GB/T 37145-2018Cabinets for low-voltage switchgear—Mechanical structures for drawout functional unit (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the environmental adaptability, surface, position and lock of the mechanical structure products for the extractable functional unit in the low-voltage cabinet.

Edge performance, mechanical properties, degree of protection, information and inspection rules.

This standard applies to the installation and supply to the user by the cabinet manufacturer, and the rated voltage is less than 1000V, the frequency is 50Hz (or 60Hz), or DC below 1500V, including but not limited to.

---The mechanical structure (drawer) used to apply the withdrawable functional unit in the electrical circuit, the material for manufacturing these products can be metal Material, it can also be an insulating material;

---Mechanical mechanism for realizing the function unit to push or pull out, and to realize the positional positioning and locking function of the functional unit.

Moreover, these products are generally equipped with electrical components for providing electrical signals;

--- for connecting the mechanical coupling mechanism between the operable electrical component and the handle shaft in the functional unit;

--- Guide rails, hinges, etc. for functional units for supporting or positioning;

--- Products used to achieve mechanical interlocking.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 2423.1-2008 Environmental testing of electric and electronic products - Part 2: Test methods Test A. Low temperature

GB/T 2423.2-2008 Environmental testing of electrical and electronic products - Part 2: Test methods Test B. High temperature

GB/T 2423.3-2016 Environmental testing - Part 2: Test method test Cab: constant damp heat test

GB/T 2423.5-1995 Environmental testing for electric and electronic products - Part 2: Test methods Test Ea and guide. Impact

GB/T 2423.6-1995 Environmental testing for electric and electronic products - Part 2: Test methods Test Eb and guide. Collision

GB/T 2423.8-1995 Environmental testing of electric and electronic products - Part 2: Test method test Ed. Free fall

GB/T 2423.10-2008 Environmental testing of electric and electronic products - Part 2: Test method test Fc. Vibration (sinusoidal)

GB/T 2423.17-2008 Environmental testing of electric and electronic products - Part 2: Test method test Ka. salt spray

GB/T 2828.1-2012. Sampling procedures for counting sampling - Part 1. Quantitative inspection by batches plan

GB/T 4207-2012 Determination of resistance to tracking marks and comparison of electrical tracking index of solid insulating materials

GB/T 4208-2017 enclosure protection grade (IP code)

GB/T 5169.10-2017 Electrical and electronic products - Fire hazard testing - Part 10: Glowing wire/hot wire basic test method burning Hot wire device and general test method

GB/T 5169.11-2017 Electrical and electronic products - Fire hazard testing - Part 11: Glowing wire/hot wire basic test method Glowing wire flammability test method (QWEPT)

GB/T 11021-2014 Electrical insulation heat resistance and representation

GB/T 12113-2003 Method for measuring contact current and protective conductor current

GB/T 14048.1-2012 Low-voltage switchgear and control equipment - Part 1: General

GB/T 16842-2016 Cover tester for protection of people and equipment