GB/T 14048.23-2022Low-voltage switchgear and controlgear - Part 9-1: Active arc-fault mitigation systems - Arc quenching devices (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 9-1 of GB/T 14048 "Low-voltage switchgear and controlgear". GB/T 14048 has issued the following

part.

--- Part 1.General;

--- Part 2.Circuit breakers;

--- Part 3.Switches, isolators, isolating switches and fuse combinations;

--- Part 4-1.Contactors and motor starters Electromechanical contactors and motor starters (including motor protectors);

--- Part 4-2.Contactors and motor starters Semiconductor controllers and starters for AC motors (including soft starters);

--- Part 4-3.AC semiconductor controllers and contactors for contactors and motor starters for non-motor loads;

--- Part 5-1.Control circuit appliances and switching elements electromechanical control circuit appliances;

--- Part 5-2.Control circuit electrical appliances and switching elements proximity switches;

--- Part 5-3.Proximity switches (PDDB) with deterministic functions under fault conditions for control circuit appliances and switching elements

Require;

--- Part 5-4.Special test for performance evaluation methods of small-capacity contacts of control circuit appliances and switching elements;

--- Part 5-5.Electrical emergency braking devices with mechanical latch function for control circuit appliances and switching elements;

--- Part 5-6.Control circuit electrical appliances and switching elements DC interface for proximity sensors and switching amplifiers (NAMUR);

--- Part 5-7.Requirements for control circuit appliances and switching elements for proximity devices with analog outputs;

--- Part 5-8.Three-position enabling switches for control circuit electrical appliances and switching elements;

--- Part 5-9.Control circuit electrical appliances and switching elements flow switches;

--- Part 6-1.Multifunctional electrical transfer switch electrical appliances;

--- Part 6-2.Multifunctional electrical appliances (equipment) control and protection switch electrical appliances (equipment) (CPS);

--- Part 7-1.Terminal blocks for copper conductors of auxiliary devices;

--- Part 7-2.Protective conductor terminal block for copper conductors of auxiliary devices;

--- Part 7-3.Safety requirements for auxiliary device fuse terminal blocks;

--- Part 7-4.PCB terminal block for copper conductors of auxiliary devices;

--- Part 8.Built-in thermal protection (PTC) control unit for rotating electrical machines;

--- Part 9-1.Arc-fault active suppression system arc extinguishing appliances.

This document is modified to adopt IEC 60947-9-1.2019 "Low-voltage switchgear and controlgear - Part 9-1.Active suppression of arc faults"

System Arc Extinguisher.

The technical differences between this document and IEC 60947-9-1.2019 and their reasons are as follows.

---Replace IEC 60947-1.2007, IEC 60947-1.2007/AMD1 with normative reference IEC 60947-1.2020.

2010 and IEC 60947-1.2007/AMD2.2014 (see Chapter 2, Chapter 3, 5.1~5.3, 6.1, 6.3, Chapter 7~9

Chapter), the reason is to be consistent with the latest edition of IEC 60947-1, and thus refer to the relevant IEC 60947-1.2020

The following technical differences arise in the terms.

* Changed terms and definitions (see Chapter 3);

* Added relevant requirements for deactivation and disassembly (see 6.3);

* Added requirements for insulating cooperating spacers for creepage distances, insulating cooperating spacers for electrical clearances, and continuity of protective grounding

and test requirements (see 8.1 and 9.2);

* Added DC withstand voltage requirements for dielectric properties (see 8.2, 9.3.1.2.6, 9.3.1.3.5 and 9.3.1.3.7);

* Changed the launch test requirements (see 8.3 and 9.3.2.2);

* Added modification of special test (see 9.1).

--- Replaced CISPR11.2015 and CISPR11.2015/AMD1.2016 with normatively cited CISPR11.2019 (see

Chapter 2, 9.3.2.2), the reason is for consistency with the latest version of CISPR11, and is hereby referenced in CISPR11.2019

The following technical differences have arisen in the relevant provisions of.

* Added the applicable equipment for the limit requirements of low-voltage DC power supply ports;

* Added the measurement requirements for the medium and low voltage DC power supply ports in the conducted disturbance limit.

The following editorial changes have been made to this document.

--- Change IEC 60417 in Chapter 2 to IEC 60417.2002, which is consistent with the standard cited in Chapter 6 of the original text;

--- Number all the formulas in Appendix A, and explain the contents of the formulas.

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

Introduction

Low-voltage switchgear and control equipment is a large-scale and wide-ranging industry. The products involve. circuit breakers, isolators, isolating switches and fuse sets

It is widely used in various fields such as machinery, electricity, electronics, etc., involving the control, distribution and other aspects of electric energy.

noodle. GB/T 14048 "Low-voltage switchgear and control equipment" is an important system for guiding low-voltage switchgear and control equipment related products in my country.

The column standard is to be composed of 25 parts.

--- Part 1.General. The purpose is to specify general requirements for low-voltage switchgear and controlgear.

--- Part 2.Circuit breakers. The purpose is to specify product-related requirements such as performance requirements and test methods of circuit breakers.

--- Part 3.Switches, isolators, isolating switches and fuse combinations. The purpose is to specify switches, isolators, isolating switches

And the performance requirements and test methods of fuse combination electrical appliances and other product-related requirements.

--- Part 4-1.Contactors and motor starters Electromechanical contactors and motor starters (including motor protectors). target

The purpose is to specify the performance requirements and test methods of electromechanical contactors and motor starters (including motor protectors)

off requirements.

--- Part 4-2.Contactors and motor starters Semiconductor controllers and starters (including soft starters) for AC motors.

The purpose is to specify the performance requirements and test methods of semiconductor controllers and starters (including soft starters) for AC motors.

product related requirements.

--- Part 4-3.AC semiconductor controllers and contactors for contactors and motor starters for non-motor loads. aim at

It specifies product-related requirements such as performance requirements and test methods for AC semiconductor controllers and contactors for non-motor loads.

--- Part 5-1.Control circuit appliances and switching elements Electromechanical control circuit appliances. The purpose is to specify electromechanical control

Product-related requirements such as performance requirements and test methods of electrical appliances.

--- Part 5-2.Control circuit electrical appliances and switching elements proximity switches. The purpose is to specify the performance requirements and test of the proximity switch.

Test methods and other product-related requirements.

--- Part 5-3.Requirements for proximity switches (PDDB) with specified functions for control circuit appliances and switching elements under fault conditions

beg. The purpose is to specify product-related performance requirements and test methods for proximity switches with definite functions under fault conditions.

Require.

--- Part 5-4.Special test for the performance evaluation method of small-capacity contacts of control circuit appliances and switching elements. the purpose is

Specifies the special test requirements in the performance evaluation of small capacity contacts.

--- Part 5-5.Control circuit electrical appliances and switching elements electrical emergency braking devices with a mechanical latch function. the purpose is

Specifies product-related requirements such as performance requirements and test methods for electrical emergency braking devices with mechanical latch function.

--- Part 5-6.Control circuit electrical appliances and switching elements Proximity sensors and switching amplifiers DC interface (NAMUR).

The purpose is to specify product-related requirements such as performance requirements and test methods for the DC interface of proximity sensors and switching amplifiers.

--- Part 5-7.Requirements for control circuit appliances and switching elements for proximity devices with analog outputs. The purpose is to stipulate

Product-related requirements such as performance requirements and test methods for proximity devices with analog outputs.

--- Part 5-8.Three-position enabling switch for control circuit electrical appliances and switching elements. The purpose is to specify the performance of the three-position enabling switch

Product-related requirements such as requirements and test methods.

--- Part 5-9.Control circuit appliances and switching elements flow switches. The purpose is to specify the performance requirements and test of the flow switch.

Test methods and other product-related requirements.

--- Part 6-1.Multifunctional electrical transfer switch electrical appliances. The purpose is to specify the performance requirements and test methods of transfer switch appliances.

Law and other product-related requirements.

--- Part 6-2.Multifunctional electrical (equipment) control and protection switch electrical appliances (equipment) (CPS). The purpose is to provide for control and protection

Product-related requirements such as performance requirements and test methods of protective switch appliances.

--- Part 7-1.Terminal block for copper conductors of auxiliary devices. The purpose is to specify the performance requirements of the terminal block of copper conductors.

Seek and test methods and other product-related requirements.

--- Part 7-2.Protective conductor terminal block for copper conductors of auxiliary devices. The purpose is to specify the protective conductor connection of copper conductors.

Product-related requirements such as performance requirements and test methods of wire terminal blocks.

--- Part 7-3.Safety requirements for auxiliary device fuse terminal blocks. The purpose is to specify the fuse terminal block

Safety related requirements.

--- Part 7-4.PCB terminal block for copper conductors of auxiliary devices. The purpose is to specify a PCB terminal block for copper conductors

Product-related requirements such as performance requirements and test methods.

--- Part 7-5.Terminal blocks for aluminum conductors of auxiliary devices. The purpose is to specify the performance requirements of terminal blocks of aluminum conductors.

Seek and test methods and other product-related requirements.

--- Part 8.Built-in thermal protection (PTC) control unit for rotating electrical machines. The purpose is to specify built-in thermal protection for rotating electrical machines.

Product-related requirements such as performance requirements and test methods of the protection (PTC) control unit.

--- Part 9-1.Arc-fault active suppression system arc extinguishing appliances. The purpose is to specify the performance requirements and tests of arc extinguishing appliances

Methods and other product-related requirements.

--- Part 9-2.Arc fault active suppression system Internal arc detection and suppression equipment based on optical signals. The purpose is to regulate

Product-related requirements such as performance requirements and test methods for internal arc detection and suppression equipment based on optical signals.

As people pay more and more attention to the impact of arc faults inside complete sets of equipment, there has been a need to prevent such internal arc faults.

Protection mode, which can be achieved by passive components (suppression) or active components, also known as "active arc fault suppression system".

Arc fault active suppression systems typically use an internal arc fault based on arcing effects (light, pressure, current or voltage harmonics, etc.)

Control appliance (IACD) and an actuator to suppress arcing.

The actuator can be a circuit breaker upstream of the line, which trips to cut off the fault current, or an arc extinguisher that can

The upstream short-circuit protection device directs the fault current to a dedicated low-impedance loop before cutting the circuit. The arc extinguishing device specified in this document is an electric

An important link in the arc fault active suppression system.

Low-voltage switchgear and controlgear

Part 9-1.Active Arc Fault Suppression Systems

Arc extinguishing appliance

1 Scope

This document applies to low-voltage arc extinguishing equipment, referred to as AQD, which eliminates low-voltage complete sets of equipment (symbol) by forming a low-impedance current loop.

arc faults in typical low-voltage switchgear and controlgear conforming to the IEC 61439 series, so that the arcing current is transferred to a new current return

road. This new current loop will be maintained until the short-circuit protection device (SCPD) interrupts the short-circuit current.

These appliances are installed on the main distribution line of the low-voltage plant, preferably as close to the mains as possible.

The rated voltage does not exceed AC 1000V or DC 1500V.

This document does not include.

--- Sensors for detecting arc faults;

--- Electrical appliances for triggering the function of arc extinguishing appliances;

--- Appliances for cutting off arc fault currents;

--- Special requirements for AQD used in explosive atmospheres (eg ATEX).

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 2423.4-2008 Environmental testing of electrical and electronic products - Part 2.Test method Test Db. Alternating damp heat (12h

12h cycle) (IEC 60068-2-30.2005, IDT)

Note. GB/T 5465.1-2009 Graphical Symbols for Electrical Equipment Part 1.Overview and Classification (IEC 60417DB.2007-01, MOD);

GB/T 5465.2-2008 Graphical symbols for electrical equipment - Part 2.Graphical symbols (IEC 60417DB.2007, IDT).

trolgear-Part 1.Generalrules)

Note. GB/T 14048.1-2012 Low-voltage switchgear and control equipment - Part 1.General (IEC 60947-1.2011, MOD).

assemblies)

Note. GB/T 7251 (all parts) Low-voltage switchgear and control equipment [IEC 61439 (all parts)].

CISPR11.2019 Limits and methods of measurement of radio frequency disturbance characteristics of industrial, scientific and medical equipment (Industrial, scientific

urement)

Note. GB 4824-2019 Limits and Measurement Methods of Radio Frequency Disturbance Characteristics of Industrial, Scientific and Medical Equipment (CISPR11.2016, IDT).

3 Terms and Definitions

The terms and definitions defined in IEC 60947-1.2020 and the following terms and definitions apply to this document.