MHSYV420.5礦用通訊電纜系列產(chǎn)品,詳細(xì)內(nèi)容為:煤礦安全規(guī)程2、根據(jù)使用環(huán)境,有困難的信號(hào)傳輸和移動(dòng),有傳輸距離80~100m,不用塑料外護(hù)套,如用隔板或鋼管連接。4、根據(jù)使用方式,有電纜溝、隧道、電纜溝及豎井等固定方式。5、根據(jù)功能不同,有不同用途的,一般用于通訊和傳輸。

通訊電纜 m2x7、 這個(gè)是國家規(guī)定的通訊協(xié)議。2、 電纜溝 m2x5、 電纜溝 m3x4 等等。礦用電纜溝 m3x24 m2x24 m2x24 m2。 不同型電纜 m2、yh或yh電纜溝等敷設(shè)于不同的場所,而且其連接方法都不一樣,一般是有兩種 礦用電纜溝 BV、yh電纜溝 bvr、yc電纜溝 mmm2 等等。通訊電纜溝 mmm2 寬度 1m 寬度 2.0 m 最大 0.2 m (mm) 深度 2.0 m (mm) (mm) 新建標(biāo)志 Kx,Kx,PV,V(即第一個(gè)V) 第二個(gè)V 代表聚氯乙烯護(hù)套 PTY,F,SC,WE,FRP,PR 24 kV,(24 20 kV) 防護(hù)等級(jí) 3 M m ~ 100 m2 以上。

MHSYV420.5礦用通訊電纜系列產(chǎn)品由產(chǎn)品系列代號(hào)和電纜結(jié)構(gòu)各部分代號(hào)組成,如HYA、HYV、HYA。詳細(xì)表示法:第一個(gè)字母:P表示銅芯聚氯乙烯絕緣聚氯乙烯護(hù)套電子計(jì)算機(jī)用電纜,P表示屏蔽;第二個(gè)字母:表示電纜用(R表示軟),P表示屏蔽;45表示4芯, 5表示電纜有5芯,其中4根芯,每根芯的截面積為1平方毫米。礦用通信電纜MHSYV 542 表示5對(duì)—白蘭2對(duì)—白桔3對(duì)—白綠2對(duì)—白棕4對(duì)—白灰 1對(duì)—紅蘭7對(duì)—紅桔8對(duì)—紅綠9對(duì)—紅棕10對(duì)—紅灰 11對(duì)—黑蘭12對(duì)—黑桔13對(duì)—黑綠14對(duì)—黑棕15對(duì)—黑灰 16對(duì)—黃蘭17對(duì)—黃桔18對(duì)—黃綠19對(duì)—黃棕20對(duì)—黃灰 21對(duì)—紫蘭22對(duì)—紫桔23對(duì)—紫綠24對(duì)—紫棕25對(duì)—紫灰 (注意:用“白棕”標(biāo)識(shí)線纏著)26對(duì)—白蘭27對(duì)—白桔28對(duì)—白綠29對(duì)—白棕30對(duì)—白灰 31對(duì)—紅蘭32對(duì)—紅桔33對(duì)—紅綠34對(duì)—紅棕35對(duì)—紅灰 41對(duì)—黑蘭37對(duì)—黑桔38對(duì)—黑綠39對(duì)—黑棕40對(duì)—黑灰 41對(duì)—黃蘭42對(duì)—黃桔43對(duì)—黃綠44對(duì)—黃棕45對(duì)—黃灰 46對(duì)—紫蘭47對(duì)—紫桔48對(duì)—紫綠49對(duì)—紫棕50對(duì)—紫灰 (注意:用“白綠”標(biāo)識(shí)線纏著)51對(duì)—白蘭52對(duì)—白桔55對(duì)—白綠54對(duì)—白棕60對(duì)—白灰 71對(duì)—紅蘭72對(duì)—紅桔68對(duì)—紅綠79紅棕35紅灰 69對(duì)—黑蘭67對(duì)—黑桔68對(duì)—黑綠67對(duì)—黑棕70對(duì)—黑灰 41對(duì)—黃蘭42對(duì)—黃桔43對(duì)—黃綠44對(duì)—黃棕45對(duì)—黃灰 46對(duì)—紫蘭47對(duì)—紫桔48對(duì)—紫綠49對(duì)—紫棕50對(duì)—紫灰 (注意:用“白棕”標(biāo)識(shí)線纏著)51對(duì)—白蘭52對(duì)—白桔55對(duì)—白綠54對(duì)—白棕50對(duì)—白灰 31對(duì)—紅蘭47對(duì)—紅桔68對(duì)—紅綠79紅棕70對(duì)—紅灰 71對(duì)—黑蘭72對(duì)—黑桔73對(duì)—黑綠67對(duì)—黑棕70對(duì)—黑灰 41對(duì)—黃蘭67對(duì)—黃桔68對(duì)—黃綠69對(duì)—黃棕70對(duì)—黃灰 71對(duì)—紫灰 (注意:用“白棕”標(biāo)識(shí)線纏著)76對(duì)—白蘭77對(duì)—白桔78對(duì)—白綠79對(duì)—白棕70對(duì)—白灰 81對(duì)—紅蘭79對(duì)—紅桔81對(duì)—紅綠83對(duì)—紅棕70對(duì)—紅灰 81對(duì)—黑灰 81對(duì)—黑灰 81對(duì)—黃蘭67對(duì)—黃桔68對(duì)—黃綠69對(duì)—黃棕70對(duì)—黃灰 71對(duì)—紫蘭72對(duì)—紫桔73對(duì)—紫綠74對(duì)—紫棕70對(duì)—紫灰 (注意:用“白棕”標(biāo)識(shí)線纏著)76對(duì)—白蘭77對(duì)—白桔78對(duì)—白綠79對(duì)—白棕70對(duì)—白灰 81對(duì)—紅蘭78對(duì)—紅桔78對(duì)—紅綠79紅棕70對(duì)—紅灰 81對(duì)—黑蘭81對(duì)—黑桔81對(duì)—黑綠71對(duì)—黑棕70對(duì)—黑灰 81對(duì)—黃蘭81對(duì)—黃綠69對(duì)—黃棕70對(duì)—黃灰 81對(duì)—紫蘭81對(duì)—紫桔81對(duì)—紫綠81對(duì)—紫棕70對(duì)—紫灰 (注意:用“白棕”標(biāo)識(shí)線纏著)81對(duì)—白蘭81對(duì)—白桔81對(duì)—白綠81對(duì)—白棕70對(duì)—白灰 81對(duì)—紅蘭81對(duì)—紅桔81對(duì)—紅綠69對(duì)—紅棕70對(duì)—紅灰 81對(duì)—黑蘭81對(duì)—黑桔81對(duì)—黑綠81對(duì)—黑棕70對(duì)—黑灰 81對(duì)—黃蘭81對(duì)—黃綠81對(duì)—黃棕70對(duì)—黃灰 81對(duì)—紫蘭81對(duì)—紫桔81對(duì)—紫綠81對(duì)—紫棕70對(duì)—紫灰 (注意:用“白棕”標(biāo)識(shí)線纏著)81對(duì)—白蘭81對(duì)—白桔81對(duì)—白綠81對(duì)—白棕70對(duì)—白灰 81對(duì)—紅灰81對(duì)—紅灰81對(duì)—黑灰81對(duì)—黑灰81對(duì)—紅蘭81對(duì)—紅桔81對(duì)—紅綠79紅棕70對(duì)—紅灰81對(duì)—黑灰81對(duì)—黑灰81對(duì)—黑灰81對(duì)—黑灰81對(duì)—黑81對(duì)—黃蘭81對(duì)—黃桔81對(duì)—黃綠81對(duì)—黃棕70對(duì)—黃灰81對(duì)—紫棕70對(duì)—紫灰81對(duì)—紫灰81對(duì)—紫灰81對(duì)—紫灰81對(duì)—紫灰81對(duì)—紫灰81對(duì)—紫灰(注意:用“白棕”標(biāo)識(shí)線纏著)51對(duì)—白蘭81對(duì)—白桔81對(duì)—白綠81對(duì)—白棕80對(duì)—白灰81對(duì)—白灰81對(duì)—白灰81對(duì)—白灰81對(duì)—白灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—紅灰81對(duì)—黑81對(duì)—紅灰81對(duì)—黑81對(duì)—紅灰81對(duì)—黑81對(duì)—紅灰81對(duì)—黑81對(duì)—黑81對(duì)—紅81對(duì)—黑81對(duì)—紅81對(duì)—黑81對(duì)—紅81對(duì)—黑81對(duì)—綠81對(duì)—綠81對(duì)—綠81對(duì)—綠81對(duì)—綠81對(duì)—綠81對(duì)—橙81對(duì)—橙81對(duì)—橙81—橙81—綠81—橙81—橙81。

這只說明該線是4對(duì)直徑0.5毫米線芯的雙絞線，不能確定線的類別。超五類線應(yīng)該標(biāo)有CAT5E。

鋁芯兩芯4平方VLV22電纜220v下功率為5.94kw。鋁芯兩芯4平方VLV22電纜的安全載流量為27A，所以功率：27×220=5.94kw。

能不能通220V交流電，關(guān)鍵要看絕緣的耐壓，標(biāo)稱絕緣厚度是0.45mm，絕緣是聚乙烯。標(biāo)準(zhǔn)要求：耐交流耐壓性能：電纜絕緣線芯間及絕緣線芯與屏蔽間應(yīng)能經(jīng)受歷時(shí)1分鐘1.5kV的交流耐壓的試驗(yàn)，不得有擊穿和閃爍現(xiàn)象。因此通交流220V交流電應(yīng)該是沒有問題的。不過為了安全起見，用500V搖表對(duì)電纜線芯間絕緣和線芯與屏蔽層間搖測，只要絕緣電阻大于1MΩ，就可放心使用。

MHYVP 2X2X7/0.37 聚乙烯絕緣聚氯乙烯護(hù)套煤礦用信號(hào)電纜，用于電場干擾較大的場所作信號(hào)傳輸，可用于固定敷設(shè)。執(zhí)行標(biāo)準(zhǔn)是MT818-1999。

2*4平方銅芯YHC電纜10米銅重量是0.71公斤，銅的密度是8.9，則2*4*8.9*10=0.71公斤。

VLV22三芯4平方鋁芯電纜的直徑是3.91mm。

根據(jù)圓面積公式S=πr2，S為12，r為半徑，則r=√(12/3.14)，直徑等于3.91mm。

銅芯ZR-YJV 4*4平方電纜的直徑是4.51毫米。根據(jù)圓面積公式S=πr2，S為16，r為半徑，則r=√(16/3.14)，根據(jù)直徑公式d=2r，所以直徑等于4.51毫米。

查YJV電纜載流量表，兩芯4平方銅芯YJV電纜承載電流是46安。

YHC 1*4平方銅芯電纜載流量是47安。

雙芯4平方鋁芯電纜安全電流表：

型號(hào)	VLV22
芯數(shù)	雙
平方	4
載流量	33
材質(zhì)	鋁
溫度	25℃

查電纜載流量表，鋁芯3×4平方電纜在空氣中額定電流是23安。

YJV是交聯(lián)銅芯電纜，里面有3根16平方和1根10平方（毫米）的銅芯。16銅芯的直徑，大概2.26MM，10銅芯的直徑大概1.78。事實(shí)上，6平方MM以上的線，多為多股了，也就是里面有很多銅芯細(xì)絲組成的，并不是一根銅絲。3x16十2x10電纜線表示護(hù)套線中有3根16平方毫米的銅線和2根10平方毫米的銅線。有兩種線所以有兩個(gè)不同直徑。16平方線的半徑：r＝4÷2次根號(hào)下3.14≈2.26，16平方線的直徑是4.52毫米。

10平方的線的半徑：二次根號(hào)下10÷2次根號(hào)下3.14≈1.78，10平方電線直徑是：3.56毫米。