Standard No.:	GB/T 12668.2-2025
English Name:	Adjustable speed electrical power drive systems—Part 2: General requirements—Rating specifications for adjustable speed AC power drive systems
Chinese Name:	调速电气传动系统 第2部分：一般要求 交流调速电气传动系统额定值的规定
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR;SAC
Issued on:	2025-12-31
Implemented on:	2027-1-1
Status:	to be valid
Superseding:	GB/T 12668.2-2002 Adjustable speed electrical power drive systems - Part 2: General requirements - Rating specifications for low voltage adjustable frequency a.c. power drive systems GB/T 12668.4-2006 Adjustable speed electrical power drive systems—Part 4:General requirements—Rating specifications for a.c.power drive systems above 1 000 V a.c. not exceeding 35 kV
Target Language:	English
File Format:	PDF
Word Count:	50500 words
Translation Price(USD):	1515.0
Delivery:	via email in 1~5 business day

GB/T 12668.2-2025 Adjustable speed electrical power drive systems—Part 2: General requirements—Rating specifications for adjustable speed AC power drive systems English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing thorugh draft translation, self-check, revision and varification) will be delivered upon being ordered. Adjustable speed electrical power drive systems — Part 2: General requirements — Rating specifications for adjustable speed AC power drive systems 1 Scope This document applies to adjustable speed AC electrical power drive systems, which include semiconductor power conversion and its control, protection, monitoring, measurement, and AC motors. This document applies to adjustable speed AC electrical power drive systems supplied to AC motors. Among them, basic drive modules (BDM) / complete drive modules (CDM) are connected to AC supply voltages (line-to-line voltage) up to 35 kV, 50 Hz or 60 Hz, and/or connected to DC supply voltages up to 1.5 kV. NOTE: GB/T 12668.1 covers adjustable speed DC electrical power drive systems supplied to DC motors. This document specifies and describes a non-exhaustive list of criteria for selecting the performance and functional attributes of basic drive modules / complete drive modules / electrical power drive systems. This list is reviewed by stakeholders to determine design considerations for devices, equipment, or systems with relevant test specifications. This document also provides selection of performance and functional attributes for drive equipment and extended products. Performance and functional attributes mainly include the following categories: — Topology of main components of electrical power drive systems and classification of electrical power drive systems; — Ratings, performance and functions; — Environmental specifications for intended installation and operation of electrical power drive systems; — Other specifications that may apply when specifying the overall electrical power drive system. Traction products and electric vehicles are not within the scope of this document. This document provides a non-exhaustive list. Depending on the application requirements, this list can be used to develop minimum requirement specifications between customers and manufacturers. Manufacturers can use this list to determine the minimum requirements for commercialized basic drive modules / complete drive modules / electrical power drive systems based on the application conditions of the basic drive modules / complete drive modules / electrical power drive systems without interaction with the customer. For certain aspects covered by specific electrical power drive system product standards in GB/T 12668, this document briefly introduces and refers to the detailed requirements in these product standards. GB/T 12668 applies to the following aspects: — GB/T 12668.3 covers electromagnetic compatibility requirements; — GB/T 12668.501 covers general safety requirements; — GB/T 12668.502 covers functional safety requirements; — GB/T 12668.6 covers guidelines for load duty types; — GB/T 12668.701, GB/T 12668.7201, GB/T 12668.7202, GB/T 12668.7301 and GB/T 12668.7302 cover requirements for interface and usage specifications; — GB/T 12668.8 covers specifications for power interface voltage; — GB/T 12668.901 and GB/T 12668.902 cover eco-design energy efficiency requirements for drive systems. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 2423.5—2019 Environmental testing — Part 2: Test methods — Test Ea and guidance: Shock (IEC 60068-2-27:2008, IDT) GB/T 2900.93—2015 Electrotechnical terminology — Electrophysics (IEC 60050-113:2011, IDT) GB/T 4798.1—2019 Classification of environmental conditions — Part 1: Storage (IEC 60721-3-1:2018, IDT) GB/T 4798.2—2021 Classification of environmental conditions — Part 2: Transportation and handling (IEC 60721-3-2:2018, IDT) GB/T 4798.3—2023 Classification of environmental conditions — Part 3: Stationary use at weatherprotected locations (IEC 60721-3-3:2019, IDT) GB/T 4798.4—2023 Classification of environmental conditions — Part 4: Stationary use at non-weatherprotected locations (IEC 60721-3-4:2019, IDT) GB/T 39275—2020 Power electronic systems and equipment — Operating conditions and characteristics of active infeed converter (AIC) applications (IEC 62578:2015, IDT) IEC 60034 (all parts) Rotating electrical machines IEC 60038 IEC standard voltages IEC 60050-112 International Electrotechnical Vocabulary (IEV) — Part 112: Quantities and units IEC 60050-114 IEV — Part 114: Electrochemistry IEC 60050-151 IEV — Part 151: Electrical and magnetic devices IEC 60050-161 IEV — Part 161: Electromagnetic compatibility IEC 60050-192 IEV — Part 192: Dependability IEC 60050-441 IEV — Part 441: Switchgear, controlgear and fuses IEC 60050-442 IEV — Part 442: Electrical accessories IEC 60050-551 IEV — Part 551: Power electronics IEC 60050-601 IEV — Part 601: Generation, transmission and distribution of electricity — General IEC 60068 (all parts) Environmental testing IEC 60076 (all parts) Power transformers IEC 60076-11 Power transformers — Part 11: Dry-type transformers IEC 60079 (all parts) Explosive atmospheres IEC 60146-1-1 Semiconductor converters — Part 1-1: Specification of basic requirements IEC TR 60146-1-2 Semiconductor converters — Part 1-2: Application guide IEC 60721-3-0 Classification of environmental conditions — Part 3: Introduction IEC 61800-3 Adjustable speed electrical power drive systems — Part 3: EMC requirements and specific test methods IEC 61800-5-1 Adjustable speed electrical power drive systems — Part 5-1: Safety requirements — Electrical, thermal and energy IEC 61800-5-2 Adjustable speed electrical power drive systems — Part 5-2: Safety requirements — Functional IEC TR 61800-6 Adjustable speed electrical power drive systems — Part 6: Guide for determination of types of load duty and corresponding current ratings IEC 61800-7 (all parts) Adjustable speed electrical power drive systems — Part 7: Generic interface and use of profiles for power drive systems IEC 61800-7-1 Adjustable speed electrical power drive systems — Part 7-1: Generic interface and use of profiles for power drive systems — Interface definition IEC TS 61800-8 Adjustable speed electrical power drive systems — Part 8: Specification of voltage on the power interface IEC 61800-9-1 Adjustable speed electrical power drive systems — Part 9-1: Ecodesign for power drive systems, motor starters, power electronics and their driven applications — General requirements for setting energy efficiency standards for power driven equipment using the extended product approach (EPA) and semi-analytical model (SAM) IEC 61800-9-2 Adjustable speed electrical power drive systems — Part 9-2: Ecodesign for power drive systems, motor starters, power electronics and their driven applications — Energy efficiency indicators for power drive systems and motor starters. 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-112, GB/T 2900.93—2015, IEC 60050-114, IEC 60050-151, IEC 60050-161, IEC 60050-192, IEC 60050-441, IEC 60050-442, IEC 60050-551, IEC 60050-601, IEC 60146-1-1 and IEC TR 60146-1-2 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: http://www.iso.org/obp — IEC Electropedia: http://www.electropedia.org/ Table 1 lists general terms. Table 2 lists input ratings for BDM/CDM/PDS. Table 3 lists output ratings for BDM/CDM/PDS. Table 4 lists motor speed and torque ratings. Table 1 — General terms Clause No. Term Clause No. Term Clause No. Term 3.1 acceptance test 3.2 mains supply 3.3 active infeed converter; AIC 3.4 basic drive module; BDM 3.5 commissioning test 3.6 complete drive module; CDM 3.7 converter 3.8 customer 3.10 DC link 3.12 efficiency (of CDM) 3.13 efficiency (of PDS) 3.14 end user 3.16 high-voltage BDM/CDM/PDS 3.27 equipment 3.28 integrated PDS 3.29 inverter 3.30 low-voltage BDM/CDM/PDS 3.31 manufacturer 3.36 motor 3.37 original equipment manufacturer; OEM 3.46 output overload capability 3.50 port 3.51 process measurement and control port 3.52 electrical power drive system; PDS 3.53 power factor (λ) 3.54 power interface 3.55 power port 3.56 product packaging 3.80 rectifier 3.81 regeneration 3.82 resolution 3.83 stakeholder 3.84 routine test 3.85 sample test 3.86 transport packaging 3.87 short-circuit ratio (Rsc) 3.88 signal port 3.89 special test 3.91 excitation 3.92 system integrator 3.94 total harmonic distortion; THD 3.96 type test 3.97 visual test NOTE: This document contains basic definitions used in GB/T 12668 (all parts). These definitions can be used in future revisions of all parts of GB/T 12668. Table 2 — Input ratings for BDM/CDM/PDS Clause No. Term Clause No. Term Clause No. Term 3.17 Input active power (BDM) (Pv) 3.18 Input active power (CDM/PDS) (PL) 3.19 Input apparent power (BDM) (Sv) 3.20 Input apparent power (CDM/PDS) (SL) 3.21 Input current (BDM) (Iv) 3.22 Input current (CDM/PDS) (IL) 3.23 Input frequency (BDM) (fv) 3.24 Input frequency (CDM/PDS) (fL) 3.25 Input voltage (BDM) (Uv) 3.26 Input voltage (CDM/PDS) (UL) 3.57 Rated input active power (BDM) (PvN) 3.58 Rated input active power (CDM/PDS) (PLN) 3.59 Rated input apparent power (BDM) (SvN) 3.60 Rated input apparent power (CDM/PDS) (SLN) 3.61 Rated input current (BDM) (IvN) 3.62 Rated input current (CDM/PDS) (ILN) 3.63 Rated input frequency (BDM) (fvN) 3.64 Rated input frequency (CDM/PDS) (fLN) 3.65 Rated input voltage (BDM) (UvN) 3.66 Rated input voltage (CDM/PDS) (ULN) NOTE: This document contains basic definitions used in GB/T 12668 (all parts). These definitions can be used in future revisions of all parts of GB/T 12668. Table 3 — Output ratings for BDM/CDM/PDS Clause No. Term Clause No. Term Clause No. Term 3.38 Output active power (BDM) (Pa) 3.39 Output active power (CDM/PDS) (PA) 3.40 Output apparent power (BDM) (Sa) 3.41 Output apparent power (CDM/PDS) (SA) 3.42 Output current (BDM) (Ia) 3.43 Output current (CDM/PDS) (IA) 3.44 Output frequency (BDM) (fa) 3.45 Output frequency (CDM/PDS) (fA) 3.46 Output overload capability 3.47 Output power (PDS) (Ps) 3.48 Output voltage (BDM) (Ua1) 3.49 Output voltage (CDM/PDS) (UA1) 3.67 Rated output active power (BDM) (PaN) 3.68 Rated output active power (CDM/PDS) (PAN) 3.69 Rated output apparent power (BDM) (SaN) 3.70 Rated output apparent power (CDM/PDS) (SAN) 3.71 Rated output current (BDM) (IaN) 3.72 Rated output current (CDM/PDS) (IAN) 3.73 Rated output frequency (BDM) (faN) 3.74 Rated output frequency (CDM/PDS) (fAN) 3.75 Rated output power (PDS) (PsN) 3.76 Rated output voltage (BDM) (UaN1) 3.77 Rated output voltage (CDM/PDS) (UAN1) NOTE: This document contains basic definitions used in GB/T 12668 (all parts). These definitions can be used in future revisions of all parts of GB/T 12668. Table 4 — Motor speed and torque ratings Clause No. Term Clause No. Term Clause No. Term 3.9 DC braking 3.11 dynamic braking 3.15 four quadrant operation 3.32 Maximum safe speed (of motor) (nSNmax) 3.33 Maximum rated speed (of motor) (nNmax) 3.34 Minimum rated speed (of motor) (nNmin) 3.35 Minimum speed (of motor) (nmin) 3.78 Rated speed (of motor) (nN) 3.79 Rated torque (of motor) (MN) 3.90 Speed (of motor) (n) 3.93 Torque (of motor) (M) 3.95 two quadrant operation NOTE: This document contains basic definitions used in GB/T 12668 (all parts). These definitions can be used in future revisions of all parts of GB/T 12668. 3.1 acceptance test contractual test to prove to the customer that the device meets certain specifications. [Source: GB/T 2900.83—2008, 151-16-23, modified] 3.2 mains supply low-voltage or high-voltage distribution system that supplies power to the basic drive module (BDM), complete drive module (CDM) or power drive system (PDS). Note: See Figure 3. 3.3 active infeed converter; AIC self-commutated power electronic converter that can bidirectionally convert active power and control reactive power or power factor. Note 1: An active infeed converter can be of any technology, topology, voltage and size, including current source DC-link or voltage source DC-link in generating and regenerating operating modes. Note 2: Some of them can also control harmonics to reduce the distortion of the applied voltage or current. Note 3: The basic topology can be implemented as a voltage source converter or a current source converter. Note 4: In IEC 60050-551, these terms (voltage source converter and current source converter) are defined as voltage-sourced a.c./d.c. converter [551-12-03] and current-sourced a.c./d.c. converter [551-12-04]. Most active infeed converters are bidirectional converters and are active on the d.c. side. Note 5: In some literature, the active infeed converter is also called an active front-end converter. [Source: GB/T 39275—2020, 3.5, modified] 3.4 basic drive module; BDM electronic power converter connected between the electric power supply and the motor, and its related control Note 1: See Figure 3. Note 2: The basic drive module can transfer power from the power supply to the motor, and can also transfer power from the motor to the power supply. Note 3: The basic drive module controls the input and output power of the motor, including some or all of the following aspects: current, frequency, voltage, speed, torque, force. 3.5 commissioning test test on a device or equipment on site to verify the correctness of the installation and operation [SOURCE: IEC 60050-411:1996, 411-53-06, modified] 3.6 complete drive module; CDM drive module consisting of the basic drive module (but not limited to) and equipment such as protection devices, transformers and auxiliary equipment, excluding the motor and sensors mechanically coupled to its shaft Note: See Figure 3. 3.7 converter device that converts the electrical energy provided by the mains supply into the form required by the motor by altering one or more of the following: such as voltage, current, and/or frequency Note 1: See Figure 3. Note 2: The converter includes an electronic commutation device and its associated commutation circuits. It is controlled by transistors or thyristors or any other power semiconductor switching devices. Note 3: The converter can be mains-commutated or self-commutated, for example, it can consist of one or more rectifiers. 3.8 customer original equipment manufacturer, system integrator or end user that specifies and purchases the basic drive module, complete drive module or power drive system from the basic drive module, complete drive module or power drive system manufacturer. Note: See Figure 1 3.9 DC braking process of converting the rotational energy of the load into electrical energy dissipated in the rotor by injecting direct current into the stator. 3.10 DC link power DC circuit connecting the input converter and the output converter of an indirect converter, consisting of capacitors and/or inductors to reduce DC voltage ripple or DC current ripple. Note: See Figure 3. 3.11 dynamic braking method used to convert the energy generated when the load controlled by the power drive system decelerates or stops. Note: Dynamic braking includes resistive braking, regenerative braking, etc. 3.12 efficiency ratio of the total electrical power at the power interface of the complete drive module motor terminals to the total electrical power at the mains supply port. Note 1: See feeder line in Figure 3. Note 2: Efficiency is usually expressed as a percentage. Note 3: IEC 61800-9-1 and IEC 61800-9-2 define power losses of complete drive modules and power drive systems. This document will be modified in the next edition to consider only power losses of basic drive modules / complete drive modules / power drive systems rather than efficiency. Usually, IEC 61800-9-1 and IEC 61800-9-2 are used to consider power losses of complete drive modules / power drive systems. Since the basic drive module is a part of the complete drive module, calculating the power losses of the basic drive module is also correct. 3.13 efficiency ratio of the mechanical power on the motor shaft to the total electrical power at the mains supply port. Note 1: See feeder line in Figure 3. Note 2: Efficiency is usually expressed as a percentage. Note 3: IEC 61800-9-1 and IEC 61800-9-2 define power losses of complete drive modules and power drive systems. This document will be modified in the next edition to consider only power losses of basic drive modules / complete drive modules / power drive systems rather than efficiency. IEC 61800-9-1 and IEC 61800-9-2 are used to consider power losses of complete drive modules / power drive systems. Since the basic drive module is a part of the complete drive module, calculating the power losses of the basic drive module is also correct. 3.14 end user entity that is ultimately responsible for the installation, operation and maintenance of the power drive system. Note: See Figure 1. 3.15 four-quadrant operation operating mode of a converter with the motor rotating in either direction, operating either as a motor or as a generator. Note: Four-quadrant operation relates to operation in quadrants Ⅰ, Ⅱ, Ⅲ and Ⅳ, as shown in Figure 2. 3.16 high-voltage BDM/CDM/PDS basic drive module, complete drive module or power drive system where the port voltage is higher than 1 kV AC (50 Hz or 60 Hz) or higher than 1.5 kV DC. Note 1: "Port" generally applies to both input and output; the scope of this document relates only to the voltage range of the input port. Note 2: See Table 5 for explanation. Note 3: For power drive systems with converter sections connected in series, the sum of the series input voltages is used as the equivalent input voltage of the converter section (see Annex A). Note 4: In the USA, the voltage range within the scope of this document is considered to be medium voltage. Table 5 — Basic classification of PDS by voltage Voltage rating of BDM/CDM Classification of PDS by voltage Input UvN / ULN Output UaN1 / UAN1 Low-voltage Low-voltage Low-voltage Low-voltage High-voltage High-voltage High-voltage Low-voltage High-voltage High-voltage High-voltage High-voltage 3.17 input active power

Foreword III Introduction V 1 Scope 2 Normative references 3 Terms and definitions 4 Guidance on BDM/CDM/PDS specifications and compliance methods 5 Performance and functional criteria 6 Tests 7 Information and marking requirements Annex A (Informative) Division of PDS into low-voltage and high-voltage systems Annex B (Informative) Determination of input current for BDM/CDM/PDS Annex C (Informative) List of national standardization documents having consistent corresponding relationship with all parts of IEC 60034 Annex D (Informative) List of national standardization documents having consistent corresponding relationship with all parts of IEC 61800-7 Bibliography