1, general rules?
2. General provisions?
3. Low voltage circuit breaker?
4. Low-voltage disconnector, knife switch, transfer switch and fuse combination electrical appliance?
5. Household appliances, leakage protectors and fire-fighting electrical equipment?
6. Low-voltage contactors and motor starters?
7. Controller, relay and travel switch?
8. Resistance and rheostat?
9. Electromagnet?
10, fuse?
1 1, project handover acceptance?
Second, the shell protection level (IP code) (GB4208-2008)
1. The degree and method of citing the protection level of the enclosure for various products and the type of enclosure to be used are left to the product standard. The tests for specific protection levels shall comply with the provisions of this standard. When necessary, supplementary requirements can be added to the relevant product standards.
2, for special types of equipment, product standards can stipulate different requirements, but at least to ensure the same level of safety.
3. This standard only considers the shells that meet the relevant product standards in all aspects. Under normal use conditions, the material and technology of the shell shall ensure the required protection level.
If a certain type of equipment meets the general requirements of the test and the selected protection level is suitable for this type of equipment, this standard is also applicable to the empty shell of this type of equipment.
5. Relevant product standards stipulate protective measures to prevent damage to the enclosure and equipment inside the enclosure due to external influences such as mechanical damage, corrosion, corrosive solvents (such as cutting fluid), mold, insect pests, solar radiation, freezing, humidity (such as condensation) and explosive gas, and contact with dangerous moving parts (such as fans) outside the enclosure.
6. The partition wall not connected with the shell and the barrier specially set for personal safety are not regarded as a part of the shell, so this standard is not studied.
Three. Electrical installation of buildings (Part 7 -7 10): Requirements for special devices or places Medical places (GB16895.24-2005/IEC 60364-7-710: 2002).
1, proposed by China Electrical Apparatus Industry Association, centralized by National Technical Committee for Standardization of Building Electrical Devices, drafted by China Zhongqing International Engineering Co., Ltd., with the participation of China Aviation Industry Planning and Design Institute, Beijing Lida Science and Trade Development Center (the general agent of medical products in Baender, Germany) and Qisheng Aozhi Electrical Products Service (Shanghai) Co., Ltd., mainly drafted by Huang, Wang and Julia.
Four. Gb 7251.1-2013 low-voltage switchgear (iec 60439-1/999).
Low-voltage switchgear is listed in the catalogue of compulsory certification products with 3C certification.
1, and the rated isolation voltage is 690v.
2. The rated working voltage is 380V and 660V.
3. The rated frequency is 50Hz.
4. Rated working current:
The rated current of the horizontal bus is 630-6300A.
Rated current of vertical bus is 630- 1600A.
5, rated short-term withstand current
The rated peak withstand current (IS) is 30-80kA.
The rated short-term withstand current (IS) is 30-80kA.
Verb (abbreviation of verb) Code for construction and acceptance of wiring of panels, cabinets and secondary circuits in electrical equipment installation engineering
1. The Code for Construction and Acceptance of Wiring of Disks, Cabinets and Secondary Circuits of Electrical Equipment Installation Project is now approved as the national standard, numbered GB50171-20 12, and implemented from 20 12 to12. Among them, Articles 4.0.6 (1), 4.0.8 (1) and 7.0.2 (paragraph) are mandatory and must be strictly implemented.
2. The original Code for Construction and Acceptance of Wiring of Disks, Cables and Secondary Circuits in Electrical Equipment Installation Project (GB50 17 1-92) shall be abolished at the same time.
Baidu Encyclopedia-Shell Protection Level (IP Code)
Baidu Encyclopedia-Code for Construction and Acceptance of Electrical Device Installation Project