GB/T 32902-2016Circuit-breakers incorporating residual current protection with auto-reclosing functions (CBAR) (English PDF)

1 Scope

This standard specifies the technical requirements and tests for residual current protection circuit breakers with automatic reclosing function (hereinafter referred to as CBAR) program.

CBAR for AC rated frequency 50Hz, rated voltage does not exceed 440V low voltage distribution lines. Can be installed in remote, nobody

Such as a communication base station, a traffic signal point, or a rural outdoor power distribution unit. When the CBAR due to lightning surge or instantaneous ground leakage

Leakage current caused by tripping, it can be restored by automatic reclosing power supply without the operator's manual operation.

Note. CBAR is mainly used by professionals.

CBAR can be used to provide additional protection against fire hazards and other hazards due to ground faults, as well as indirect contact with persons protection.

Residual current circuit breakers with rated residual operating current less than or equal to 0.03A should not have reclosing function.

CBAR can have overload, short circuit protection, but should not overload, short circuit and manual opening of the case of automatic reclosing.

CBAR residual current action function can be related to the power supply voltage or irrelevant.

Electron overcurrent protection with CBAR, its overcurrent protection function should be independent of line voltage or any auxiliary power supply.

CBAR can have other functions, such as. communication, over-voltage protection, etc., can also add some other accessories, such as. lightning protection

Blocks, etc., should meet the appropriate standards, but these features can not affect the functional requirements of this standard.

The technical requirements of this standard apply to normal temperature environmental conditions and CBAR expected to be used for pollution level 3. For more stringent

Cool environment conditions used by CBAR, manufacturers can supplement the necessary technical requirements.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article

Pieces. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 2423.4-2008 Environmental testing for electric and electronic products - Part 2. Test methods - Test Db alternating damp heat (12 h

12h cycle)

GB 4824-2013 Industrial, scientific and medical (ISM) RF equipment harassment characteristics Limits and measurement methods

Residual current - operated electrical protection - General requirements

Low - voltage switchgear and controlgear - Part 1. General

Low - voltage switchgear and controlgear - Part 2. Circuit - breakers GB 14048.2-2008

GB 16916.1-2014 Residual current operated circuit breaker (RCCB) with no overcurrent protection for household and similar use Part 1

Points. general rules

GB 16917.1-2014 Residual current operated circuit breakers with overcurrent protection for household and similar use (RCBO) Part 1

Points. general rules

Common parts of electric shock protection devices and equipment GB/T 17045-2008

Electromagnetic compatibility - Testing and measurement techniques - Electrostatic discharge immunity test GB/T 17626.2-2006

GB/T 17626.3-2006 Electromagnetic compatibility test and measurement technology Radio frequency electromagnetic radiation immunity test

GB/T 17626.4-2008 Electromagnetic compatibility test and measurement techniques Electrical fast transient burst immunity test […]