-1- G/TBT/N/THA/3 23 
Explanatory Memorandum  
 
Draft Ministerial Regulation   
Definitions of high e fficien cy self-ballasted lamps  
B.E. …  
 
 
Principle  
Definition of the energy consumption efficiency value of high efficien cy self-ballasted 
lamps for local manufacture rs and sellers . 
 
Rationale  
In accordance with  Section 6 and Section  23, Clause 1(2) of the Energy Conservation 
Promotion Act, B.E. 2535, with amendments made to the Energy Conservation Promotion Act 
(Issue 2), B.E. 2550 on the conservation  of energy in mac hinery or equipment , and on the 
promot ion of  the us e of energy -efficient material s and equipment, the Minister of Energy  – with 
the guidance of  the National Energy Policy Committee  – shall  issue a ministerial regulation , in 
which it is  deemed appropriate  and necessary  to define  a self-ballasted lamp with an  energy 
consumption efficiency value not lower than  is specified in this ministerial regulation  as a high 
efficien cy self-ballasted lamp.  The objective s of this regulation are to conserve  energy and to 
promote the us e of energy -efficient  materials . This will provide the manufacturers and sellers of 
such products  with the right  to support and assistance from the Energy Conservation Promotion 
Fund. It will encourage and  promote the manufactur e and sale of such products  and  give 
consumers the option to use  high efficien cy self-ballasted lamp s. This will promot e the country’s 
energy consumption efficiency and reduc e pollution . -2-  
DRAFT  
Ministerial Regulation  
Definitions of high e fficien cy self-ballasted lamps  
B.E. … 
-----------------------------------  
In accordance with S ection 6 and Section 23, Clause  1(2) of the Energy Conservation 
Promotion Act, B.E. 2535, with amendments made to the Energy Conservation Promotion Act 
(Issue 2), B.E. 2550  contain ing a number o f provisions related to the limitation of private rights 
and libert y as permitted  in Section 29, together  with Section 33, Section 41 and Section 43 of the 
Constitution  of the Kingdom of Thailand  – with the  guidance  of the National Energy Policy 
Committee  – the Minister of Energy  issue s a ministerial regulation as follows:  
1. In th is ministerial regulation:  
“Self-ballasted lamp” means  a lamp that include s a ballast  inside a s a complete  product 
from the  manufacturer. The equipment cannot be disassembled with out permanent ly damag ing 
the unit . The lamp holder  is connected  to a light emitting unit  and other  necessary  parts to start 
the lamp  and stabili se the light emission . 
 “Colo ur temperature ” means the temperature of a black  body giving the same colour 
temper ature as the  lamp . For example, a ‘daylight ’ fluorescent  lamp  has a colour temperature of 
approximately  6 500 Kelvin , while a  ‘warm -white ’ type has a colour temperature approximately  
2 700 Kelvin.  
"Energy consumption efficiency value” means the energy cons umption efficiency of a 
self-ballasted lamp . 
“Manufacturer ” means an ent erprise that  produces or assembles s elf-ballasted lamps, 
either  locally or abroad.  
“Seller ” means an en terprise that sells s elf-ballasted lamps in the country, where the 
products are e ither produced locally or i mported.  
 
 -3-  
2. A high efficien cy self-ballasted lamp  must have an energy consumption efficiency 
value no t lower  than  the value s specified in the  following table : 
 
Wattage  range  
(watt s) T  4400 K  
(lumen s per watt)  T > 4400 K  
(lumens per watt ) 
 5 to 8  53 – 65 53 – 65 
9 to 14  60 – 70 60 – 70 
15 to 24  65 – 75 62 – 75 
25 to 60  70 - 85 67 - 80 
 
In order to promote  energy cons ervation , the minister shall  review th ese definitions of 
energy consumption efficiency at least  once every  five years, taking into consider ation  the 
economic situation , the government’s energy polic y, the readiness of manufactur e and sales, as 
well as support and assistance given to the manufacturers and sellers  of self-ballasted lamps . 
3. The formula for calc ulating  the energy consumption efficiency value of a self-ballasted 
lamp  is as follows:  
Initial energy consumption efficiency value (lumen s per watt) = Initial lumen s 
                                                                                                                 Initial wattage  
4. The test for finding the energy consumption efficiency value of a self-ballasted lamp 
must  be carried out  by the organi sations specified and announced by the minister.  
5. The standard and methodology of the test for determin ing the energy consumption 
efficiency value of a s elf-ballasted lamp  must comply with the specifications as published  by the 
minister in the Official  Gazette.   
6. This ministerial regulation  is effective from the da te on which  it is published  in the 
Official  Gazette.  
 
Given on:  B.E. … 
 
Minister of Energy