1 
 Requirements on Minimum Energy Performance Standard , Labelling 
and Inspection of Rotodynamic  Water Pump s (Draft)  
1. The end suction single stage rotodynamic water pump  referred to in 
this Announcement are those driven by a three -phase motor (“ Water 
Pumps ” or “products” hereafter), including Water Pumps units with 
motors or Water Pumps without motors , respectively the end suction 
single stage own bearing rotodynamic  water pumps , end suction single 
stage close coupled rotodynamic  water pumps and end suction single 
stage close coupled inline rotodynamic  water p umps , which  shall be 
in compliance with the applicable scope indicated in the Appendix 1.  
2. The Water Pumps  shall be  tested for the energy efficiency measured 
value pursuant to the requirements of grade 2 or higher under 
currently effective  National Standards of the Republic of China 
(“CNS ”) 16017 , or the equivalent  requirements of grade 2 or higher 
under  International Organization for Standardization (“ISO”) 9906 . 
The measured energy efficiency values of the Water Pumps  without 
motors  in the preceding paragraph shall not be lower than the 
minimum energy performance standard requirements for Water Pumps  
(see Appendix 2) and shall be  higher than  or equal to  the product rated 
value.  The measured energy efficiency index values of the Water 
Pumps units with motors shall not be higher than the minimum energy 
performance standard requirements  for Water Pumps  and the product 
rated value  (see Appendix 2) . The three -phase motor driving  the water 
pump which is designated by the C entral Competent Authority's 
announcement shall comply with the minimum energy performance 
standard s for the motor.  
3. While manufacturing or importing the Water Pumps  for domestic use , 
the product manufacturer or importer (hereafter referred to as “the 
dealer ”) shall submit the following documentation to the Central  
Competent  Authority to apply for the registration account and 
password for Minimum Energy Performance Standard M anagement 
System  (hereafter referred to as “Management System”) , in order to  2 
 access the Management S ystem:  
  (1) Original copy of the Application  Form  for Management System 
Registration Account and Password (Appendix 3). 
 (2) Copy of the product dealer’s corporate registration certificate or 
commercial registration certificate, or other equi valent certificates .  
4. After obtaining the Management System account and password, the 
product dealer shall apply for registration  of the energy efficiency via 
the Management System, and submit the following documentation to 
the Central Competent Authority:  
       (1) Original Copy of the Application  Form  for Registration of Water 
Pumps  Energy Efficiency (see Appendix 4).  
(2) Registration of single model:  Each category of Water Pumps shall be 
divided into four ranges (1) 0.75 kW ~ less than 7.5kW;(2) 7.5kW ~ 
less than 37kW; (3) 37kW ~ less than 75kW and (4) above 75kW . 
For application for more than three models  in each range , the 
product  dealer shall provide a copy of the t est report on e nergy 
efficiency of two models designated by the Central  Competent  
Authority with official corporate seal . For application for Water 
Pumps energy efficiency  registration of no more than two models , a 
copy  of the test report on energy efficiency of all models of product 
shall be  submitted with offi cial corporate seal.  
(3) Registration of serial models: For application for more than five 
models of each category of Water Pumps , the product dealer shall 
provide a copy of the test report on energy efficiency of full impeller 
diameter and minimum trimmed  impeller diameter of four models of 
designated product s with official corporate seal . While applying for 
the registration of Water Pumps energy efficiency of no more  than 
four  models of product s, the t est report on e nergy efficiency of full 
impeller diameter and minimum trimmed  impeller diameter of all 
models of product s shall be submitted  with official  corporate seal.  
The energy efficiency test report mentioned in Section 4.(2)and 4.(3) 
shall be issued by  laboratories approved by the  certified authorities 
that are members to the mutual recognition agreement signed by the 3 
 Taiwan Accreditation Foundation (“TAF”) and the International 
Laboratory Accreditation Cooperation (“ILAC”), or  be issued  by 
Underwriters Laboratories Inc. (“UL”) or  Technischer Überwachungs -
Verein (“TÜV”).  
For registration of single model, Water Pumps with  either  different 
rated power, number of poles  of motors , drive link method, inlet and 
outlet diameter or impeller diameter shall be deemed Water Pumps  of 
different basic models . 
For registration of serial models, Water Pumps  with either different 
number of poles  of motors , drive link method or the maximum (full)  
impeller diameter  shall be deemed Water Pumps  of different series . 
5. The Central Competent Authority shall approve the registration number 
of the product  in accordance with  the energy efficiency test report and 
energy efficiency rated value registered by the  product  dealers . The 
Central  Competent  Authority may conduct product sampling and testing  
before approv ing, and the  product  dealer shall bear the rel ated  costs.   
6. When manufacturing or importing the Water Pumps  for domestic use , 
the product  dealer shall re -apply for the registration for the energy 
efficiency in the following instances:  
(1) The design of the product has been changed and such change affects 
its energy efficiency.  
  (2) The product model number has been changed.  
7. While manufacturing or importing the products  for domestic use , the 
product dealer shall post the following items on metal nameplates on 
a prominent area of the products . These items shall all be labeled in 
Traditional Chinese, provided that the  unit symbols, special 
characters, trademark and symbol cannot  be indicated in  Traditional 
Chinese. The  product  dealer shall not conceal, destroy or in any other 
way  make the following information unrecogni zable : 
    (1) Name of the product:  end suction single stage own be aring 
rotodynamic  water pumps  (or ESOB water pumps) , end suction 
single stage close coupled rotodynamic  water pumps  (or ESCC  
water pumps),  and end suction single stage close coupled inline 4 
 rotodynamic  water pumps  (or ESCCi water pumps) ; 
    (2) Product model number: d ifferent  single  model  or series  models shall 
have different model numbers . The model number of Water Pumps 
without motors sh all be different from Water Pumps units with 
motors . The model number for Water Pumps without motors shall 
be XXX -poles+B,  and the model number for Water Pumps units 
with motors shall be  XXX- poles+BM;  
    (3) Rated power (kW): it shall refer to the  rated output power of  
motors ; if this information  has been  labeled on the nameplate of 
motor  in Water Pumps units , it can be omitted; 
    (4) Rated voltage(V) and frequency(Hz) : if this information has been 
labeled on the nameplate of motor  for water pumps units , it can be 
omitted; 
(5) Speed (rpm) : it shall r efer to the speed of the pump at the best 
efficiency point;  
(6) Inlet and outlet d iameters (millimeter, mm): it shall be label ed as 
inlet diameter×outlet  diameter , e.g. , 100×80mm;  
    (7) Full (or maximum)  impeller  diameter  (millimeter, mm); 
(8) Trimmed impeller diameter  (millimeter, mm), if impeller  is not 
trimmed , it can be omitted; 
(9) Flow rate at best efficiency point (square meter/ minute, m3/min).  
If the impeller is trimmed , flow rate  at trimmed impeller shall be 
labeled; otherwise,  flow rate  at full impeller shall be labeled ; 
(10)  Head at best efficiency point  (meter,  m). If the impeller is 
trimmed,  head at trimmed impeller shall be labeled; otherwise, head 
at full impeller shall be labeled ; 
(11) Hydraulic pump e fficiency at best efficiency point (%).  If the 
impeller is trimmed, efficiency at trimmed impeller shall be 
labeled; otherwise, efficiency at full impeller shall be labeled ; 
(12)  Energy Efficiency index EEI: Water Pumps units  shall be labeled ; 
(13) Product r egistration number;  
(14) Number and year of manufacture;  5 
 (15) Production country or region;  
(16) Name of the manufacturer or OEM consigner : for imported 
products , the name of the manufacturer or OEM consigner, agent, 
or distributor shall be labeled.  
  Water Pumps shall be labeled in conformity with the requirements set 
forth in the preceding paragraph while  being exhibited or sold . 
8. The product dealer shall report the volume of product sales of the 
preceding year in the Management System by end of February each 
year .  
9. The Central  Competent  Authority may designate the model and volume 
of Water Pumps annua lly for  product sampling and testing.  The product  
dealer shall send such  product to the designated testi ng laboratory for 
testing within the period  informed by the Central Competent Authority .. 
For products fail to meet the requirements in section 2, the Central 
Competent Authority will request related manufacturers to re -submit 
samples for re -testing. The r e-tested samples shall be of the same model 
and twice as many as the first -tested samples. All the incurred cost 
associated with the re -testing shall be borne by manufacturers.  
10. If the product testing or re -testing is not conducted, or if the re-tested 
samples do not completely comply with the requirements, the Central 
Competent Authority shall act in accordance with Articles 21 and 24 of 
the Energy Management Act. For those fail to complete the corrective 
actions within the designated period, the Central Competent Authority 
shall nullify its energy efficiency registration , provided that the  prod uct 
dealer fails to conduct the energy efficiency tes t due to the fact that the 
designated sampling and testing products are no longer produced or 
imported , and the Central  Competent  Authority has approved and 
cancel ed its energy efficiency registration.   
The Central  Competent  Authority shall disclose  the information  under 
the preceding paragraph on the Management System pursuant to the 
Consumer Protection Act  and the relevant regulations .   
 11.The volume of the first sampling and testing products in Secti on 9 shall 
be determined based on the total ity of the product s sold in the pre ceding  6 
 year: one sample shall be tested out of 200 units of end suction single 
stage own bearing rotodynamic water pumps, a maximum of 5 units for 
each dealer , while there are less than 200 units sold, one sample shall 
still be tested ; One sample shall be tested out of 2 00 units of end suction 
single stage close coupled  rotodynamic  water pumps , a maximum of 5 
units for each dealer , while there are  less than 2 00 units sold, one 
sample shall still be tested ; One sample shall be tested out of 100 units 
of end suction single stage close coupled inline  rotodynamic  water 
pumps , a maximum of 5 units for each dealer , while there are  less than 
100 units sold, one sample shall still be tested.   
The Central  Competent  Authority may adjust the sampling model or 
volume based on actual needs.  
 7 
 Appendix 1 
Applicable  Scope of End Suction Single Stage Rotodynamic  Water Pumps  
1.This standard applies to end suction single stage rotodynamic  water pumps  without motors and  water 
pumps units with motors , which have rated fre quency of 60Hz, rated power of 0.75 (1HP)  to 200kW  
(270HP), volume flow rate  of greater than or equal to 6m3/hr., head  of less than or equal to 140m , 
and driven by a three -phase motor with nominal speed  of 3600rpm (2 poles) or 1800rpm (4 poles), 
including:  
(1) End S uction S ingle S tage O wn B earing rotodynamic  water pumps (ESOB  water pumps ): 
An end suction single stage rotodynamic water pump in which l iquid enters the pump in a direction 
parallel to the impeller shaft and is discharged through a volute in a plane perpendicular to the 
shaft , the driving motor component remains dry, a sealed shaft connection b etween the impeller 
in the pump body and the motor , and is equipped with own bearings.  
(2)End S uction S ingle S tage C lose C oupled rotodynamic  water pumps  (ESCC  water pumps ): 
An end suction single stage rotodynamic  water pump  in which liquid enters the pump in a direction 
parallel to the impeller shaft and is discharged through a volute in a plane perpendicular to the 
shaft , the driving motor component remains dry, a sealed shaft connection between the impeller 
in the pump body and the motor, and the mot or shaft is extended as the pump shaft.  
(3) End Suction Single Stage Close Coupled Inline rotodynamic  water pumps  (ESCCi   water 
pumps ): 
An e nd suction single stage rotodynamic  water pump  in which liquid enters  and is discharged 
through a volute in a plane perpendicular to the shaft, the driving motor component remains dry 
and the motor is mounted on the top, a  sealed shaft connection between  the impeller in the pump 
body and the motor , the motor shaft is extended as the pump shaft , and the water inlet  and outlet  
of the pump is on the same axis .  
2. Excluded Items : 
(1) water pumps designed specifically for pumping clean water at temperatures below – 10 °C or 
above 120 °C;  
(2) water pumps designed only for f ire-fighting applications , and the overall unit ( including pump 
body, motor and other ancillary facilities ) has obtained the fire fighting  pump certification of the 
Competent  Authority . 
(3) displacement water pumps: means a water pump that moves clean water by enclosing a volume 
of clean water and forcing this volume  of water to the outlet of the pump  8 
 (4) self -priming water pumps : means a water pump that moves clean water which can start and/or 
operate when only partly filled with water;  
(5) axial flow pump or mixed flow pump which liquid is discharged through a volute in a plane non -
perpendicular to the  impeller shaft  
 9 
 Appendix 2  
Minimum Energy Performance Standard Requirements for  Rotodynamic  Water 
Pumps  
 
1.The energy efficiency  standard for  Water Pumps  without motors (  “bare pump” ) shall be calculated 
according to the following formulas:  
𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵  =88.59 𝑥𝑥 +13.46 𝑦𝑦−11.48  𝑥𝑥2−0.85 𝑦𝑦2−0.38 𝑥𝑥𝑦𝑦−𝐶𝐶     (a ) 
𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝑃𝑃   = 0.947 ×  𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵                                                    (b)                              
𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝑂𝑂𝑃𝑃  = 0.985 ×  𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵                                        (c) 
𝑥𝑥 = ln (𝑛𝑛𝑠𝑠) , 𝑦𝑦 = ln (Q100% ) , Q 100%：volume flow rate of the water pump at best efficiency 
point (m3/h) 
𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵：energy efficiency standard of the water pump at best efficiency point  (%); 
𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝑃𝑃：energy efficiency standard for the operating point of the water pump at 75 % of the flow 
at best efficiency point  (%);  
𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝑂𝑂𝑃𝑃：energy efficiency standard  for the operating point of the water pump at 110 % of the 
flow at best efficiency point (%);  
ns：specific speed of pump ( min-1 ), 𝑛𝑛𝑠𝑠=𝑛𝑛∙�Q "100%
(1
𝑖𝑖H100% )3/4 , n: the revolutions per minute of the 
shaft (rpm);  
Q"100%：volume flow rate of the water pump at best efficiency point (m3/s); 
H100%：head  of the water pump at  best efficiency point  (m); \ 
𝑖𝑖：the number of series impellers in the water pump  
C : a constant of  efficiency for different pump types.  
Type  C value  
end suction single stage own 
bearing rotodynamic  water 
pumps  motor  (3600rpm)  128.07  
motor (1800rpm)  130.27  
end suction single stage 
close coupled rotodynamic  
water pumps  motor  (3600rpm)  128.46  
motor  (1800rpm)  130.77  
end suction single stage close coupled inline rotodynamic  water pumps   motor (3600rpm)  132.30  
motor  (1800rpm)  133.69  
Note:( 1)Formula (a), (b), (c) apply to Water Pumps  with  full impeller diameter.  
(2) Best efficiency point means the operating point of water pump s at which 
it is at the maximum hydraulic pump efficiency measured with clean cold 
water.  10 
 (3)The measured energy efficiency value of bare pumps shall not be lower  
than 𝜂𝜂 𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵，𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝑃𝑃 ，𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝑂𝑂𝑃𝑃 as calculated by formula  (a), (b), (c), 
and shall be higher  than or equal to the rated values of product.  
(4)The measured energy efficiency value of bare  pumps  shall be calculated to 
the first place of decimal fraction and rounded up after decimal fraction.  
(5) The volume flow rate (Q), head (H) and motor power input  (P) shall be 
translated to  the value on  the basis of the nominal speed 3600rpm(2pole) or 
1800rpm(4poles). The conversion equations are as follow:  
𝑄𝑄𝑖𝑖,𝑛𝑛𝑛𝑛𝑝𝑝𝑖𝑖𝑛𝑛𝑛𝑛 𝑠𝑠𝑝𝑝𝑠𝑠𝑠𝑠𝑠𝑠=𝑄𝑄𝑖𝑖(𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑖𝑖𝑛𝑛𝑛𝑛𝑛𝑛  𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠
𝑛𝑛𝑖𝑖) 
 
𝑃𝑃𝑖𝑖,𝑛𝑛𝑛𝑛𝑝𝑝𝑖𝑖𝑛𝑛𝑛𝑛 𝑠𝑠𝑝𝑝𝑠𝑠𝑠𝑠𝑠𝑠=𝑃𝑃𝑖𝑖(𝑛𝑛𝑛𝑛𝑛𝑛𝑝𝑝𝑖𝑖𝑛𝑛𝑛𝑛𝑛𝑛 𝑠𝑠𝑝𝑝𝑠𝑠𝑠𝑠𝑠𝑠
𝑛𝑛𝑖𝑖)3 
(6) The equations for  measured energy efficiency value of bare  pumps  is: 
𝜂𝜂over  efficiency ,𝑖𝑖=hydraulic  output  power   (Pℎ,𝑖𝑖)
motor  power  input(P 1,𝑖𝑖)×100%   
𝜂𝜂over  efficiency ,𝑖𝑖=hydraulic  output  power  (Pℎ,𝑖𝑖)
power  transmitted  to the pump  by its motor  (P2,𝑖𝑖)×100%   
        =hydraulic  output  power  (Pℎ,𝑖𝑖)
motor  power  input�𝐵𝐵1,𝑖𝑖�×motor  efficiency (𝜂𝜂𝑛𝑛𝑛𝑛𝑚𝑚𝑛𝑛𝑚𝑚,𝑖𝑖)×100%  
        =𝜂𝜂overall  efficiency ,𝑖𝑖 (%)
 motor  efficiency (𝜂𝜂𝑛𝑛𝑛𝑛𝑚𝑚𝑛𝑛𝑚𝑚,𝑖𝑖)×100%  
𝑃𝑃ℎ,𝑖𝑖=𝜌𝜌𝑔𝑔 𝑄𝑄𝑖𝑖 𝐻𝐻𝑖𝑖 (kW)  
Where:  
𝑖𝑖: load point corresponding to 75%, 100%, and 110% of BEP  (best efficiency point)  flow  
𝑛𝑛𝑖𝑖: speed at 75%, 100%, and 110% of BEP flow  
𝑛𝑛𝑛𝑛𝑛𝑛𝑝𝑝𝑖𝑖𝑛𝑛𝑛𝑛𝑛𝑛 𝑠𝑠𝑝𝑝𝑠𝑠𝑠𝑠𝑠𝑠: 3600rpm or 1800rpm  
𝑄𝑄𝑖𝑖、𝐻𝐻𝑖𝑖、𝑃𝑃𝑖𝑖: the measured volume flow  rate ( m3/s), head  (m), and motor power input  
(kW) at load point i of the tested pump  
𝑃𝑃ℎ,𝑖𝑖: the measured hydraulic output power at load point i of the tested pump 
(kW)  
𝑃𝑃1,𝑖𝑖: the measured motor power input  at load point i of the tested pump (kW)  
𝑃𝑃2,𝑖𝑖: the measured power transmitted to the pump by its motor at load point i of the tested 
pump (kW)  
𝜂𝜂𝑝𝑝𝑛𝑛𝑚𝑚𝑛𝑛𝑚𝑚,𝑖𝑖: motor efficiency  at load point i (%) 
𝜌𝜌: density of water  delivered by pump (kg/m3) 
𝑔𝑔: local acceleration due to gravity (m/sec2) calculated according to the equations under 
CNS16017 or ISO 9906  𝐻𝐻𝑖𝑖,𝑛𝑛𝑛𝑛𝑝𝑝𝑖𝑖𝑛𝑛𝑛𝑛 𝑠𝑠𝑝𝑝𝑠𝑠𝑠𝑠𝑠𝑠=𝐻𝐻𝑖𝑖(𝑛𝑛𝑛𝑛𝑛𝑛𝑝𝑝𝑖𝑖𝑛𝑛𝑛𝑛𝑛𝑛 𝑠𝑠𝑝𝑝𝑠𝑠𝑠𝑠𝑠𝑠
𝑛𝑛𝑖𝑖)2 11 
 (7) When the approval for serial models is applied for Water Pumps , the energy 
efficiency standard of the bare pump with  minimum trimmed impeller at 
best efficiency point  𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵 ,𝑚𝑚𝑚𝑚𝑖𝑖𝑝𝑝𝑝𝑝𝑠𝑠𝑠𝑠  shall not be less than 90% of energy 
efficiency  standard of the maximum (full) impeller at best efficiency point  
𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵. The measured energy efficiency values of the bare pump with 
trimmed impeller shall not be lower than the energy efficiency  standard , 
𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵 ,𝑚𝑚𝑚𝑚𝑖𝑖𝑝𝑝𝑝𝑝𝑠𝑠𝑠𝑠  , and shall be higher  than or equal to the product rated value , 
the related information including efficiency of maximum (full) impeller  
and minimum trimmed impeller shall both be registered .  
(8) When the approval for serial models is applied for Water Pumps , the 
measured energy efficiency values at best efficiency point of all impeller 
diameter between minimum trimmed impeller and maximum (full) impeller 
shall be not lower than  the energy efficiency  standard of minimum trimmed 
impeller diameter at best efficiency point ,  𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵 ,𝑚𝑚𝑚𝑚𝑖𝑖𝑝𝑝𝑝𝑝𝑠𝑠𝑠𝑠 , and shall be 
higher  than or equal to the product rated value. 
(9) Test requirements: 
I. The test shall be conducted with at least  seven flow points , the flow points shall be 
selected at  40%, 60% , 75% , 90%, 100% , 110% , and 120 % of the expected Best 
Efficiency Point (BEP ) flow rate of the pump. For pumps that cannot be tested to flows 
beyond 120% of the expected BEP, the test shall be conducted at the flow points of  
40%, 50% , 60% ,70% , 80%, 90%  and 100%  of the expected BEP flow rate.  
II. The curve of best fit of efficiency versus rate of flow for the 
determination of BEP shall be a polynomial up to 6th order function in 
the region of the BEP rate of flow and with the maximum R2 value, 
indicating the value of best fit.  The curve of best fit of  the pump total 
head versus flow rate shall be a polynomial up to the 6th order function 
and with the maximum R2 value, indicating the best fit.  
III. The head and motor input power at 75%, 100%, and 110% of the BEP 
flow rate  shall be determined  according to regression analysis.  
 
2. The energy efficiency index EEI for Water Pumps units (with motors ) shall be calculated according 
to the following formulas: 
(1) energy  efficiency  standard of the Water Pumps with the maximum (full) impeller 
at best efficiency poin t,  𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵, or the energy efficiency  standard of  Water 
Pumps  with minimum trimmed impeller at best efficiency point,  𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵 ,𝑚𝑚𝑚𝑚𝑖𝑖𝑝𝑝𝑝𝑝𝑠𝑠𝑠𝑠 , 
shall be calculated  according to formulas i n the preceding paragraph. 
(2) The r eference motor power input , 𝑃𝑃1,𝑚𝑚𝑠𝑠𝑟𝑟, shall be calculated:  
𝑃𝑃1,𝑚𝑚𝑠𝑠𝑟𝑟=𝑃𝑃2,𝑚𝑚𝑠𝑠𝑟𝑟
𝜂𝜂𝑝𝑝𝑛𝑛𝑚𝑚𝑛𝑛𝑚𝑚,𝑚𝑚𝑠𝑠𝑟𝑟 
 12 
 𝑃𝑃2,𝑚𝑚𝑠𝑠𝑟𝑟=𝑃𝑃ℎ,𝑚𝑚𝑠𝑠𝑟𝑟
𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵  or 𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵 ,𝑚𝑚𝑚𝑚𝑖𝑖𝑝𝑝𝑝𝑝𝑠𝑠𝑠𝑠 
 
𝑃𝑃ℎ,𝑚𝑚𝑠𝑠𝑟𝑟=𝜌𝜌𝑔𝑔𝐻𝐻100% (𝑄𝑄100% /3600)
1000 
𝑃𝑃1,𝑚𝑚𝑠𝑠𝑟𝑟：reference motor power input of the maximum (full) impeller  or minimum 
trimmed impeller  (kW)  
𝑃𝑃2,𝑚𝑚𝑠𝑠𝑟𝑟 ：reference power transmitted to the pump by its motor of the maximum (full) impeller  or 
minimum trimmed impeller (kW)  
 𝑃𝑃ℎ,𝑚𝑚𝑠𝑠𝑟𝑟 ：reference hydraulic output power of the maximum (full) impeller or minimum trimmed 
impeller (kW)  
𝜂𝜂𝑝𝑝𝑛𝑛𝑚𝑚𝑛𝑛𝑚𝑚,𝑚𝑚𝑠𝑠𝑟𝑟：full load efficiency of three phase induced motor equipped for the maximum (full) 
impeller or minimum trimmed impeller of  Water Pumps  (%)，if the motors apply to 
IE3 regulation shall be meet . 
𝑄𝑄100% , 𝐻𝐻100%  ：volume flow  rate(m3/s), head(m) of the maximum (full) impeller or minimum 
trimmed impeller  
𝜌𝜌= the density of water is 1000 kg/m3 for calculat ing 𝑃𝑃ℎ,𝑚𝑚𝑠𝑠𝑟𝑟 
𝑔𝑔= acceleration due to gravity is 9.81m /s2 for calculating  𝑃𝑃ℎ,𝑚𝑚𝑠𝑠𝑟𝑟 
𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵： energy efficiency  standard of the maximum (full) impeller at best efficiency point 
(%) 
𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵 ,𝑚𝑚𝑚𝑚𝑖𝑖𝑝𝑝𝑝𝑝𝑠𝑠𝑠𝑠： energy efficiency  standard of the minimum trimmed impeller at best 
efficiency point (%)  is 0.9×𝜂𝜂𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ,𝐵𝐵𝐵𝐵𝐵𝐵   
(3) Energy efficiency index EEI for Water Pumps units (with motors) shall be calculated : 
I. The weighted average motor power input  𝑃𝑃1,𝑛𝑛𝑎𝑎𝑎𝑎 shall be calculated as:  
𝑃𝑃1,𝑛𝑛𝑎𝑎𝑎𝑎=�(∆𝑡𝑡
100)𝑖𝑖3
𝑖𝑖=1𝑃𝑃1,𝑖𝑖 
 𝑖𝑖 : load point corresponding to 75%, 100%, and 110% of BEP flow of  maximum (full) 
impeller or minimum trimmed impeller  
𝑃𝑃1,𝑖𝑖 : the measured motor power input of the maximum (full) impeller or 
minimum trimmed impeller at 75%, 100%, and 110% of BEP flow (kW)  
∆𝑚𝑚
100 : the reference flow -time profile, as    
Flow Q in % of 
Q100%  75% 100%  110%  
∆𝑡𝑡
100 25% 50% 25% 
 13 
 II. The energy efficiency index EEI shall be calculated as: 
EEI =𝑃𝑃1,𝑛𝑛𝑎𝑎𝑎𝑎𝑃𝑃1,𝑚𝑚𝑠𝑠𝑟𝑟⁄  
III. T he measured EEI shall not  be higher than  0.988 and the product rated value.  
IV. When the approval of serial models  is applied for Water Pumps , the EEI of all impeller 
diameters between maximum (full)  and minimum trimmed impeller diameter shall be not 
higher than the EEI of the maximum(full) impeller and the product rated value. The 
motor power must also be within the range of motor power of the maximum  (full)  impeller 
and minimum trimmed impeller. At the same time, the pump efficiency, EEI and related 
information for the maximum (full)  impeller and minimum trimmed impeller shall be 
registered.14 
 Appendix 3  
Permitted Energy Consumption Standard  Management System 
Account and Password Application Form  
Prepared on (ROC year,  month,  date)  
 
Applicant (Company):                                      
Applicant:             Tel:              Fax:                  
E-MAIL:                                               
 
Category of the Product:                                   
Account ID:                                               
Password:                                                
 
This company is applying for log- in a nd use of the Permitted Energy Consumption 
Standard Management System , and will be responsible for all information registered.  
Stamp  (seals of the company and the responsible person):  
 
 
 
 
 
             (official seals of the company and responsible person)  
 
    15 
 Appendix 4  
 
   
Energy Efficiency Performance Standard  Registration Application 
Form for the Water Pumps  
Prepared on (ROC year,  month,  date)  
1. Applicant ( Product Dealer) Information  
Company name:                                     
Company address:                                      
Responsible Person:          Business ID:                      
Contact:          Department:          Title:             
Tel:             Mobile:           Fax:               
Email:                                            
2. Manufacturer Name and Address  
  □ same as the Applicant  
Manufacturer name:                                    
Manufacturer address:                                   
3. Contents o f Registration  
 Application number:  16 
 No. Model 
No. Name  motor 
rated 
power 
(kW)  Motor 
type/  
Mode  
/pole  
 Rated 
voltage  
(V)/  
 Rated 
frequency(
Hz)  Inlet / 
outlet 
diameter 
of pump 
(mm)  Full impeller  (three load points)  Trimmed impeller  
Production 
country or 
region  Energy 
Efficiency 
Index  
(EEI) pump  
dimensions  diameter 
(mm)  Flow 
rate 
(m3/m
in) Head 
(m)  Bare 
pump 
efficiency 
(%)  speed  
at BEP  
(rpm) diameter 
(mm)   
Flow 
rate at 
BEP 
(m3/min
) Head 
at BEP   
(m) pump 
efficienc
y  
at BEP  
(%) speed  
at BEP  
(rpm) 
1.                     
2.                     
3.                     
Note: 1. Information of t rimmed impeller can be omitted if impeller is not trimmed;  
2. For serial models, information of the full impeller and minimum trimmed impeller shall be filled in.  
3. Three load points refer to volume flow, head and efficiency at 75%, 100%, 110% of the flow at the best efficiency point.  
4. Product Dealer shall log in the  Minimum Energy Performance Standard Management System to fill out the application form and 
download for further use.  
4. Application D eclaration and Affidavit 
This company hereby declares to the central competent authority that all information contained in this a pplication  is true , and this 
company will  be responsible for false, if any, and bear all legal liabilities . This company hereby declares that products a vailable 
on the markets shall have the same energy efficiency  labelling information as given in this application form. In case of any false, 
this company, without any objection, shall be subject to registration revocation and any disposition under the ener gy management 
regulations. 
Stamp  (Seals of company and responsible person )  
 
 
 
(official seals of company and responsible person  17 
 5. Power of Attorney (not applicable for applicants apply for registration by 
themselves)  
For those apply for registration through attorney(s), the attorney(s) shall be approved by 
the applicants. 
 
Company Name of the Attorney:  
Responsible Person:  
Address:  
Business ID:  
Tel:  
 
 
 
              
(official seals of company and responsible person)