GB/T 34581-2017General technical requirements for photovoltaic system DC circuit breakers (English PDF)

1 Scope

This standard specifies the terms and definitions of DC circuit breakers for photovoltaic systems, classification, circuit breaker characteristics, product information, normal work, installation

And transport conditions, structural requirements, performance requirements and test methods.

This standard is provided.

--- DC system for PV system circuit breaker requirements;

--- Used to verify the performance of the product in the PV environment and the sustainability of the test.

This standard applies to DC rated voltage not exceeding 1500V, is expected for the photovoltaic (PV) system of DC circuit breakers, hereinafter referred to as "PV breaker".

The electrical performance, environmental and operating conditions of DC circuit breakers for PV systems are in accordance with the general circuit breaker conditions specified in GB 14048.2 different.

Note. The ground type of the DV DC power supply.

a) Not grounded, such as polysilicon or monocrystalline PV modules;

b) Functional negative grounding, such as thin film photovoltaic modules.

This standard of DC DC circuit breaker requirements and the corresponding test methods apply to the application of PV systems.

Manufacturers and users to consult the project requirements in Appendix A.

Additional requirements for electronic overcurrent circuit breakers are given in Appendix B.

The requirements and test methods for EMC of PV circuit breakers are given in Appendix C.

See Appendix D for requirements of feature symbols and graphical representations.

The requirements for PV circuit breakers without overcurrent protection are given in Annex E.

The EMC requirements and test methods for accessories of PV circuit breakers are given in Appendix F.

See Annex G for requirements of the instantaneous trip circuit breaker (ICB).

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article

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

GB/T 2423.22-2012 Environmental testing Part 2. Test methods Test N. Temperature changes

Low voltage switchgear and controlgear - Part 1. General

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

GB/T 14048.7-2016 low-voltage switchgear and control equipment - Part 7-1. Auxiliary components Copper conductor terminal block

GB/T 16895.32-2008 Building Electrical Installations - Part 7-712. Requirements for Special Installations or Locations Solar Photovoltaic (PV) power supply system

GB/T 16927.4-2014 high voltage and high current test techniques - Part 4. Definitions and requirements of test current and measurement systems

3 Terms and definitions

GB/T 14048.2-2008 defined and the following terms and definitions apply to this document.