International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference prEN 50598-2:2013
Title Ecodesign for power drive systems, motor starters, power electronics and their driven applications - Part 2: Energy efficiency indicators for power drive systems and motor starters
Project Number 24603
Abstract/Scope This part of EN 50598 specifies the Energy Efficiency indicators for power drive systems, motor starters, power electronics (e.g. Complete Drive Modules, CDM) used in motor driven applications in the power range of 0,12 kW up to 1000 kW. This part of EN 50598 specifies the methodology for determination of losses of the complete motor system, the power drive system (PDS) and the CDM. It defines IE and IES-classes, their limit values and provides test procedures for the classification and the overall losses of the motor system. Furthermore, this part of EN 50598 proposes a methodology for characterization of the best energy efficiency solution to be implemented, depending on the motor driven system architecture, the speed/load profile and the duty profiles of the application. The structure of EN 50598 contains the following: • the losses of a standardized reference PDS (RPDS) and the mathematical model of their calculation are given; • requirements for determining the losses of a real PDS are given, and be classified in comparison to the RPDS; • requirements for the type testing and the content of user documentation; • some illustrations of losses in an overall system as an example are given in Annexes; • information about system and drive topologies are given in Annexes. Specific data on losses and IE/IES-classes are given for low voltage (100 V up and equal to 1 000 V) single axis AC/AC power drive systems with three phase induction motors. Geared motors shall be treated as standard motors. This part of EN 50598 does not specify the methodology for eco-design for environmental impact. This is defined in Part 3 of EN 50598.
Enquiry stage


Current Stage code 4060
Current Stage code date 2014-02-24
Current Stage code deadline 2014-03-17
Deadline date for vote  


Directive(s) ECOELM (640/2009), ERP (2009/125/EC)
Mandate(s) M/470; M/476; M/495
Order Voucher  


IEC Technical Body  
Reference Document  
Note 2013-03-18 - TC cancelled the text delivered on 2013-02-04 (revised text to be delivered) * Project 23551 split into 3 parts in order to provide answers to three European mandates (M/470, M/476 and M/495) (see PR = 24602 to 24604)
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
4060 2014-02-24 2014-03-17 export to doc file  EN
4020 2013-09-20 2014-02-21 export to doc file  EN  FR  DE
3099 2013-06-26    
1099 2012-11-23    

Implementation Dates

date of Ratification (DOR) (1)  
date of Availability (DAV) (2)  
date of Announcement (DOA) (3) -
date of Publication (DOP) (4) -
date of Withdrawal (DOW) (5) -


Superseded by  
Normative reference (6)  

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.