GB 12668.3-2003
Adjustable speed electrical power dive systems Part 3: EMC product standard including specific test methods (English Version)

Standard No.

GB 12668.3-2003

Language

Chinese, Available in English version

Release Date

2003

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2013-12

Replace By

GB 12668.3-2012

GB/T 12668.3-2012

Latest

GB 12668.3-2012

GB/T 12668.3-2012

Scope

This Part specifies the Electromagnetic Compatibility (EMC) requirements for electrical drive systems (hereinafter referred to as PDS). The electrical drive system here includes speed-adjustable AC motor drive and DC motor drive. The above-mentioned requirements refer to the case where the PDS is connected to the rated voltage of the power supply with an effective value below 1000 V AC, and the electromagnetic compatibility of the effective value of the power supply voltage higher than 1000 V AC is under development. Before a new publication is published, the requirements for electromagnetic compatibility will be generated by agreement between the manufacturer/supplier and the user. The PDSs referred to in this section refer to those installed in industrial environments and domestic environments, but traction applications and electric vehicles are not included. PDS can be connected to industrial or public distribution grids. The industrial grid is powered by a dedicated distribution transformer, which is usually located in or near the industrial area and only supplies power to industrial users. In addition, the PDS can be directly connected to the low-voltage public grid, which also supplies domestic power, in which case the neutral wire is usually grounded. The PDS involved in this section is often included in a larger system. The content of the system is not covered in this section, but guidance is provided in the reference appendix. It is required to ensure sufficient electromagnetic compatibility (EMC) level of PDS in industrial and public places. However, it is impossible for the required level to cover the extremely few possible extreme cases, without taking into account the change of PDS electromagnetic compatibility performance due to fault conditions. The purpose of this section is to determine the limits and test methods for PDS. This section includes requirements for immunity to interference and requirements for protection against electromagnetic emissions. Electromagnetic emissions may cause interference to other electronic equipment such as radio receivers, measuring and computing equipment. Immunity is required to protect equipment from continuous and momentary conductive and radiated (including electrostatic discharge) disturbances. Considering economic reasons, a compromise should be made according to the actual environment of the PDS between emission requirements and immunity requirements. This section defines the minimum requirements for PDS electromagnetic compatibility. This standard does not specify all safety requirements for equipment, such as protection against electric shock, insulation coordination and related insulation tests, unsafe operation or unsafe effects of failure. In some special cases, when extremely sensitive equipment is used nearby, additional mitigation measures must be taken: reduce electromagnetic emissions below specified values or increase the immunity of sensitive equipment. This EMC standard for PDS products takes precedence over other general standards and does not require or require additional EMC testing. If the PDS is used as a part of the equipment, and the equipment is included in another product EMC standard, the EMC standard of the whole set of equipment shall be adopted.

GB 12668.3-2003 history

• 2012 GB 12668.3-2012 Adjustable speed electrical power drive systems.Part 3:EMC requirements and specific test methods
• 2003 GB 12668.3-2003 Adjustable speed electrical power dive systems Part 3: EMC product standard including specific test methods

GB 12668.3-2003 -All Parts