175  3572  4006  4480  4996  6155  8230  9842  14603  
20  989  1133  1294  1476  1672  1893  2136  2403  2695  3014  3360  4140  5536  6620  9823  
25 695  796  909  1035  1175  1330  1501  1689  1894  2118  2362  2910  3891  4653  6904  
30  511  585  668  760  863  977  1102  1240  1391  1556  1734  2137  2858  3417  5070  
35  392  449  512  583  662  750  846  952  1067  1194  1331  1640  2193  2622  3891  
40  314  360  411  468  531  601  678  763  856  957  1067  1315  1758  2103  3120  
45  263  301  344  392  445  504  568  639  717  802  894  1102  1473  1762  2614  
50  230  264  301  343  390  441  498  560  628  702  783  964  1290  1542  2288  
55  211  241  276  314  356  403  455  512  574  642  716  882  1180  1411  2093  
60  202  231  264  300  341  386  435  489  549  614  685  843  1128  1349  2001  Beam Angle of Target Lamp (degree) 
65  201  231  263  300  340  385  435  489  548  613  684  842  1126  1347  1999  
 
Table 9-4  Minimum Center Beam Intensity Requiremen t (cd) for PAR 38   Rated Wattage of Target Lamp (W)   40  45 50 55 60 65 75 90 100  125  150  180  
5 9317  10296  11345  12462  13649  14905  17614  22127  25378  33931  42098  49408  
10  5577  6163  6791  7460  8170  8922  10544  13245  15191  20311  25199  29575  
15  3488  3855  4247  4666  5110  5580  6595  8284  9502  12704  15761  18498  
20  2280  2519  2776  3049  3340  3647  4310  5414  6210  8303  10301  12090  
25  1557  1721  1896  2083  2281  2491  2943  3697  4241  5670  7035  8256  
30  1111  1228  1353  1486  1628  1777  2100  2638  3026  4046  5020  5891  
35  828  915  1009  1108  1214  1325  1566  1967  2256  3017  3743  4393  
40  645  713  786  863  946  1032  1220  1533  1758  2350  2916  3423  
45  525  581  640  703  770  841  993  1248  1431  1913  2374  2786  
50  447  494  544  598  655  715  845  1061  1217  1628  2020  2370  
55  397  439  484  531  582  636  751  943  1082  1447  1795  2107  
60  369  408  449 494  541  590  698  876  1005  1334  1667  1957  Beam Angle of Target Lamp (degree) 
65  358  396  436  479  525  573  677  850  975  1304  1618  1899  
 
 
 
 
   Annex 9 
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 9 
  
Table 9-5  Minimum Center Beam Intensity Requiremen t (cd) for MR16   Rated Wattage of Target Lamp (W) 
  5 10 15  20  25  30  35  40  45 50 55 60 
5 2002  2713  3583  4612  5787  7076  8434  9796  11090  12236  13158  13791  
10  1238  1677  2215  2852  3578  4375  5214  6056  6856  7565  8135  8526  
15  799  1083  1431  1842  2310  2825  3367  3911  4428  4885  5253  5506  
20  539  731  965  1242  1559  1906  2272  2639  2987  3296  3544  3715  
25  380  515  680  876  1099  1343  1601  1860  2105  2323  2498  2618  
30  280  379  501  645  809  989  1179  1369  1550  1710  1839  1927  
35  215  292  385  496  622  761  906  1053  1192  1315  1414  1482  
40  173  234  309  398  500  611  728  846  958  1057  1136  1191  
45  145  197  260  334  419  513  611  710  804  887  954  999  Beam Angle of Target Lamp 
(degree) 
50  127  172  228  293  368  450  536  622  705  777  836  876  
 
Remarks: The intermediate values of the center beam  intensity and the beam angle of target 
lamp and the rated wattage of target lamp shall be calculated by linear interpolation between 
two adjacent values. 
  
   Annex 10 
The Hong Kong Voluntary Energy Efficiency Labelling  Scheme    for LED    Lamps – Annex 10 
 Sample of Sample of Sample of Sample of Declaration Letter from Manufacturer Declaration Letter from Manufacturer Declaration Letter from Manufacturer Declaration Letter from Manufacturer     
 
 
Your ref.    
 
        
    
We ________________________________________________ _______________ 
                        (name of manufacturer) 
 
of ________________________________________________ _______________ 
        (address) 
 
declare under our sole responsibility that product 
 
___________________________________________________ ______________ 
(name, type or model, lot, batch or serial number, possibly sources and numbers of items) 
 
to which this declaration relates is: 
 
 *intended to replace _______________________________ _ 
      (target lamp type) 
________________________________ 
     (target lamp wattage) 
________________________________ 
  (target lamp beam angle, when applicable) 
 *not intended to replace any existing lamp such as i ncandescent lamp, directional reflector 
lamp, etc. 
 
________________________ 
(name of authorized officer) 
 
________________________ 
(title of authorized officer)  
 
________________________ 
(date of issue) 
 
________________________ 
(signature) 
 
________________________ 
(company seal)  
 *Please tick the appropriated check box