Why was the insulation resistance item cancelled in GB4706 1 1998

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Standard number: GB

Standard name: General requirements for the safety of household and similar electrical appliances.

Standard Status: Active.

English title: household and similar electrical appliances-safety-part 1: general requirements

Alternate case: Alternate GB portion.

Date of implementation: 2006-8-1

Promulgating Departments:General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China.

Brief introduction: This part deals with the safety of household and similar electrical appliances with a rated voltage of no more than 250V for single-phase appliances and no more than 480V for other appliances. Appliances that are not intended for general household use but may still pose a danger to the public, such as those intended for use by non-professional persons in shops, light industry and farms, also fall within the scope of this Part.

As a matter of practical terms, the common dangers of the various appliances covered in this section are those that may be encountered by all persons in the dwelling and in the environment surrounding the dwelling.

Leakage current is used instead.

The electrical strength of the power cord is tested with a hipot tester.

The electrical strength of the power line is the withstand voltage strength of the cable medium, and the size and time of the test voltage are determined according to different voltage levels, conductor cross-sections, and insulation thicknesses.

The withstand voltage tester can be called an electrical dielectric dielectric strength tester, a dielectric strength tester, etc. according to its function. Its working principle is: add a higher than normal working voltage to the insulator of the equipment under test for a specified period of time, and the voltage added to it will only produce a small leakage current, so the insulation is better.

The test system consists of three modules: program-controlled power supply module, signal acquisition and conditioning module and computer control system. Select two indicators of the withstand voltage tester: the maximum output voltage value and the maximum alarm current value.

The withstand voltage tester tests the compressive strength of the cable, first soak the required length cable in water according to the standard, after the specified time, set the voltage and leakage current of the instrument according to the standard requirements, test time, and then apply the voltage to the water, connect the conductor to the circuit, press the test button to start the test, and complete the test red for not passing, green means passing.

The current value of the wire load specified in the national standard (partial).

The allowable long-term load current of 1 square copper core wire is: 6A---8A square copper core wire allows long-term load current to be 8A---15A square copper core wire is allowable long-term load current

The allowable long-term load current of 16A---25A4 square copper core wire is: 25A---32A6 square copper core wire is allowable long-term load current: 32A---40

If your certificate is still in normal condition and has not been renewed, it can only be said that your certificate was omitted when the certification authority suspended the unrenewed certificate. However, after so many years of supervision, it is quite strange that no questions have been raised.

It's no longer valid, and it's being executed now.

Safety of Household and Similar Appliances Part I: General Requirements.

In other words, the implementation standard of your product means that the quality of your product must meet the specified requirements, and this requirement is only a general requirement, and different products have different requirements. You can take a look at the details.

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