GB/T 18268.32-2022Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 32: Immunity requirements for safety-related systems and for equipment intended to perform safety-related functions (functional safety) - Industrial applications wi (English PDF)

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"

drafted.

This document is Part 32 of GB/T 18268 "Electromagnetic Compatibility Requirements for Electrical Equipment for Measurement, Control and Laboratory Use".

GB/T 18268 has released the following parts.

--- Part 1.General requirements;

--- Part 21.Test configuration and working conditions of sensitivity test and measurement equipment for special requirements without electromagnetic compatibility protection

and performance criteria;

--- Part 22.Particular requirements for portable test, measurement and monitoring equipment for low-voltage distribution systems, test configuration, operating conditions and

performance criteria;

--- Part 23.Special requirements Test configuration, operating conditions and performance criteria for transmitters with integrated or remote signal conditioning;

--- Part 24.Particular requirements for insulation monitoring devices in accordance with IEC 61557-8 and insulation fault determination in accordance with IEC 61557-9

Test configuration, working conditions and performance criteria of the bit equipment;

--- Part 25.Test configuration, working conditions and performance of field devices with special requirements interfaces complying with IEC 61784-1, CP3/2

able to judge;

--- Part 26.Particular requirements for in vitro diagnostic (IVD) medical devices;

--- Part 31.Immunity requirements for safety-related systems and equipment intended to perform safety-related functions (functional safety) for general industry

application;

--- Part 32.Immunity requirements for safety-related systems and equipment intended to perform safety-related functions (functional safety) specific electromagnetic

environment for industrial applications.

This document is identical to IEC 61326-3-2.2017 Electromagnetic Compatibility Requirements for Electrical Equipment for Measurement, Control and Laboratory Use No. 3-2

Part. Immunity requirements for safety-related systems and equipment intended to perform safety-related functions (functional safety) Industrial applications for a specific electromagnetic environment

use".

The following editorial changes have been made to this document.

--- In order to coordinate with existing standards, the standard name has been changed.

Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.

Introduction

GB/T 18268 (all parts) proposes electromagnetic compatibility requirements for electrical equipment for measurement, control and laboratory use. GB/T 18268 has

The published standard consists of 9 parts.

--- Part 1.General requirements. The purpose is to specify electromagnetic properties of electrical equipment for professional, industrial process, industrial manufacturing and educational use

Compatibility immunity and emission requirements, these electrical equipment is powered by less than AC 1000V or DC 1500V power supply or electrical

battery, or operate from the line under test, including equipment and computing devices used in industrial and non-industrial locations.

--- Part 21.Test configuration and working conditions of sensitivity test and measurement equipment for special requirements without electromagnetic compatibility protection

and performance criteria. The purpose is to specify in more detail the equipment with test and measurement circuits [internal and/or external circuits of the equipment]

Test configuration, operating conditions and performance criteria. As specified by the manufacturer, these devices are not intended to be used for operational and/or functional reasons.

Electromagnetic compatibility protection.

--- Part 22.Particular requirements for portable test, measurement and monitoring equipment for low-voltage distribution systems, test configuration, operating conditions and

performance criteria. The purpose is to specify in more detail the test, measurement or monitoring equipment for the protection of low-voltage distribution systems, consisting of batteries and

(or) Equipment powered by the circuit under test, test configuration, operating conditions and performance criteria for portable equipment.

--- Part 23.Special requirements Test configuration, operating conditions and performance criteria for transmitters with integrated or remote signal conditioning. target

The key is to specify in more detail the conversion function, which is characterized by the conversion of non-electrical energy into process-related energy, with the assistance of an auxiliary energy source.

Test configuration, operation of transmitters containing electrical signals and output signals at one or more ports, including measurement of electrochemical and biomass

Conditions and performance criteria.

--- Part 24.Particular requirements for insulation monitoring devices in accordance with IEC 61557-8 and insulation fault determination in accordance with IEC 61557-9

Test configuration, operating conditions and performance criteria for bit equipment. The purpose is to specify the insulation according to IEC 61557-8 in more detail

Test configuration, operating conditions and performance criteria for monitoring devices and insulation fault location equipment according to IEC 61557-9.

--- Part 25.Test configuration, working conditions and performance of field devices with special requirements interfaces complying with IEC 61784-1, CP3/2

able to judge. The purpose is to discuss the special requirements for the electromagnetic compatibility test of field devices whose interface conforms to IEC 61784-1, CP3/2.

--- Part 26.Special requirements for in vitro diagnostic (IVD) medical devices. The purpose is based on the characteristics of in vitro diagnostic medical equipment and

Electromagnetic environment, specifies the basic requirements for its electromagnetic compatibility immunity and emission.

--- Part 31.Immunity requirements for safety-related systems and equipment intended to perform safety-related functions (functional safety) for general industry

application. The purpose is to specify the expected performance of SIL1 to SIL3 in IEC 61508 in the electromagnetic environment of indoor and outdoor industrial sites

Immunity requirements for industrial systems and equipment for safety functions.

--- Part 32.Immunity requirements for safety-related systems and equipment intended to perform safety-related functions (functional safety)

Industrial applications in magnetic environments. The purpose is to specify the specific electromagnetic environment resulting from the use of mitigation measures in indoor and outdoor industrial sites

Immunity of systems and equipment for industrial applications intended to perform safety functions as specified in IEC 61508 SIL1 to SIL3

degree requirements.

Functional safety is part of the overall safety of the equipment under control (EUC) and EUC control systems that rely on electrical safety

the correct operation of the relevant system. To achieve this goal, all equipment components involved in safety-related systems performing safety functions can be

Work in the prescribed manner under relevant conditions.

GB/T 20438 is the basic safety standard for functional safety of electrical/electronic/programmable electronic safety-related systems. it specifies the implementation

All requirements for functional safety. Adequate electromagnetic disturbance immunity is one of the requirements.

In the concept of GB/T 20438, the consideration of application and the design of electrical and electronic safety-related systems are distinguished. "Overall Safety Requirements"

Specification (SSRS) specifies all relevant requirements for the intended application, as follows.

a) The definition of functional safety is based on a risk assessment of the intended application whose function is to reduce risk.

b) The appropriate Safety Integrity Level (SIL) for each safety function is based on the risk assessment of the intended application.

c) The environment (including electromagnetic environment) in which the system is expected to work is defined in accordance with the requirements of GB/T 20438.

The requirements for each safety function are specified in one or more System Safety Requirements Specifications (SSRS). Therefore, according to

GB/T 20438 requires that considering the immunity of electromagnetic phenomena, the electromagnetic environment and electromagnetic phenomena are first considered in SSRS.

Safety-related systems used to perform specified safety functions should meet SSRS, and their corresponding immunity levels should be based on the equipment department.

The requirements specification of the equipment itself; these conclusions should be issued in the equipment requirements specification. Regarding the electromagnetic environment, SSRS and equipment requirements regulations are to be established

An accurate assessment of the actual electromagnetic environment that the equipment may be exposed to throughout the foreseeable life cycle. Therefore, the immunity requirements of the equipment should be taken as

Depends on the characteristics of the electromagnetic environment in which the equipment is intended to be used.

Therefore, equipment manufacturers can use appropriate methods to demonstrate that their equipment meets equipment requirements specifications, while system integrators can demonstrate

Its system complies with the requirements of SSRS. They do not need to consider other aspects of the application, e.g. application risk related to failure of safety-related systems

risk. Its purpose is to make all equipment in the system comply with the special performance criteria for functional safety (such as the performance criterion DS)

The level specified by SSRS, regardless of the SIL level.

See Appendix A for a method on how to apply the IEC 61326-3 series of standards.

The general EMC standard is applicable to a given electromagnetic environment, as well as those that have not yet formulated a special series of product EMC standards/product EMC standards

product. However, for equipment within the scope of this document, the information provided in the general EMC standard is not sufficient. need to give more details

Information and specifications, such as specific test configurations, take into account functional earth ports or the type of electromagnetic environment associated with the equipment within the scope of this document.

difference.

Electrical equipment for measurement, control and laboratory use

Electromagnetic Compatibility Requirements Part 32.

Safety-related systems and expected execution safety

Related functions (functional safety) of equipment

Industrial applications where immunity is required for a specific electromagnetic environment

1 Scope

This document covers all equipment within the scope of IEC 61326-1, however its scope is limited to the specific electromagnetic environment and IEC 61508

Industrial systems and equipment intended to perform safety functions specified in SIL1 to SIL3.

The electromagnetic environment covered by this series of product standards refers to indoor and outdoor industrial sites, and according to the requirements of the processing industry, especially chemical

For industrial/petrochemical/pharmaceutical manufacturing plants, use the mitigation measures given in Appendix C. The electromagnetic environment and general industrial environment covered by this document

(See GB/T 18268.31-2022) The difference is to implement mitigation measures for electromagnetic phenomena, so as to obtain specific

Electromagnetic environment.

The specific electromagnetic environment for industrial use has the following representative characteristics.

--- restricted access to industrial areas;

--- Restricted use of mobile transmitters;

--- Special cables for power, control, signal and communication;

--- Isolation between power, control, signal and communication cables;

--- Factory buildings mainly constructed of metal frames;

--- Take appropriate measures for overvoltage/lightning protection;

--- Pipe heating systems driven by AC power;

--- No high-voltage substations near sensitive areas;

--- There are low-power devices using ISM frequencies according to CISPR11;

--- competent personnel;

--- Periodic maintenance of equipment and systems;

--- Assembly and installation guidelines for equipment and systems.

Equipment and systems certified or previously used according to IEC 61508 or IEC 61511 are outside the scope of this document.

Fire alarm systems and security alarm systems protecting buildings are outside the scope of this document.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations

documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to

this document.

GB/T 17626.2-2018 Electromagnetic Compatibility Test and Measurement Technology Electrostatic Discharge Immunity Test (IEC 61000-4-2.

2008, IDT)

GB/T 17626.3-2016 Electromagnetic compatibility test and measurement technology Radio frequency electromagnetic field radiation immunity test (IEC 61000-4-

3.2010, IDT)

GB/T 17626.4-2018 Electromagnetic Compatibility Test and Measurement Technology Electrical Fast Transient Burst Immunity Test (IEC 61000-