Omani Standard      OS/___________  
 
 
 
 
مشروع نهائي  
مواصفة قياسية عمانية    
 
 
 
متطلبات كفاءة الطاقة والتشغيل ووضع البطاقات لمصابيح (  LED) ذاتية الكبح 
 
Energy efficiency, functionality and labelling 
requirements for self -ballasted Light Emitting Diode 
(LED) lamps  
 
 
   
المديرية العامة للمواصفات والمقاييس  
وزارة التجارة والصناعة   
 
 
 
 
 
هذه الوثيقة مشروع لمواصفة قياسية عمانية تم توزيعها لإبداء الرأي والملاحظات بشأنها، لذلك فإنها  
عرضة للتغيير والتبديل، ولايجوز الرجوع إليها كمواصفة قياسية عمانية معتمدة إلا بعد اعتمادها.  
 Omani Standard      OS/___________  
 
 
تقديم 
 
المديرية العامة للمواصفات والمقاييس جهاز التقييس الوطني بالسلطنة أنشئت بموجب المرسوم السلطاني رقم  
39/1976، ومن مهامها إعداد المواصفات القياسية العمانية واللوائح الفنية استنادا للمرسوم السلطاني رقم   
1/87 . 
وقد قامت دائرة المواصفات بالمديرية بإعداد هذه المواصف ة القياسية العمانية "  متطلبات كفاءة الطاقة  
والتشغيل ووضع البطاقات لمصابيح ( LED) ذاتية الكبح” 
وقد تم إعداد المشروع   باللغة الإنجليزية  بعد استعراض المواصفات القياسية الأوربية والدولية . 
وقد اعتمدت هذه المواصفة كمواصفة قياسية عمانية ملزمة، بتاريخ   /  /       ه، الموافق  /  /      
م 
 
Forward  
General Directorate of Standardization and Metrology (DGSM) is the National standard body 
in Sultanate of Oman. It was established according to Royal Decree No. 39/1976. DGSM is 
responsible of issuing Omani standards and t echnical regulations.  
Director of standards, in the DGSM has prepared this standard “Energy Efficiency, 
Functional and Labelling  requirements for self -ballasted Light Emitting Diode (LED) Lamps” .  
The draft standard has been prepared in English language ba sed on relevant European 
Standards.  
This standard  was approved as an Omani Technical Regulation on _________________  
  Omani Standard      OS/___________  
 
 
Contents  
1. Scope  ................................ ................................ ................................ ................................ .. 4 
2. Normative references  ................................ ................................ ................................ .........  4 
3. Definitions  ................................ ................................ ................................ ...........................  4 
4. Functionality requirements and prequalification criteria  ................................ ....................  7 
5. Energy efficiency rating  ................................ ................................ ................................ .... 10 
6. Label particulars  ................................ ................................ ................................ ...............  11 
7. Information to be visibly displayed for end -consumers  ................................ ....................  17 
8. Inspection /check testing guidelines ................................ ................................ .................  17 
Annex -A: Relevant standards  ................................ ................................ ................................ .. 18 
Annex -B: Special purpose lamps  ................................ ................................ ............................  21 
Annex -C: Information to be displayed for end -user awareness  ................................ ..............  22 
Annex -D: Inspection /check testing for market surveillance  ................................ ...................  23 
Annex E – Registration form  ................................ ................................ ................................ .... 25 
 
  Omani Standard      OS/___________  
 
 
Energy efficiency, functionality and labelling 
requirements for self -ballasted Light Emitting Diode 
(LED) lamps in the Sultanate of Oman  
1. Scope  
This standard specifies the energy efficiency, functionality, and product information 
requirements for self -ballasted LED lamps for general lighting services that works on single -
phase alternating current supply up to and including 240V, 50Hz, being manufactured, 
imported or sold in Oman.  
The standard covers the following types of self -ballasted LED lamps :  
a. Both the directional and non -directional lamps .  
b. Lamps having a luminous flux above 60 lumens and below 12,000 lumens .  
This standard does not cover the following types of LED lamps :  
a. Lamps which are used in special purpose applications (Special purpose lamps are 
explained in ‘Annex -B: Special purpose lamps’ ). 
b. Lamps not intended for general lighting purposes . 
2. Normative references  
For the purpose of verification and compliance with the requirements of this standard, the 
relevant standards listed in ‘Annex -A: Relevant standards ’ must be r eferred in conjunction 
with this document.  
 
3. Definitions  
3.1 ‘Ballast’  means lamp control gear inserted between the supply and one or more 
discharge lamps which, by means of inductance, capacitance or a combination of 
inductance and capacitance, serves mainly to limit the current of the lamp(s) to the 
required value . 
3.2 ‘Beam A ngle’  means the angle between two imaginary lines in a plane through the 
optical beam axis, such that these lines pass through the centre of the front face of the 
lamp and through points at which the luminous intensity is 50 % of the centre beam 
intensity,  where the centre beam intensity is the value of luminous intensity measured 
on the optical beam axis . 
3.3 ‘Chromaticity’  means the property of a colour  stimulus defined by its chromaticity 
coordinates, or by its dominant or complementary wavelength and purity  taken 
together.  Omani Standard      OS/___________  
 
 
3.4 ‘Colour  consistency ’ means the maximum deviation of chromaticity coordinates 
(x and y) of  a single lamp from a chromaticity center point (cx and cy), expressed as 
the size (in steps) of the Macadam ellipse formed around the chromaticity ce nter point 
(cx and cy). MacAdam ellipses refer to the regions (in the form of an ellipse) on a 
chromaticity diagram which contain all Colour s that are indistinguishable to the 
average human eye from the Colour  at the center of the ellipse.  
3.5 ‘Colour  rendering (Ra) ’ means the effect of an illuminant on the Colour  appearance of 
objects by conscious or subconscious comparison with their Colour  appearance under 
a reference  illuminant.  
3.6 ‘Control device ’ means an electronic or mechanical device controlling or monitoring 
the luminous flux of the lamp by other means than power conversion for the lamp, such 
as timer switches, occupancy sensors and daylight standard devices. In addition, 
phase -cut dimmers shall also be considered as control devices.  
3.7 ‘Correlated Colour  temperature (Tc [K]) ’ means the temperature of a Planckian 
(black body) radiator who se perceived colour most closely resembles that of a given 
stimulus at the same brightness and under specified viewing conditions . 
3.8 ‘Direct ional  Lamp ’ a lamp having a t least 80% light output within a solid angle of π 
steradians corresponding to a cone with an angle of 120˚.  
3.9 ‘Initial luminous flux ’ means the luminous flux of a lamp after a short operating 
period.  
3.10 Lamp : means a unit emitting light, whose performance can be assessed 
independently, and which consists of one or more light sources. It may include 
additional components necessary for start ing, power supply or stable operation of the 
unit or for distributing, filtering or transforming the optical radiation, in cases where 
those components cannot be removed without permanently damaging the unit.  
3.11 Lamp cap : means that part of a lamp , which prov ides the connection to the electrical 
supply by  means of a lamp holder or lamp connector , and may also serve to retain the 
lamp in the lamp holder.  
3.12 ‘Lamp control gear ’ means a device located between the electrical supply and one or 
more lamps, which provid es functionality related to the operation of the lamp(s), such 
as transforming the supply voltage, limiting the current of the lamp(s) to the required 
value, providing starting voltage and preheating current, preventing cold starting, 
correcting the power factor or reducing radio interference. The device may be designed 
to connect to other lamp control gear to perform these functions. The term does not 
include:  
• Control devices  Omani Standard      OS/___________  
 
 
• External power supplies 1 
3.13 ‘Lamp holder or socket’  means a device which holds the lamp in position, usually by 
having the cap inserted in it, in which case it also provides the means of connecting the 
lamp to the electric supply.  
3.14 ‘Lamp lifetime ’ means the period of operating time after which the fraction of the total 
number of lamps which continue to operate corresponds to the lamp survival factor of 
the lamp under defined conditions and switching frequency. For LED lamps, lamp 
lifetime means the operating time between the start of their use and the moment  when 
only 50 % of the total number of lamps survive or when the average lumen 
maintenance of the batch falls below 70 %, whichever occurs first . 
3.15 ‘Lamp lumen maintenance factor (LLMF) ’ means the ratio of the luminous flux 
emitted by the lamp at a given tim e in its life to the initial luminous flux.  
3.16 ‘Lamp start time ’ means the time needed, after the supply voltage is switched on, for 
the lamp to start fully and remain alight.  
3.17 ‘Lamp survival factor (LSF) ’ means the defined fraction of the total number of lamp s 
that continue to operate at a given time under defined conditions and switching 
frequency.  
3.18 ‘Lamp warm -up time ’ means the time needed after start -up for the lamp to emit a 
defined proportion of its stabilized luminous flux.  
3.19 ‘LED lamp ’ means a lamp incorpo rating one or more LED modules. The lamp may be 
equipped with a cap.  
3.20 ‘LED module ’ means an assembly having no cap and incorporating one or more LED  
packages on a printed circuit board. The assembly may have electrical, optical, 
mechanical and thermal compo nents, interfaces and control gear.  
3.21 ‘LED package ’ means an assembly having one or more LED(s). The assembly may 
include  an optical element and thermal, mechanical and electrical interfaces.  
3.22 ‘Light -emitting diode (LED) ’ means a light source , which consists of a solid-state  
device  embodying a p -n junction. The junction emits optical radiation when excited by 
an electric  current.  
3.23 ‘Lighting ’ means the application of light to a scene, objects or their surroundings so 
that hu mans  may see them . 
 
1External power supplies are power adaptors used to convert household electric current into lower 
voltage (AC) current - or DC current - in order to operate a large variety  of household and office 
products like electric toothbrushes and shavers, mobile and cordless phones, laptops and tablets, as 
well as printers, routers and modems.  Omani Standard      OS/___________  
 
 
3.24 ‘Light source ’ means a surface or object designed to emit mainly visible optical 
radiation  produced by a transformation of energy. The term ‘visible’ refers to a 
wavelength of 380 -780nm.  
3.25 ‘Luminous flux ( 𝚽)’ means the quantity derived from radiant flux (radiant power) by 
evaluating the radiation in accordance with the spectral sensitivity of the human eye. 
Without further specification, it refers to the initial luminous flux.  
3.26 ‘Luminous intensity (candela or cd)’ means the quotient of the luminous flux leaving 
the source and propagated in the element of solid angle containing the given direction, 
by the  element of solid angle.  
3.27 ‘Nominal value ’ means the value of a quantity used to designate and identify a 
produ ct. 
3.28 ‘Non -directional lamp’  means a lamp that is not a direct ional  lamp.  
3.29 ‘Power factor ’ means the ratio of the absolute value of the active  power to the 
apparent power under periodic conditions.  
3.30 ‘Premature failure ’ means when a lamp reaches the end of its life after a period in 
operation , which is less than the rated lifetime  stated in the technical documentation.  
3.31 ‘Rated value ’ means the value of a quantity used for specification purposes, 
established for  a specifie d set of operating conditions of a product. Unless stated 
otherwise, all  requirements are set in rated values.  
3.32 ‘Self-ballasted lamp ’ Unit which cannot be dismantled without being permanently 
damaged, provided with a lamp cap and incorporating a LED light s ource and any 
additional elements necessary for stable operation of the light source.  
3.33 ‘Special purpose lamps ’ means a lamp that is intended for use in special 
applications . Special applications are those that require technical parameters not 
necessary for the purposes of lighting average scenes or objects in average 
circumstances.  The types of special applications are listed in ‘ 
  Omani Standard      OS/___________  
 
 
3.35 Annex -B: Special purpose lamps ’. 
3.36 Switching cycle  means the sequence of switching the lamp on and off at set intervals.  
3.37 Useful luminous flux ( 𝛷𝑢𝑠𝑒): means the part of the luminous flux of a lamp f alling 
within the beam angle used for calculating the lamp’s energy efficiency.  
 
4. Functionality requirements and p requalification criteria  
LED lamps covered in this standard must meet the requirements  mentioned in following 
respective standards for safety and performance (the standards shall be read including 
amendments from time to time) : 
a) IEC 62560 for Self-ballasted  LED lamps  by voltage > 50V – Safety specifications  
b) IEC 62612 for Self-ballasted  LED lamps  with supply voltages > 50V – Performance 
requirements 
c) IEC 61000-3-2 Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for 
harmonic current emissions (equipment  input current ≤ 16 A per phase) 
d) IEC 62471 for Photobiological Safety of Lamps and L amp Systems 
The lamp functionality requirements are outlined in Table 1 and it is applicable to both non-
directional and direct ional  LED lamps . 
Table 1: Functionality requirements  
Functionality parameter  Requirement  
Lamp survival factor (LSF) at 6,000h  ≥ 0.90  
Lamp Lumen Maintenance factor (LLMF) 
at 6,000h  ≥ 0.80  
Number of switching cycles before failure  ≥ 15,000 if rated lamp life ≥ 30,000 h  
Otherwise: ≥  half the rated lamp life expressed 
in hours  
Starting time  < 0.5s  
Lamp warm -up time to 95% of ɸ < 2s 
Premature failure rate  ≤ 5.0% at 1,000h  
Colour  rendering (Ra)  ≥ 80 
Colour  consistency  Variation of chromaticity coordinates within a Omani Standard      OS/___________  
 
 
six-step MacAdam ellipse or less.  
Lamp power factor (PF) for lamps  P ≤ 2W: No requirement  
2W < P ≤ 5W: PF > 0.4  
5W < P ≤ 25W: PF > 0. 7 
P > 25W: PF > 0.9  
 
The prequalification criteria for the pu rposes of energy efficiency labelling in Oman are 
outlined in Table 2. 
Table 2: Prequalification criteria  
Type of Lamp  Prequalification Criteria  
Non-directional LED 
lamps  𝑷𝒍𝒂𝒎𝒑≤𝟎.𝟐𝟒√∅+𝟎.𝟎𝟏𝟎𝟑∅. 
Where , 
• 𝑃𝑙𝑎𝑚𝑝 is maximum allowable power consumption  
• ∅ is the rated luminous flux (Φ)  
Directional LED lamps  EEI < 0.5 
Where EEI is  energy efficiency index (EEI) of the lamp  
Refer section – 
Energy efficiency rating  Energy efficiency rating for calculating 
the EEI of the lamp  
  Omani Standard      OS/___________  
 
 
5. Energy efficiency rating  
The energy efficiency rating of LED lamps shall be determined based on the energy 
efficiency index (EEI) as outlined in Table 3. 
Table 3: Energy efficiency  classes  for LED l amps 
Energy Efficiency Index (EEI)  Energy 
efficiency class  
(Arabic)  Equivalent e nergy 
efficiency  class 
(English) EEI for non -
directional lamps  EEI for directional 
lamps  
EEI ≤ 0.11  EEI ≤ 0.13  أ A 
0.11 < EEI ≤ 0.17 0.13 < EEI ≤ 0.18 ب B 
0.17 < EEI ≤ 0.24 0.18 < EEI ≤ 0.40 ج C 
0.24 < EEI ≤ 0.60 0.40 < EEI ≤ 0.95 د D 
0.60 < EEI ≤ 0.80 0.95 < EEI ≤ 1.20 هـ E 
0.80 < EEI ≤ 0.95 1.20 < EEI ≤ 1.75 و F 
EEI > 0.95  EEI > 1.75  ز G 
Note: For labelling  purposes, the Arabic letters shall b e used. The equivalent English 
version is only provided for informational purposes 
 
For the calculation of the energy efficiency index (EEI) of a model, its corrected rated power 
for any control gear losses is compared with its reference power.  The EEI is calculated as 
follows and rounded to two decimal places:  
𝐸𝐸𝐼=Pcor
Pref 
𝐏𝐜𝐨𝐫 is defined as:  
For self-ballasted lamps , 𝑃𝑐𝑜𝑟 is the rated power ( 𝑃𝑟𝑎𝑡𝑒𝑑). For models with external control 
gear, 𝑃𝑐𝑜𝑟 is the rated power ( 𝑃𝑟𝑎𝑡𝑒𝑑) corrected in accordance with the corrections factors. As 
this standard is only applicable to self -ballasted type LED lamps, the power is not corrected 
for any control gear losses. The rated power 𝑃𝑟𝑎𝑡𝑒𝑑  of the lamps is measured at their nominal 
input voltage.  
𝑷𝒓𝒆𝒇 is defined as:  
𝑃𝑟𝑒𝑓 is the reference power obtained from the useful luminous flux of the model ( 𝛷𝑢𝑠𝑒) by the 
following formula e me ntioned in Table 4. Omani Standard      OS/___________  
 
 
Table 4: Formulae for calculating reference power  
Useful luminous flux  Relevant formulae for calculating 
reference power  
For models with 𝛷𝑢𝑠𝑒 < 1,300 lumen  𝑃𝑟𝑒𝑓=0.88√𝛷𝑢𝑠𝑒+0.049×𝛷𝑢𝑠𝑒 
For models with 𝛷𝑢𝑠𝑒 ≥ 1,300 lumen   𝑃𝑟𝑒𝑓=0.07341×𝛷𝑢𝑠𝑒 
 
The useful luminous flux ( 𝛷𝑢𝑠𝑒) is defined in accordance with Table 5. 
Table 5: Definition of useful luminous  flux 
Type  Useful luminous flux (𝛷𝑢𝑠𝑒 ) 
Non-directional lamps  Total rated luminous flux (𝛷) 
Directional lamps with a beam angle ≥ 90° 
other than filament lamps and carrying a 
textual or graphical warning on their 
packaging that they are not suitable for 
accent lighting  Rated luminous flux present in a 120° cone 
(𝛷120˚)  
Other directional lamps  Rated luminous flux present in a 90° cone 
(𝛷90˚)  
 
6. Label particulars  
Label  design  
The label shall be printed as illustrated in  Omani Standard      OS/___________  
 
 
 
Figure 1 and should be fixed and non -removable.  The energy efficiency class shall each be 
represented: with a fixed number of  Colour -coded bars as outlined in Table 3 and illustrated 
in  
 
 
(a) 
(b) 
(d) 
(e) (f) (g) 
(h) 
(i) (c) 
66 mm 26 mm Height  
34 mm Width  Omani Standard      OS/___________  
 
 
 
Figure 1 The label shall be printed directly on one side of the individual packaging of the 
product.  The label shall be (66 mm wide and 73 mm high)  as in  
 
 
(a) 
(b) 
(d) 
(e) (f) (g) 
(h) 
(i) (c) 
66 mm 26 mm Height  
34 mm Width  Omani Standard      OS/___________  
 
 
 
Figure 1 without alteration.  
The label shall be printed on  the most prominent part of the individual product packaging to 
be easily visible to the end -user.  
The label design in the Figure 2 and Figure 3 which is comparatively larger in size can be 
adapted if the space on the packaging can accommodate this. Also this bigger label can be 
printed in the product br ochures.  
 
Information on the label  
The fields from (a) to (i) outlined in Figure 1 shall comply with the following requirements:  
Field (a): This field shall display the logo of the Directorate General for Standards and 
Metrology (DGSM).  
Field (b): This fi eld shall reflect the energy efficiency class, which the product attained, 
based  on its energy efficiency index (EEI).  
Field (c): This field shall have a QR code  representing the main characteristics of the lamp, 
this may include the following items based on the data provided in the registration form  
(Annex E): 
 
 
(a) 
(b) 
(d) 
(e) (f) (g) 
(h) 
(i) (c) 
66 mm 26 mm Height  
34 mm Width  Omani Standard      OS/___________  
 
 
• Manufacturer name 
• Model number  
• Country of origin 
• Luminous flux (lumens) 
• Lifetime (h) 
• Rated power (W) 
• Correlated Colour temperature (K)  
• EEI (unit-less) 
• Efficacy (lumens/W) 
Field (d): this field identifies the brand name of the product  
Field (e): this field identifies the country of origin  
Field (f): this field identifies the model number  
Field (g): this field identifies the lighting type  (Self Ballasted LED Lamps)  
Field (h): this field identifies  the registration and standard reference numbers  (Note: It is 
proposed that the Omani label should provide information on both Safety and Performance 
standards nos. adhered)  
Field (i): this field identifies the legal statement  
 Omani Standard      OS/___________  
 
 
 
Figure 1: Small l abel for LED lamps  (informative ) 
 
 
(a) 
(b) 
(d) 
(e) (f) (g) 
(h) 
(i) (c) 
66 mm 26 mm Height  
34 mm Width  Omani Standard      OS/___________  
 
 
 
 
(a) 
(b) 
(c) 
(d) 
(e) 
(f) (g) 
(h) 
(i) Omani Standard      OS/___________  
 
 
Figure 2Standard label for LED lamps  Omani Standard      OS/___________  
 
 
 
Figure 3Dimensions of the label  
  
Omani Standard      OS/___________  
 
 
7. Information to be visibly displayed for end-consumers  
Information to be displayed for end -user awareness  shall be in -line with the requirements 
mentioned in Annex C . 
 
8. Inspection /check testing guidelines  
For evaluating the performance of LED lamps, the standards developing authority is 
empowered  to conduct inspection /check testing of lamps. The broad guidelines for 
inspection /check testing for market surveillance  is mentioned in Annex D.   
 
  Omani Standard      OS/___________  
 
 
Annex -A: Relevant standards  
The relevant testing standards and compliance criteria for non-directional a nd directional 
lamps are listed in Table 6 and Table 7 respectively . 
Table 6: Reference standards for non-directional LED lamps  
Parameter  Reference  Remarks  
Lamp efficacy  IEC 62612, 9.3 efficacy.  The average efficacy values  shall 
be calculated from the arithmetic 
mean of each  product's individual 
efficacy.  
Rated lifetime, lamp  lifetime  EN 62612  Provides procedures for 6,000 h 
testing time.  
Lamp survival factor  IEC 62612, 11.2  The compliance criteria of the 
regulations shall be applied.  
Lumen maintenance, lamp  
lumen maintenance factor  IEC 62612, 11.2  The compliance criteria of the  
regulations shall be applied.  
Number of switching cycles  IEC 62612, 11.3.3  - 
Starting time  - Reliable, accurate and  
reproducible measurement 
procedures shall be used.   
The method prescribed in IEC 
60969, at present  
34A/1701/CDV Annex B  for CFL 
may be adapted.  
Premature failure rate  IEC 62612, 11.2  An additional read point at  1,000 
h and the compliance criteria 
accordin g to the standard  shall be 
applied.  
Lamp power factor  IEC 61000 -3-2 - 
Chromaticity coordinates  prEN 13032 -4 - 
CCT prEN 13032 -4 - 
CRI prEN 13032 -4 - 
Luminance  CIE 18.2  - Omani Standard      OS/___________  
 
 
Specific effective UV  radiant 
power  IEC 62471  - 
Lamp dimensions  IEC 62612, 6  - 
Dimmability  IEC 62560, 5.2  The presence of a symbol or  
warning shall be checked.  
Lamp caps  IEC 62560  - 
 
Table 7: Reference standards for directional LED lamps  
Parameter Reference  Remarks 
EEI CIE 84 for  general conditions of 
luminous flux measu rement; L2(A P)005 
for cone luminous flux; IEC 62612, 9.3 
for efficacy; IEC 62612, 9.1 a nd Annex  A 
for luminous flux, IEC 62612, 8.1 a nd 
Annex  A for po wer The average EEI  value 
shall be calculated from the 
arithmetic mean of  each  
product's individual EEI. 
Rated lifetime, 
lamp lifetime EN 62612   
Lamp survival 
factor IEC 62612, 11.2  The compliance criteria of 
the regulations shall be 
applied. 
Lumen 
maintenance IEC 62612, 11.2  The compliance criteria of 
the regulations shall be 
applied. 
Number of 
switching cycles IEC 62612, 11.3.3  - 
Starting time - Reliable, accurate and 
reproducible measu rement 
procedures shall be used. 
The method prescribed in 
IEC 60969, at present  
34A/1701/CDV Annex B  
for CFL may be adapted.  Omani Standard      OS/___________  
 
 
Premature  failure 
rate IEC 62612, 11.2  An add itional read point at 
1,000h  and the compliance  
criteria acc ording to the 
regulations shall be 
applied. 
Lamp power factor 
(only for lamps wi th 
integrated con trol 
gear) IEC 61000 -3-2 - 
CCT prEN 13032 -4 - 
CRI prEN 13032 -4 - 
Colour consistency EN 62612, 10.1  - 
Spec tral power 
distribution CIE 63 - 
Lamp dimensions IEC 62612, 6  - 
Beam angle IEC 62612, 9.2  - 
Peak  intensity IEC 62612, 9.2  - 
Dimmability  IEC 62560, 5.2  The presence of a symbol 
or warning shall be 
checked. 
Cone luminous  flux L2(A P)005 - 
Cap IEC 62560  - 
 
  Omani Standard      OS/___________  
 
 
Annex -B: Special purpose lamps  
Lamps that are intended for use in special applications that require technical parameters not 
necessary for the purposes of general lighting in average circumstances. They are of the 
following types:  
1. Applications where the primary purpose of the light is not lighting, such as:  
(i) Emission of light as an agent in  chemical or biological processes (such as 
polymerisation , ultraviolet light used for curing/drying/hardening, photodynamic 
therapy, horticulture, pet -care, anti - insect products) .  
(ii) Image capture and image projection (such as camera flashlights, photocopie rs, 
video projectors) .  
(iii) Heating (such as infrared lamps ).  
(iv) Signalling  (such as traffic control or airfield lamps) .  
 
2. Lighting applications where:  
(i) The spectral distribution of the light is intended to change the appearance of the 
scene or object lit, in ad dition to making it visible (such as food lighting or coloured 
lamps ); or  
(ii) The spectral distribution of the light is adjusted to the specific needs of technical  
equipment, in addition to making the scene or object visible for humans (such as 
studio lighting, show effect lighting, theatre lighting); or  
(iii) The scene or object lit requires special protection from the negative effects of the 
light source (such as light ing with dedicated filtering for photosensitive patients or 
photosensitive museum exhibits); or  
(iv) Lighting is required only for emergency situations (such as emergency lighting 
luminaires or control gears for emergency lighting); or  
(v) The lighting products must withstand extreme physical conditions (such as 
vibrations or temperatures below – 20 °C or above 50 °C) .  
 
3. Products incorporating lighting products, where the primary purpose is not lighting and 
the product is dependent on energy input in fulfilling it s primary purpose during use (such 
as refrigerators, sewing machines, endoscopes, blood analysers) . 
 
  Omani Standard      OS/___________  
 
 
Annex -C: Information to be displayed for end -user awareness  
 
Information to be displayed on the lamp itself  
The value of the nominal useful luminous flux (‘lm’) , of the colour temperature  (‘K’) and of the 
nominal beam angle  (‘°’) shall be displayed in a legible font on the surface of the lamp if, 
after the inclusion of safety -related information such as power and voltage, there is sufficient 
space avai lable for it on the lamp without unduly obstructing the light coming from the lamp.  
If there is room for only one of the three values, the nominal useful luminous flux shall be 
provided. If there is room for two values, the nominal useful luminous flux an d the colour 
temperature shall be provided.  
 
Information to be visibly displayed to end -users, on the packaging and 
on freely  access ible public domains ( websites ) 
The information in listed from (a) to ( i) in this section below shall be displayed on free a ccess 
websites and in any other form the manufacturer deems appropriate.  
If the product is placed on the market in a packaging containing information to be visibly 
displayed to the end - users, prior to their purchase, the information shall also be clearly and 
prominently indicated on the packaging.  
The information does not need to use the exact wording on the list below. It may be 
displayed in the form of graphs, drawings or symbols rather than text.  
a. Nominal useful luminous flux displayed in a font at lea st twice as large as any display 
of the nominal lamp power .  
b. Nominal lifetime  of the lamp in hours ( no longer  than the rated lifetime ).  
c. Colour temperature, as a value in Kelvins and expressed graphically or in words .  
d. Number of switching cycles before premature failure .  
e. Warm -up time up to 60 % of the full light output (may be indicated as ‘instant full light’ 
if less than 1 second) .  
f. A warning if the lamp cannot be dimmed or can be dimmed only on specific dimmers; 
in the latter case a list of co mpatible dimmers shall be also provided on the 
manufacturer's website .  
g. If designed for optimum use in non -standard conditions (such as ambient 
temperature Ta ≠ 25 °C or specific thermal management is necessary), information 
on those conditions .  
h. Lamp dime nsions in millimetres (length and largest diameter)  Omani Standard      OS/___________  
 
 
i. Nominal beam angle in degrees  
 
Annex -D: Inspection  /check testing for market surveillance  
The inspecting authority shall draw a sample batch of a minimum of twenty lamps  of the 
same model from the same manufacturer, where possible obtained in equal proportion from 
four randomly selected sources, unless  specified otherwise in  Table 8. 
The lamp model shall be considered to comply with the requirements laid down in this 
standard if:  
• The lamps in the batch are accompanied by the required and correct product 
information, as me ntioned in ‘Annex -C: Information to be displayed for end -user 
awareness ’. 
• The parameters of the lamps in the batch listed in  Table 8 shows no non -compliance 
for any of the parameters.  
Table 8: Inspection and check testing r equirements  
Parame ter Remarks  /Procedure 
Lamp s urvival 
factor  at 6,000 h 
(for LED lam ps 
only) The test shall end  
• when the required number of hours is met, or  
• when more than two lamps fail,  
whichever occurs first  
Compliance: A maximum of two out of every 20 lamps in the test 
batch may fail before the required number  of hours.  
Non-compliance: Otherwise 
Number  of 
switching c ycles 
before failure The test shall end when the required number  of switching cycles is 
reached, or when more than one out of every 20 lam ps in the test 
batch have reached the end of their life, whichever occurs first. 
Compliance: At least 19 of every 20  lamps in the batch have no 
failure after the required number  of switching cycles is reached. 
Starting time Compliance: The ave rage starting time of the lamps in the test batch  
is not higher than the required starting time  plus 10 %, and no lamp  
in the sample bat ch has a starting time lo nger than two t imes the 
required starting time. Omani Standard      OS/___________  
 
 
Premature failure 
rate The test shall end 
• when the required number of hours is met, or 
• when more than one lamp fails, whichever occurs first. 
Compliance: Not more than one out of every 20 lamps in the test 
batch may fails before the required number  of hours. 
Colour  rendering 
(Ra) Compliance: The ave rage Ra of t he lamps in the test bat ch is not 
lower than three points below the required value, and no lamp in  the 
test batch has a Ra value  that is mo re than 3,9 points below the 
required value . 
Lumen 
maintenance at 
end of life a nd 
rated li fetime For these purposes, ‘end of life’ shall mean the point in time w hen 
only 50 %  of the lamps are projected to  survive or  when the ave rage 
lumen maintenance of  the batch is projected to  fall below 70 %, 
whichever is projected to  occur first. 
Compliance: The lumen maintenance at end of life and the lifetime 
values obtained by extrapolation 2 from the lamp survival factor and 
from the average lumen maintenance of the lamps in the test batch 
at 6,000 h are not lower than respectively the lumen maintenance 
and the rated lifetime values declared in the p roduct information 
minus 10 %  
Beam angle  Compliance:  The average results of the lamps in the test batch do 
not vary from the declared beam angle by more than 25 % and the 
beam angle value of each individual lamp in the test batch does not 
deviate by more than 25 % of the rated value . 
Peak intensity  Compliance:  The peak intensity of each individual lamp in the test 
batch is not less than 75 % of the rated intensity of the model  
Non-compliance:  Otherwise  
Other parameters 
(Energy efficiency 
index)  Compliance:  The average results of the lamps in the test batch do 
not vary from the limit, threshold or declared values by more than 10 
%. 
Non-compliance:  Otherwise.  
 
  
 
2 Extrapolation shall be as per reference standard (TM 21 standard may be a reference)  Omani Standard      OS/___________  
 
 
Annex  E – Registration form  
APPLICATION FOR REGISTRATION OR RENEWAL OF REGISTRATION OF LED 
LAMPS  FOR ENERGY EFFICI ENCY LABEL IN OMAN  
SECTION 1: APPLICATION DETAILS 
I hereby  apply for registration of LED Lamps for the purpose of energy efficiency labelling i n 
the Sultanate of Oman  
Date of  import  : ________________  
Registration no.  : ________________  
 
SECTION 2: APPLICANT DETAILS 
Name of applicant   
Position/Title   
Business address  
  
Telephone   
E-mail  
 
SECTION 3: PARTICULARS OF PRODUCT (LED LAMPS)  
Name of the manufacturer   
Brand name   
Model number   
Country of manufacturing   
Date of manufacturing   
Type of LED lamp  Tick (✓) as appropriate:  
Directional   
Non-directional  
Type and size of lamp cap   
Lamp dimensions   Omani Standard      OS/___________  
 
 
Rated voltage(V)   
Rated frequency (Hz)   
Rated power(W)   
Lifetime   
Rated luminous flux (lumen)   
Correlated Colour Temperature (K)   
 
SECTION 4: TESTING AND TEST REPORT  
Name of the lab   
Test lab accreditation details  Accredited from:  
Validity of Accreditation:  
Lab address   
Test date   
Useful luminous flux 𝛷𝑢𝑠𝑒  (lm)  
Reference power Pref (W)   
Lamp survival factor at 6,000h (%)   
Lumen maintenance at 6,000h (%)   
Number of switching cycles before 
failure   
Starting time(s)   
Lamp power factor   
Colour  rendering (Ra)   
Correlated Colour Temperatures 
(K)  
Efficacy (lm/W)   
Energy Efficiency Index (EEI)   
Energy efficiency class  achieved 
as per Omani Standard 
(OS/_____)  
(Rating)  A أ 
B/ب 
C/ ج Omani Standard      OS/___________  
 
 
D/ د 
E/ هـ 
F/ و 
G/ ز