1 Requirements  on Minimum Energy Performance Standard  and Energy 
Efficiency Rating  Label ling and Inspection  of Electric Rice Cookers  
Subject：Announcement for the Requirements  on Minimum Energy Performance 
Standard and Energy Efficiency Rating Labe lling and Inspection of 
Electric Rice Cookers  
Basis： Paragraph 4, Article 14 of the Energy Management Act  
Announcement ： 
1. Domain：The Electric Rice Cookers  denoted in this announcement are those meeting 
the definition in CNS 2518 , and promulgated by the Bureau of Standards, Metrology 
and Inspection (BSMI) of the Ministry of Economic Affairs (MOEA) as products 
requiring inspection before marketing.  
2. Test Method ：CNS 2518  
3. M inimum Energy Performance Standard  (MEPS)：The tested value of thermal 
efficiency  (%) shall not be less than the standard  value  specified in the Table 1 
(minimum energy performance standard  requirements  for Electric Rice Cookers ) and 
be more than 97 % of the declared  value on products . Both criteria must be met.  
4. Labe lling Scheme for Energy Efficiency Rating  
(1) Minimum  size of displayed label：60mm (long)40mm(width) , its samples and 
specifications  as follow： 
     
 2   
(2) Content of energy efficiency rating label 
(i) Product name ( Electric Rice Cookers ); 
(ii) Product model number ; 
(iii) Type(Direct heating/Indirect heating/IH heating ); 
(iv) Thermal  efficiency value  (%) 
(v) Energy efficiency rating ; 
The products shall be classified for energy efficiency rating based on the thermal  
efficiency  value  shown in the following Table 2 and shall be marked on  the 
energy efficiency labelling . 
(vi) The year and announcement number of t he Announcement containing the c riteria 
for energy efficiency r ating of  Electric Rice Cookers  used for this rating 
determination ; 
(vii) Registration number for this rating ; 
(viii) Other text as designated by the Central Competent Authority . 
(3) Display or post the label  
While manufacturing or importing the products,  the dealer shall display or attach the 
energy efficiency label in /on the product instruction/manual,  or place the label in a 
prominent area in  front of the products.  While displaying or marketing the products, 
the dealer shall  display or post the energ y efficiency rating label in  front of the 
products, and shall  not hide, destroy or adopt other means to  the label not 
recognizable by the  consumers.  
(4) Energy efficiency rating  
The products shall be classified for energy efficienc y rating based on the thermal  
efficiency  value  shown in the following Table 2 and shall be marked on  the energy 
efficiency labelling.  
After the afo rementioned application is  approved by the Central Competent  
Authority, the dealer may download the energy efficiency rating label from the  
 3 management system and start using the label.  
(5) Market surveillance  
In principle, the number of products shall be decided  based on the sales volume  of the 
designated model number of the previous year, and  one sample shall be tested out of 
4,000 units of such product model sold. If less than  4,000 units were sold for that 
model number in the prior year, one sample shall be  tested. Nonetheless, the Central 
Competent Authority may change the sampling ratio  based on actual needs.  
 
Table 1  MEPS  for Electric Rice Cookers  
 
MEPS for  thermal  efficiency value  (%) 
72.0 
Note： 
1. The Electric Rice Cookers  denoted in this announcement are those meeting the 
definition in CNS 2518 . The calculated thermal efficiency value shall be rounded off to 
one decimal place. Thermal efficiency(%)  equals the c ooker heating 
capacity(Qt)( sensible heat capacity (Q1 ，Wh) plus latent heat capacity (Q2 ，Wh)) 
divided by T otal energy consumption(E, Wh) . 
2. sensible heat an d latent heat are defined by the following equation:  
sensible heat capacity  Q1=1.16×(W 1+W 2)×(T 2-T1) 
latent heat capacity  Q2=Δw×0.6269  
W1：mass of distilled water  at a rate of 64%  of cooker’s inner container  (kg) 
W2：mass of distilled water added to the outer container (kg) 
T1：initial distilled water temperature (℃) 
T2：highest distilled water temperature (℃) 
Δw：water evaporation (g) 
3. The tested thermal efficiency value shall not be lower than the standard value shown in 
the table above. The tested value should be at least 97% or more of the product 
declared value.  Both criteria must be met.  
  4 Table 2  Energy efficiency rating  standard  requirements  for Electric Rice Cookers  
Energy efficiency rating  Thermal  efficiency value  (%) 
Class 1 90.0 
Class 2 85.0 
Class 3 80.0 
Class 4 76.0 
Class 5 72.0