Power cables 66kV to 220kV - storage.googleapis.com€¦ · Evergreen, beginning with research and develop-ment. Centuray has been adhering to the road of R & D innovation, the company

Power cables 66kV to 220kV

www.centuray.com

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We call "green" energy. It symbolizes civilization、 change and commitment; We

promote "low-carbon life" ,dedicated to the pursuit of sustainable development

purposes trail. Providing dean energy and more intelligent electrical systems

solution for human society is our constant pursuit for many years.

www.centuray.com1 www.centuray.com 2

Product Field

Centuray-a high-tech company integrating high-end products R&D, reliable technical service. We adhere to the humanized

science and technology information overall solution and provide you efficient, energy-saving, environmental protection and

safety guarantee in the field of power technology and rail transportation.

Power cables

4

Drawing machine, Niehoff, GermanyStranding machine, Mail, AustriaCabling machine, Pourtier, France VCV extrusion line for XLPE cables up to 500kV, Troester， GermanyCCV extrusion line for XLPE cables up to 220kV , Troester, GermanyCCV extrusion line for XLPE cables up to 400kV , Nokia-Maillefer, FinlandSteel wire & belt armoring machine, Ceeco, CanadaCopper wire & strip shielding machine, Ceeco, CanadaDouble-layer extrusion line, Troester, GermanyDouble-layer(nylon)extrusion line, Troester，Germany

Production Equipments

Full range equipments from Europe

Drawing machine, Niehoff, Germany

Cabling machine, Pourtier, France

Stranding machine, Mail, Austria

CCV extrusion line for XLPE cables up to 400kV, Nokia-Maillefer, Finland

VCV extrusion line for XLPE cables up to 500kV , Troester,Germany

We have introduced advanced production equipment of wire and cable. Our capacity has already been at the leading level of China’s wire and cable industr y and it has laid a solid foundation for the EHV cable research, development and improvement of product quality.

Evergreen, beginning with research and develop-

ment. Centuray has been adhering to the road of

R & D innovation, the company has set up R & D

center, joint laboratory, technical service

center...... At the same time, the company also

increased R & D investment and power: hire

outstanding overseas engineers, establishing

cooperation projects, and the expansion of the

product range, providing the required system

solutions for customers.

Originate in Europe and serve China. The

company has excellent German technology and

manufacturing, but also has a specialized talent

echelon, dedicated to research, design, technol-

ogy, production and after-sales service.

Scientific Research and Talents

Troester double-layer sheathing line，Germany

Metal sheathing line

Power cables


On-line Resistance and cross-section measurer AESA,Switzerland

ARL3460Direct Reading Spectrometer - ARL,Switzerland

On-line Measuring Instrument - SIKORA,Germany

350kV Partial Discharge Detection System - HAEFELY,Switzerland

750kV Partial Discharge Detection System - HAEFELY,Switzerland

T h e I S O 9 0 0 0 q u a l i t y m a n a g e m e n t s y s t e m

h a s a l r e a d y b e e n i n t r o d u c e d i n t o o u r

c o m p a n y w h e n t h e c o m p a n y w a s f o u n d e d .

W e h a v e b e e n s u c c e s s f u l l y c e r t i fi e d b y I S O

9 0 0 1 , I S O 1 4 0 0 1 , O H S A S 1 8 0 0 1 , a n d

o b t a i n e d t h e c e r t i fi c a t i o n f r o m N a t i o n a l

G r i d s . W e e n s u r e t h a t o u r p r o d u c t i o n a n d

t e s t p r o c e d u r e a r e i n s t r i c t a c c o r d a n c e w i t h

t h e q u a l i t y m a n a g e m e n t s y s t e m . W e ’v e g o t

t h e Ty p e Te s t c e r t i fi c a t i o n f r o m K E M A i n

2 0 0 1 , a n d w e r e a l s o a u t h e n t i c a t e d b y t h e

i n t e r n a t i o n a l a u t h o r i t y V D E i n 2 0 0 5 .

Q u a l i t y M a n a g e m e n t S y s t e m c o v e r s a l l t h e

c o n t e n t s o f I S O 9 0 0 1 , c o n s i s t i n g i m p l e m e n -

t a t i o n a n d s u p p o r t i n g p r o c e s s f o r c a b l e s

a n d O C S w i r e s .

Quality Management System

Impulse Voltage Test - HAEFELY,Switzerland

Test Capability

W e h a v e t h e d o m e s t i c w i r e a n d c a b l e

i n d u s t r y ’s h i g h e s t v o l t a g e l e v e l a n d t h e

7 5 0 k V - c l a s s t e s t i n g c e n t e r o f c o m p l e t e l y

p i l o t p r o j e c t s , a n d h a v e b u i l t t h e p r o v i n -

c i a l i n s p e c t i o n s t a t i o n o f t h e w i r e a n d

c a b l e i n H e b e i . S o p h i s t i c a t e d t e s t i n g

e q u i p m e n t e n s u r e s t h e n e e d o f a h i g h

v o l t a g e c a b l e t e s t a n d t h e R & D o f t e c h n o l -

o g y.

3 Coordinate Measuring device - WERTH,Germany

Schering Bridge - TETTEX,Switzerland High-voltage Electrical Products Monitoring Station of Hebei Provincl Located in Our Company

4www.centuray.com5 www.centuray.com 6

Power cables

The sketch map of extra-high

Voltage cable VCV line

Technolog y and Processes

of HV&EHV Power Cables

Drawing

Stranding

Compact Conductor Segmental Conductor

Insulation

Testing

Shipping

Pay-off stand Capstan Accumulator

Caterpiller

Caterpiller

Caterpiller

Guide Roller

Guide Roller

Wheel Capstan

Conductor preheaterTriple-extrusion

Self-gravity Feeling Device

Eccentricity Gage

Curing Tube

Cooling Tube

Cooling Tube

Relaxation EquipmentEnd Seal

Heat Exchanger

Heat Exchanger

Take-up Stand

Nitrogen Equipment

Pressure wheel

Our products enjoy popularities among State Grids, power generation and distribution compa-nies. In recent years, our highly reputed products are widely employed in the area of nuclear power, wind power, petrochemical industry and electrified railways, excessively exporting to Europe, Southeast Asia, Australia, Africa and other regions around the world, we have become the first class supplier of British &Scottish Power Companies which have the most stringent quality requirements around Europe.

Market Application

nkt cables Group has its tradition of sharing technolog y among 13 factories around the world. NCL is also benefitted a lot from the close collaboration. The engineers from other nkt branches regularly come to China for transferring the technical information. Al l the key technical staffs have received professional training from the headquarter in Germany.

NCL is able to offer the best solution of cable system according to specific requests from our customers. For example, we wil l assist our customer in type selection, cable design, production, installation, inspection and maintenance ser vices. We are able to offer flexible cable solutions, in base of specific requirements such as extra long length, large size, corrugated copper and stainless steel sheath, low-smoking or halogen-free and so on. We can also produce waterproof, freezing-resistant type, non-toxic,nylon-sheathed,termite-& rodent-resistant cables. . Furthermore, our power cables can be ma-nufactured in accordance with any international or regional standards, such as BS, AS/NZS, IEC, HD, et

The best solution with the most advanced technology

Raw Material

Stress Relaxation

Longitudinal water blocking layer

Metallic Sheath/Metallic Screen

Oversheath+Outer Conductive Coating


Power cables

Environment for use of the cable

T y p e D e s c r i p t i o n A p p l i c a t i o n

C u c o r e

A l c o r e

YJ A 0 2 YJ L A 0 2

YJ A 0 3 YJ L A 0 3

YJ L W 0 2 YJ L L W 0 2

YJ L W 0 3 YJ L L W 0 3

YJ L W 0 2 - Z YJLLW02-Z

YJ L W 0 3 - Z YJLLW03-Z

X L P E i n s u l a t e d C o p p e r w i r e s s c r e e n ,m e t a l l i c & p l a s t i c c o m p o u n d w a t e rp r o o f l a y e r , P V C s h e a t h p o w e r c a b l e .

X L P E i n s u l a t e d C o p p e r w i r e s s c r e e n , m e t a l l i c & p l a s t i c c o m p o u n d w a t e r p r o o f l a y e r , P E s h e a t h p o w e r c a b l e .

X L P E i n s u l a t e d c o r r u g a t e d A l u m i n i u m s h e a t h e d P V C o v e r s h e a t h p o w e r c a b l e .

X L P E i n s u l a t e d c o r r u g a t e d A l u m i n i u m s h e a t h e d P E o v e r s h e a t h p o w e r c a b l e .

X L P E i n s u l a t e d c o r r u g a t e d A l u m i n i u m s h e a t h e d P V C o v e r s h e a t h v e r t i c a l w a t e r r e s i s t a n t p o w e r c a b l e .

X L P E i n s u l a t e d c o r r u g a t e d A l u m i n i u m s h e a t h e d P E o v e r s h e a t h v e r t i c a l w a t e rr e s i s t a n t p o w e r c a b l e .

F o r l a y i n g i n t u n n e l o r d u c t , u s e d i n d a m p e n v i r o n m e n t o r t h e p l a c e w h e r e w a t e r l e v e l i s c o m p a r a t i v e l y h i g h , a n d a b l e t o b e a r m o d e r a t e p r e s s u r e .

F o r l a y i n g i n t u n n e l o r d u c t , u s e d i n d a m p e n v i r o n m e n t o r t h e p l a c e w h e r e w a t e r l e v e l i s c o m p a r a t i v e l y h i g h , a n d a b l e t o b e a r m o d e r a t e p r e s s u r e .

A b l e t o b e u s e d u n d e r l o w e r t e m p e r a t u r e .

A b l e t o b e u s e d u n d e r l o w e r t e m p e r a t u r e .

F o r l a y i n g i n t u n n e l o r d u c t , u n a b l e t o b e a r p u l l i n g f o r c e o f p r e s s u r e , c o m m o nw e t s i t e i n d i r e c t l y c o n t a c t w a t e r .

D i t t o , a n d h a s a b e t t e r p r o p e r t y o f d a m p p r o o f .

Characteristices for useLong-term operating temperature for cable conductor is 90 C.

The highest temperature of the conductor in short circuit (no longer than 5 seconds) is not more 250 C. If a

joint is in the cable, the temperature of the tinning welding joint is not more than 120 C, compressing joint

not more than150 C and electro-welding or gas-welding joint not more than 250 C.

No drop is limited provided there is full mechanical tension when cable is laid. It is forbidden to lay cable in

magnetic-pipe or to fix cable by circling around the cable with magnetic materials.

Being laid, the minimum temperature of the cable shall not be lower than 0 C, In the case of lower tempera-

ture, heating measures shall be taken.

Core Products Standard of product

The 66kV、132kV XLPE Insulated power cable is

produced according to the standard IEC60840 “power

cables with extruded insulation and their accessories

for rated voltage above 30kV(Um=36kV) up to

150kV(Um=170kV) Test methods and requirements”

The 110kV XLPE Insulated power cable is produced

according to the standard GB 11017 “Power cables

with cross-linked polyethylene insulation and their

accessories for rated voltage of 110kV”

The 220kV XLPE Insulated power cable is produced

according to the standard GB/Z 18890 “Power cables

with cross-linked polyethylene insulation and their

accessories for rated voltage of 220kV(Um=252kV)”


Power cables

A I co n d u cto r X L P E i n s u l ate d co r r u gate d A l u m i n i u m s h eat h e d P VC / P E o v e r s h eat h p o w e r ca b l e

CU co n d u cto r X L P E i n s u l ate d co r r u gate d A l u m i n i u m s h eat h e d P VC / P E o v e r s h eat h p o w e r ca b l e

CU conductor XLPE insulated Copper wires screen, metallic&plastic compound water proof layer, PVC/PE sheath power cable.

AI conductor XLPE insulated Copper wires screen, metallic&plastic compound water proof layer, PVC/PE sheath power cable.

Structure of cable

Insulation screen

Insulation screen

semi-conductive water-proof layer

Semi-conductive water-proof cushion layer

Copper wire screen

A l u m i n i u m - p l a s t i c s h e a t h

c o n d u c t o r

Conductor screen(wrapping+extrusion)

Conductor screen(wrapping+extrusion)

XLPE insulation

XLPE insulation

Corrugated aluminium sheath(APL/AL/CU/CSS)

Outer sheath(PVC/PE/HDPE/NYLON/) and semi-conductive layer(extruded or graphite coat)

Diagrams of typical structure

C o n d u c t o r

Conductor screen

X L P E i n s u l a t i o nI n s u l a t i o n s c r e e n

C o n d u c t o r

Conductor screen

X L P E i n s u l a t i o n

I n s u l at i o n s c re e n

Semi-conductive water-proof cushion layer

Semi-conductive water-proof layer

Metal sheath

Anti-corrosion layer

Outer sheath(PVC or PE) and semi-conductive layer(extruded or graphite coat)

Outer sheath(PVC or PE) and semi-conductive layer(extruded or graphite coat)

C o p p e r w i r e s c r e e n


Swelling layer

Optical fibre cable

Optical fibre cable

Outer sheath(PVC/PE/HDPE/NYLON/) and semi-conductive layer(extruded or graphite coat)

Optics fiber cable details referred to p30


c o n d u c t o r

Round compacted conductor for the cable smaller than 800mm2 Round compacted or Milliken conductor optional for the cable of 800mm2

Milliken conductor for the cable of 1000mm2 and above




Power cables

Range of size

Type kV Rated voltage kV Nominal cross-section mm2

YJA02 YJLA02YJA02 YJLA03 YJLW02 YJLLW02YJLW03 YJLLW03YJLW02-Z YJLLW02-ZYJLW03-Z YJLLW03-Z

66 185 240 300 400 500 630 800 1000 1200 1400 1600 1800 2000 2500

240 300 400 500 630 800 1000 1200 1400 1600 1800 2000 2500

400 500 630 800 1000 1200 1400 1600 1800 2000 2500220

110132

optical fibre cable

optical fibre cable

insulation screen

insulation screen

semi-conductive water-proof layer

semi-conductive water-proof cushion layer

copper wire screen


semi-conductive water-proof cushion layer

conductor screen(wrapping+extrusion)

conductor screen(wrapping+extrusion)

XLPE insulation

XLPE insulation

1.5+0.2mm

2.3+0.2mm

Max 4mm

Max 7.5mm

Description of the cable construction

Conductor mostly use compact circular structure. For if copper conduct normal cross-section is in

range of 800 mm2 and above, and the Aluminiun conductor in the range of 1000mm2 and above the

structure should be Milliken conductor. We can achive the conductor longitudinal water-blocking

request.

Conductor screen is formed by wrapped semi-conducting tapes and semi-conducting layer.

Super-clean XLPE insulated materials shall be extruded on the screen of conductor.

Outer screen is made up of super-smooth cross-linked screen material extruded on the insulation.

Products in all types and size have longitudinal water-blocking layers which is made up of semi-

conducting water-blocking cushion tape wrapped between outer screen and radial water-blocking

layer

Metal screen adopts Cu wire winded sparsely and Cu tape wrapped. The nominal cross-section area of

the wire is 95 mm2, different cross-section area can be designed for various application means.

Aluminiun-plastic tape or corrugated aluminiun sheath can be taken as radial water-resistant layer.

Corrugated aluminiun sheath can be also taken as the metal screen layer.

Over sheaths shall be extruded PVC or PE, extruded or coated semiconductive layer on the surface.

corrugated aluminium sheath(APL/AL/CU/CSS)

outer sheath(PVC/PE/HDPE/NYLON/) and semi-conductive layer(extruded or graphite coat)

outer sheath(PVC/PE/HDPE/NYLON/) and semi-conductive layer(extruded or graphite coat)



Optics fiber cable structure schematic drawing


PET tubeOintment filling

Optical fiber cableReinforcement piece

Sheath

Ointment filling

Stainless steel casingOptical fiber (2 - 6 pieces of single mode or multi-mode fiber)

c o n d u c t o r

c o n d u c t o r






Power cables

C a b l e c o n s t r u c t i o n p a r a m e t e r YJ L W 0 2 ( 0 3 ) C a b l e c o n s t r u c t i o n p a r a m e t e r YJ L W 0 2 ( 0 3 )

voltage level kV

nominalcross-section mm2

conductor diameter mm

thickness of inner screen mm

thickness of insulation mm

thickness of outer screen mm

approx of water blocking mm

thickness of corrugated AL sheath mm

thickness of sheath mm

over all diameter of cable mm

kg /kmApprox.Weight of Cable

approx weight of CU core cable

approx weight of AL core cable

150 14.2 1.5 12.0 1.0 2.0 2.0 4.0 70.1 5250 4350

185 15.9 1.5 12.0 1.0 2.0 2.0 4.0 71.8 5700 4600

240 18.1 1.5 12.0 1.0 2.0 2.0 4.0 74.0 6400 4950

300 20.3 1.5 11.0 1.0 2.0 2.0 4.0 74.2 6900 5050

400 23.0 1.5 11.0 1.0 2.0 2.0 4.0 76.9 7850 5550

500 26.0 1.5 11.0 1.0 2.0 2.0 4.0 79.9 9000 6050

630 29.7 1.5 11.0 1.0 2.0 2.0 4.0 83.6 10600 6750

800 34.0 1.5 10.0 1.0 2.0 2.0 4.0 85.9 12250 7300

35.2 2.4 10.0 1.0 2.0 2.0 4.0 89.9 12650 7800

1000 39.5 2.4 10.0 1.0 2.0 2.0 4.0 94.2 14800 8650

1200 43.5 2.4 10.0 1.0 2.0 2.3 4.0 100.0 17250 9850

1400 46.1 2.4 10.0 1.0 2.0 2.3 4.0 102.6 19250 10650

1600 49.2 2.4 10.0 1.0 2.0 2.3 4.0 105.7 21300 11450

1800 52.1 2.4 10.0 1.0 2.0 2.3 4.0 108.6 23300 12250

2000 55.2 2.4 10.0 1.0 2.0 2.3 4.0 111.7 21750 11950

38/66

voltage level kV













240 18.1 1.5 19.0 1.0 2.0 2.0 4.0 88.0 8050.0 6600.0

300 20.3 1.5 18.5 1.0 2.0 2.0 4.0 89.2 8650.0 6850.0

400 23.0 1.5 17.5 1.0 2.0 2.0 4.0 89.9 9400.0 7050.0

500 26.0 1.5 17.0 1.0 2.0 2.0 4.0 91.9 10500.0 7550.0

630 29.7 1.5 16.5 1.0 2.0 2.0 4.5 95.6 12250.0 8350.0

800 34.0 1.5 16.0 1.0 2.0 2.0 4.5 99.9 14100.0 9150.0

35.2 2.4 16.0 1.0 2.0 2.0 4.5 102.9 14550.0 9650.0

1000 39.5 2.4 16.0 1.0 2.0 2.3 4.5 109.0 17150.0 11000.0

1200 43.5 2.4 16.0 1.0 2.0 2.3 5.0 114.0 19600.0 12250.0

1400 46.1 2.4 16.0 1.0 2.0 2.3 5.0 116.6 21600.0 13000.0

1600 49.2 2.4 16.0 1.0 2.0 2.3 5.0 119.7 23700.0 13900.0

1800 52.1 2.4 16.0 1.0 2.0 2.3 5.0 125.6 25950.0 14900.0

2000 55.2 2.4 16.0 1.0 2.0 2.3 5.0 128.7 28100.0 15800.0

2200 57.5 2.4 16.0 1.0 2.0 2.6 5.0 131.3 30450.0 17000.0

2500 61.5 2.4 16.0 1.0 2.0 2.6 5.0 135.3 33550.0 18250.0

64/110

voltage level kV













185 15.9 1.5 14.0 1.0 2.0 2.0 4.0 75.8 6150.0 5050.0

240 18.1 1.5 14.0 1.0 2.0 2.0 4.0 78.0 6800.0 5350.0

300 20.3 1.5 14.0 1.0 2.0 2.0 4.0 80.2 7500.0 5650.0

400 23.0 1.5 14.0 1.0 2.0 2.0 4.0 82.9 8500.0 6200.0

500 26.0 1.5 14.0 1.0 2.0 2.0 4.0 85.9 9700.0 6750.0

630 29.7 1.5 14.0 1.0 2.0 2.0 4.0 89.6 11350.0 7450.0

800 34.0 1.5 14.0 1.0 2.0 2.0 4.0 93.9 13250.0 8350.0

35.2 2.4 14.0 1.0 2.0 2.0 4.0 97.9 13750.0 8850.0

1000 39.5 2.4 14.0 1.0 2.0 2.0 4.0 102.2 15900.0 9800.0

1200 43.5 2.4 14.0 1.0 2.0 2.3 4.0 108.0 18450.0 11100.0

1400 46.1 2.4 14.0 1.0 2.0 2.3 4.0 110.6 20400.0 11850.0

1600 49.2 2.4 14.0 1.0 2.0 2.3 4.0 113.7 22550.0 12700.0

1800 52.1 2.4 14.0 1.0 2.0 2.3 4.0 116.6 24600.0 13550.0

2000 55.2 2.4 14.0 1.0 2.0 2.3 4.0 119.7 26750.0 14450.0

50/66

voltage level kV













240 18.1 1.5 18.0 1.0 2.0 2.0 4.0 86.0 7350.0 5900.0

300 20.3 1.5 18.0 1.0 2.0 2.0 4.0 88.2 8100.0 6300.0

400 23.0 1.5 18.0 1.0 2.0 2.0 4.0 90.9 9100.0 6750.0

500 26.0 1.5 18.0 1.0 2.0 2.0 4.0 93.9 10300.0 7350.0

630 29.7 1.5 18.0 1.0 2.0 2.0 4.5 98.6 12150.0 8250.0

800 34.0 1.5 18.0 1.0 2.0 2.0 4.5 103.9 14100.0 9200.0

35.2 2.4 18.0 1.0 2.0 2.0 4.5 106.9 14550.0 9650.0

1000 39.5 2.4 18.0 1.0 2.0 2.3 4.5 113.0 17100.0 11000.0

1200 43.5 2.4 18.0 1.0 2.0 2.3 4.5 117.0 19300.0 11950.0

1400 46.1 2.4 18.0 1.0 2.0 2.3 4.5 119.6 21350.0 12800.0

1600 49.2 2.4 18.0 1.0 2.0 2.3 4.5 122.7 23450.0 13650.0

1800 52.1 2.4 18.0 1.0 2.0 2.3 4.5 124.6 25350.0 14350.0

2000 55.2 2.4 18.0 1.0 2.0 2.3 4.5 131.7 27750.0 15450.0

2200 57.5 2.4 18.0 1.0 2.0 2.6 4.5 134.3 30150.0 16650.0

2500 61.5 2.4 18.0 1.0 2.0 2.6 4.5 138.3 33250.0 17900.0

76/132


Power cables

800segmented

800segmented

800segmented

800segmented

C a b l e c o n s t r u c t i o n p a r a m e t e r YJ A 0 2 ( 0 3 )

voltage level kV













400 23.0 2.1 27.0 1.0 2.0 2.4 5.0 116.0 12700.0 10350.0

500 26.0 2.1 27.0 1.0 2.0 2.4 5.0 119.0 14000.0 11050.0

630 29.7 2.1 26.0 1.0 2.0 2.4 5.0 120.7 15400.0 11550.0

800 34.0 2.1 25.0 1.0 2.0 2.4 5.0 123.0 17250.0 12350.0

35.2 2.4 25.0 1.0 2.0 2.4 5.0 124.8 17500.0 12600.0

1000 39.5 2.4 24.0 1.0 2.0 2.6 5.0 128.3 19750.0 13650.0

1200 43.5 2.4 24.0 1.0 2.0 2.6 5.0 132.3 22000.0 14650.0

1400 46.1 2.4 24.0 1.0 2.0 2.6 5.0 134.9 24150.0 15550.0

1600 49.2 2.4 24.0 1.0 2.0 2.6 5.0 138.0 26350.0 16500.0

1800 52.1 2.4 24.0 1.0 2.0 2.8 5.0 142.1 28700.0 17700.0

2000 55.2 2.4 24.0 1.0 2.0 2.8 5.0 145.2 30950.0 18650.0

2200 57.5 2.4 24.0 1.0 2.0 2.8 5.0 147.5 33000.0 19500.0

2500 61.5 2.4 24.0 1.0 2.0 2.8 5.0 151.5 36250.0 20900.0

127/220

voltage level kV






thickness of water blocking

mm

approx.screen area

mm2


mm

thickness of sheath

mm

over all diameter of cable

mm

nominalthickness

of APL/HDPEsheath mm




150 14.2 1.5 12.0 1.0 1.5 50.0 0.3 0.25 2.8 56.7 3850 3000

185 15.9 1.5 12.0 1.0 1.5 50.0 0.3 0.25 2.8 58.5 4300 3200

240 18.1 1.5 12.0 1.0 1.5 50.0 0.3 0.25 2.9 60.9 4950 3500

300 20.3 1.5 11.0 1.0 1.5 50.0 0.3 0.25 2.9 61.1 5450 3600

400 23.0 1.5 11.0 1.0 1.5 50.0 0.3 0.25 3.0 64.0 6350 4050

500 26.0 1.5 11.0 1.0 1.5 50.0 0.3 0.25 3.1 67.2 7500 4550

630 29.7 1.5 11.0 1.0 1.5 50.0 0.3 0.25 3.2 71.1 9050 5150

800 34.0 1.5 10.0 1.0 1.5 50.0 0.3 0.25 3.2 73.5 10600 5700

800(m) 35.2 2.4 10.0 1.0 1.5 50.0 0.3 0.25 3.2 76.5 11000 6100

1000 39.5 2.4 10.0 1.0 1.5 50.0 0.3 0.25 3.4 81.1 13050 6950

1200 43.5 2.4 10.0 1.0 1.5 50.0 0.3 0.25 3.5 85.3 15100 7750

1400 46.1 2.4 10.0 1.0 1.5 50.0 0.3 0.25 3.6 88.1 17050 8450

1600 49.2 2.4 10.0 1.0 1.5 50.0 0.3 0.25 3.7 91.5 19050 9250

1800 52.1 2.4 10.0 1.0 1.5 50.0 0.3 0.25 3.8 94.5 21050 10000

2000 55.2 2.4 10.0 1.0 1.5 50.0 0.3 0.25 3.9 97.8 23050 10750

38/66

voltage level kV







mm

approx.screen area

mm2


mm

thickness of sheath

mm


mm

nominalthickness





185 15.9 1.5 14.0 1.0 1.5 50.0 0.3 0.25 4.0 64.9 4900.0 3800.0

240 18.1 1.5 14.0 1.0 1.5 50.0 0.3 0.25 4.0 67.1 5550.0 4100.0

300 20.3 1.5 14.0 1.0 1.5 50.0 0.3 0.25 4.0 69.3 6200.0 4400.0

400 23.0 1.5 14.0 1.0 1.5 50.0 0.3 0.25 4.0 72.0 7150.0 4800.0

500 26.0 1.5 14.0 1.0 1.5 50.0 0.3 0.25 4.0 75.0 8300.0 5350.0

630 29.7 1.5 14.0 1.0 1.5 50.0 0.3 0.25 4.0 78.7 9850.0 5950.0

800 34.0 1.5 14.0 1.0 1.5 50.0 0.3 0.25 4.0 83.0 11700.0 6750.0

800(m) 35.2 2.4 14.0 1.0 1.5 50.0 0.3 0.25 4.0 86.0 12100.0 7200.0

1000 39.5 2.4 14.0 1.0 1.5 50.0 0.3 0.25 4.0 90.3 14200.0 8050.0

1200 43.5 2.4 14.0 1.0 1.5 50.0 0.3 0.25 4.0 94.3 16250.0 8900.0

1400 46.1 2.4 14.0 1.0 1.5 50.0 0.3 0.25 4.0 96.9 18250.0 9650.0

1600 49.2 2.4 14.0 1.0 1.5 50.0 0.3 0.25 4.0 100.0 20250.0 10400.0

1800 52.1 2.4 14.0 1.0 1.5 50.0 0.3 0.25 4.0 102.9 22250.0 11200.0

2000 55.2 2.4 14.0 1.0 1.5 50.0 0.3 0.25 4.0 106.0 24250.0 11950.0

50/66

C a b l e c o n s t r u c t i o n p a r a m e t e r YJ L W 0 2 ( 0 3 )


Power cables

800segmented

150 0.1240 0.2060 0.1590 0.2640

185 0.0991 0.1640 0.1270 0.2110

240 0.0754 0.1250 0.0970 0.1610

300 0.0601 0.1000 0.0777 0.1290

400 0.0470 0.0778 0.0614 0.1010

500 0.0366 0.0605 0.0485 0.0787

630 0.0283 0.0469 0.0384 0.0616

800 0.0221 0.0367 0.0311 0.0489

800 0.0221 0.0367 0.0311 0.0489

1000 0.0176 0.0291 0.0232 0.0378

1200 0.0151 0.0247 0.0201 0.0322

1400 0.0129 0.0212 0.0175 0.0278

1600 0.0113 0.0186 0.0156 0.0246

1800 0.0101 0.0165 0.0141 0.0220

2000 0.0090 0.0149 0.0129 0.0201

2200 0.0083 0.0138 0.0121 0.0190

2500 0.0073 0.0121 0.0110 0.0169

E l e c t r i c p e r f o r m a n c e p a r a m e t e rmax resistance of conductor unit：Ω/km

nominal cross-section mm2

DC res is tance（20℃） AC res ls tance（90℃）

Cu A l Cu A l

capacitance unit：μF/km

nominal cross-section mm2 38/66kV 48/66kV 64/110kV 76/132kV 127/220kV

150 0.145

185 0.155 0.140

240 0.167 0.150 0.124 0.128

300 0.191 0.161 0.134 0.136

400 0.207 0.174 0.149 0.146 0.116

500 0.225 0.188 0.164 0.158 0.124

630 0.247 0.206 0.183 0.172 0.137

800 0.295 0.226 0.204 0.187 0.152

800 0.317 0.242 0.218 0.200 0.158

1000 0.345 0.262 0.236 0.216 0.175

1200 0.370 0.281 0.252 0.230 0.186

1400 0.387 0.293 0.263 0.240 0.193

1600 0.407 0.307 0.276 0.251 0.202

1800 0.426 0.321 0.287 0.262 0.210

2000 0.446 0.335 0.300 0.273 0.218

2200 0.461 0.345 0.309 0.281 0.224

2500 0.486 0.364 0.326 0.296 0.235

C a b l e c o n s t r u c t i o n p a r a m e t e r YJ A 0 2 ( 0 3 )


Power cables

voltage level kV







mm

approx.screen area

mm2


mm

thickness of sheath

mm


mm

nominalthickness





240 18.1 1.5 19.0 1.0 1.5 95.0 0.3 0.25 4.0 77.8 31150.0 15850.0

300 20.3 1.5 18.5 1.0 1.5 95.0 0.3 0.25 4.0 79.0 5350.0 4200.0

400 23.0 1.5 17.5 1.0 1.5 95.0 0.3 0.25 4.0 79.7 5950.0 4500.0

500 26.0 1.5 17.0 1.0 1.5 95.0 0.3 0.25 4.0 81.7 6650.0 4850.0

630 29.7 1.5 16.5 1.0 1.5 95.0 0.3 0.25 4.5 85.4 7600.0 5250.0

800 34.0 1.5 16.0 1.0 1.5 95.0 0.3 0.25 4.5 88.7 8700.0 5750.0

800(m) 35.2 2.4 16.0 1.0 1.5 95.0 0.3 0.25 4.5 91.7 10300.0 6400.0

1000 39.5 2.4 16.0 1.0 1.5 95.0 0.3 0.25 4.5 96.0 12100.0 7200.0

1200 43.5 2.4 16.0 1.0 1.5 95.0 0.3 0.25 5.0 101.0 12500.0 7650.0

1400 46.1 2.4 16.0 1.0 1.5 95.0 0.3 0.25 5.0 103.6 14600.0 8500.0

1600 49.2 2.4 16.0 1.0 1.5 95.0 0.3 0.25 5.0 106.7 16700.0 9350.0

1800 52.1 2.4 16.0 1.0 1.5 95.0 0.3 0.25 5.0 109.6 18650.0 10050.0

2000 55.2 2.4 16.0 1.0 1.5 95.0 0.3 0.25 5.0 112.7 20650.0 10850.0

2200 57.5 2.4 16.0 1.0 1.5 95.0 0.3 0.25 5.0 115.0 22650.0 11600.0

2500 61.5 2.4 16.0 1.0 1.5 95.0 0.3 0.25 5.0 119.0 24650.0 12400.0

64/110

voltage level kV







mm

approx.screen area

mm2


mm

thickness of sheath

mm


mm

nominalthickness





240 18.1 1.5 18.0 1.0 1.5 95.0 0.3 0.25 3.3 74.4 7000.0 5550.0

300 20.3 1.5 18.0 1.0 1.5 95.0 0.3 0.25 3.4 76.8 7600.0 5750.0

400 23.0 1.5 18.0 1.0 1.5 95.0 0.3 0.25 3.5 79.7 8350.0 6000.0

500 26.0 1.5 18.0 1.0 1.5 95.0 0.3 0.25 3.6 82.9 9400.0 6450.0

630 29.7 1.5 18.0 1.0 1.5 95.0 0.3 0.25 3.7 86.8 11000.0 7100.0

800 34.0 1.5 18.0 1.0 1.5 95.0 0.3 0.25 3.8 91.3 12750.0 7800.0

800(m) 35.2 2.4 18.0 1.0 1.5 95.0 0.3 0.25 3.8 94.3 13150.0 8300.0

1000 39.5 2.4 18.0 1.0 1.5 95.0 0.3 0.25 3.9 98.9 15300.0 9150.0

1200 43.5 2.4 18.0 1.0 1.5 95.0 0.3 0.25 4.1 103.2 17550.0 10200.0

1400 46.1 2.4 18.0 1.0 1.5 95.0 0.3 0.25 4.2 106.0 19550.0 10950.0

1600 49.2 2.4 18.0 1.0 1.5 95.0 0.3 0.25 4.3 109.3 21600.0 11750.0

1800 52.1 2.4 18.0 1.0 1.5 95.0 0.3 0.25 4.4 112.4 23600.0 12550.0

2000 55.2 2.4 18.0 1.0 1.5 95.0 0.3 0.25 4.5 115.6 25650.0 13350.0

2200 57.5 2.4 18.0 1.0 1.5 95.0 0.3 0.25 4.5 118.1 27600.0 14100.0

2500 61.5 2.4 18.0 1.0 1.5 95.0 0.3 0.25 4.7 122.4 30600.0 15250.0

76/132

max allowable short circuit rating of conductor u n i t ：k A / 1 s

Cu A l Cu A l

Charging current unit：A/km

nominal cross-section mm2 38/66kV 48 /66kV 64 /110kV 76 /132kV 127/220kV

nominal cross-section mm2

inductance unit：mH/km

nominal cross-section mm2 in flat formation in trefoil formation

nominal cross-section mm2 Cu Al

150 21.5 14.2

185 26.5 17.5

240 34.3 22.7

300 42.9 28.4

400 57.2 37.8

500 71.6 47.3

630 90.2 59.5

800 114.5 75.6

800 114.5 75.6

1000 143.1 94.5

1200 171.7 113.4

1400 200.3 132.3

1600 229.0 151.2

1800 257.6 170.1

2000 286.2 189.0

2200 314.8 207.9

2500 357.8 236.3

185 37.7 27.5 23.0

240 39.0 28.5 23.8

300 40.4 29.5 24.7

400 42.0 30.7 25.7

500 43.8 32.0 26.8

630 46.1 33.7 28.2

800 48.7 35.6 29.8

800 50.8 37.1 31.1

1000 60.9 44.4 37.0

1200 63.7 46.4 38.7

1400 65.5 47.7 39.8

1600 67.7 49.2 41.1

1800 70.2 51.1 42.6

2000 72.3 52.7 43.9

2200 83.4 60.5 50.4

2500 86.5 62.8 52.3

45.1 33.0 27.6

45.8 33.5 28.0

46.3 33.8 28.3

47.5 34.7 29.0

49.1 35.9 30.0

51.5 37.6 31.4

53.3 38.9 32.6

64.2 46.8 39.0

67.0 48.8 40.7

68.8 50.1 41.8

71.0 51.6 43.1

73.0 53.1 44.3

75.1 54.7 45.6

86.5 62.8 52.3

89.6 65.0 54.1

71.0 51.7 43.1

73.2 53.2 44.4

74.4 54.1 45.1

76.1 55.3 46.1

77.7 56.5 47.1

86.0 62.4 51.9

89.1 64.6 53.8

91.1 66.1 55.0

93.5 67.9 56.5

103.2 74.7 62.1

105.8 76.6 63.7

107.7 78.0 64.8

111.0 80.4 66.9

max allowable short circuit rating of AI sheath u n i t ：k A / 1 s

66kV 110kV 220kV

1s 2s 3s 1s 2s 3s 1s 2s 3s

150 1.73

185 1.85 2.20

240 2.00 2.36 2.61 3.05

300 2.28 2.53 2.84 3.25

400 2.48 2.73 3.12 3.50 4.64

500 2.69 2.96 3.44 3.77 4.96

630 2.95 3.23 3.75 4.10 5.47

800 3.52 3.55 4.11 4.48 6.08

800 3.78 3.80 4.39 4.78 6.31

1000 4.11 4.12 4.75 5.15 6.97

1200 4.42 4.41 5.07 5.50 7.42

1400 4.62 4.60 5.29 5.73 7.70

1600 4.86 4.82 5.54 6.00 8.05

1800 5.08 5.03 5.78 6.25 8.36

2000 5.32 5.26 6.03 6.51 8.70

2200 5.50 5.43 6.22 6.71 8.95

2500 5.81 5.72 6.55 7.06 9.39

150 0.764 0.718

185 0.741 0.695

240 0.715 0.669

300 0.692 0.646

400 0.667 0.621

500 0.643 0.597

630 0.616 0.570

800 0.589 0.543

800 0.582 0.536

1000 0.559 0.513

1200 0.540 0.494

1400 0.528 0.482

1600 0.515 0.469

1800 0.504 0.458

2000 0.492 0.446

2200 0.484 0.438

2500 0.471 0.424


Power cables


reference continuous current-carrying capacity of cable

Cu A l Cu A l

rated voltage kV

rated voltage kV section of copper screen short circuit rating

3 8 / 6 6、 4 8 / 6 6 5 0 7 . 3

6 4 / 11 0、 7 6 / 1 3 2 9 5 1 3 . 9

1 5 0 5 2 4 4 0 6 4 6 9 3 6 4 4 2 2 3 2 7 4 0 7 3 1 9

1 8 5 5 9 9 4 6 5 5 3 6 4 1 6 4 7 5 3 7 0 4 5 8 3 5 9

2 4 0 7 0 6 5 4 9 6 3 3 4 9 2 5 4 9 4 2 8 5 2 7 4 1 6

3 0 0 8 0 8 6 2 9 7 2 5 5 6 4 6 1 9 4 8 3 5 9 0 4 6 7

4 0 0 9 4 2 7 3 8 8 4 6 6 1 8 7 0 5 5 5 3 6 5 5 5 3 1

5 0 0 1 0 8 6 8 5 6 9 7 6 7 1 8 7 9 6 6 2 9 7 4 4 6 0 1

6 3 0 1 2 5 1 9 7 5 11 2 8 8 1 9 8 9 7 7 0 3 8 2 7 6 6 6

8 0 0 1 4 2 7 11 4 8 1 2 9 1 9 6 7 9 9 7 8 0 4 9 0 6 7 5 6

8 0 0 1 5 0 0 11 8 2 1 2 7 1 9 8 3 1 0 3 0 8 1 7 9 4 8 7 7 4

1 0 0 0 1 7 0 4 1 3 5 6 1 3 8 9 1 0 9 8 11 4 7 9 1 4 1 0 3 5 8 5 9

1 2 0 0 1 8 5 6 1 4 9 6 1 5 2 2 1 2 1 6 1 2 2 9 9 8 8 1 0 9 4 9 2 1

1 4 0 0 2 0 0 1 1 6 2 3 1 6 5 1 1 3 2 5 1 3 1 5 1 0 6 0 11 5 0 9 7 8

1 6 0 0 2 1 2 9 1 7 4 3 1 7 6 8 1 4 2 9 1 3 8 8 11 2 7 11 9 5 1 0 2 8

allowable short circuit rating of copper screen u n i t ：k A / 1 s

i n a i r i n ea r t h

in flat formation in trefoil formation in flat formation in trefoil formation

Cu Al Cu Al Cu Al Cu Al


reference continuous current-carrying capacity of cable

rated voltage kV

i n a i r i n ea r t h

in flat formation in trefoil formation in flat formation in trefoil formation

Cu Al Cu Al Cu Al Cu Al

48 /66kV

76/132kV

127/220kV

64/110kV

2 4 0 6 8 7 5 3 5 6 1 6 4 7 9 5 3 9 4 2 0 5 2 1 4 1 0

3 0 0 7 6 2 6 1 3 6 8 4 5 5 0 6 0 8 4 7 4 5 8 4 4 6 1

4 0 0 8 8 4 7 2 0 7 9 4 6 4 6 6 9 2 5 4 3 6 3 8 5 2 6

5 0 0 1 0 1 4 8 3 6 9 1 3 7 0 2 7 8 2 6 1 9 7 3 8 5 9 5

6 3 0 11 6 1 9 5 3 1 0 4 8 8 0 2 8 8 1 6 9 0 8 2 3 6 6 1

8 0 0 1 3 1 3 11 2 4 11 9 0 9 4 8 9 7 9 7 9 2 9 0 5 7 5 1

8 0 0 1 3 6 5 11 5 7 1 2 4 1 9 7 6 1 0 1 5 8 0 5 9 4 5 7 6 9

1 0 0 0 1 5 2 3 1 3 2 4 1 3 4 3 11 2 3 111 9 8 9 9 1 0 2 4 8 4 8

1 2 0 0 1 7 3 7 1 4 5 9 1 4 9 8 1 2 4 3 11 8 8 9 6 9 1 0 8 1 9 1 0

1 4 0 0 1 8 5 6 1 5 8 1 1 6 11 1 3 5 4 1 2 9 1 1 0 4 5 11 3 7 9 6 6

1 6 0 0 1 9 5 5 1 6 9 6 1 7 11 1 4 5 9 1 3 5 8 11 8 0 11 8 2 1 0 1 5

1 8 0 0 2 1 6 7 1 8 0 3 1 9 0 4 1 5 5 9 1 4 3 9 1 2 3 4 1 2 1 8 1 0 6 0

2 0 0 0 2 2 6 8 1 8 9 8 2 0 0 9 1 6 5 1 1 4 9 2 1 3 0 5 1 2 5 3 1 0 9 7

2 4 0 6 8 7 5 3 5 6 1 6 4 7 9 5 3 9 4 2 0 5 2 1 4 0 9

3 0 0 7 8 6 6 1 2 6 8 7 5 4 8 6 0 5 4 7 2 5 8 3 4 6 0

4 0 0 9 1 2 7 1 5 7 9 8 6 4 1 6 8 7 5 4 0 6 3 1 5 2 4

5 0 0 1 0 4 9 8 2 8 9 2 0 7 4 3 7 7 6 6 1 4 7 3 5 5 9 3

6 3 0 1 2 0 7 9 4 0 1 0 1 9 8 4 6 8 7 2 6 8 9 8 2 0 6 5 8

8 0 0 1 3 8 2 1111 11 7 1 9 3 7 9 7 1 7 8 7 9 0 1 7 4 8

8 0 0 1 4 4 7 11 4 2 1 2 2 9 9 6 6 1 0 0 4 7 9 8 9 4 0 7 6 5

1 0 0 0 1 6 3 7 1 3 0 7 1 4 0 2 1 0 7 7 111 5 8 8 8 1 0 1 9 8 4 5

1 2 0 0 1 7 7 9 1 4 3 9 1 4 1 9 11 9 2 11 9 0 9 3 0 1 0 7 7 9 0 7

1 4 0 0 1 9 1 3 1 5 5 9 1 5 3 6 1 2 9 7 1 2 7 2 1 0 3 1 11 3 2 9 6 3

1 6 0 0 2 0 3 3 1 6 7 2 1 6 4 4 1 3 9 7 1 3 3 5 1 0 9 5 11 7 7 1 0 1 2

1 8 0 0 2 1 3 3 1 7 7 6 1 7 3 7 1 4 2 5 1 4 2 2 11 4 7 1 2 1 4 1 0 5 6

2 0 0 0 2 2 3 2 1 8 6 9 1 8 3 1 1 5 0 6 1 4 7 4 1 2 0 0 1 2 4 9 1 0 9 4

4 0 0 8 7 9 6 9 0 7 9 2 6 2 0 7 0 8 5 5 4 6 5 1 5 2 0

5 0 0 1 0 0 9 7 9 8 9 11 7 1 8 8 0 9 6 3 6 7 2 8 5 8 8

6 3 0 11 6 3 9 1 0 1 0 1 3 8 2 0 9 1 5 7 2 8 8 11 6 5 3

8 0 0 1 3 2 6 1 0 7 1 11 6 1 9 6 9 1 0 2 5 8 2 5 8 9 2 7 4 2

8 0 0 1 3 8 1 1 0 9 7 1 2 1 4 9 9 4 1 0 6 7 8 5 7 9 2 6 7 5 7

1 0 0 0 1 5 7 3 1 2 6 0 1 3 5 3 1 0 7 2 1 2 0 0 9 6 4 1 0 1 0 8 4 0

1 2 0 0 1 7 0 6 1 3 8 5 1 4 7 8 11 8 5 1 2 9 6 1 0 3 0 1 0 6 9 9 0 1

1 4 0 0 1 8 3 2 1 4 9 9 1 5 5 2 1 2 8 9 1 3 9 7 111 8 11 2 4 9 5 7

1 6 0 0 1 9 4 3 1 6 0 4 1 6 5 8 1 3 8 7 1 4 8 4 11 9 5 11 7 0 1 0 0 6

1 8 0 0 2 0 3 4 1 7 0 2 1 7 5 0 1 4 8 1 1 5 4 0 1 2 7 1 1 2 0 5 1 0 4 9

2 0 0 0 2 1 2 6 1 7 8 9 1 8 4 4 1 4 9 7 1 5 9 4 1 3 3 0 1 2 4 1 1 0 8 8

2 2 0 0 2 1 8 8 1 8 5 4 1 9 0 9 1 5 5 9 1 6 2 9 1 3 7 5 1 2 6 6 111 6

2 5 0 0 2 2 8 1 1 9 6 2 2 0 11 1 6 6 5 1 6 7 9 1 4 3 8 1 3 0 3 11 6 2


Power cables

Single loop, axial distance between phases 200mm and operation temperature of conductor 90℃;

Grounding method of metal screen: single-end grounded or cross-bonded;

In air : temperature 40℃, without direct sunlight; directly buried; soil temperature 20℃, soil thermal

resistivity 1.2 K.m/W, deeply buried 1m.

Short circuit current shall be calculated at IEC949 (under adiabatic condition), short circuit start

temperature: 90℃, short circuit temperature 250℃ in 1s.

Revision coefficient of the current rating(approx.value)

depth of laying（m）

revision coefficient




environmental temperature（℃）

temperature（℃）

coefficient of thermal resistance（K.m/W）

Performance parameters provided above are according to the installation condition of cable as follows

The sensitivity of partial discharge testing system shall be 5pC or better. According to the standard in

the case of 1.5 U0, there shall be no detectable discharge exceeding the declared sensitvity from the

test object.

For Voltage-withstand test done in drums of cable 2.5U0 A.C. Voltage shall be applied between the

conductor and the metal screen, the be held for 30min, insulation without breakdown.

25 kV D.C. Voltage applies to non-metal outer sheath, which lasts 1 minute with no breakdown of the

outer sheath.

Electric Performances

Partial Discharge Test

A.C.Voltage-withstand test

Non-metal outer sheath Voltage test

Measuring the electric capacity between conductor and metal screen, the difference between the actual

value and the design value shall not be more than 8% of the design value, electric capacity design value

is attached.

Electric capacity Test

According to the standard, the impulse voltage test shall performed on the cable at a conductor

temperature 5℃ to 10℃ above maximum conductor operating temperature. The cable shall withstand

without failure to 10 positive and 10 negative voltage impulses. The impulse voltage value is done

according to the standard. After the impulse voltage test, the cable shall be subjected at ambient

temperature to power frequently voltage at 2.5 U0 for 15 minutes, no breakdown of the insulation shall

occur.

Impulse voltage test and the A.C. voltage test after the impulse voltage test

0.5 0.7 0.9 1.0 1.2 1.5

1.1 1.05 1.01 1.0 0.98 0.95

0.7 1.0 1.2 1.5 2.0 2.5

1.22 1.08 1.0 0.94 0.84 0.75

10 15 20 25 30 35 40 45

1.09 1.04 1.0 0.96 0.93 0.89 0.84 0.80

10 15 20 25 30 35 40 45

1.30 1.24 1.19 1.14 1.11 1.06 1.0 0.95


Power cables

The main test item and Technical Performances

Physical Performances Cable laying method

No Test Item

Max.elongation under load %

Max.permanent elongation after cooling %

Max.permissible shrinkage %

Min.tensile strength MPa

Tensile strength variation % Elongation at break variation%

Maximum depth of indentation %

Min.elongation at break %

Mechanical properties without ageing

Mechanical properties after ageing

Pressure Test at high temperature

Heat shock test No crack

Insulation

Physical and mechanical properties of insulation and oversheath are listed in the following table:

SheathPVC PE

1

2

3

4

5

6

175

15

4

12.5 12.5 10.0

200 150

+25 +25

+25 +25

50

300

Hot set test

Shrinkage test

According to the relevant standards, the size of voids in the insulation shall not be more than 50μm. The

number of voids whose size is more than 25μm shall not be more than 30 per 16.4cm3. In fact, the size of

voids can be controlled below 10μm.

The average of insulation thickness can not be less than nominal, the thinnest thickness can not be less

than 90% of the nominal value. The maximal thickness(Tmax) and minimal thickness(Tmin) measured

in the same section shall conform with following formula: （Tmax-Tmin）/Tmax≤8%

Inner diameter of the duct shall be calculated in the formula：Din≥1.3d or Din≥d+30mm

In the formula：D in-Inner diameter of the duct. d-Diameter of the cable.

S=2DIn the formula: S-Axial distance between a d j a ce n t phases . D-Overall diameter of the duct.

S=2d Sc=8dIn the formula: S-Axial distance between adjacent phases.

Sc=4dIn the formula: S c-Distance between the central l ines of the circuits. d-Diameter of the cable.

V o i d s i n i n s u l a t i o n

I n s u l a t i o n t h i c k n e s s

Flat laying in duct

Flat laying for direct burial in soil or in air.

Trefoil laying for direct burial in soil or in air.

S S

d

S

S c

S

S S S S

S

Single circuit

Single circuit

Single circuit

Double circuits

Double circuits

Double circuits

S S

Sc

Sc-Axial distance between central phases of the two circuits.d-Diameter of the cable.


Power cables

Minimum allowable bending radius of the cable.

When cable is laying:20d

After cable is laying:15d

In the formula:d-Diameter of the cable.

I. Structural Characteristics:

II. Parameters of the Optical Fiber Cable

SWP=F/R F=a.S

In the formula:SWP-Later pressure for the cable to bear.

F-Maximum allowable pulling force for the cable to bear.

R-Bending radius of the cable.

S-Cross-section area of the conductor.mm2

a-Coefficient.For Compact AL:a=50N/mm2;

For Compact Cu:a=70N/mm2;

For Segmental AL:a=40N/mm2;

For Segmental Cu:a=60N/mm2;

Uni-tube loose sheath structure can allow optical fiber excess length, thus increase the strain window

to increase its tensile strength;

The uni-tube is filled with dedicated ointment, which can effectively avoid the occurrence of the

optic-fiber hydrogen loss, and not only can reduce the optical fiber cable's attenuation coefficient, but

also can increase its service life;

The flat structure with middle low and on both sides high can let the external pressure applied mainly

on the reinforcement pieces so as to improve the ability of cable resistance to lateral pressure;

Flat structure makes the optical cable more closely around the line core of the power cable , and can

effectively avoid the optical fiber fracture caused by too much optical fiber tension during the process

of cable bending;

Non-magnetic materials are adopted for reinforcement pieces, which can effectively avoid the electro-

magnetic interference generated.

The production of embedded optical electro-composite structure can avoid second laying of the

optical fiber cable, reducing the cost of the project.

Figure 1 Parameters of the Optical Fiber CableOptical fiber specifications: G150/125;CasingMaterial: PBTExternal diameter: 1.5 ± 0.2 mmReinforcement piecesMaterial: Non-magneticExternal diameter: 2.0 ± 0.02 mmSheathMaterial: LLDPEDimensions: 4.0 mm x 7.5 mm (thickness x width, Max.)

Figure 2 Parameters of the Optical Fiber CableOptical fiber specifications: G150/125;CasingMaterial: Stainless steel casing;External diameter: 2.3 ± 0.2 mm;

Both ends of metal screen shall be bonded and grounded, in that case,

there is circulating current passing through the metal screen. It will

reduce the current rating of cable.

Grounding after the metal screen have been bonded at one end of the

cable. In that case, there is inductive voltage between metal screen and

ground, but no circulating current passing through. The inductive voltage

shall be in direct proportion to the length of the cable, so this grounding

method shall be only used in the line not too long.

Grounding after the two ends of metal screen have been bonded, and a

insulation splice housing shall be used in which the metal screens are

cross-bonded. In that case, there is no circulating current passing through

the metal screen, and no inductive voltage to ground at both ends of the

cable. But there is inductive voltage in the central part of the cable, and at

the positions of cross-bonding the value shall be the highest.

1.5+0.2mm 2.3+0.2mm

Max 4mm

Max 7.5mm

PET tube

Ointment filling

Ointment filling

Stainless steel casing

Optical fiber (2 - 6 pieces of single mode or multi-mode fiber)

Optical fiber cable

Reinforcement piece

Sheath

P 1 P 2

induced voltage distribution at both-end bonding

U

X

induced voltage distribution at single-end bonding

U

X

induced voltage distribution at cross- bonding

U

X

earth continuity

L1

L2

L3

Section1 Section2 Section3


Power cables

Lateral pressure and maximum allowable pulling force for cable to bear when the cable is laying.

Minimum allowable bending radius of the cable.

The grounding method of the metal screen.


I I I . Performance Parameters

Figure 1 Performance Parameters of Optical Fiber Core diameter: 50 ± 2.5 µmCladding diameter: 125 ± 2.5µmConcentricity error: ≤ 6%Core non-circularity: ≤ 6%Cladding non-circularity: ≤ 2%Attenuation coefficient: ≤2.8/1.0dB/km(850/1300 nm)Bandwidth: ≥ 500/1000MHz km (850/1300 nm)

Figure 2 Performance Parameters of Optical Fiber

Item Conditions Value Unit

Optical characteristics

A t t e n u a t i o n

Bandwidth

Numerical aperture

Effective group refractive index

Level (two-way average)

Backscatter characteristics

Inhomogeneity (entire fibre length)

Backscatter attenuation coefficient difference (bi-directional measurement)

Geometry characteristics

Core diameter

Cladding diameter

Cladding non-circularity

Coating diameter

Coating, cladding concentricity error

Coating non-circularity

Core, cladding concentricity error

Mechanical characteristics

Screening tension (offline)

Macrobend additional attenuation (100 laps, 75mm)

Coat str ipping force

Dynamic fatigue parameters

850nm ≤ 2.8

≤ 0.10

≤ 0.10

≤ 1.5

1.7

≤ 0.5≤ 0.5

≤ 0.08

≤ 12.0

dB

dB

dBdB

1300nm850nm

1300nm

1.4821.477

850nm1300nm

≤ 1.0

≤ 2.0%

≤ 5.0%

dB/kmdB/km

dB/km

≥ 400

≥ 9.0

≥ 27

≥ 400MHz·kmMHz·km

0.200±0.015

50±3.0

245±5

120±2.0

NA

N

N

μm

μm

μm

μm

μm

V. Inspection Program on Site for Optical Fiber Cable

VI. Cable Leads and Successive Program

Before and after the laying of the cable, the attenuation value of the optical fiber should be measured with

OTDR and the measured value should be within the standard range. In the cable laying process, if you encoun-

ter difficulties or severe abnormalities, it is better to stop, and monitor online the optical fiber attenuation.

Note: To test your fibre, you should first carefully open the cable outer sheath, and take out the optical cables

reserved in the cable head. If you cut the cable away from the cable head, you should carefully open the outer

sheath, locate the cable, and cut the cable with pliers first; do not cut the cable directly with a saw to avoid

the cable force. At the same time, when doing joint, sufficient cable length should be set aside.Anti-pressure: >1000N/100mmTemperature scope: -30℃~110℃min.bending radins: 30mm

1. Optical fiber cable installation steps at the cable terminal:

1.1 Open the cable outer sheath and aluminum creasing outer jacket cover, remove the cable ( cable head

approximately set aside 3 m, this cable completely retained). In the process of opening, do not damage the

fiber,and measure the fiber attenuation.

1.2 Cable terminal copper shell should have a cable exit, and lead directly the cable out and seal the cable;

1.3 Turn the optical fibers,which are at the terminal head close to the cable, one circle around the core, and

put them into the bending copper pipe, and protect the fibers with a hard plastic sleeve, and lead them into

the fiber optic terminal box.

1.4 Put the redundant fibers into the (terminal) box for connecting tail fibers.

1.5 For terminal processing, ensure the copper pipe stretching into the cable seal and insulated.

Cable core

Aluminum sleeve

Opening

Copper tube

Optical fiber

Plastic pipe Fiber box

Plastic pipe connector


Power cables

2.1 Laying type ( optical fiber connector placed within the copper shell)

2.1.1 Strip off both ends of the cable about 1.5m, while keeping fiber intact without damage, and

measure the fiber attenuation.

2.1.2 Before connecting the optical fiber, it should be wound on the middle connector, then carry on the

optical fiber fusion.

2.1.3 One end of the optical fiber should be pre-set a heat shrinkable tube or rubber tube. After being

connected, the hot-melt tube and the stripped part of the optical fiber cable should be extended into the

heat shrinkable tube or the rubber tube; both ends of the tube should be wrapped with "self-adhesive

tape" to prevent water, while ensuring the heat shrinkable tube or rubber tube free from bending force.

2.1.4 After being wrapped, it should be fastened with tape to prevent them from moving slip. then shell

the cable connector and optical fibe connector for protection.

2.2 External-laying (fiber optic connector placed outside the copper shell)

Strip off both ends of the cable about 1.5m, while keeping fiber intact without damage, the optical fiber

installation the same way as describes in 1.

4. Optical Fiber Connecting

At first, all the protective layer of the cable should be stripped off, exposing the fiber loose tube about 50

cm, one of the optical fiber should be pre-set with a heat shrinkable tube for later use; check the continued

identification, remove 4 ~ 6 cm of coating layer at the end of the optical fiber; then cut the optical fiber with

a fiber cutter, and place the optical fiber into the V-shaped groove of the welding machine, push the weld-

ing button for automatic welding.

5. Quality Check

After the optical fiber being welded, observe immediately the shape of the connecting position and the

splice loss values through the display. At this time, measure the attenuation of the connected line with

OTDR to ensure the value within the standard range.

6. Joint Protection

As the optical fiber joints are in bare state, after being welded, the joints should be immidiately heat-

shrinkable protected.

7. Remaining Fiber Accepting

Being connected, the remaining 60 ~ 80 cm of fiber, in accordance with the regulations, should be coiled

on disk with fixed radius and the joints should be fixed within the positioning slots. the optical fiber joints

should be marked or numbered in sequence.

VII. Waterproofing and Protection

Temperature measurement system should be installed behind the installation of the cable. All connection

and protection of the optical fiber cable should be same as ” Cable Leads and Successive Program”, but

the installation ends of the temperature measurement system need to be set aside and prepared with

protective measures. Leave a joint allowance, and coil the cable according to the specified bending radius,

and fix it with adhesive tape in a stable place. At the same time, add warning labels to prevent external

damage; cable ends should be treated with heat shrinkable seal and waterproofing.

2. Optical Fiber Cable Installation at the Cable Connector

Cable core (intermediate connector/joint)

Optical fiber

Rubber tube

Optical fiber connector/joint


Power cables

3.1 Optical Fiber Preparation

The optical fiber cable preparation includes checking the structure of the cable, fiber length and attenua-

tion measurements. On each side of the connection area, set aside 3 ~ 5 m cable, which could be properly

adjusted according to site need.

3.2 Joint Box Installation

Secure the cable on the bracket of the joint box, and according to the design requirements, carry out

connecting and disconnecting treatment of the strengthening components.

3. Optical Fiber Connection


Power cables


Power cables


Power cables


Power cables


Power cables


Power cables

In order to better serve national users, Centuray established a three-tier service system covering all parts of the country, including the company headquarters technical service center and six area technical service office and authorized agent technical service point. A professional engineer team and complete service tools、spare parts and spare parts warehouse are provided in the technical service center of the company headquarters and the major area, the technical service point of authorized agent is equipped with certified service engineers.

Centuray established a dedicated user training center for product operation and maintenance training for technical personnel of agents and users at company headquarters.

Service network

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The product department and customer service department of Centuray is technical service responsibility department, providing customers with the following services:

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After-sale service·Technical consultation·Periodical inspection·Equipment maintenance·System transformation and capacity expansion

Service commitmentCenturay provides 7×24 hours of technical support services, provides free technical guidance during equipment installation.Centuray has plenty of spare parts and Spare parts warehouse, ensuring timely maintenance of equipment after failure.

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