| Standard ID | QC/T 789-2017 (QC/T789-2017) |
| Description (Translated English) | Technical requirements and bench test methods of automobile electric vortex retarder assembly |
| Sector / Industry | Automobile & Vehicle Industry Standard (Recommended) |
| Word Count Estimation | 24,238 |
| Date of Issue | 2017-01-09 |
| Date of Implementation | 2017-07-01 |
| Older Standard (superseded by this standard) | QC/T 789-2007 |
| Regulation (derived from) | Ministry of Industry and Information Technology Announcement No.2 of 2017 |
| Summary | This standard specifies the terms and definitions of automotive eddy current retarders and their controllers, test equipment, product classification, test related requirements, technical requirements, test methods. |