广州南洋电缆集团有限公司

GUANGZHOU   NANYANG   CABLE  GROUP   CO.,LTD

Rated voltage 500kV (Um=550kV) XLPE insulated corrugated aluminum PE (PVC) sheathed power cable products introduction

1 Product Implementation standards

1.1  GB/T22078.1-2008 Rated voltage of 500kV (Um=550kV) XLPE power cable and power cable accessories systems - Test methods and requirements

1.2  GB/T22078.2-2008 Rated voltage of 500kV (Um=550kV) XLPE insulated power cable

1.3  GB/T22078.3-2008 Rated voltage of 500kV (Um=550kV) XLPE insulated power cable accessories

2 The use of conditions:

2.1 Use occasions

2.1.1 The maximum allowable temperature of the cable conductor: when the normal operation is 90 degrees C; short circuit (the longest 5S) is 250.

2.1.2 The minimum bending radius of the cable is recommended to 20 times the diameter of the cable.

2.1.3 The application environment of the cable is mainly determined by the performance of the cable metal sheath and the plastic outer sheath

2.1.3.1 Metal sleeve

The lead sheath cable and the corrugated aluminum sheath cable are suitable for general occasions, especially for the following occasions:

-Lead sheathed cable: corrosion is more serious but not nitric acid, acetic acid, organic matter (such as coal) and strong alkaline corrosion, and the mechanical force (tension, pressure, vibration and other small places).

-corrugated aluminum sheath cable: corrosion is not serious and requires a certain mechanical strength of the premises (such as direct connection with the transformer, laying on the bridge and shaft medium).

2.1.3.2 Outer  sheath of plastic

-type 02 (PVC) outer sheath cable is mainly suitable for the high voltage cable line with the general fire  protection requirement and a certain insulation requirement for the outer sheath;

-type 03 (PE) outer sheathed cables are mainly suitable for high voltage cable lines with high external  insulation requirements directly buried.

2.2 Rated 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

3 Cable type and description

3.1 Code

Note: Corrugated aluminum sheath including extruded corrugated aluminum sheath and welding corrugated aluminum sheath, two kinds of corrugated aluminum sheath code is LW, does not distinguish, but the welding corrugated aluminum sheath should be clear in the product name, the name of the welding corrugated aluminum sheath is extruded corrugated aluminum sheath. Corrugated copper sheath and corrugated stainless steel sheath are all welded metal sheath.。

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.

3.3.1 Cable Specifications

The conductor cross section (mm²) of rated voltage 290/500kV cable is 800, 1000, 1200, (1400), 1600, (1800), 2000, (2200), 2500, The cable specifications in the brackets are non preferred conductor cross sections;

3.1.2 Model followed by the insulation, conductors, metal cover, non-metallic outer sheath and fire-retardant characteristics, Anti-termites , water blocking structure of the cable constitute;

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

ZC…………..…………..Flame retardant

YJ…………..……………XLPE insulated(Copper)

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

02…………..…………..PVC outer sheath

Z…………..…………….longitudinal  Water blocking

290/500kV………….Voltage grade

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

Cable specification: Rate voltage 290/500kV, single core, copper conductor nominal cross section 1600mm2, XLPE insulated corrugated aluminum sheathed longitudinal blocking water flame retardant class C PVC sheathed power cable.

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

FY………Anti-termites

YJ………XLPE insulated

L………..aluminum core

LW……..Corrugated aluminum sheath

03………PE outer sheath

Z………...Longitudinal water proof

290/500KV………….Voltage grade

1*2500………Single core and conductor nominal cross-section

Cable specification: Rate voltage 290/500kV, single core, Aluminum conductor nominal cross section 2500mm2, XLPE insulated corrugated aluminum sheathed longitudinal water blocking termitproof PE  sheathed power cable.

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

FY………Anti-termites

YJ………XLPE insulated

L………..aluminum core

Q……….lead sheathed

03………PE outer sheath

Z…………Longitudinal water proof

290/500KV……Voltage grade

1*2000……Single core and conductor nominal cross-section

Cable specification: Rate voltage 290/500kV, single core, Aluminum conductor nominal cross section 2000mm2, XLPE insulated lead sheathed longitudinal water blocking termitproof PE sheathed power cable.

4 Product Structure

4.1 Product Structure Diagrams

Specification Model: YJLW03-Z-290/500KV-1*2500mm²

Specification Model: FY-YJLW03-Z-290/500KV-1*2500mm²