廣州南洋電纜集團有限公司

GUANGZHOU   NANYANG   CABLE  GROUP   CO.,LTD

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.