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隔離型(柔性)礦物絕緣電纜防火電纜

由高導(dǎo)頻率的電纜以及氧化鎂與無縫銅管保護套組成的礦物絕緣電纜有著強大的防火性能,以優(yōu)異的性能受到各領(lǐng)域的廣泛使用,是現(xiàn)代建筑工程主干線保障電力輸送必不可少的防火電纜。

柔性無金屬護套防火電纜

Type: NG-A(BTLY)

Voltage: 0.6/1kV

Features: 具有良好的機械性能,電氣性能和耐化學(xué)腐蝕性能,還具有結(jié)構(gòu)簡單,重量輕,敷設(shè)不受落差限制等優(yōu)點。

Application: 廣泛用于城市電網(wǎng)、礦山和化工廠等地方。

Product introduction

在過去15至20年來交聯(lián)聚乙烯絕緣電纜的需求迅速增長,這種類型的電纜已成為電力電纜的主要類型。

勝宇電纜積極開發(fā)和應(yīng)用交聯(lián)聚乙烯絕緣電纜zui近的制造技術(shù),并一直在不斷努力獲得更多的從事質(zhì)量穩(wěn)定,并產(chǎn)生更高電壓的交聯(lián)聚乙烯絕緣電纜(超過500千伏)。

本產(chǎn)品適用于固定敷設(shè)在交流50Hz, 額定電壓35kV及以下的電力輸配電線路上作輸送電能用。與聚氯乙烯絕緣電力電纜相比, 交聯(lián)電力電纜產(chǎn)品不僅具有優(yōu)異的電氣性能、機械性能、耐熱老化性能、耐環(huán)境應(yīng)力和耐化學(xué)腐蝕性能的能力,而且結(jié)構(gòu)簡單,重量輕,不受敷設(shè)落差限制, 長期工作溫度高(90℃)等特點。

執(zhí)行標(biāo)準(zhǔn):GB/T12706.1-2008

Type Cu、Al Specifications Core NO. Voltage
NG-A(BTLY) 2.5~6mm2 3~61芯 0.6/1kV
補充說明:

導(dǎo)體規(guī)格120mm2及以上建議選用單芯電纜,以方便敷設(shè)。

Type description exampl

  • 1.種類代號

    耐火Nnn

    隔離G

    等級A(950℃~1000℃)3小時

    布線系列B

  • 2.導(dǎo)體代號

    銅導(dǎo)體T

  • 3.絕緣代號

    云母絕緣省略

  • 4. 金屬套代號

    鋁金屬套L

    鋁合金金屬套LH

    銅金屬套T

    銅合金金屬套TH

  • 5.護套代號

    聚乙烯/聚烯烴Y

  • 為符合各地相關(guān)驗收規(guī)范,可在型號前面加上WDZAN,WDZN,NH,ZR等功能代號實際產(chǎn)品相同。

Type exampl

For Example:

隔離型(柔性)礦物絕緣電纜,額定電壓0.6/1kV,4芯,標(biāo)稱截面120mm2,表示為:

NG-A(BTLY) 0.6/1kV 4×120

隔離型(柔性)礦物絕緣電纜,額定電壓0.6/1kV,1芯,標(biāo)稱截面240mm2,表示為:

NG-A(BTLY) 0.6/1kV 1×240

可簡稱為NG-A或BTLY,又稱NG-A(BTLY)、WDZAN-BTLY、WDZAN-BTLV、BTLV、BTLYQ、BTLVQ等。

Product structure diagram

1. 導(dǎo)體:采用多股銅線絞合而成,具有良好的彎曲特性。

2. 絕緣層:采用礦物質(zhì)絕緣材質(zhì)。

3. 金屬套:采用鋁質(zhì)軟護套,經(jīng)特殊工藝加工處理,具有良好的導(dǎo)電性能、抗機械撞擊力、柔性彎曲等特性(可代替地線)。

4. 隔離套:采用交聯(lián)聚乙烯防水隔離層。

5. 隔氧層:采用Mg(OH)2或Al(OH)2礦物質(zhì)材料,具有耐高溫、防火性能。

6. 外護層:采用低煙無毒或更好更高的塑性材質(zhì),有良好的防腐蝕特性,可根據(jù)要求選擇不同標(biāo)號的材料。

Product details

敷設(shè)施工方法

1、將電纜盤放在放線架上(通常電纜盤放在樓下,將電纜提拉上去)。

2、提升用的繩索通過卷繞機與電纜相連接,開動卷繞機將電纜提升上去。

3、提升用的電纜網(wǎng)套到達房頂時,將網(wǎng)套掛在事先準(zhǔn)備好的吊鉤上。

4、對中間部位進行固定。

5、將分支線端頭與電流表或斷流器相連。

6、進行與橫向干線或主干線版的連接。


施工中注意

1、確認(rèn)預(yù)制分支部分是否能安全通過貫通孔洞;

2、采取預(yù)防措施,防止提升過程中分支部分被貫通孔洞損傷;

3、提升過程中不要對分支電纜施加張力;

4、使用提升用繩索的強度應(yīng)為電纜重量的四倍以上;

5、電纜提升完畢后,應(yīng)立即用適當(dāng)?shù)姆椒右怨潭ǎ悦怆娎|脫落受損;

6、單芯電纜禁止使用鐵質(zhì)夾具。

Examining report

Mineral Insulated Cables are used to provide circuit integrity for power and control circuits of critical equipment such as:

    1. ·Hospital operating rooms

    2. ·Air pressurisation system for stairwells

      ·Fire alarm systems

      ·Emergency power systems、Emergency lighting systems

      ·Sprinkler systems

    3. ·Public buildings e.g. theatres, cinemas, hotels, schools

  •  
    1. · Tunnels and mines

    2. · Temperature measurement devices; RTD's, thermocouples

      · Close to or inside industrial foundries, kilns

      · Hazardous areas where flammable gases may be present

    3. · Transport hubs - railway stations, airports etc

MI cable is the best choice for building fire safety line laying

BS 6387: Cable Fire Test

Fire Performance BS 6387 Performance Requirements for Cables Required to Maintain Circuit Integrity under Fire Conditions.This standard details the following tests to categorise cables according to their fire withstand capabilities.

  • Resistance to Fire

    The cable is tested by exposure to gas burner flames while passing a current at its rated voltage.

    Four survival categories are defined in the Performance Table below.

    • Symbol condition
    • A650°C for 3 hours
    • B750°C for 3 hours
    • C 950°C for 3 hours
    • D950°C for 20 minutes

  • Resistance to Fire with Water

    A new sample of cable is exposed to flames at 650°C for 15 minutes whilst passing a current at the rated voltage and then the spray is turned on to give exposure to both fire and water for a further 15 minutes.

    The grade results are as follows:

    • Symbolcondition
    • W650°C for 15 minutes

  • Resistance to Fire with Mechanical Shock

    The final requirement is mechanical shock damage. A fresh sample of cable is mounted on a backing panel in an S-bend and is exposed to flames whilst the backing panel is struck with a solid steel bar the same diameter as the cable under test every 30 seconds for 15 minutes.

    Whilst the cable has been exposed to temperatures as defined in the Performance Table below.

    • Symbolcondition
    • X650°C for 15 minutes
    • Y750°C for 15 minutes
    • Z950°C for 15 minutes

Beyond The Standard

Sunwin MI Cable can easily comply and withstand the most onerous categories of C, W and Z using one single Cable Sample

Product support

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