Ohtl Hi Voltage Conductors Tr 5 04e 080709 Rev A

8/13/2019 Ohtl Hi Voltage Conductors Tr 5 04e 080709 Rev A

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TEKNISK RIKTLINJE 1 (15)

Enhet, verksamhetsomrde Datum Version

NT, Teknik 08-07-09 A TR 5-04E

Samrd

CONDUCTORS

FOR 220 kV AND 400 kV OH LINES

IntroductionThis document in English shall be regarded as a translation of the correspondingguidelines in Swedish. The aim of the translation is to provide support to foreignmanufacturers. The wording in Swedish and the interpretation thereof shall governcontract and legal relations between the parties of the purchasing process.

These guidelines describe the requirements on steel-, aluminium- (AAC), aluminiumconductors steel reinforced (ACSR) and all aluminium alloy (AAAC) conductors foroverhead transmission lines and cover design and inspection. The guidelines intend toguarantee satisfactory performance of conductors during the lifetime of the overheadline and shall be used at purchasing of conductors.

Svenska Kraftnt 08-07-09 TR 5-04E rev ATekniska Riktlinjer


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4.2 SCOPEThese guidelines are applicable to steel, aluminium, steel reinforced

aluminium and aluminium alloy conductors for overhead lines and

comprise design and testing.

The intention of the specification is to guarantee satisfactory performanceof the conductors during the lifetime of the overhead line.

For conductors to be buried underground refer to SvK TR 5-13E.

4.3 DEFINITIONSTechnical terms and definitions used in these guidelines:

CreepPermanent elongation under constant stress over a period of time.

4.4 DESCRIPTION

4.4.1 STEEL CONDUCTORS

Conductors consisting of several layers of strands made from hot-dip

galvanised steel. See Figures 1a and 1b.

4.4.2 ALUMINIUM CONDUCTORS (AAC)

Conductors consisting of several layers of strands made from aluminium.

See Figure 2.

4.4.3 ALUMINIUM CONDUCTORS STEEL REINFORCED (ACSR)

Conductors having a core consisting of a strand, or several layers of

strands, made from hot-dip galvanised steel and with one or several outerlayers of strands made from aluminium. See Figures 3a and 3b.

4.4.4 ALUMINIUM ALLOY CONDUCTORS (AAAC)

4.4.4.1 AlMgSi conductorsConductors consisting of several layers of strands made from AlMgSi.

See Figure 2.

4.4.4.2 Al 59 conductorsConductors consisting of several layers of strands made from Al 59. See

Figure 2.

4.5 REQUIREMENTS

4.5.1 STEEL CONDUCTORS

4.5.1.1 StrandStrands shall be manufactured from high strength steel in accordance

with SS 424 08 05.

4.5.1.2 DimensionsConductors shall have dimensions in accordance with SS 424 08 06, See

Table 1.



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4.5.1.3 DesignConductors shall comply with the requirements in accordance with SS

424 08 06.

4.5.1.4 Breaking loadConductors shall comply with the breaking load requirements in

accordance with SS 424 08 06, See Table 1.

4.5.1.5 ResistanceConductors shall comply with the resistance requirements in accordance

with Table 1.

4.5.2 ALL ALUMINIUM CONDUCTOR (AAC)

4.5.2.1 StrandStrands shall be manufactured in accordance with SS-EN 60889.

4.5.2.2 Dimensions

Conductors shall have dimensions in accordance with SS-EN 50182, SeeTable 2.

4.5.2.3 DesignConductors shall comply with the requirements in accordance with SS-

EN 50182, AL1.

4.5.2.4 Breaking loadConductors shall meet the requirements of strength in accordance with

SS-EN 50182, See Table 2.

4.5.2.5 ResistanceConductors shall meet the requirements of resistance in accordance with


4.5.2.6 GreasingWhen greasing of conductors is requested they shall be greased in

accordance with SS-EN 50182 Annex B, Case 4, See Figure 4.

Grease shall meet the requirements in accordance with SS-EN 50326.

4.5.3 ALUMINIUM CONDUCTORS STEEL REINFORCED (ACSR)

4.5.3.1 StrandSteel strands shall be manufactured in accordance with SS-EN 50189

Class ST1A.

Aluminium strands shall be manufactured in accordance with SS-EN

60889.

4.5.3.2 DimensionsConductors shall have dimensions in accordance with SS-EN 50182, See

Table 3.

4.5.3.3 DesignConductors shall meet the requirements in accordance with SS-EN 50182

AL1/ST1A. A core consisting of only one steel strand shall have no

joints.



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4.5.3.5 ResistanceConductors shall comply with the resistance requirements of Table 3.

4.5.3.6 GreasingWhen greasing of the steel core of conductors is requested it shall be

greased in accordance with SS-EN 50182 Annex B, Case 1, See Figure 4.


4.5.4 ALMGSI, ALL ALUMINIUM ALLOY CONDUCTOR, (AAAC)

4.5.4.1 StrandStrands shall be manufactured in accordance with SS 424 08 11

Alternatively shall the strand be in accordance with SS-EN 50183-AL7.

4.5.4.2 DimensionsConductors shall have measurements in accordance with SS 424 08 12,

See Table 4A.

Alternatively shall the conductor have dimensions in accordance with

SS-EN 50182-AL7, See Table 4B.

4.5.4.3 DesignConductors shall comply with the requirements of SS-EN 50182.


SS 424 08 12, See Table 4A.

Alternatively shall the conductor meet the requirements for rated

strength in accordance with SS-EN 50182-AL7, See Table 4B.


SS 424 08 12, See Table 4A.

Alternatively shall the conductor meet the requirements for resistance in

accordance with SS-EN 50182-AL7, See Table 4B.

4.5.4.6 Greasing

When greasing of conductors is requested they shall be greased inaccordance with SS-EN 50182 Annex B, Case 4, See Figure 4.


4.5.5 AL 59, ALL ALUMINIUM ALLOY CONDUCTOR, (AAAC)

4.5.5.1 StrandStrands shall be manufactured in accordance with SS 424 08 13.

4.5.5.2 DimensionsConductors shall have dimensions in accordance with SS 424 08 14, See

Table 5.



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4.5.5.3 DesignConductors shall comply with the requirements of SS-EN 50182.


SS 424 08 14, See Table 5.


SS 424 08 14, See Table 5.

4.5.5.6 GreasingWhen greasing of conductors is requested they shall be greased in

accordance with SS-EN 50182 Annex B, Case 4, See Figure 4.


4.6 TYPE TEST

4.6.1 GENERAL

Type tests are to be performed in accordance with SS-EN 50182 as stated

in clauses 4.6.2 4.6.4 below. In addition for conductors made from Al

59 tests in accordance with clause 4.6.5 shall be performed.

4.6.2 JOINTS IN STRANDS BEFORE STRANDING

This test shall be performed in accordance with SS-EN 50182.

4.6.3 STRESS STRAIN CURVE

This test shall be performed in accordance with SS-EN 50182. All

measurements taken shall be recorded and submitted to the client.Calculated curve of the third degree for the stress respectively strain,

connecting the recorded values of stress strain, including the formulas

shall be included.

4.6.4 BREAKING LOAD


4.6.5 CREEP

This test shall be performed in accordance with SS-EN 61395 and the

parameters shall be in accordance with SS 424 08 14. The creep shall be

measured at intervals of time evenly logarithmically distributed over theentire testing time. All readings of temperature, strain and time shall be

shown in tabular form. The linear regression shall be calculated for all

the measured strain readings. It shall also be calculated for the measured

strain readings from 50 hours after start to the end of the test.

When calculating the linear regression, the value z shall be added to

every reading such that, at the time t=87600 hours (10 years), the creep

will be equal for the two regression curves. Calculated values for kand

b, in addition to the calculated creep from fifty hour to ten years, are to

be presented to the client.

The creep shall be calculated according to the formula:



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bkt*10=

where

= conductor creep during time t

k = point of intersection between the line and the y-axis

b = line slope

t = time for which creep shall be calculated

4.7 SAMPLE TEST

4.7.1 GENERAL

The sample test shall be performed in accordance with SS-EN 50182.

4.7.2 TESTS ON STRANDS BEFORE STRANDING

The tests shall show that strands comply with the requirements of clauses

4.5.1.1, 4.5.2.1, 4.5.3.1, 4.5.4.1 and 4.5.5.1.

4.7.3 CROSS-SECTIONAL AREA


4.7.4 CONDUCTOR DIAMETER


4.7.5 MASS PER UNIT LENGTH


4.7.6 BREAKING LOAD OF STRANDS FROM CONDUCTORThis test shall be performed in accordance with SS-EN 50182.

4.7.7 SURFACE CONDITION

The test shall be performed in accordance with SS-EN 50182.

4.7.8 LAY RATIO AND DIRECTION OF LAY


4.7.9 GREASE CONTENT


4.8 CERTIFICATE OF DELIVERY

4.8.1 GENERAL

The client shall, according to these guidelines, approve the conductor

before delivery. For approval the manufacturer shall show that the

conductor conforms to the guidelines.

The manufacturer shall provide documentation in accordance with

clauses 4.8.2.1-4.8.2.5 for approval.



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4.10 TABLES

TABLE 1 STEEL CONDUCTOR (FE 140)

Diameter Calculated

Strand Cond. Mass Ratedstrength

DC

resistanse1)

Shortcircuit

current2)

Desig-

nationarea

Nos

ofstrands

mm mm kg/km kN /km kA

52 7 3,08 9,24 412 71,4 3,705 3,0

68 7 3,52 10,6 538 93,1 2,837 3,9

89 7 4,02 12,1 702 122 2,175 5,1

105 7 4,36 13,1 826 143 1,849 6,0

142 19 3,08 15,4 1127 194 1,375 8,2

185 19 3,52 17,6 1472 253 1,053 10,7

241 19 4,02 20,1 1920 331 0,8074 13,9284 19 4,36 21,8 2258 390 0,6864 16,4

1) The DC resistance is calculated from the mean value of 192,0 nm

(9,0% IACS) for the individual strand.

2) The short circuit current is the calculated effective value with a

duration of one second at an initial conductor temperature of +30

C and a final temperature of +300 C.

TABLE 2 ALL ALUMINIUM CONDUCTOR (AAC), (AL1)

Diameter Calculated

Strand Cond. Mass Ratedstrength

DC

resistanse1)

Continuous

currentcapacity2)

Short

circuitcurrent3)

Desig-

nationaccord.

EN

Desig-

nationarea

Nos

ofstrands

mm mm kg/km kN /km A kA

454-AL1 454 61 3,08 27,7 1256 74,99 0,06366 406 43,5

594-AL1 593 61 3,52 31,7 1641 97,95 0,04874 433 56,9

774-AL1 774 61 4,02 36,2 2140 123,9 0,03737 483 74,2

911-AL1 910 61 4,36 39,2 2517 145,7 0,03177 519 87,3

1) The DC resistance is calculated from the mean value 28.035 nm

(61.5 % IACS) of the individual strand.

2) The continuous current capacity is calculated for a conductortemperature of +50 C at an ambient temperature of +30C,

frequency 50 Hz, resistivity temperature coefficient 0,00403,

emission factor 0,7, absorption coefficient 0,9, wind velocity 0,6

m/s and at a latitude of 60 (N).

3) The short circuit current is the calculated effective value with

duration of one second at an initial conductor temperature of +50C

and a final temperature of +200C.



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TABLE 3 ALUMINIUM CONDUCTOR STEEL REINFORCED (AL1/ST1A)

Short

circuit

c

urrent

kA

42,2

3)

55,2

3)

71,9

3)

84,5

3)

12,8

4)

21,8

4)

31,0

4)

Con

tinuous

current

capacity

A 381

407

460

493

DC

resistance

/km

0,0

7187

0,0

5503

0,0

4219

0,0

3585

0,3

230

0,1

8960

0,1

1522

Rated

strength

kN

123,8

161,6

207,4

245,8

72,1

2

122,1

116,3

Calcu

lated

Mass

kg/km

1523

1989

2594

3036

658

1121

1231

Cond.

mm

27,7

31,7

36,2

39,3

15,4

20,1

23,2

Core

mm

9,2

4

10,6

12,1

13,1

9,2

4

12,1

10,6

Fe

mm

3,0

8

3,5

2

4,0

2

2,6

2

3,0

8

4,0

2

3,5

2Diameter

Strand

Al

mm

3,0

8

3,5

2

4,0

2

4,3

6

3,0

8

4,0

2

3,1

6

Fe 7 7 7 1

9 7 7 7

Nos

of

strands

Al

54

54

54

54

12

12

32

De

sig-

na

tion

a

rea

4

54

5

93

7

74

9

10

1

42

2

41

3

19

Designation

accordingto

EN

Phaseconductor

402-AL1/52-ST1A

525-AL1/68-ST1A

685-AL1/89-ST1A

806-AL1/102-ST1A

Shieldconductor

89-AL1/52-ST1A

152-AL1/89-ST1A

251-AL1/68-ST1A

1)

TheDCresistanceiscalculatedfrom

themean

value28,2

64nm

(61,%I

AC

S)oftheindividualstrand.

2)

Thecontinuouscurrentcapacityiscalculated

foraconductortemperatureof+50Catanambienttemp

eratureof

+30C,

freque

ncy50Hz,resistivitytemperaturecoefficient0,0

0403,emissionfactor0,7,absorptioncoeff

icient0,9,

3)

Theshortcircuitcurrentisthecalculatedeffectivevaluewithduration

ofonesecondataninitial

conductor

tem

eratureof+50Candafinaltem

eratureof+200C.

4)

Theshortcircuitcurrentisthecalculatedeffectivevaluewithduration

ofonesecondataninitial

conductor

tem

eratureof+30Candafinaltem

eratureof+200C.


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TABLE 4A ALMGSI-CONDUCTOR

Diameter Calculated Continuous Short-Desig-nation

Nosof

Strand Cond. Mass Rated-strength

DC

resistance1)current

capacity2)

circuit

current3)

area strands mm mm kg/km kN /km A kA

454 61 3,08 27,7 1256 125,0 0,06755 393 43,2

593 61 3,52 31,7 1640 157,3 0,05172 419 56,4

774 61 4,02 36,2 2139 197,4 0,03965 471 73,6

910 61 4,36 39,2 2516 232,2 0,03371 503 86,6

1) The DC resistance is calculated from the mean value 30,000 nm (57,5%

IACS) of the individual strand.

2) The continuous current capacity is calculated for a conductor temperature of

+50 C at an ambient temperature of +30C, frequency 50 Hz, resistivity

temperature coefficient 0,0038, emission factor 0,7, absorption coefficient0,9, wind velocity 0,6 m/s and at a latitude of 60 (N).

3) The short circuit current is the calculated effective value with duration of

one second at an initial conductor temperature of +50C and a final

temperature of +200C.

TABLE 4B ALMGSI-CONDUCTOR (AL7)

Diameter Calculated

Strand

Cond. MassRated

strength

DC

resistance1)

Con-tinuouscurrentcapa-

city

2)

Short-circuit-

current3)Desig-nationaccord.

EN

Desig-nation

area

Nosof

strand

mm mm kg/km kN /km A kA

454-AL7 454 61 3,08 27,7 1256 125,0 0,06755 393 43,2

594-AL7 593 61 3,52 31,7 1641 157,3 0,05172 419 56,4

774-AL7 774 61 4,02 36,2 2140 197,4 0,03965 471 73,6

911-AL7 910 61 4,36 39,2 2517 232,2 0,03371 503 86,6




+50 C at an ambient temperature of +30C, frequency 50 Hz, resistivitytemperature coefficient 0,0038, emission factor 0,7, absorption coefficient

0,9, wind velocity 0,6 m/s and at a latitude of 60 (N).





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TABLE 5 AL59-LINOR

Diameter Calculated Continuous Short-Desig-nation

Nosof

Strand Cond. Mass Rated-strength

DC

resistance1)current

capacity2)

circuit

current3)

area strands mm mm kg/km kN /km A kA

454 61 3,08 27,7 1250 113,6 0,06532 399 44,1

593 61 3,52 31,7 1640 142,5 0,05001 426 57,6

774 61 4,02 36,2 2140 178,1 0,03834 478 75,1

910 61 4,36 39,2 2510 209,5 0,03260 511 88,3




+50 C at an ambient temperature of +30C, frequency 50 Hz, resistivity

temperature coefficient 0,0039, emission factor 0,7, absorption coefficient0,9, wind velocity 0,6 m/s and at a latitude of 60 (N).





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FIGURE 4 CONDUCTORS, GREASING

Case 1 Case 4

Documents

Ohtl Hi Voltage Conductors Tr 5 04e 080709 Rev A