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GB/T 41911-2022Power frequency overvoltage protective devices (POPs) for household and similar applications (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

October 12, 2022

Implementation date

May 1, 2023

Scope

GB/T 41911-2022 (Power frequency overvoltage protective devices (POPs) for household and similar applications) is available as an English-translated PDF.

GB/T 41911-2022 is the Chinese standard "Power frequency overvoltage protective devices (POPs) for household and similar applications".

Its scope clause reads: This document specifies the classification, characteristics, signs and other product information, standard conditions for use and installation, requirements for structure and operation of POP requirements and test requirements.

This document applies to rated frequency 50Hz, 60Hz or 50/60Hz, rated voltage not exceeding AC 230V (phase and neutral), and and household and similar power frequency overvoltage protective devices (POP) with a rated current not exceeding 63A, which can be connected by the functional unit and the main protection circuit A device (MPD) combination or an independent electrical appliance with a disconnecting device that can break the protection circuit under specified conditions.

The main protective device is a circuit breaker, RCCB or RCBO. Note 1.The POP as a separate electrical appliance is not an automatic disconnecting protective appliance as specified in IEC 60364-4-41.

The POP is intended for use in environments with pollution degree 2 and overvoltage category III. Suitable for isolation.

It can be designed that the POP unit is assembled or embedded in the main protective device by the manufacturer, or the POP unit and the main protective device are mechanically installed on site Or electrically coupled, or as an independent electrical appliance that can break the protective circuit under specified conditions.

These appliances are designed to relieve phase and neutral in downstream equipment by disconnecting the protected circuit when an overvoltage is detected between phase and neutral. effects of power frequency overvoltages between neutrals (e.g. caused by a neutral fault in a three-phase supply upstream of a POP).

Note 2.In this document, "mitigating" means that POP will provide protection in most cases of power frequency overvoltage. If the phase-to-phase rated voltage of the phase-to-phase power system does not exceed 230V, a single-wire monitor conforming to this document may be used in accordance with the manufacturer's instructions.

Control POP. When all conductors can be broken, the POP specified in this document applies to IT systems. This document does not apply to protection against common mode overvoltages. This document does not apply to surge protective appliances.

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Document preview — GB/T 41911-2022

National Standard of the People's Republic of China

ICS: 29.120.50
Classification: CCSK31

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
1 Scope
2 Normative references
3 Terms and definitions, abbreviations
3.1 Terms and Definitions
3.2 Abbreviations
4 categories
4.1 Classification according to structure
4.2 Classification according to the number of phase-to-neutral voltages monitored
4.3 Classification according to installation method
5 Characteristics of POP
5.1 Feature Summary
5.2 Ratings and other characteristics
5.3 Standard and preferred values
5.4 Coordination with short-circuit protective devices (SCPD)
6 Logo and other product information
6.1 Sign
6.2 Class notation 11 of POP classified according to 4.1.
7 Standard operating conditions for use and installation
7.1 Standard conditions
7.2 Installation conditions
7.3 Pollution degree
8 Structural and operational requirements
8.1 General requirements
8.2 Mechanical design
8.3 Electric shock protection
8.4 Dielectric properties and isolation capability
8.5 Temperature rise
8.6 Operating characteristics
8.7 Mechanical and electrical life
8.8 Performance under short-circuit current
8.9 Resistance to mechanical shock and impact
8.10 Heat resistance
8.11 Resistance to abnormal heat and fire
8.12 Safety performance of POP under overstress
8.13 Performance of POP under surge current generated by impulse voltage
8.14 Reliability
8.15 Electromagnetic Compatibility (EMC)
9 Test procedure
9.1 General requirements
9.2 Test conditions
9.3 Durability test of signs
9.4 Reliability test of screws, current-carrying parts and connections
9.5 Reliability test of terminals connected to external conductors
9.6 Verification of electric shock protection
9.7 Dielectric performance test
9.8 Temperature rise test
9.9 Verification of operating characteristics
9.10 Verification of Mechanical and Electrical Lifetime
9.11 In case of a short circuit, verify the operation of the POP
9.12 Verification of resistance to mechanical vibration and shock
9.13 Heat resistance test
9.14 Abnormal heat resistance and flame resistance
9.15 Safety performance of POP under overstress
9.16 Verify the performance of the POP under the surge current generated by the impulse voltage
9.17 Verify the anti-aging performance of electronic components
9.18 Electromagnetic Compatibility (EMC)
9.19 Electric clearance and creepage distance test of electronic circuits (abnormal conditions)
9.20 Requirements for capacitors, certain resistors and inductors used in electronic circuits
9.21 Verify indicator display function
9.22 Verify manual closing under overvoltage
9.23 Verify the locking function (when applicable)
Appendix A (Normative) Test Procedures and Number of Samples for Certification Tests
Appendix B (Normative) Determination of clearances and creepage distances
Appendix C (Normative) Device for detecting free gas injection in short-circuit test
Appendix D (Informative) Method for Determining Short-Circuit Power Factor
Appendix E (Informative) Terminal Design Example
Appendix F (informative) Comparison of ISO and AWG copper wires
Appendix G (informative) SCPD 87 for short-circuit test
Appendix H (informative) POP construction according to classification 4.
References

1 Scope

This document specifies the classification, characteristics, signs and other product information, standard conditions for use and installation, requirements for structure and operation of POP requirements and test requirements.

A device (MPD) combination or an independent electrical appliance with a disconnecting device that can break the protection circuit under specified conditions.

The main protective device is a circuit breaker, RCCB or RCBO.

Note 1.The POP as a separate electrical appliance is not an automatic disconnecting protective appliance as specified in IEC 60364-4-41.

The POP is intended for use in environments with pollution degree 2 and overvoltage category III. Suitable for isolation.

It can be designed that the POP unit is assembled or embedded in the main protective device by the manufacturer, or the POP unit and the main protective device are mechanically installed on site

Or electrically coupled, or as an independent electrical appliance that can break the protective circuit under specified conditions.

These appliances are designed to relieve phase and neutral in downstream equipment by disconnecting the protected circuit when an overvoltage is detected between phase and neutral.

effects of power frequency overvoltages between neutrals (e.g. caused by a neutral fault in a three-phase supply upstream of a POP).

Note 2.In this document, "mitigating" means that POP will provide protection in most cases of power frequency overvoltage.

If the phase-to-phase rated voltage of the phase-to-phase power system does not exceed 230V, a single-wire monitor conforming to this document may be used in accordance with the manufacturer's instructions.

Control POP.

When all conductors can be broken, the POP specified in this document applies to IT systems.

This document does not apply to protection against common mode overvoltages.

This document does not apply to surge protective appliances.

2 Normative references

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

For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 1633 Determination of Vicat softening temperature (VST) of thermoplastics (GB/T 1633-2000, idtISO 306.1994)

GB/T 4208 Enclosure protection level (IP code) (GB/T 4208-2017, IEC 60529.2013, IDT)

GB 4343.1 Electromagnetic Compatibility Requirements for Household Appliances, Electric Tools and Similar Appliances Part 1.Emission (GB 4343.1-

2018, CISPR14-1.2011, IDT)

GB/T 5169.10 Fire Hazard Tests for Electric and Electronic Products - Part 10.Glow Wire/Hot Wire Basic Test Methods Glow Wire Assembly

Settings and general test methods (GB/T 5169.10-2017, IEC 60695-2-10.2013, IDT)

GB/T 5169.11-2017 Fire hazard tests for electrical and electronic products - Part 11.Basic test methods for glow wire/hot wire

Glow-wire flammability test method (GWEPT) (IEC 60695-2-11.2014, IDT)

GB/T 10963.1-2020 Electrical accessories Overcurrent protective circuit breakers for household and similar places Part 1.For AC Circuit breaker (IEC 60898-1.2015, IDT)

GB/T 10963.2-2020 Electrical accessories Overcurrent protective circuit breakers for household and similar places Part 2.For AC and

CCAP-C11-04 | CCAP-C11-09 | GB 6142 | GB/T 41963 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 165 pages — is available in the English PDF.

Referenced standards

Normative references

IEC 60529.2013 · IEC 60695 · IEC 60898

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