This part of GB/T 18268 specifies requirements for immunity and emissions regarding electro- magnetic compatibility (EMC) for electrical equipment, operating from a supply or battery of less than 1 000 V a.c. or 1 500 V d.c. or from the circuit being measured, intended for professional, industrial-process, industrial-manufacturing and educational use, including equipment and computing devices for
C measurement and test;
C control;
C laboratory use;
C accessories intended for use with the above (such as sample handling equipment), intended to be used in industrial and non-industrial locations.
Computing devices and assemblies and similar equipment within the scope of Information Technology Equipment (ITE) and complying with applicable ITE EMC standards can be used in systems within the scope of this part of GB/T 18268 without additional testing, if it is suitable for the intended electromagnetic environment.
This product family standard takes precedence over generic standards. The following equipment is covered in this standard.
a) Electrical measurement and test equipment
This is equipment, which by electrical means measures, indicates or records one or more electrical or non-electrical quantities, also non-measuring equipment such as signal generators, measurement standards, power supplies and transducers.
b) Electrical control equipment
This is equipment, which controls one or more output quantities to specific values, with each value determined by manual settings, by local or remote programming, or by one or more input variables. This includes Industrial Process Measurement and Control (IPMC) equipment, which consists of devices such as:
C process controllers and regulators;
C programmable controllers;
C power supply units for equipment and systems (centralized or dedicated);
C analogue/digital indicators and recorders;
C process instrumentation;
C transducers, positioners, intelligent actuators, etc.
c) Electrical laboratory equipment
This is equipment which measures, indicates monitors or analyses substances, or is used to prepare materials, and includes In Vitro Diagnostic (IVD) equipment. This equipment may also be used in areas other than laboratories, for example self-test IVD equipment may be used in the home.
This standard is applicable to
C equipment for use in residential, commercial and light-industrial environments, according to IEC 61000-6-1;
C equipment for use in industrial locations;
C equipment for use in laboratories or test and measurement areas with a controlled electromagnetic environment;
C portable test and measurement equipment.
2 Normative References
The provisions of the following documents, through reference in this text, constitute the provisions of this standard. For dated reference, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition referred to apply.
GB/T 4365 Electrotechnical Terminology - Electromagnetic Compatibility (GB/T 4365—2003, IEC 60050-161:1990, IDT)
GB 4824-2004 Industrial, Scientific and Medical (ISM) Radio - Frequency Equipment Electromagnetic - Disturbance Characteristics - Limits and Methods Of Measurement (CISPR 11:2003, IDT)
GB 17625.1 Electromagnetic Compatibility—Limits—Limits For Harmonic Current Emissions(Equipment Input Current ≤16 A Per Phase) (GB 17625.1—2003, IEC 61000-3-2:2001, IDT)
GB 17625.2 Electromagnetic Compatibility (EMC) - Limits - Limitation Of Voltage Changes,Voltage Fluctuations and Flicker in Public Low-Voltage Supply Systems, for Equipment with Rated Current ≤16 A Per Phase and Not Subject to Conditional Connection (GB 17625.2—2007, IEC 61000—3—3:2005, IDT)
GB/T 17626.2 Electromagnetic Compatibility(EMC) - Testing and Measurement Techniques - Electrostatic Discharge Immunity Test (GB/T 17626.2—2006, IEC 61000-4-2:2001, IDT)
GB/T 17626.3 Electromagnetic Compatibility - Testing and Measurement Techniques - Radiated Radio-Frequency Electromagnetic Field Immunity Test (GB/T 17626.3—2006, IEC 61000-4-3:2002, IDT)
GB/T 17626.4 Electromagnetic Compatibility - Testing And Measurement Techniques - Electrical Fast Transient/Burst Immunity Test (GB/T 17626.4-2008, IEC 61000-4-4:2004, IDT)
GB/T 17626.5 Electromagnetic Compatibility - Testing And Measurement Techniques - Surge Immunity Test (GB/T 17626.5-2008, IEC 61000-4-5:2005, IDT)
GB/T 17626.6 Electromagnetic Compatibility - Testing And Measurement Techniques - Immunity to Conducted Disturbances Induced By Radio-Frequency Fields (GB/T 17626.6-2008, IEC 61000-4-6:2006, IDT)
GB/T 17626.8 Electromagnetic Compatibility(EMC) - Part 4-8: Testing And Measurement Techniques - Power Frequency Magnetic Field Immunity Test (GB/T 17626.8—2006, IEC 61000-4-8:2001, IDT)
GB/T 17626.11 Electromagnetic Compatibility - Testing And Measurement Techniques - Voltage Dips, Short Interruptions And Voltage Variations Immunity Tests (GB/T 17626.11—2008, IEC 61000-4-11:2004, IDT)
IEC 61000-6-1:2005 Electromagnetic Compatibility (EMC) C Part 6-1: Generic Standards C Immunity For Residential, Commercial And Light-Industrial Environments
IEC 61000-3-11:2000 Electromagnetic Compatibility (EMC) C Part 3-11: Limits C Limitation Of Voltage Changes, Voltage Fluctuations And Flicker In Public Low-Voltage Supply Systems - Equipment with Rated Current ≤ 75A And Subject To Conditional Connection
IEC 61000-3-12:2004 Electromagnetic Compatibility (EMC) C Part 3-12: Limits C Limits For Harmonic Currents Produced By Equipment Connected To Public Low Voltage Systems With Input Current > 16A and ≤ 75A per Phase
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 4365 as well as the following apply.
Other definitions, not included in GB/T 4365 and this standard, but nevertheless necessary for the application of the different tests, are given in the basic standards of EMC.
3.1
type test
conformity test made on one or more items representative of the production
[IEV 151-16-16]
3.2
port
any particular interface of the specific device or system with the external electromagnetic environment within the scope of this part of GB/T 18268 (see Figure 1 for an example of Equipment Under Test (EUT))
Note: I/O ports are input, output or bi-directional, measurement, control, or data ports.
GB/T 18268.1-2010 The following standards are cited：
