廣州南洋電纜集團(tuán)有限公司

GUANGZHOU   NANYANG   CABLE  GROUP   CO.,LTD

額定電壓64/110kV交聯(lián)聚乙烯絕緣皺紋鋁套聚(氯)乙烯護(hù)套電力電纜

一、產(chǎn)品執(zhí)行標(biāo)準(zhǔn)

50/66kV: IEC 60840

64/110 kV: GB/T11017 IEC 60840

76/132 kV: AS/NZS 1429.2

二、使用條件

2.1 使用場合

適用于室內(nèi)、隧道、管道等場所敷設(shè)，可承受壓力作用，并能承受一定的牽引力，電纜具有可靠的徑向阻水功能。ZC-YJLW02、ZR-YJLW02-Z、適用于有防火要求的場所敷設(shè)，FY-YJLW02-Z、FY-YJLW03-Z適用于有防蟻要求的場所敷設(shè)；

2.2 電力系統(tǒng)額定電壓

電纜允許的額定電壓U0、U、Um值如下：

表中：U0：電纜設(shè)計(jì)用的導(dǎo)體與屏蔽或金屬屏蔽之間的額定電壓（相電壓）

U：電纜設(shè)計(jì)時(shí)用的導(dǎo)體之間的額定電壓（線電壓）

Um：設(shè)備最高電壓（使用設(shè)備的系統(tǒng)最高電壓的最大值）

2.3 頻率：49～61Hz

2.4 電纜導(dǎo)體最高額定工作溫度：90℃。

2.5 電纜導(dǎo)體短路時(shí)最高額定工作溫度（短路時(shí)間不超過5s）：250℃。

2.6系統(tǒng)中性點(diǎn)接地方式：

66kV電纜：經(jīng)消弧線圈接地。

110～220kV電纜：直接接地系統(tǒng)。

三、電纜型號(hào)和產(chǎn)品表示方法

3.1 代號(hào)表示

3.2 產(chǎn)品型號(hào)

3.3 產(chǎn)品表示方法

電纜型號(hào)依次由特性代號(hào)、絕緣、導(dǎo)體、金屬套、非金屬護(hù)套、阻水結(jié)構(gòu)的代號(hào)、額定電壓)、規(guī)格（芯數(shù)、標(biāo)稱截面）及標(biāo)準(zhǔn)編號(hào)表示

例如：

3.3.1   ZC-YJ LW 02-Z-64/110KV-1*1200

ZC……………………………………………………………阻燃C類

YJ…………………………………………………………….交聯(lián)聚乙烯絕緣（銅芯）

LW…………………………………………………………..皺紋鋁套

02……………………………………………………………聚氯乙烯護(hù)套

Z……………………………………………………………..縱向阻水

64/110KV……………………………………………….電壓等級

1*1000…………………………………………………..單芯電纜導(dǎo)體標(biāo)稱截面

產(chǎn)品表示方法：額定電壓64/110KV、單芯、銅導(dǎo)體標(biāo)稱截面1200mm2、交聯(lián)聚乙烯絕緣皺紋鋁套聚氯乙烯護(hù)套縱向阻水阻燃C類電力電纜

3.3.2  FY-YJ L LW 03-Z-127/220KV-1*1600

FY…………………………………………………….防白蟻

YJ……………………………………………………..交聯(lián)聚乙烯絕緣

L………………………………………………………鋁芯

LW……………………………………………………皺紋鋁套

03…………………………………………………….聚乙烯外護(hù)套

Z………………………………………………………縱向阻水

127/220KV………………………………………電壓等級

1*1600……………………………………………單芯電纜導(dǎo)體標(biāo)稱截面

產(chǎn)品表示方法：額定電壓127/2200KV、單芯、鋁導(dǎo)體標(biāo)稱截面1600mm2、交聯(lián)聚乙烯絕緣皺紋鋁套聚乙烯護(hù)套縱向阻水防白蟻電力電纜

四、產(chǎn)品結(jié)構(gòu)

4.1 產(chǎn)品結(jié)構(gòu)示意圖

規(guī)格型號(hào)YJLW03-64/110KV-1*1600mm2

規(guī)格型號(hào):YJLW03-64/110KV-1*1600mm2

4.2 產(chǎn)品結(jié)構(gòu)

4.2.1 導(dǎo)體

導(dǎo)體材料采用銅芯緊壓圓形導(dǎo)體或扇形分割導(dǎo)體。導(dǎo)體標(biāo)稱截面積大于或等于800mm2時(shí)，應(yīng)采用分割導(dǎo)體結(jié)構(gòu)，其結(jié)構(gòu)和直流電阻應(yīng)符合GB/Z 18890規(guī)定。

標(biāo)稱截面630mm2及以下電纜銅導(dǎo)體中的單線應(yīng)不少于53根，標(biāo)稱截面800 mm2～1600mm2電纜銅分割導(dǎo)體中的單線應(yīng)不少于170根，標(biāo)稱截面1800mm2及以上電纜銅分割導(dǎo)體中的單線應(yīng)不少于265根。

導(dǎo)體的表面應(yīng)光潔、無油污、無損傷屏蔽及絕緣的毛刺、銳邊以及凸起或斷裂的單線；

4.2.2 導(dǎo)體屏蔽和絕緣屏蔽

導(dǎo)體屏蔽應(yīng)由半導(dǎo)電包帶和擠出半導(dǎo)電層組成，其厚度近似值為2.0mm，其中擠包半導(dǎo)電層厚度近似值為1.5mm。擠包半導(dǎo)電層應(yīng)均勻地包覆在半導(dǎo)電包帶外，并牢固地粘在絕緣層上。半導(dǎo)電層與絕緣層的交界面應(yīng)光滑，無明顯絞線凸紋、尖角、顆粒、燒焦或擦傷痕跡。

4.2.3 絕緣

絕緣材料應(yīng)為進(jìn)口超凈化可交聯(lián)聚乙烯料，其性能應(yīng)符合GB/Z  18890的規(guī)定。絕緣層的標(biāo)稱厚度應(yīng)符合GB/Z 18890的規(guī)定，絕緣平均厚度與標(biāo)稱值應(yīng)為正公差，其公差不大于其標(biāo)稱值的10%+0.1mm。

4.2.4 絕緣屏蔽

絕緣屏蔽為擠包半導(dǎo)電層，其厚度近似值為1.0mm絕緣屏蔽應(yīng)均勻地包覆在絕緣表面，并牢固地粘附在絕緣層上。絕緣屏蔽的表面以及其與絕緣層的交界面應(yīng)光滑，無尖角、顆粒、燒焦或擦傷的痕跡。

4.2.5 防水層

徑向防水層宜選用金屬套，或采用綜合防水層。絕緣屏蔽與金屬套間應(yīng)有縱向阻水結(jié)構(gòu)，縱向阻水結(jié)構(gòu)應(yīng)由半導(dǎo)電阻水膨脹帶繞包而成，半導(dǎo)電阻水帶應(yīng)繞包緊密、平整、無擦傷。

4.2.6 金屬屏蔽  

金屬屏蔽可用銅絲編織帶、銅帶或金屬套等制作。

金屬屏蔽、金屬套截面應(yīng)滿足系統(tǒng)短路容量的要求。當(dāng)金屬套的截面不滿足要求時(shí)，必須通過增加金屬套厚度或增加銅線屏蔽等方式來滿足。

4.2.7 金屬套

金屬套可為鉛套或皺紋鋁套，皺紋鋁套與鉛套均應(yīng)符合GB/Z  18890的規(guī)定。鉛套應(yīng)采用符合JB/T 5268.2規(guī)定的鉛合金；

皺紋鋁套應(yīng)采用純度不小于99.6%的鋁材制造，鋁帶的伸長率應(yīng)不小于16％。焊接皺紋鋁套不得有圓周方向的焊縫，焊縫內(nèi)壁應(yīng)平整，焊縫強(qiáng)度須不小于鋁套強(qiáng)度，不得有明顯突起。

4.2.8 瀝青涂層

金屬套表面應(yīng)有電纜瀝青或熱熔膠防蝕層，涂覆在金屬套上的防腐層應(yīng)粘著良好，均勻完整，采用的電纜瀝青應(yīng)符合SH 0001的規(guī)定。

4.2.9 非金屬外護(hù)套

采用單層護(hù)套結(jié)構(gòu)時(shí)，應(yīng)采用高密度聚乙烯（HDPE）、聚氯乙烯（PVC）材料 。外護(hù)套的性能、厚度及絕緣水平應(yīng)符合GB/Z 18890的規(guī)定，表面應(yīng)有不易脫落的連續(xù)性完好的導(dǎo)電層，外護(hù)套應(yīng)有良好的防腐蝕、防蟻、防潮和阻燃性能；隧道內(nèi)電纜非金屬外護(hù)套應(yīng)采用低煙低鹵阻燃料，燃燒試驗(yàn)應(yīng)取得國家消防部門認(rèn)可的試驗(yàn)報(bào)告。

外護(hù)套需增加“退滅蟲”（“Termigon”）或“退敵蟲”防蟻?zhàn)o(hù)層時(shí)，采用雙層護(hù)套結(jié)構(gòu)，其中內(nèi)層護(hù)套應(yīng)采用高密度聚乙烯（HDPE）護(hù)套料，外層護(hù)套應(yīng)采用“退滅蟲”（“Termigon”） 或“退敵蟲”防蟻?zhàn)o(hù)套料。

內(nèi)層高密度聚乙烯護(hù)套厚度應(yīng)為3.0～3.5mm，外層防蟻?zhàn)o(hù)套厚度應(yīng)為2.0±0.1mm。內(nèi)層高密度聚乙烯宜選用紅色添加劑，以示和外層防蟻?zhàn)o(hù)套區(qū)別。防蟻?zhàn)o(hù)套應(yīng)具有良好的抗腐蝕性（尤其是螞蟻分泌的甲酸）、耐磨性和彈性。表面應(yīng)具有較高的光潔度。

五、吊裝、貯存、運(yùn)輸

5.1 吊裝電纜應(yīng)用滿足重量要求的起重機(jī)及鋼纜吊裝，嚴(yán)禁幾盤同時(shí)吊裝，嚴(yán)禁從高處扔下裝有電纜的電纜盤，嚴(yán)禁機(jī)械損傷電纜，吊裝時(shí)不得磕碰、吊斜，起吊點(diǎn)要正確，要輕吊輕放。

5.2 電纜盤不允許平放或溜放，電纜附件應(yīng)避免在露天存放，電纜及附件應(yīng)避免接觸有腐蝕性的物質(zhì)，應(yīng)采取必要的防火措施。并有專人經(jīng)常巡視，防止因意外情況造成電纜及附件受到損傷。

5.3 裝在車、船等運(yùn)輸工具上的電纜盤必須平穩(wěn)放置，采用合適方法固定（如線盤托），防止互相碰撞或翻倒。

5.4 電纜盤（不論有無托架）放置的位置要平整，不得存放于大于5度的斜面上。電纜盤側(cè)板上標(biāo)有"電纜盤滾動(dòng)方向"和"牽引頭拉出方向";，牽引頭拉出方向與放線方向一致，放線前，應(yīng)確認(rèn)無誤。

Rated voltage 64kV/110kVXLPE insulated corrugated aluminum PE(PVC) sheathed power cable products introduction

1 Product Implementation standards

50/66kV: IEC 60840

64/110 kV: GB/T11017 IEC 60840

76/132 kV: AS/NZS 1429.2

127/220 kV: GB/Z 18890 IEC 62067

2 The use of conditions:

2.1 Use Occasions

Suitable for laying indoors, in tunnel, pipeline and other places, can bear the pressure, and can bear a certain traction, the cable has a reliable radial water resistance function. ZR-YJLW02-Z, ZC-YJLW02, applicable to the installation of fire requirements of the premises, FY-YJLW03-Z, FY-YJLW02-Z suitable for the installation of the requirements of the site where the ants;

2.2Rated Voltage in Power System

Allowable rated voltage value of cable U0、U、Um is as follows:

Table:

U0：The rated voltage (phase voltage) between a conductor and a shield or a metal shield for the design of a cable.

U：Rated voltage (line voltage) between conductors used in cable design

Um：Equipment maximum voltage the maximum value of the highest voltage system using equipment

2.3 Frequency: 49 ~ 61Hz

2.4 The maximum rated operating  temperature of the cable conductor: 90.

2.5 The maximum rated operating temperature  of the short circuit of the cable conductor (short circuit time is not more  than 5S): 250.

2.6 System neutral grounding mode:

66kV cable: grounding through arc suppression coil.

110 ~ 220kV cable: direct grounding system.

Cable type and description

3.1 Code

3.2 Type

3.3 Product Description

The cable model is composed of characteristic code, insulation, conductor, metal sheath, non-metallic sheath , water blocking structure and rated voltage), specifications (core, the nominal cross-section) and standard code.

For example：

3.3.1   ZC-YJLW 02-Z-64/110KV-1*1200

ZC……………………………………………………….Flame retardant C class

YJ………………………………………………………..XLPE insulated

T………………………………………………………...copper conductor( Omission)

LW………………………………………………….…..Corrugated aluminum sheath

02……………………………………………………....PVC outer sheath

Z…………………………………………………………Longistudinal structure of Block Water

64/110K……………………………………………..Voltage grade

1*1200………………………………………..…….Single core and conductor nominal cross-section

Cable specification: Rate voltage 64/110kV,single core , copper conductor nominal cross section 1200mm2, XLPE insulated corrugated aluminum sheathed longitudinal blocking water flame retardant class C PVC sheathed power cable.

3.3.2   FY-YJ L LW 03-Z-127/220KV-1*1600

FY…………………………………………………..Anti-termites

YJ…………………………………………………...XLPE insulated

L…………………………………………………….aluminum core

LW…………………………………………..…….Corrugated aluminum sheath

03………………………………………………….PE outer sheath

Z………………………………………………..….Longitudinal water proof

127/220KV………………………………..….Voltage grade

1*1600……………………………………..….Single core and conductor nominal cross-section

Cable specification: Rate voltage 127/220kV, single core, Aluminum conductor nominal cross section 1600mm2, XLPE insulated corrugated  aluminum sheathed longitudinal water proof flame retardant PE sheathed power cable.

4 Product Structure

4.1 Product Structure Diagrams

Specification Model: YJLW03-64/110KV-1*1600mm2

Specification Model: YJLW03-64/110KV-1*1600mm2

4.2 Product Structure

4.2.1 Conductor

Conductor material using copper core tight circular conductor or sector split conductor.  When the nominal cross-sectional area of the conductor is greater than or equal  to 800mm2, the  split conductor structure should be adopted, and the structure and the DC  resistance should be in accordance with the provisions of GB/Z 18890.

Nominal cross section 630mm2 and  following copper conductor cables line shall not be less than 53 root, nominal cross-sectional area of 800 mm2 to 1600mm2 copper cable segmentation conductor line shall not be less than 170 root, the nominal section 1800mm2 and  above cable copper segmentation single conductor shall not be less than 265  root.

The surface of the conductor shall be smooth, free from oil pollution, no damage to  the shield and the insulation of the burr, sharp edge and a convex or broken  line;

4.2.2 Conductor Shielding and Insulation Shielding

The conductor shield should be composed of a semi conductive package and an extruded semi conductive layer, the thickness of which is 2.0mm, and the thickness of the extruded semi conductive layer is 1.5mm. The extruded semi conductive layer should be evenly coated on the semi conductive tape outside, and firmly adhered to the insulating layer. The semi conductive layer and the insulating layer of the interface should be smooth, no obvious strand, sharp corners, strand particles, burnt or scratches.

4.2.3 Insulation

Insulation material should be imported super purified to cross linked polyethylene material, its performance should be in accordance with the provisions of GB/Z 18890. The nominal thickness of the insulating layer shall be in accordance with the provisions of GB/Z 18890, The average thickness of the insulation and the nominal value shall be the positive tolerance, the positive tolerance is not greater than the nominal value of 10%+0.1mm.。

4.2.4 Insulation Shielding

The insulation shield is an extruded semi conductive layer, the thickness of which is similar to that of the 1.0mm insulation shield, which is evenly coated on the insulating surface and firmly adhered to the insulating layer. The surface of the insulation shielding and the interface between the insulation shield and the insulation layer should be smooth, with no sharp corners, particles, burnt or scratch marks。

4.2.5 Waterproof Layer

The radial waterproof layer is advised to use the metal sleeve, or adopt the comprehensive waterproof layer. Insulation shield and the metal sleeve should be longitudinal resistance water structure, longitudinal resistance water structure should be semi conductive water resistance expansion tape wrapped into, semi conducting water-resistant tape should be wrapped tight, smooth and free of scratches.

4.2.6 Metal Shield

The metal shielding are made by copper wire or copper tape or metal sleeve etc.

Metal shielding and metal sleeve section should meet the requirement of system short circuit capacity. When the section of the metal sleeve does not meet the requirements, it must be met by increasing the thickness of the metal sleeve or increasing the copper wire shielding.

4.2.7 Metal Sleeve

The metal sleeve may be a lead sheath or wrinkle aluminum sleeve, and the wrinkle aluminum sleeve and lead sheath shall comply with the provisions of GB/Z 18890. Lead should be used in accordance with the provisions of JB/T 5268.2 lead alloy;

Wrinkle aluminum sleeve shall be made of aluminum with a purity of not less than 99.6%, the elongation of aluminum strip  shall be not less than 16%. Welded corrugated aluminum sleeve shall not have circumferential direction of the weld, the inner wall of the weld shall be  flat, the strength of the weld shall be not less than the strength of the aluminum cover, no obvious protrusion.

4.2.8 Asphalt Coating

Set of metal surface should be cable asphalt or hot melt adhesive anti-corrosion coating, anticorrosive coating on the metal sleeve layer should be good adhesion, complete and evenly, the bitumen cable should be in accordance with the provisions of SH 0001.。

4.2.9 Non Metallic Sheath

High density polyethylene (HDPE) and polyvinyl chloride (PVC) materials should be used in the single layer jacket structure. The performance, thickness and insulation level of the outer sheath shall be in accordance with the provisions of GB/Z 18890, The surface should contain  a conductive layer which is not easy to fall off and good continuity, outer  sheath should have good anti-corrosion, anti ant, damp proof and flame retardant properties; Low smoke and low halogen resistance fuel should be used in the non metallic sheath of the cable in the tunnel. and combustion test should be achieved national fire department approval of the test report.

The outer sheath to increase the "pest control" ("Termigon") or "tuidi bug" anti termite  sheath,  should adopt double sleeve structure,. The inner sheath should use high density polyethylene (HDPE) sheath material, The outer jacket should be used "pest control" ("Termigon") or "tuidi bug" anti termite sheath material.

The inner high density polyethylene sheath thickness should be 3 ~ 3.5mm,  the outer sheath thickness should be 2 + 0.1mm. The inner high density polyethylene should  choose red additive, to show the difference between the outer layer and the anti  - ant sheath. The anti - ant sheath should have good corrosion resistance (especially formic acid), wear resistance and elasticity. Surface should have a  high degree of finish.

5 Lifting, Storage and Transportation

5.1 Hoisting cable applications meet the weight of crane and cable hoisting, prohibited  several dishes at the same time, hoisting, is strictly prohibited from throwing  height with cable of cable tray, non mechanical damage to the cables, lifting shall not bump, oblique hanging and lifting points to correct, to light hanging with care.

5.2 Cable tray does not allow flat or rolling, cable accessories should avoid storing in the open air, cables and accessories should avoid contact with corrosive substances, should take the  necessary precautions against fire. And there is a regular inspection, to prevent accidents caused by cable and accessories damage.

5.3 Installed in vehicles, ships and other means of transport of cable plate must be placed on a smooth, using appropriate fixation methods (such as line tray) to prevent colliding or overturned.

5.4 The position of the cable tray (whether or not there is no bracket) to be level, and shall not be stored on the  inclined plane of more than 5 degrees. Cable reel side superscript "cable  disc rolling direction" and "traction head out of the direction, traction head out of the direction and the line direction, placed in front of the line should be the confirmation.

南洋電纜額定電壓127/220kV交聯(lián)聚乙烯絕緣皺紋鋁套聚(氯)乙烯護(hù)套電力電纜

一、產(chǎn)品執(zhí)行標(biāo)準(zhǔn)

50/66kV: IEC 60840

64/110 kV: GB/T11017 IEC 60840

76/132 kV: AS/NZS 1429.2

127/220 kV: GB/Z 18890 IEC 62067

二、使用條件

2.1 使用場合

適用于室內(nèi)、隧道、管道等場所敷設(shè)，可承受壓力作用，并能承受一定的牽引力，電纜具有可靠的徑向阻水功能。ZC-YJLW02、ZR-YJLW02-Z適用于有防火要求的場所敷設(shè)，FY-YJLW02-Z、FY-YJLW03-Z適用于有防蟻要求的場所敷設(shè)；

2.2 電力系統(tǒng)額定電壓

電纜允許的額定電壓U0、U、Um值如下：

表中：U0：電纜設(shè)計(jì)用的導(dǎo)體與屏蔽或金屬屏蔽之間的額定電壓（相電壓）

U：電纜設(shè)計(jì)時(shí)用的導(dǎo)體之間的額定電壓（線電壓）

Um：設(shè)備最高電壓（使用設(shè)備的系統(tǒng)最高電壓的最大值）

2.3 頻率：49～61Hz

2.4 電纜導(dǎo)體最高額定工作溫度：90℃。

2.5 電纜導(dǎo)體短路時(shí)最高額定工作溫度（短路時(shí)間不超過5s）：250℃。

2.6系統(tǒng)中性點(diǎn)接地方式：

66kV電纜：經(jīng)消弧線圈接地。

110～220kV電纜：直接接地系統(tǒng)。

三、電纜型號(hào)和產(chǎn)品表示方法

3.1 代號(hào)表示

3.2 產(chǎn)品型號(hào)

3.3 產(chǎn)品表示方法

電纜型號(hào)依次由特性代號(hào)、絕緣、導(dǎo)體、金屬套、非金屬護(hù)套、阻水結(jié)構(gòu)的代號(hào)、額定電壓)、規(guī)格（芯數(shù)、標(biāo)稱截面）及標(biāo)準(zhǔn)編號(hào)表示

例如：

3.3.1   ZC-YJ LW 02-Z-64/110KV-1*1200

ZC……………………………………………………阻燃C類

YJ…………………………………………………….交聯(lián)聚乙烯絕緣（銅芯）

LW…………………………………………………..皺紋鋁套

02…………………………………………………..聚氯乙烯護(hù)套

Z…………………………………………………….縱向阻水

64/110K………………………………………...電壓等級

1*1200…………………………………………..單芯電纜導(dǎo)體標(biāo)稱截面

產(chǎn)品表示方法：額定電壓64/110KV、單芯、銅導(dǎo)體標(biāo)稱截面1200mm2、交聯(lián)聚乙烯絕緣皺紋鋁套聚氯乙烯護(hù)套縱向阻水阻燃C類電力電纜

3.3.2   FY-YJ L LW 03-Z-127/220KV-1*1600

FY…………………………………………………….防白蟻

YJ……………………………………………………..交聯(lián)聚乙烯絕緣

L………………………………………………………鋁芯

LW……………………………………………………皺紋鋁套

03…………………………………………………….聚乙烯外護(hù)套

Z………………………………………………………縱向阻水

127/220KV………………………………………電壓等級

1*1600……………………………………………單芯電纜導(dǎo)體標(biāo)稱截面

產(chǎn)品表示方法：額定電壓127/2200KV、單芯、鋁導(dǎo)體標(biāo)稱截面1600mm2、交聯(lián)聚乙烯絕緣皺紋鋁套聚乙烯護(hù)套縱向阻水防白蟻電力電纜

四、產(chǎn)品結(jié)構(gòu)

4.1 產(chǎn)品結(jié)構(gòu)示意圖

規(guī)格型號(hào): YJLW03-127/220KV-1*2500mm2

規(guī)格型號(hào): YJLW03-127/220KV-1*1600mm2

4.2 產(chǎn)品結(jié)構(gòu)

4.2.1 導(dǎo)體

導(dǎo)體材料采用銅芯緊壓圓形導(dǎo)體或扇形分割導(dǎo)體。導(dǎo)體標(biāo)稱截面積大于或等于800mm2時(shí)，應(yīng)采用分割導(dǎo)體結(jié)構(gòu)，其結(jié)構(gòu)和直流電阻應(yīng)符合GB/Z 18890規(guī)定。

標(biāo)稱截面630mm2及以下電纜銅導(dǎo)體中的單線應(yīng)不少于53根，標(biāo)稱截面800 mm2～1600mm2電纜銅分割導(dǎo)體中的單線應(yīng)不少于170根，標(biāo)稱截面1800mm2及以上電纜銅分割導(dǎo)體中的單線應(yīng)不少于265根。

導(dǎo)體的表面應(yīng)光潔、無油污、無損傷屏蔽及絕緣的毛刺、銳邊以及凸起或斷裂的單線；

4.2.2 導(dǎo)體屏蔽和絕緣屏蔽

導(dǎo)體屏蔽應(yīng)由半導(dǎo)電包帶和擠出半導(dǎo)電層組成，其厚度近似值為2.0mm，其中擠包半導(dǎo)電層厚度近似值為1.5mm。擠包半導(dǎo)電層應(yīng)均勻地包覆在半導(dǎo)電包帶外，并牢固地粘在絕緣層上。半導(dǎo)電層與絕緣層的交界面應(yīng)光滑，無明顯絞線凸紋、尖角、顆粒、燒焦或擦傷痕跡。

4.2.3 絕緣

絕緣材料應(yīng)為進(jìn)口超凈化可交聯(lián)聚乙烯料，其性能應(yīng)符合GB/Z  18890的規(guī)定。絕緣層的標(biāo)稱厚度應(yīng)符合GB/Z 18890的規(guī)定，絕緣平均厚度與標(biāo)稱值應(yīng)為正公差，其公差不大于其標(biāo)稱值的10%+0.1mm。

4.2.4 絕緣屏蔽

絕緣屏蔽為擠包半導(dǎo)電層，其厚度近似值為1.0mm絕緣屏蔽應(yīng)均勻地包覆在絕緣表面，并牢固地粘附在絕緣層上。絕緣屏蔽的表面以及其與絕緣層的交界面應(yīng)光滑，無尖角、顆粒、燒焦或擦傷的痕跡。

4.2.5 防水層

徑向防水層宜選用金屬套，或采用綜合防水層。絕緣屏蔽與金屬套間應(yīng)有縱向阻水結(jié)構(gòu)，縱向阻水結(jié)構(gòu)應(yīng)由半導(dǎo)電阻水膨脹帶繞包而成，半導(dǎo)電阻水帶應(yīng)繞包緊密、平整、無擦傷。

4.2.6 金屬屏蔽  

金屬屏蔽可用銅絲編織帶、銅帶或金屬套等制作。

金屬屏蔽、金屬套截面應(yīng)滿足系統(tǒng)短路容量的要求。當(dāng)金屬套的截面不滿足要求時(shí)，必須通過增加金屬套厚度或增加銅線屏蔽等方式來滿足。

4.2.7 金屬套

金屬套可為鉛套或皺紋鋁套，皺紋鋁套與鉛套均應(yīng)符合GB/Z  18890的規(guī)定。鉛套應(yīng)采用符合JB/T 5268.2規(guī)定的鉛合金；

皺紋鋁套應(yīng)采用純度不小于99.6%的鋁材制造，鋁帶的伸長率應(yīng)不小于16％。焊接皺紋鋁套不得有圓周方向的焊縫，焊縫內(nèi)壁應(yīng)平整，焊縫強(qiáng)度須不小于鋁套強(qiáng)度，不得有明顯突起。

4.2.8 瀝青涂層

金屬套表面應(yīng)有電纜瀝青或熱熔膠防蝕層，涂覆在金屬套上的防腐層應(yīng)粘著良好，均勻完整，采用的電纜瀝青應(yīng)符合SH 0001的規(guī)定。

4.2.9 非金屬外護(hù)套

采用單層護(hù)套結(jié)構(gòu)時(shí)，應(yīng)采用高密度聚乙烯（HDPE）、聚氯乙烯（PVC）材料 。外護(hù)套的性能、厚度及絕緣水平應(yīng)符合GB/Z 18890的規(guī)定，表面應(yīng)有不易脫落的連續(xù)性完好的導(dǎo)電層，外護(hù)套應(yīng)有良好的防腐蝕、防蟻、防潮和阻燃性能；隧道內(nèi)電纜非金屬外護(hù)套應(yīng)采用低煙低鹵阻燃料，燃燒試驗(yàn)應(yīng)取得國家消防部門認(rèn)可的試驗(yàn)報(bào)告。

外護(hù)套需增加“退滅蟲”（“Termigon”）或“退敵蟲”防蟻?zhàn)o(hù)層時(shí)，采用雙層護(hù)套結(jié)構(gòu)，其中內(nèi)層護(hù)套應(yīng)采用高密度聚乙烯（HDPE）護(hù)套料，外層護(hù)套應(yīng)采用“退滅蟲”（“Termigon”） 或“退敵蟲”防蟻?zhàn)o(hù)套料。

內(nèi)層高密度聚乙烯護(hù)套厚度應(yīng)為3.0～3.5mm，外層防蟻?zhàn)o(hù)套厚度應(yīng)為2.0±0.1mm。內(nèi)層高密度聚乙烯宜選用紅色添加劑，以示和外層防蟻?zhàn)o(hù)套區(qū)別。防蟻?zhàn)o(hù)套應(yīng)具有良好的抗腐蝕性（尤其是螞蟻分泌的甲酸）、耐磨性和彈性。表面應(yīng)具有較高的光潔度。

五、吊裝、貯存、運(yùn)輸

5.1 吊裝電纜應(yīng)用滿足重量要求的起重機(jī)及鋼纜吊裝，嚴(yán)禁幾盤同時(shí)吊裝，嚴(yán)禁從高處扔下裝有電纜的電纜盤，嚴(yán)禁機(jī)械損傷電纜，吊裝時(shí)不得磕碰、吊斜，起吊點(diǎn)要正確，要輕吊輕放。

5.2 電纜盤不允許平放或溜放，電纜附件應(yīng)避免在露天存放，電纜及附件應(yīng)避免接觸有腐蝕性的物質(zhì)，應(yīng)采取必要的防火措施。并有專人經(jīng)常巡視，防止因意外情況造成電纜及附件受到損傷。

5.3 裝在車、船等運(yùn)輸工具上的電纜盤必須平穩(wěn)放置，采用合適方法固定（如線盤托），防止互相碰撞或翻倒。

5.4 電纜盤（不論有無托架）放置的位置要平整，不得存放于大于5度的斜面上。電纜盤側(cè)板上標(biāo)有“電纜盤滾動(dòng)方向”和“牽引頭拉出方向”，牽引頭拉出方向與放線方向一致，放線前，應(yīng)確認(rèn)無誤。

Rated voltage 127kV/220kVXLPE insulated corrugated aluminum PE(PVC) sheathed power cable products introduction

1 Product Implementation standards

50/66kV: IEC 60840

64/110 kV: GB/T11017 IEC 60840

76/132 kV: AS/NZS 1429.2

127/220 kV: GB/Z 18890 IEC 62067

2 The use of conditions:

2.1 Use Occasions

Suitable for laying indoors, in tunnel, pipeline and other places, can bear the pressure, and can bear a certain traction, the cable has a reliable radial water resistance function. ZC-YJLW02-Z, ZC-YJLW02, applicable to the installation of fire requirements of the premises, FY-YJLW03-Z, FY-YJLW02-Z suitable for the installation of the requirements of the site where the ants;

2.2Rated Voltage in Power System

Allowable rated voltage value of cable U0、U、Um is as follows:

Table:

U0：The rated voltage (phase voltage) between a conductor and a shield or a metal shield for the design of a cable.

U: Rated voltage (line voltage) between conductors used in cable design

Um: Equipment maximum voltage the maximum value of the highest voltage system using equipment

2.3 Frequency: 49 ~ 61Hz

2.4 The maximum rated operating temperature of the cable conductor: 90.

2.5 The maximum rated operating temperature of the short circuit of the cable conductor (short circuit time is not more than 5S): 250.

2.6 System neutral grounding mode:

66kV cable: grounding through arc suppression coil.

110 ~ 220kV cable: direct grounding system.

Cable type and description

3.1 Code

3.2 Type

3.3 Product Description

The cable model is composed of characteristic code, insulation, conductor, metal sheath, non-metallic sheath , water blocking structure and rated voltage), specifications (core, the nominal cross-section) and standard code.

For example：

3.3.1   ZC-YJLW 02-Z-64/110KV-1*1200

ZC……………………………………………………….Flame retardant C class

YJ………………………………………………………..XLPE insulated

T………………………………………………………...copper conductor( Omission)

LW………………………………………………….…..Corrugated aluminum sheath

02……………………………………………………....PVC outer sheath

Z…………………………………………………………Longistudinal structure of Block Water

64/110K……………………………………………..Voltage grade

1*1200………………………………………..…….Single core and conductor nominal cross-section

Cable specification: Rate voltage 64/110kV,single core , copper conductor nominal cross section 1200mm2, XLPE insulated corrugated aluminum sheathed longitudinal blocking water flame retardant class C PVC sheathed power cable.

3.3.2   FY-YJ L LW 03-Z-127/220KV-1*1600

FY…………………………………………………..Anti-termites

YJ…………………………………………………...XLPE insulated

L…………………………………………………….aluminum core

LW…………………………………………..…….Corrugated aluminum sheath

03………………………………………………….PE outer sheath

Z………………………………………………..….Longitudinal water proof

127/220KV………………………………..….Voltage grade

1*1600……………………………………..….Single core and conductor nominal cross-section

Cable specification: Rate voltage 127/220kV, single core, Aluminum conductor nominal cross section 1600mm2, XLPE insulated corrugated  aluminum sheathed longitudinal water proof flame retardant PE sheathed power cable.

4 Product Structure

4.1 Product Structure Diagrams

Specification  Model:YJLW03-127/220KV-1*2500mm2

Specification  Model:YJLW03-127/220KV-1*1600mm2

4.2 Product Structure

4.2.1 Conductor

Conductor material using copper core tight circular conductor or sector split conductor. When the nominal cross-sectional area of the conductor is greater than or equal to 800mm2, the  split conductor structure should be adopted, and the structure and the DC  resistance should be in accordance with the provisions of GB/Z 18890.

Nominal cross section 630mm2 and following copper conductor cables line shall not be less than 53 root, nominal cross-sectional area of 800 mm2 to 1600mm2 copper cable segmentation conductor line shall not be less than 170 root, the  nominal section 1800mm2 and above cable copper segmentation single conductor shall not be less than 265  root.

The surface of the conductor shall be smooth, free from oil pollution, no damage to the shield and the insulation of the burr, sharp edge and a convex or broken  line;

4.2.2 Conductor Shielding and Insulation Shielding

The conductor shield should be composed of a semi conductive package and an extruded semi conductive layer, the thickness of which is 2.0mm, and the thickness of the extruded semi conductive layer is 1.5mm. The extruded semi conductive layer should be evenly coated on the semi conductive tape outside, and firmly adhered to the insulating layer. The semi conductive layer and the insulating layer of the interface should be smooth, no obvious strand, sharp corners, strand particles, burnt or scratches.

4.2.3 Insulation

Insulation material should be imported super purified to cross linked polyethylene material, its performance should be in accordance with the provisions of GB/Z 18890. The nominal thickness of the insulating layer shall be in accordance with the provisions of GB/Z 18890, The average thickness of the insulation and the nominal value shall be the positive tolerance, the positive tolerance is not greater than the nominal value of 10%+0.1mm.。

4.2.4 Insulation Shielding

The insulation shield is an extruded semi conductive layer, the thickness of which is similar to that of the 1.0mm insulation shield, which is evenly coated on the insulating surface and firmly adhered to the insulating layer. The surface of the insulation shielding and the interface between the insulation shield and the insulation layer should be smooth, with no sharp corners, particles, burnt or scratch marks.

4.2.5 Waterproof Layer

The radial waterproof layer is advised to use the metal sleeve, or adopt the comprehensive waterproof layer. Insulation shield and the metal sleeve should be longitudinal resistance water structure, longitudinal resistance water structure should be semi conductive water resistance expansion tape wrapped into, semi conducting water-resistant tape should be wrapped tight, smooth and free of scratches.

4.2.6 Metal Shield

The  metal shielding are made by copper wire or copper tape or metal sleeve etc..

Metal shielding and metal sleeve section should meet the requirement of system short circuit capacity. When the section of the metal sleeve does not meet the requirements, it must be met by increasing the thickness of the metal sleeve or increasing the copper wire shielding.

4.2.7 Metal Sleeve

The metal sleeve may be a lead sheath or wrinkle aluminum sleeve, and the wrinkle aluminum sleeve and lead sheath shall  comply with the provisions of GB/Z 18890. Lead should be used in accordance with the provisions of JB/T 5268.2 lead alloy;

Wrinkle aluminum sleeve shall be made of aluminum with a purity of not less than 99.6%, the elongation of aluminum strip  shall be not less than 16%. Welded corrugated aluminum sleeve shall not have circumferential direction of the weld, the inner wall of the weld shall be  flat, the strength of the weld shall be not less than the strength of the  aluminum cover, no obvious protrusion.

4.2.8 Asphalt Coating

Set of metal surface should be cable asphalt or hot melt adhesive anti-corrosion coating, anticorrosive coating on the metal sleeve layer should be good adhesion, complete and evenly, the bitumen cable should be in accordance with the provisions of SH 0001.。

4.2.9 Non Metallic Sheath

High density polyethylene (HDPE) and  polyvinyl chloride (PVC) materials should be used in the single layer jacket  structure. The performance, thickness and insulation level of the outer sheath shall  be in accordance with the provisions of GB/Z 18890, The surface should contain  a conductive layer which is not easy to fall off and good continuity, outer  sheath should have good anti-corrosion, anti ant, damp proof and flame  retardant properties; Low smoke and low halogen resistance fuel should be used  in the non metallic sheath of the cable in the tunnel. and combustion test  should be achieved national fire department approval of the test report.

The outer sheath to increase the "pest  control" ("Termigon") or "tuidi bug" anti termite  sheath,  should adopt double sleeve  structure,. The inner sheath should use high density polyethylene (HDPE) sheath  material, The outer jacket should be used "pest control" ("Termigon") or  "tuidi bug" anti termite sheath material.

The inner high density polyethylene sheath  thickness should be 3 ~ 3.5mm,  the outer sheath thickness should be 2 + 0.1mm. The inner high density polyethylene should  choose red additive, to show the difference between the outer layer and the anti  - ant sheath. The anti - ant sheath should have good corrosion resistance  (especially formic acid), wear resistance and elasticity. Surface should have a high degree of finish.

5 Lifting, Storage and Transportation

5.1  Hoisting  cable applications meet the weight of crane and cable hoisting, prohibited  several dishes at the same time, hoisting, is strictly prohibited from throwing  height with cable of cable tray, non mechanical damage to the cables, lifting  shall not bump, oblique hanging and lifting points to correct, to light hanging  with care.

5.2 Cable tray does not allow flat or  rolling, cable accessories should avoid storing in the open air, cables and  accessories should avoid contact with corrosive substances, should take the  necessary precautions against fire. And there is a regular inspection, to  prevent accidents caused by cable and accessories damage.

5.3 Installed in vehicles, ships and other means of transport of cable plate must be placed on a smooth, using appropriate fixation methods (such as line tray) to prevent colliding or overturned.

5.4 The position of the cable tray (whether or not there is no bracket) to be level, and shall not be stored on the inclined plane of more than 5 degrees. Cable reel side superscript "cable  disc rolling direction" and "traction head out of the direction, traction head out of the direction and the line direction, placed in front of the  line should be the confirmation.

南洋電纜額定電壓 500kV(Um=550kV)交聯(lián)聚乙烯絕緣皺紋鋁套聚（氯）乙烯護(hù)套電力電纜

一、 產(chǎn)品執(zhí)行標(biāo)準(zhǔn)

GB/T22078.1-2008額定電壓 500kV(Um=550kV)交聯(lián)聚乙烯絕緣電力電纜及其附件電力電纜系統(tǒng)-試驗(yàn)方法和要求

GB/T22078.2-2008額定電壓 500kV(Um=550kV)交聯(lián)聚乙烯絕緣電力電纜

GB/T22078.3-2008額定電壓 500kV(Um=550kV)交聯(lián)聚乙烯絕緣電力電纜附件

二 使用條件

2.1使用場合

2.1.1電纜導(dǎo)體最高允許溫度：正常運(yùn)行時(shí)為 90℃；短路時(shí)（最長 5s）為 250℃。

2.1.2電纜的安裝最小彎曲半徑推薦為 20  倍電纜外徑。

2.1.3電纜的使用環(huán)境主要由電纜金屬套和塑料外護(hù)套的性能確定

2.1.3.1金屬套

鉛套和皺紋鋁套除適用于一般場所外，特別適用于下列場合：

—— 鉛套電纜：腐蝕較嚴(yán)重但無硝酸、醋酸、有機(jī)質(zhì)（如泥煤）及強(qiáng)堿性腐蝕質(zhì)，且受機(jī)械力（拉力、壓力、振動(dòng)等）不大的的場所。

—— 皺紋鋁套電纜：腐蝕不嚴(yán)重和要求承受一定機(jī)械力的場所（如直接與變壓器連接，敷設(shè)在橋 梁上和豎井中等）。

2.1.3.2  塑料外護(hù)套    

—— 02 型（聚氯乙烯）外護(hù)套電纜主要適用于有一般防火要求和對外護(hù)套有一定絕緣要求的高壓電纜線路；

—— 03 型（聚乙烯）外護(hù)套電纜主要適用于對外護(hù)套絕緣要求較高的直埋敷設(shè)的高壓電纜線路。  如有必要用于隧道或豎井中時(shí)應(yīng)采取一定的阻燃防火措施。

2.2電力系統(tǒng)額定電壓

電纜允許的額定電壓U0、U、Um值如下：

表中：

U0：電纜設(shè)計(jì)用的導(dǎo)體與屏蔽或金屬屏蔽之間的額定電壓（相電壓）

U：電纜設(shè)計(jì)時(shí)用的導(dǎo)體之間的額定電壓（線電壓）

Um：設(shè)備最高電壓（使用設(shè)備的系統(tǒng)最高電壓的最大值）

三、電纜型號(hào)和產(chǎn)品表示方法

3.1 代號(hào)表示

注： 皺紋鋁護(hù)套包括擠包皺紋鋁護(hù)套和焊接皺紋鋁護(hù)套，兩種不同皺紋鋁護(hù)套的代號(hào)均為LW不作區(qū)分，但焊接皺紋鋁護(hù)套應(yīng)在產(chǎn)品名稱中明確，名稱中未說明焊接皺紋鋁護(hù)套的即為擠包皺紋鋁護(hù)套。皺紋銅護(hù)套和皺紋不銹鋼護(hù)套均為焊接金屬護(hù)套。

3.2 產(chǎn)品型號(hào)

3.3 產(chǎn)品表示方法

電纜型號(hào)依次由特性代號(hào)、絕緣、導(dǎo)體、金屬套、非金屬護(hù)套、阻水結(jié)構(gòu)的代號(hào)、額定電壓)、規(guī)格（芯數(shù)、標(biāo)稱截面）及標(biāo)準(zhǔn)編號(hào)表示

3.3.1 電纜規(guī)格

額定電壓290/500KV電纜的導(dǎo)體截面（mm2）為800、1000、1200、（1400）、1600、（1800）、2000、（2200）、2500。其中括號(hào)內(nèi)電纜規(guī)格為非優(yōu)選導(dǎo)體截面；

3.1.2 型號(hào)依次由絕緣、導(dǎo)體、金屬套、非金屬護(hù)套及阻燃特性、防白蟻、阻水結(jié)構(gòu)的代號(hào)構(gòu)成：

3.1.2.1 ZC-YJ LW 02-Z-290/500kV-1*1600

ZC…………..…………..阻燃C類

YJ………………………..交聯(lián)聚乙烯絕緣（銅芯）

LW………….…………..皺紋鋁套

02…………..…………..聚氯乙烯護(hù)套

Z…………….…………..縱向阻水

290/500kV………….電壓等級

1*1600……….單芯電纜導(dǎo)體標(biāo)稱截面

產(chǎn)品表示方法：額定電壓290/500KV、單芯、銅導(dǎo)體標(biāo)稱截面1600mm2、交聯(lián)聚乙烯絕緣皺紋鋁套聚氯乙烯護(hù)套縱向阻水阻燃C類電力電纜

3.1.2.2   FY-YJ L LW 03-Z-290/500KV-1*2500

FY…………..…………..防白蟻

YJ…………..……………交聯(lián)聚乙烯絕緣

L…………..…………….鋁芯

LW…………..………….皺紋鋁套

03…………..…………..聚乙烯外護(hù)套

Z…………..…………….縱向阻水

290/500KV…………電壓等級

1*2500…………..….單芯電纜導(dǎo)體標(biāo)稱截面

產(chǎn)品表示方法：額定電壓290/500KV、單芯、鋁導(dǎo)體標(biāo)稱截面2500mm2、交聯(lián)聚乙烯絕緣皺紋鋁套聚乙烯護(hù)套縱向阻水防白蟻電力電纜

3.1.2.3   FY-YJ L Q 03-Z-290/500KV-1*2000

FY…………..…………..防白蟻

YJ…………..……………交聯(lián)聚乙烯絕緣

L…………..…………….鋁芯

Q…………..……………鉛套

03…………..…………..聚乙烯外護(hù)套

Z…………..…………….縱向阻水

290/500KV………….電壓等級

1*2000…………..…..單芯電纜導(dǎo)體標(biāo)稱截面

產(chǎn)品表示方法：額定電壓290/500KV、單芯、鋁導(dǎo)體標(biāo)稱截面2000mm2、交聯(lián)聚乙烯絕緣鉛套聚乙烯護(hù)套縱向阻水防白蟻電力電纜

四、產(chǎn)品結(jié)構(gòu)

4.1 產(chǎn)品結(jié)構(gòu)圖

規(guī)格型號(hào): YJLW03-Z-290/500KV-1*2500mm2

規(guī)格型號(hào): FY-YJLW03-Z-290/500KV-1*2500mm2

4.2 產(chǎn)品結(jié)構(gòu)

4.2.1 導(dǎo)體

電纜導(dǎo)體材料采用銅芯緊壓圓形導(dǎo)體或扇形分割導(dǎo)體。當(dāng)導(dǎo)體標(biāo)稱截面積為800mm2時(shí)，可任意選用緊壓導(dǎo)體或分割導(dǎo)體結(jié)構(gòu)。1000mm2及以上導(dǎo)體則采用分割導(dǎo)體結(jié)構(gòu)， 導(dǎo)體的表面光潔、無油污、無毛刺、銳邊以及凸起或斷裂的單線；

當(dāng)電纜導(dǎo)體標(biāo)稱截面為800mm2時(shí)，導(dǎo)體中的單線根數(shù)不少于53，當(dāng)標(biāo)稱截面為1000mm2～1600mm2時(shí)，電纜銅分割導(dǎo)體中的單線不少于170根，標(biāo)稱截面為1800mm2及以上電纜銅分割導(dǎo)體中的單線不少于265根。

4.2.2 導(dǎo)體屏蔽

導(dǎo)體屏蔽由半導(dǎo)電包帶和擠出半導(dǎo)電層組成，其厚度近似值為2.5mm，其中擠包半導(dǎo)電層厚度近似值為2.0mm。

屏蔽用半導(dǎo)電材料采用超光滑可交聯(lián)半導(dǎo)電材料。擠包半導(dǎo)電層均勻地包覆在半導(dǎo)電包帶外，并牢固地粘在絕緣層上。半導(dǎo)電層與絕緣層的交界面光滑，無明顯絞線凸紋、尖角、顆粒、燒焦或擦傷痕跡。

4.2.3 絕緣

絕緣材料采用進(jìn)口超凈化可交聯(lián)聚乙烯料，絕緣平均厚度與標(biāo)稱值應(yīng)為正公差，其公差不大于其標(biāo)稱值的10%+0.1mm。

4.2.4 絕緣屏蔽

絕緣屏蔽為擠包半導(dǎo)電層，其厚度近似值為1.0mm。絕緣屏蔽應(yīng)與導(dǎo)體擠包屏蔽層和絕緣層一起 三層共擠。絕緣屏蔽應(yīng)均勻地包覆在絕緣表面，并牢固地粘附在絕緣層上。絕緣屏蔽的表面以及其與絕緣層的交界面應(yīng)光滑，無尖角、顆粒、燒焦或擦傷的痕跡。

4.2.5 緩沖層、縱向阻水結(jié)構(gòu)

緩沖層：在導(dǎo)體半導(dǎo)電屏蔽層外應(yīng)有緩沖層，緩沖層可采用半導(dǎo)電性材料或具有縱向阻水功能的半導(dǎo)電阻水膨脹帶繞包而成。繞包要求平整、緊實(shí)、無皺褶。

縱向阻水結(jié)構(gòu)：對電纜的金屬套內(nèi)間隙有縱向阻水要求時(shí)，絕緣屏蔽與金屬套間應(yīng)有縱向阻水結(jié)構(gòu)。

縱向阻水結(jié)構(gòu)由半導(dǎo)電阻水膨脹帶繞包而成,  半導(dǎo)電阻水帶繞包緊密、平整、無擦傷。

4.2.6 金屬屏蔽

金屬屏蔽可用銅絲編織帶、銅帶或金屬套等制作。

金屬屏蔽、金屬套截面應(yīng)滿足系統(tǒng)短路容量的要求。當(dāng)金屬套的截面不滿足要求時(shí)，必須通過增加金屬套厚度或增加銅線屏蔽等方式來滿足。

4.2.7 金屬套

金屬護(hù)套分為鉛護(hù)套和皺紋鋁護(hù)套兩種。

皺紋鋁護(hù)套采用純度不小于99.6%的鋁材制造，鋁帶的伸長率應(yīng)不小于16％。焊接皺紋鋁護(hù)套焊縫內(nèi)壁平整，焊縫強(qiáng)度須不小于鋁套強(qiáng)度，不得有明顯突起，不允許有圓周方向的焊縫。

4.2.8 瀝青涂層

瀝青涂層就是金屬套表面的瀝青或熱熔膠防蝕層。防腐層附著性好，被均勻、完整地涂覆在金屬套上；

4.2.9 非金屬外護(hù)套

外護(hù)套分為單層外護(hù)套和雙層外護(hù)套。采用單層護(hù)套結(jié)構(gòu)時(shí)，應(yīng)采用高密度聚乙烯（HDPE）、聚氯乙烯（PVC）材料 。外護(hù)套具有良好的防腐蝕、防蟻、防潮和阻燃性能；敷設(shè)于隧道內(nèi)電纜非金屬外護(hù)套應(yīng)采用低煙低鹵阻燃料，外護(hù)套表面都有不易脫落的連續(xù)性完好的導(dǎo)電層。

外護(hù)套需增加“退滅蟲”（“Termigon”）或“退敵蟲”防蟻?zhàn)o(hù)層時(shí)，采用雙層護(hù)套結(jié)構(gòu)，其中內(nèi)層護(hù)套應(yīng)采用高密度聚乙烯（HDPE）護(hù)套料，外層護(hù)套應(yīng)采用“退滅蟲”（“Termigon”） 或“退敵蟲”防蟻?zhàn)o(hù)套料。

內(nèi)層高密度聚乙烯護(hù)套厚度應(yīng)為3.0～3.5mm，外層防蟻?zhàn)o(hù)套厚度應(yīng)為2.0±0.1mm。內(nèi)層高密度聚乙烯宜選用紅色添加劑，以示和外層防蟻?zhàn)o(hù)套區(qū)別。防蟻?zhàn)o(hù)套具有良好的抗腐蝕性（尤其是螞蟻分泌的甲酸）、耐磨性和彈性。表面具有較高的光潔度。

4.2.10 石墨半導(dǎo)電層

位于外護(hù)套表面有一層以石墨半導(dǎo)電層，半導(dǎo)電層均勻地包覆在外護(hù)套上。牢固的導(dǎo)電層作為外護(hù)套耐壓試驗(yàn)時(shí)的外電極。

五、吊裝、貯存、運(yùn)輸

5.1吊裝電纜應(yīng)用滿足重量要求的起重機(jī)及鋼纜吊裝，嚴(yán)禁幾盤同時(shí)吊裝，嚴(yán)禁從高處扔下裝有電纜的電纜盤，嚴(yán)禁機(jī)械損傷電纜，吊裝時(shí)不得磕碰、吊斜，起吊點(diǎn)要正確，要輕吊輕放。

5.2  電纜盤不允許平放或溜放，電纜附件應(yīng)避免在露天存放，電纜及附件應(yīng)避免接觸有腐蝕性的物質(zhì)，應(yīng)采取必要的防火措施。并有專人經(jīng)常巡視，防止因意外情況造成電纜及附件受到損傷。

5.3  裝在車、船等運(yùn)輸工具上的電纜盤必須平穩(wěn)放置，采用合適方法固定（如線盤托），防止互相碰撞或翻倒。

5.4  電纜盤（不論有無托架）放置的位置要平整，不得存放于大于5度的斜面上。電纜盤側(cè)板上標(biāo)有“電纜盤滾動(dòng)方向”和“牽引頭拉出方向”，牽引頭拉出方向與放線方向一致，放線前，應(yīng)確認(rèn)無誤。