A, electrical installation of low-voltage electrical construction and acceptance specification (GB 50254-1996)?
1, the general principles?
2, general provisions?
3, low voltage circuit breaker?
4, low-voltage disconnectors, knife switches, transfer switches and fuse combinations?
5, residential appliances, leakage protector and fire electrical equipment?
6, low voltage contactors and motor starters?
7, controllers, relays and travel switches?
8, resistors and varistors?
9, Solenoid?
10, fuse?
11, engineering handover and acceptance?
Second, the shell protection level (IP code) (GB 4208-2008)
1, all types of products cited the degree and mode of shell protection level, as well as the use of what kind of shell, left to the product standards to decide on the specific protection level of the test should be in line with the provisions of this standard, if necessary, in the relevant product standards can be increased to meet the additional requirements.
2, the special type of equipment, product standards can specify different requirements, but at least to ensure the same level of safety.
3, this standard is only considered in all respects in line with the provisions of the relevant product standards shell, in normal conditions of use, the shell of materials and processes should ensure that the required level of protection.
4 If a certain type of equipment to meet the general requirements of the test and the selected level of protection applicable to the type of equipment, this standard also applies to the type of equipment empty shell.
5, about mechanical damage, corrosion, corrosive solvents (such as cutting fluid), mold, pests, solar radiation, icing, moisture (such as caused by condensation), explosive gases and other external influences or environmental conditions on the shell and the shell of the equipment damage to the protective measures as well as to prevent contact with the enclosure of the outside of the hazardous moving parts (such as the fan) by the relevant product standards.
6, not connected to the shell of the partition as well as specifically set up for personal safety of the barrier, not regarded as part of the shell, this standard will not be studied.
Three, "building electrical installations (Part 7-710): the requirements of special installations or premises Medical premises (GB 16895.24-2005/IEC 60364-7-710:2002)"
1, put forward by the China Electrical Appliance Manufacturers Association (CEMA), the National Standardization Technical Committee for Electrical Installations in Buildings (NSTC) under the auspices of the China Light International Engineering Co. Ltd. is responsible for drafting, China Aviation Industry Planning and Design Institute, Beijing Longqing Lida Science and Trade Development Center (Germany Bendel medical products agent), Qisheng Aozhi Electrical Products Service (Shanghai) Co., Ltd. to participate in the drafting, the main drafters: Huang Miaoqing, Wang Houyu, Zhou Xian, Ye Qing.
Four, GB7251.1-2013 "low-voltage complete sets of switchgear" (IDT IEC60439-1 1999) standard provisions.
Low-voltage switchgear belongs to the inclusion of 3C certification mandatory certification products "catalog" of products.
1, rated insulation voltage 690V
2, rated operating voltage 380V, 660V
3, rated frequency 50Hz
4, rated operating current:
horizontal busbar rated current 630-6300A
vertical busbar rated current 630-1600A
Rated short-time withstand current
Rated peak withstand current (IS) 30-80KA
Rated short-time withstand current (IS) 30-80KA
V. Construction and Acceptance Specification for Disks, Cabinets, and Secondary Circuit Wiring of Electrical Installation Engineering
1. Construction and Acceptance Code" for the national standard, No. GB50171-2012, since December 1, 2012 onwards. Among them, Article 4.0.6 (1), 4.0.8 (1), 7.0.2 (paragraph) for mandatory provisions, must be strictly enforced.
2, the original "installation of electrical installations, cabinets and secondary circuit wiring construction and acceptance specification" GB50171-92 shall be repealed at the same time.
Baidu Encyclopedia - enclosure protection level (IP code)
Baidu Encyclopedia - Electrical Installation Engineering Construction and Acceptance Code