高压电器件壳体考验规程(国外英文资料).docVIP

低压电器件壳体检验规程(国外英文资料) Check the inspection procedure for the shell of low voltage electrical appliances The eye of In order to ensure the quality of low-voltage complete sets of equipment, the inspection and validation of the shell are controlled and the rules are set out. Scope of application The factory produces the shell, the outsourcing shell. On the basis of GB/T20641 standard Terms of inspection Third party issues inspection reports; Witness test in the field; Self-check the test Qualified determination Inspection in the production process, if there is a failure, the case is not qualified, such as mass production, according to the 10% spot check, such as the unqualified, the whole product test Inspection records The inspector shall do the product inspection and verification record and save it. Date of establishment: : review: date: approval: date Low voltage electrical unit housing inspection report Inspection items According to the standard The specific requirements The inspection results Shell appearance No bumps, bruises, no surface coatings No visual measurement of the whole deformation 3, according to the regulation requirement Protection rating GB/T20641 According to GB4208, verify the hull to prevent the solid foreign body from entering and entering the water protection, the test knot The fruit should meet the specified protection level for IP30 The static load GB/T20641 1.25 times the maximum allowable load on the mounting plate or switch equipment and control set For the support part or door, keep 1h and the shell should be free of cracks and permanent deformation. Insulation materials performance GB/T20641 The shell is placed in (70 + + 2) 0C box 168h, with relative humidity 45% ~ 55% 96h in the environment, there should be no cracks. Test method: 2.5 mm thick specimen, spherical pressure test at temperature (70 + + 2) 0C In the heating box, the duration is 1h, and the ball is placed vertically on the test surface The force is 20N, the ball pressure i