The electromagnetic compatibility (EMC) immunity requirements specified in this part of GB/T 17799 are applicable to electrical and electronic equipment used in residential, commercial, and light industrial environments, covering О Immunity requirements for the frequency range of Hz to 400 GHz. Frequency bands that are not specified in this section do not require measurement. If there is no relevant specialized product or product class EMC immunity standard, this section of the general EMC immunity standard applies. This section applies to equipment directly connected to the low-voltage public power grid or dedicated DC power sources powered by the low-voltage public power grid. This section also applies to equipment that will be used in the following locations and powered by batteries or non public and non industrial low-voltage distribution systems. This section covers the indoor and outdoor environments of residential, commercial, and light industrial venues. The following is a description of the environment of certain places, including (but not limited to): residential areas, such as residential buildings, apartments, etc- Retail outlets, such as stores, supermarkets, etc.; - Commercial buildings, such as offices, banks, etc- Public entertainment areas, such as cinemas, public bars, dance halls, etc-- Outdoor places, such as gas stations, parking lots, amusement parks, and sports centers-- Light industrial sites, such as workshops, laboratories, maintenance centers, etc. Any place where low-voltage power supply is directly obtained through the public power grid belongs to residential, commercial, and light industrial environments. The purpose of this section is to specify the immunity test requirements for continuous and transient conducted and radiated disturbances, including electrostatic discharge, for equipment within the scope of application. This section specifies anti-interference requirements to ensure that equipment working in residential, commercial, and light industrial environments has sufficient anti-interference levels. But these immunity levels do not include some extreme situations that may occur with extremely low probability in any location. The suggested tests in this section do not include all disturbance phenomena, but only consider disturbance phenomena related to the equipment involved in this section. These test requirements represent the basic EMC immunity requirements. Note 1: Information on other disturbance phenomena can be found in IEC 61000-4- [1]. This section specifies test requirements for each port considered. Note 2: Safety considerations are not within the scope of this section. Note 3: In special cases, disturbance levels may exceed the test levels specified in this section. For example, handheld transmitters may be used near equipment. In these cases, special mitigation measures need to be taken
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