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1. DC resistance: 20 centigrade, 0.4mm copper wire, less than equal to 148 Omega /km, 0.5mm copper wire, less than equal to 95 Omega /km.
2. insulation electrical strength: 1min 1kV between conductors does not break through conductors and shield 1min 3KV from breakdown
3. insulation resistance: each core line is grounded with the rest of the wire, the control cable is greater than 10000M Omega.Km, and the HYAT cable is greater than 3000M Omega.Km.
4. working capacitance: the average value is 52 + 2nF/km
5. the defense degree of the far end crosstalk: the average power of the specified combination is greater than 69dB/km when 150kHZ.
The control cable has the characteristics of moistureproof, anticorrosion and damage prevention, and can be laid in the tunnel or the cable trench.  power cable is used to transmit and distribute high power energy in main line of power system. The control cable can transmit electric energy directly to the power connection line of all kinds of electrical equipment and appliances from the point of power system distribution. The rated voltage of the power cable is generally 0.6/1kV and above, and the control cable is mainly 450/750V. When the power cables and control cables of the same specifications are produced, the insulation and sheath thickness of the power cable are thicker than that of the control cables.
(1) the control cable belongs to the cable of the electrical equipment, and the power cable is the 2 of the five major categories of the cable.
(two) the standard of control cable is 9330, and the standard of power cable is GB12706.
(three) control cable insulation wire color is generally black and white printing, low voltage power cable is usually color.
(four) the section of the control cable is generally not more than 10 square, the power cable is mainly the transmission of electric power, and generally it is large section.
Orient Internation Holding Shanghai Foreign Trade Co., Ltd. (formerly Shanghai Foreign Trade Corporation), established in January 1988, is a local import-and -export-oriented trading enterprise. Staffed with a number of professionals, who have years of experience in international trade, the company persists in developing business relations with domestic and overseas clients, and enjoys an established reputation both at home and abroad. For years in succession, its annual business amount had always been above USD1,000,000,000, especially for the year of 2002, it has reached USD1,250,000,000,Which ranks the first in Shanghai. Entering 1990's, Shanghai has sped up the implementation of the strategy of "opening up and developing Pudong" and "building the city into one of the international economic, financial and trade centers." To further expand the international market, the company has established Pudong branch, Shanghai Shantra Trading Co., Ltd., Shanghai Dong Song International Trading Co., Ltd., Shanghai Dong Mao Trading Co., Ltd., Shanghai Orient International Tendering Co., Ltd., and Shanghai Jiu Mao Foreign Trade Co., Ltd. were founded in succession which elevate the whole business scale to a higher level. The coming turn of the century is a crucial period for the future development. In November 1996, with the restructuring of the modern enterprise system, the company joined Orient international (Holding) Co., Ltd. and renamed itself as a group member accordingly. Facing new opportunities and challenges, of international economy and entrance into WTO, Shanghai Foreign Trade Co., Ltd. shall continue to develop the enterprise culture of honesty and credibility and carry out the muli-extension strategy relying on new industry and focusing on trading, with the support from Orient International Holding, to bring into full play of the multi-function and strength of a comprehensive group engaged in trade, finance, information, service and development. Based on Shanghai and facing China, the company is marching towards the global market. More+