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通信信號電纜

MHYV礦用通信電纜價格：元/米

发布时间：2014-04-19 09:21 来源：未知

矿用阻燃通信电缆

電纜名稱：礦用通信電纜

電纜品牌：武汉第二電線電纜有限公司（飞鹤牌武汉二厂電線電纜）、武汉电缆集团有限公司和深圳永盛发電線電纜实业有限公司
適用範圍：用于井下作電話通信焊線、配線和用戶線路
電纜型號：MHYV系列等
參考價格：5元/米（來電咨詢13995668491)
合格證書：3C正品産品合格證和檢測報告
是否含稅：用戶自行選擇是否開稅票
電纜價格：電話咨詢027-85667887

一、電纜簡介：

礦用通信電纜执行标准:MT818.14-1999

MHY32 1×4×1.38钢丝铠装通信电缆

MHYV 1×2 2×2 1×4 5×2×7/0.28礦用通信電纜用于平巷斜巷及机电硐室

MHJYV 4/0.28铜线+3/0.28钢线 1×22×2礦用通信電纜用于机械损伤较高平巷和斜巷

MHYAV 1/0.8 20×2 30×2 50×2 ×0.8礦用通信電纜用于较潮湿的斜井和平巷

MHY32 1×4×1.38钢丝铠装聚氯乙烯护套礦用通信電纜用于竖井和斜井

二、主要技術性能及指標

電纜性能指標

電纜性能指標

20℃时导体直流电阻 Ω/km 7/0.28 ≤45 7/0.283钢4铜≤731/0.8≤36.7

固有衰减(800～1000HZ) dB/km ≤1.1 ≤1.3 ≤0.95

20℃时电缆绝缘线芯绝缘电阻 MΩ.km ≥3000

线对工作电容(800～1000HZ) uF/km ≤0.06

近端串音衰减(800～1000HZ) dB/500m ≥70

电感(800～1000HZ) uH/km ≤800

耐交流工频电压 1.5KV/1min通过

直流电阻差 ≤环阻的2%

礦用通信電纜的使用特性

导体的长期允许工作温度-40～+50℃；

平均最大相对湿度为≤95%(+25℃时)

允许附设与安装的温度应不大于-10℃

最小弯曲半径：MHYV、MHJYV型电缆为电缆外径的10倍，其它型号的电缆为外径的15倍。

三、主要用途：

礦MHYV礦用阻燃通信電纜用途用于井下作電話通信焊線、配線和用戶線路。

使用條件:電纜使用環境溫度爲－40℃～+50；在25℃時濕度爲95%；電纜敷設溫度≥－10℃；電纜敷設時的彎曲半徑MHYV≥10倍電纜外徑，其余型號≥15倍電纜外徑。

四、礦用通信電纜型号：

铠装礦用通信電纜：MHYA32 MHYV32 MHYV32 PUYV39-1

屏蔽礦用通信電纜 MHYVRP MHYVP PUYVRP PYVP

MHYV (1×2 2×2 1×4 5×2) ×7/0.28聚乙烯绝缘聚氯乙烯护套煤礦用通信電纜用于平巷斜巷及机电硐室MHJYV 4/0.28铜线+3/0.28钢线 1×2 2×2加强线芯聚乙烯绝缘聚氯乙烯护套煤矿用通信电缆用于机械损伤较高平巷和斜巷MHYAV 1/0.8 (20×2 30×2 50×2) ×0.8聚乙烯绝缘铝聚乙烯粘结层聚氯乙烯护套煤礦用通信電纜用于较潮湿的斜井和平巷MHYA32 (30×2 50×2 80×2) ×0.8聚乙烯绝缘铝聚乙烯粘结层钢丝铠装聚氯乙烯护套煤礦用通信電纜用于竖井和斜井命名代号煤矿用阻燃通信电缆

MHYV 5X2X0.5 10X2X0.5 20X2X0.5 30X2X0.5 50X2X0.5 80X2X0.5 100X2X0.5

MHYV 5X2X0.6 10X2X0.6 20X2X0.6 30X2X0.6 50X2X0.6 80X2X0.6 100X2X0.6

MHYV 5X2X0.7 10X2X0.7 20X2X0.7 30X2X0.7 50X2X0.7 80X2X0.7 100X2X0.7

MHYV 5X2X0.8 10X2X0.8 20X2X0.8 30X2X0.8 50X2X0.8 80X2X0.8 100X2X0.8

MHYV 5X2X0.9 10X2X0.9 20X2X0.9 30X2X0.9 50X2X0.9 80X2X0.9 100X2X0.9

MHYV 5X2X1.0 10X2X1.0 20X2X1.0 30X2X1.0 50X2X1.0 80X2X1.0 100X2X1.0

礦用通信電纜对数：5 10 20 30 50 80 100 对

矿用通讯电缆导体直径0.5 , 0.6 , 0.7 , 0.8 , 0.9 , 1.0（mm）

我公司的礦用通信電纜各种产品均有《煤安标志》证书，规格齐全，产品广泛应用于各大煤矿系统和煤矿监控系统。产品在全国几十个煤业集团及矿山上使用，获得了较高的评价和赞誉。

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During the night they passed Cape King and entered Yeddo bay. The great light-house that watches the entrance shot its rays far out over the waters and beamed a kindly welcome to the strangers. Slowly they steamed onward, keeping a careful lookout for the numerous boats and junks that abound there, and watching the hundreds of lights that gleamed along the shore and dotted the sloping hill-sides. Sixty miles from[Pg 77] Cape King, they were in front of Yokohama; the engines stopped, the anchor fell, the chain rattled through the hawse-hole, and the ship was at rest, after her long journey from San Francisco. Our young adventurers were in Japan. CHAPTER VII. A HIGH-PRIEST IN FULL COSTUME. A HIGH-PRIEST IN FULL COSTUME. "Tst!" he laid a finger on my lips; "'twill not be hard; we are not going on a scout--to jump fences." He began to make actual preparations, and presently helped me draw my shirt into place again over the clean bandages, while the old man went out after fresh water. "I am a hundred times more fit to go than to stay," he suddenly resumed. "I must go. Ah, idleness, there is nothing like idleness to drive a man mad; I must have something to do--to-night--at once." I wish I knew how to give the words with his quiet intensity. Leona said nothing. There was a queer, strained look, half of admiration, on her face. But she uttered no protest, no denial. Next in order are strains. As the cutting action is the source of strains, and as the resistance offered by the cutting tools is as the length or width of the edges, it will be found in the present case that while other conditions thus far have pointed to small proportions, there is now a new one which calls for large proportions. In displacing the metal between teeth of three-quarters of an inch pitch, the cutting edge or the amount of surface acted upon is equal to a width of one inch and a half. It is true, the displacement may be small at each cut, but the strain is rather to be based upon the breadth of the acting edge than the actual displacement of metal, and we find here strains equal to the average duty of a large planing machine. This strain radiates from the cutting point as from a centre, falling on the supports of the work with a tendency to force it from the framing. Between the rack and the crank-shaft bearing, through the medium of the tool, cutter bar, connection, and crank pin, and in various directions and degrees, this strain may be followed by means of a simple diagram. Besides this cutting strain, there are none of importance; the tension of the belt, the side thrust in bearings, the strain from the angular thrust of the crank, and the end thrust of the tool, although not to be lost sight of, need not have much to do with problems of strength, proportion, and arrangement. "No, only a couple of minutes." A Hellene, and an aristocrat as well. Or, using the word in its most comprehensive sense, we may say that he was an aristocrat all round, a believer in inherent superiorities of race, sex, birth, breeding, and age. Everywhere we find him restlessly searching after the wisest, purest, best, until at last, passing beyond the limits of existence itself, words fail him to describe the absolute ineffable only good, not being and not knowledge, but creating and inspiring both. Thus it came to pass that his hopes of effecting a thorough reform did not lie in an appeal to the masses, but in the selection and198 seclusion from evil influences of a few intelligent youths. Here we may detect a remarkable divergence between him and his master. Socrates, himself a man of the people, did not like to hear the Athenians abused. If they went wrong, it was, he said, the fault of their leaders.126 But according to Plato, it was from the people themselves that corruption originally proceeded, it was they who instilled false lessons into the most intelligent minds, teaching them from their very infancy to prefer show to substance, success to merit, and pleasure to virtue; making the study of popular caprice the sure road to power, and poisoning the very sources of morality by circulating blasphemous stories about the gods—stories which represented them as weak, sensual, capricious beings, setting an example of iniquity themselves, and quite willing to pardon it in men on condition of going shares in the spoil. The poets had a great deal to do with the manufacture of these discreditable myths; and towards poets as a class Plato entertained feelings of mingled admiration and contempt. 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