Information technology products
According to different functions, information technology products need to comply with regulations including safety, electromagnetic compatibility, telecommunication regulations, wireless spectrum, etc. Almost all products must meet the regulatory requirements of safety and electromagnetic compatibility, while the telecommunication regulations only require when the product receives the communication interface, and the wireless spectrum is only required when the product is applied to the wireless transmission.
The design trend of information technology products is light, thin, short and small. Generally speaking, the smaller the design volume is, the more difficult it is to meet the standard requirements. If CRT is used in the product, the safety requirements of X-ray shall be met. If laser is used, the safety of laser shall also be considered.
Information technology products are mostly designed and marketed globally with the same products, and most of them use DC power or 100-240Vac city power. If the product obtains CB report in safety certification, it can be recognized by most countries.
Product range:
Computer (such as PDA / Pocket PC, desktop computer, notebook computer), computer peripheral products (such as keyboard, mouse, scanner, printer, display), communication network products (such as telephone, hub, modem, router, telephone switch, fax machine, multi-function copy / scan / print system), information processing products (such as copier, cash register, and number) Word camera, etc.), office supplies (such as paper shredder, glue machine, punch, photo printing equipment, etc.), power equipment (such as UPS uninterruptible power supply, power adapter / supplier, etc.).
Executive standard:
EMC:EN 55032/EN 55035 LVD:EN 60950-1
Safety inspection items:
Although general electronic and electrical products must meet different standards, the test requirements mainly include:
1. Inspection of nameplates, marks and instructions
Mainly check whether the description is in accordance with the standard requirements, such as text application in the official language of the place of sale, so as to avoid misunderstanding
2 rated input and output (power consumption)
It mainly detects whether the input power / current of the product is consistent with the calibrated value and whether it exceeds the standard limit value
3. Temperature rise test and durability test under normal conditions
-It mainly assesses whether the product will generate excessive temperature rise inside and outside the product during normal use, so as to prevent damage to users, environment and parts
-The effect of temperature rise is related to the heat source and heat dissipation conditions of the product, including the power consumption, structure, position of the heating element, parameters and position of the temperature control element, shell material and shape, electrical structure of the equipment, etc
-The structural rectification of the product and the change of temperature elements will lead to the change of temperature rise state
-Some products with continuous and long-term use, such as lamps and lanterns, shall also undergo long-term durability test
4 abnormal condition test
-It mainly assesses the safety of products under abnormal conditions, such as the misuse of users, the abnormality of power grid, and the failure of electronic and electrical components
-The safety of the product is related to the electrical design, electrical structure and setting of protective devices (fuse and fuse)
5 electrical strength and insulation test
Mainly check the insulation performance of the product's insulation system, including: high voltage test, leakage current test, insulation resistance test
6. Tide, overflow and rain test
Damp test - to assess the electrical and insulation performance of the product in the damp environment,
Overflow test - to assess the overflow performance of products using liquid, such as rice cooker, electric kettle, etc
Rain test - products used outdoors and in toilets should be protected against water
7 mechanical property test
-The stability of the product is related to the center of gravity and the base of the product
-Mechanical hazard, mechanical strength of shell material, mechanical protection of moving parts, protection of sharp edges
8. High temperature and fire resistance test of materials
Mainly check whether there is deformation and fire hazard in the use of materials
This test is related to the selected material grade and the material temperature of the product in the normal temperature rise and abnormal temperature test
9 electronic and electrical components
-Safety related parts (such as power cord, plug, power switch, fuse, transformer, fuse, thermostat, etc.) shall be separately certified
-If the switch and transformer are not separately certified, they can be tested at random, but the test cost shall be increased
-The parameters of the parts shall meet the requirements of the product, especially in the case of replacement of parts. The parameters of the changed parts shall be the same as those of the test, otherwise the corresponding test and cost shall be increased
10 protection against electric shock
Mainly check the electric shock protection between dangerous electrified body and accessible parts
11 electrical structure inspection
Mainly check whether the structural parts in the product meet the requirements of safety standards, including power line, internal wire, terminal block, protective grounding, electrical and mechanical connection, etc
12 creepage distance, electrical clearance and insulation thickness
It is mainly to check the insulation surface and space distance between dangerous electrified body and accessible parts, and the thickness of insulation materials.
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