IEC 61000-4-16 pdf download.Electromagnetic compatibility (EMC) – Part 4-16: Testing and measurement techniques – Test for immunity to conducted, common mode disturbances in the frequency range 0 Hz to 150 kHz
1 Scope
This part of IEC 61 000 relates to the immunity requirements and test methods for electrical and electronic equipment to conducted, common mode disturbances in the range d.c. to 1 50 kHz. The object of this standard is to establish a common and reproducible basis for testing electrical and electronic equipment with the application of common mode disturbances to power supply, control, signal and communication ports. This standard defines • test voltage and current waveform; • range of test levels; • test equipment; • test set-up; • test procedures. For some types of ports, for example ports intended to be used with highly balanced lines, additional test provisions may be established by product committee specifications. The test is intended to demonstrate the immunity of electrical and electronic equipment when subjected to conducted, common mode disturbances such as those originating from power line currents and return leakage currents in the earthing/grounding system. The disturbances produced by 400 Hz mains systems are not included in the scope of this standard.Actual interference due to these disturbance phenomena is relatively rare, except in industrial plants. Product committees should therefore consider whether there is a justification for applying this standard in their product/product family standards (see also Clause 4). This test is not relevant for equipment ports intended to be connected to short cables, having a length less than 20 m or less. The immunity to harmonics and interharmonics, including mains signalling, on a.c. power ports (in differential mode) is not included in the scope of this standard and is covered by IEC 61 000-4-1 3 and IEC 61 000-4-1 9. The immunity to conducted disturbances generated by intentional radio-frequency transmitters is not included in the scope of this standard and is covered by IEC 61 000-4-6.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply. NOTE Not all of the definitions given in Clause 3 are included in IEC 60050-1 61 . 3.1 EUT equipment under test equipment (devices, appliances and systems) subjected to tests Note 1 to entry: This note applies to the French language only. 3.2 auxiliary equipment AE equipment that is necessary for setting up all functions and assessing the correct performance (operation) of the EUT during the test 3.3 port particular interface of the specified equipment with the external electromagnetic environment SEE: Figure 1. 3.4 coupling interaction between circuits, transferring energy from one circuit to another 3.5 coupling network electrical circuit for the purpose of transferring energy from one circuit to another 3.6 decoupling network electrical circuit for the purpose of preventing test voltage applied to the equipment under test from affecting other devices, equipment or systems which are not under test 3.7 immunity (to a disturbance) ability of a device, equipment or system to perform without degradation in the presence of an electromagnetic disturbance [SOURCE: IEC 60050-1 61 :1 990, 1 61 -01 -20] 3.8 source impedance of the test generator ratio between the open circuit voltage and the short circuit current, expressed as:
4 General
The conducted, common mode disturbances in the frequency range d.c. to 1 50 kHz may influence the reliable operation of equipment and systems installed in residential areas, industrial areas and electrical plants. Only those ports of an EUT which are likely to be subjected to the disturbances dealt with by this standard shall be considered for the application of its requirements. The disturbances are typically generated by • the power distribution system, with its fundamental frequency, significant harmonics and interharmonics; • power electronic equipment (e.g. power convertors), which may inject disturbances into the ground conductors and earthing system (through stray capacitance or filters), or generate disturbances in signal and control lines by induction. At the mains frequency and harmonics of the mains frequency, the disturbances are usually generated by the power distribution system (fault and leakage currents in the ground and earthing systems). At frequencies above the range of harmonics of the mains frequency (up to 1 50 kHz) the disturbances are usually generated by power electronic equipment, which is often found in industrial and electrical plants. The coupling of the source of disturbances with the power supply, signal, control and communication cables, transfer these disturbances to the ports of the equipment under test. Because the coupling mechanisms defined above cannot be completely eliminated, it is necessary for equipment to have adequate immunity to the disturbances. Depending on the type of installation, the disturbances may be classified as follows: a) voltage/current at power frequency: d.c., 1 6 2/3 Hz, 50 Hz and 60 Hz; b) voltage/current in the frequency range 15 Hz to 1 50 kHz (including the harmonics of the mains frequency). This standard defines the test procedures for both the categories of disturbance defined above. The applicability of the tests should be defined in the product standard. Annex A contains more information on the phenomena.
IEC 61000-4-16 pdf download
