DIN EN IEC 61800-9-2:2025-08

This part of IEC 61800 specifies energy efficiency indicators of power electronics (complete drive modules (CDM), input or output sub drive modules (SDM)), power drive systems (PDS) and motor starters, all used for motor driven equipment. This document is a product standard for energy efficiency according to IEC Guide 119 and specifies the methodology for the determination of losses of the complete drive module (CDM), the sub drive module (SDM), the power drive system (PDS) and the motor system. It defines IE and IES classes, their limit values and provides test procedures for the classification of the overall losses of the motor system. Furthermore, this document proposes a methodology for the implementation of the best energy efficiency solution of drive systems. This depends on the architecture of the motor driven system, on the speed/torque profile and on the operating points over time of the driven load equipment. The methodology of the extended product approach and the semi-analytical models are specified in Part 1 of this IEC 61800-9-1 series of standards. The PDS requirements in this standard apply only to PDSs that are placed on the market as a single product; that is, a combination of a motor and a CDM that are not intended to be separately used. CDM requirements apply only to a CDM in which the contained SDMs have yet to be assessed in accordance with the SDM requirements. The following devices are excluded from the scope: - high-voltage CDMs, SDMs, and PDSs with a rated voltage exceeding 1,0 kV AC or 1,5 kV DC; - low-voltage CDMs, SDMs, and PDSs with a rated voltage less than 100 V AC; - high-power PDSs with a rated output exceeding 1 000 kW; - high-power CDMs and SDMs with a rated apparent output power exceeding 1 209 kVA; - low-power PDS with a rated output less than 0,12 kW; - low-power CDM and SDM with a rated output below 0,278 kVA; - PDS with gear motors in which the motor and gearbox cannot be separated, for example because of a common housing; - Servo PDS (consisting of a frequency converter, motor, and position feedback sensor); - CDM, BDM, and SDM designed exclusively for driving servomotors; - PDS, CDM, BDM, and SDM specifically designed for DC motor applications in accordance with IEC 61800-1; - PDS, in which multiple motors are connected in parallel to a single CDM with a three-phase output; - SDM with DC input and DC output. IEC 61800-9 does not address the classification of the energy efficiency of driven equipment, but does contain input parameters for assessment according to the extended product approach. The standard differs from DIN EN 61800-9-2 (VDE 0160-109-2):2018-01 as follows: a) additional IES Classes defined to IES5; b) removed reference motor loss data and now point to IEC 60034-30-2; c) expanded and modified factors in Clause 6 for CDMs; d) Annex C is now the Mathematical Model for CDM Losses; e) moved the mathematical model for the CDM to Annex C; f) added Sub Drive Input Module and Sub Drive Output Modules to Annex B; g) Annex D is now the Converter Topology (old Annex C); h) Annex E is now the Interpolation of Motor Losses (Old Annex D); i) Annex E expanded to include various motor connections and updated interpolation method; j) new Annex E for determination of Interpolation Coefficients; k) Annex F is the old Annex E; l) new Annex J Explanation of Correction Factors for the Reference Losses in Table 8. This part of IEC 61800 has been prepared in order to make it possible to evaluate losses in SDMs (sub drive modules), CDMs (complete drive modules), and PDSs (power drive systems).