mbt calzature GB4706.1-1998 standard on the part o

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GB4706.1-1998 standard on the part of the problem of understanding and

To be too high, while the Chapter 19 test is to test the equipment in use in non-normal should be a safe temperature to avoid damage to a -{+ T A I a | ~} 4 a 2 r fixed 50d ℃ temperature test records 400 ℃ 300 ℃ 2010 ℃ when the same thttp: / / 'wwwsthe ~ com. cn China's annual consumption of 160 million tons of copper, copper tube production capacity of 15 to 20 tons, of which copper tubes for air conditioning system for Ling, with about 25%. Copper was purple, atomic number 29, the relative density of 8.9, the melting point of 1083. C thermal conductivity for the actinides 400W/InK, are higher than any other metal; copper also has high corrosion resistance Chong; in the low temperature mechanical properties of copper did not change significantly. These basic characteristics of copper in air conditioners and to make the system widely used industry-ling. Production Status 1ACR brass Ling system with air conditioning and brass opperTubeforAir-eondi-tieingandRd Rights cage fan Field5erce) referred to as ACR copper tube,[link widoczny dla zalogowanych], different aspects of the classification are different: from the provision of the state is divided into coils and straight; from processing methods into a seamless tube and pipe joints; from the product range is divided into a smooth tube and thread pipe. Ling with the air system of the industry wither and the rapid development of ACR copper tubes in China has made great progress. China's current total number of ACR copper tube manufacturer in more than 100, of which more than 10,000 tons of annual production capacity of only three companies, except state-owned, collective,[link widoczny dla zalogowanych], private, and other properties outside of the individual. There are multinational corporations to invest in joint ventures and wholly owned enterprises. At present the annual production of ACR copper coil tube Chong force is about 5 million tons. One thread tube about 40% '50% 2AGR copper tube production process a long history of foreign copper, brass, Germany's first production plant was built in 1708, and Japan in the 19 years it established its own copper Tube fire,[link widoczny dla zalogowanych], mechanical damage or electrical shock hazard. 2.22 This chapter should be noted that non-experimental work confirmed by end of the trial,[link widoczny dla zalogowanych], usually there are three cases: ① non-self-reset circuit breakers; ② steady state established; ⑧ or deliberately set by the thermal component of the weak parts damage. 2.2.3 The self-resetting thermal circuit breaker with electrical appliances and heating appliances should be carried out in this chapter how to test it? Electrical apparatus can refer to the requirements of the standard tests in Appendix D; and electric appliances should work to establish a steady state, steady state refer to the relevant provisions of Chapter 11, according to the joint-type apparatus and electric appliances electric appliances 2.3, respectively, to test the stability of the stability testing requirements of Chapter 2O for portable devices and in vertical apparatus,[link widoczny dla zalogowanych], should have sufficient stability sex. Stability test. Apparatus is not connected to the mains to any state in a normal place and the horizontal 1O. The tilt angle of the plane, the apparatus should not be overturned; for appliances with heating elements to increase the tilt angle to 15. State, repeat the test. If the appliance in one or more directions on the tip. It overturned in the state of each subjected to Chapter 11 of the test. Chapter ratio test seems easy. But believe it would fall into such a misunderstanding: electric apparatus 1O. Angle inclined plane test, and electric appliances and joint-type apparatus for 15. Angle inclined plane test. In fact, this type of electric appliances and equipment stability test method for the joint understanding is wrong. The correct test method should be: type of electric appliances and apparatus for the stability of the joint test, we must first l0. Angle inclined plane test, if the apparatus tip over, you will need to conduct 15. Test the stability of the inclined plane angle during the test, some products should be considered the actual situation. Chapter 20 according to the standard requirements of Article 1: intended by the user during normal use of liquid filling apparatus, to the empty state, or the amount of water filling the worst fan, until the factory marked the capacity of the state, the test reference literature 1GB4706.1-1992 \2GB47061-1998 (for household and similar electrical appliances safety barrier Part I: General requirements) 3GB2422-1981 (electric and electronic products environmental testing procedures for research terminology = '4 GB2900.1-~ 982 (Electrotechnical terminology basic terminology '5 IEC335- 2 a l5-1995Safety0fhousehold. & nds ~ milardeetricalapplianoesPart2: Pm'deularreqlm'eme, nlsfor., ppu & ∞ ∞ forheatingliquids. (glass series Han Bin)
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