Single Core 38/66kV TR-XLPE Insulated

Single Core 38/66kV TR-XLPE Insulated
Ergon Energy Corporation Limited
Technical Specification for Single
Core 38/66kV TR-XLPE Insulated
Underground Cable
ETS04-03-01
Specification ETS04-03-01 Ver 1
Ergon Energy Corporation Limited ABN 50 087 646 062
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
Contents
1.
2.
Purpose and Scope...................................................................................................... 1
1.1
General ............................................................................................................... 1
1.2
Goods to be supplied .......................................................................................... 1
1.3
Installation Design Parameters ........................................................................... 1
1.4
Special Conditions .............................................................................................. 1
References .................................................................................................................... 1
2.1
3.
Applicable Standards .......................................................................................... 1
Drawings ....................................................................................................................... 2
3.1
Drawings by the Purchaser ................................................................................. 2
3.2
Drawings by the Tenderer ................................................................................... 2
4.
Service Conditions....................................................................................................... 2
5.
Design and Construction ............................................................................................ 3
6.
5.1
General ............................................................................................................... 3
5.2
Core Conductors ................................................................................................. 3
5.3
Insulation............................................................................................................. 3
5.4
Water Blocking .................................................................................................... 3
5.5
Moisture Barrier .................................................................................................. 4
5.6
Metallic Screen ................................................................................................... 4
5.7
Non -Metallic Sheath ........................................................................................... 4
5.8
Protection from Insect Attack .............................................................................. 4
5.9
Cable Markings ................................................................................................... 4
5.10
Sealing of Cable Ends ........................................................................................ 4
5.11
Optic Fibres......................................................................................................... 4
Performance and Testing ............................................................................................ 6
6.1
General ............................................................................................................... 6
6.2
Tests on Completed Cable.................................................................................. 7
7.
Risk Assessment ......................................................................................................... 7
8.
Quality Assurance........................................................................................................ 7
8.1
Purchasers Policy ............................................................................................... 7
i
Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
8.2
9.
Documentary Evidence ....................................................................................... 7
Samples ........................................................................................................................ 8
9.1
Production Samples ............................................................................................ 8
10. Packaging and Marking ............................................................................................... 8
10.1
General ............................................................................................................... 8
11. Service Performance ................................................................................................... 9
12. Reliability ...................................................................................................................... 9
12.1
Service Life ......................................................................................................... 9
12.2
Evidence in Support of Reliability ........................................................................ 9
13. Training ......................................................................................................................... 9
14. Environmental Considerations ................................................................................. 10
15. Information to be Provided ....................................................................................... 10
15.1
Specific Technical Requirements ...................................................................... 10
15.2
Checklist of Supporting Documentation ............................................................ 10
16. Attachment 1 – Technical Details ............................................................................. 11
17. Attachment 2 – Underground Cable Current Rating ............................................... 14
18. Attachment 3 – Technical Documentation Checklist .............................................. 15
ii
Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
1.
Purpose and Scope
1.1
General
This specification sets out the technical requirements for the design, manufacture, testing at
works, supply and delivery of single core 38/66kV tree-retardant cross-linked polyethylene
(TR-XLPE) underground cable.
1.2
Goods to be supplied
Cable to be supplied:
1. 1Core - 630mm2 Cu or alternatively 1000mm2 Al – 38/66 (72.5) kV TR-XLPE
insulated, insect protected underground cable.
2. 1Core - 630mm2 Cu or alternatively 1000mm2 Al – 38/66 (72.5) kV TR-XLPE
insulated, insect protected underground cable incorporating optic fibre
1.3
Installation Design Parameters
For purposes of calculation the following installation parameters may be assumed:







Cables will be direct buried in a touching trefoil arrangement or in PVC conduits
The cables may be single-point bonded or solidly bonded.
Depth of burial will be - 1200mm
Maximum Soil Temperature will be - 350C
Maximum ambient air Temperature - 450C
Soil Thermal Resistivity will be – 1.2 0C-m/watt
Nominal Short Circuit Duty of Cable Screen - 25kA for 1 second
Also refer to the clause 4, Service Conditions.
1.4
Special Conditions
The area in which the cable will be installed is home to subterranean termite, Mastotermes
darwiniesis and the coastal brown ant, Pheidole megacephala. A protective jacket has been
specified for the cable.
2.
References
2.1
Applicable Standards
The cables shall be constructed, manufactured and tested in accordance with the relevant
parts of the following Standards and all amendments issued from time to time except where
varied by this specification.
STANDARD
TITLE
AS1125
Conductors in insulated electric cables and flexible cords
AS1429
Electric cables - Polymeric insulated
AS1660
Test methods for electric cables, cords and conductors
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Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
STANDARD
TITLE
AS1931
High-voltage test techniques
TS 008
ACA Technical Standard 008 – Requirements for Authorised
Cabling Products.
International Telecommunications Union –Telecommunications
(ITU-T)
Recommendation G.652
AS2857
Timber drums for
conductors
insulated
electric
cables
AS3983
Metal drums for insulated electric cables and bare conductors
AS/NZS 3808
Insulation and sheathing for electric cables
AS/NZS ISO
9001
Quality management systems – requirements
ASTM D1603
Carbon black in ethylene plastics
3.
Drawings
3.1
Drawings by the Purchaser
and
bare
There are no drawings attached to this specification.
3.2
Drawings by the Tenderer
The Supplier shall supply with the Invitation to Offer, drawings, sketches or pamphlets
showing the cross sections of the cable in a similar manner to that shown in AS1429.2.
The various components of the cable shall be labeled and dimensioned. The overall
diameter of the cable and the diameter over the insulation shall be given.
4.
Service Conditions
The conditions under which the cables will be required to operate are:
Installed, directly buried in fine grain bedding material, or, in PVC conduits at a
nominal depth of up to 1 200 mm, with cable ends rising up concrete or timber
poles and exposed to direct sunlight.
Ambient air temperature not exceeding 45oC as determined by a shaded
thermometer.
Ambient ground temperature not exceeding 350C.
An altitude not exceeding 1000 metres above sea level.
A high humidity (90%) combined with a high temperature (45oC) followed by a
sudden drop in temperature of up to 10oC.
Exposed sections of cable will be subject to the following additional service
conditions:
Solar radiation intensity of 1 100W/m with high ultraviolet content
Tropical summer storms with high winds and an annual rainfall in excess of 1
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Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
500mm.
Areas of coastal salt spray and/or industrial pollution with equivalent salt
deposits densities in the range of 2.0 - 3.0g/m².
The power cable will operate in Ergon Energy’s three phase, 50 Hertz 66kV subtransmission network which has the star point effectively earthed. The lightning impulse
insulation withstand level of the system is 350 kVp.
5.
Design and Construction
5.1
General
The cable shall be constructed and manufactured in accordance with AS1429.2 accept
where specified otherwise in this specification.
During the contract period, the Supplier shall not change the design, manufacturing process
or compounding of the materials without the written approval of the Purchaser.
5.2
Core Conductors
The conductor shall have a nominal cross-sectional area of 630mm2 for copper conductor
or 1000mm2 for aluminium conductor. The conductor shall be comprised of multi-stranded
circular, compacted or compressed, plain annealed copper wires or aluminium. The
individual wires shall be of the same nominal diameter before stranding into the compacted
circular formation. Successive layers of wires shall have opposite directions of lay.
Any lubricants used during compaction of the conductor shall be removed from the
conductors prior to application of the core screen. Greasing of the conductors is not
permitted.
5.3
Insulation
The insulation shall be tree-retardant cross-linked polyethylene (TR-XLPE) complying with
AS3808.
The insulation shall be applied by an extrusion process; simultaneously with the semiconductive conductor and insulation screens within one crosshead.
It is desirable that the process has facilities at the point of extrusion to monitor and control
the thickness of the extruded screens and the insulation and the concentricity of the cable
(this may be done by X Ray scanning and control or similar techniques).
Suppliers must state in the tender submission how they will control the concentricity of the
cable and the thickness of the extruded cable screens and the cable insulation. This will be
considered in assessing tenders.
5.4
Water Blocking
Semi conducting water blocking tapes shall be applied over the insulation screen.
The Tenderer shall submit with their tender submission the results of tests carried out in
accordance with Appendix C of AS 1429.2 demonstrating the effectiveness of waterblocking method and materials proposed.
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Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
5.5
Moisture Barrier
The metal sheath comprising the moisture barrier shall be lead alloy E in accordance with
Section 2.10 of AS1429.2.
5.6
Metallic Screen
The metallic screen (including the fault duty of the lead sheath, moisture barrier) shall be
designed and constructed for a system fault level of 25kA for 1sec.
The screen wires shall be applied over the bedding of semi conductive tapes applied over
the moisture barrier.
5.7
Non -Metallic Sheath
The non-metallic sheath of the cable shall be a composite sheath consisting of an inner
layer of 5V-90 PVC and an outer layer of HDPE in accordance with Clause 2.13 of
AS1429.2.
The HDPE sheath shall have a minimum shore D hardness of 60 and a density of not less
than 0.955 gm/cm3 and shall be black in colour. A graphite coating shall be applied on the
over-sheath to allow for present and future testing of the integrity of the cable sheath.
5.8
Protection from Insect Attack
The insect protection layer consists of a continuous UV stabilised nylon jacket (polyamide
12) of radial thickness of not less than 0.8mm. It must have a smooth glossy surface, free
from defects of scratches. The insect protection layer will be extruded over the PVC sheath
and covered by the extruded HDPE sheath. Full details of nylon insect protection jacket
shall be included with the tender including evidence of effectiveness.
The nylon jacket must be capable of being removed without damage to the PVC sheath.
The jacket colour shall be black.
Alternative methods of insect protection will not be considered.
5.9
Cable Markings
Cable identification markings and meter markings shall be provided on the outer sheath of
the cable in accordance with Clauses 2.15 and 2.16 respectively of As 1429.2.
5.10
Sealing of Cable Ends
Cables shall be free of water or corrosion at the time of dispatch from the manufacturer's
premises.
All cable ends shall be sealed to prevent moisture ingress. This shall seal the individual
layers of the cable construction from one another to avoid water transfer to the conductor
strands in the event of damage to the outer sheaths.
Tenderers shall provide full details of the method used for sealing the cable ends with the
tender documentation.
5.11
Optic Fibres
5.11.1 General
The cables shall be completely metal free and shall comply with the product approval
requirements of ACA Technical Standard 008.
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Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
The optical fibre cable shall have optic fibres in accordance with ITU-T Recommendation
G.652.
The cable shall be comprised of 4 optic fibres laid up together with strengthening member/s
and enclosed in a protective sheath, embedded in the lay of the copper screen wires.
The inclusion of the optic fibre cable shall not cause any protrusion of the external profile of
the completed power cable that would attract damage to the optic fibre during cable
installation.
The Tenderer shall provide detail of the means employed to ensure integrity of fibre during
cable installation.
Alternative arrangements for incorporating the fibres into the cable may be considered and
the Tenderer must provide full details of any alternative offer in the tender submission.
5.11.2 Optical Fibre Requirements
The cable will be comprised of 2 multi mode and 2 single mode fibres with the following
characteristics.
5.11.2.1
5.11.2.2
Multimode
The multi mode cable will be used for Distributed Temperature Sensing
(DTS). Alternative characteristics may be considered if the tenderer can
demonstrate better performance for DTS. The tenderer must provide full
details of any alternative offer in the tender submission.
Transmission wavelength
850 nm and suitable for 1300 nm
Mode field diameter
50 +- 0.m at a
wavelength of 850 nm.
Bandwidth
>500Mhz at 850 nm and >500Mhz at
1300 nm
Numerical aperture
0.2 +- .015
Attenuation
Not greater than 3.0 dB/km at an
optical wavelength of 850 nm and 1.0
dB/km at 1300 nm
Core Eccentricity
less than 6%
Optical cladding diameter
125 m  2.0m
Life span
Greater than 50 years
transmission
Single Mode
The characteristics of each single mode optical fibre in the optical fibre cable
will adhere to the ITU-T’s recommendation G.652 and as follows:
Transmission wavelength
1 310 nm and suitable for 1 550 nm
Mode field diameter
9.2 +- 0.4m at a transmission
wavelength of 1310 nm.
10.4+- 0.8m
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Ergon Energy Corporation Limited ABN 50 087 646 062
at
a
transmission
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
wavelength of 1550nm.
Attenuation
Not greater than 0.40 dB/km at an
optical wavelength of 1310 nm and
0.30 dB/km at 1550 nm
Total dispersion
Not greater than 6 ps/(nm . km) at
optical wavelength in the range 1270
nm to 1360 nm for a zero dispersion
wavelength of 1310 nm and 20ps/
(nm . km) at 1550 nm
Optical cladding diameter
125 m  2.0m
Life span
Greater than 50 years
5.11.3 Fibre Coatings
The secondary coating is required to be a tight UV Acrylate coating and shall be easily
removed by mechanical means for jointing purposes. Preference is likely to be given to
fibres, which have a primary buffer coating of 250  15 micron low modulus UV, cured
Acrylate material. Thus Tenderers are encouraged to offer prices for totally UV cured
Acrylate coated fibres where possible. Tenderers may offer more than one primary, buffer
coating material. In such cases Tenderers should provide as much information as possible
regarding the physical, mechanical, and transmission performance of such fibres, with
particular regard to the relative susceptibility to hydrogen degradation compared with UV
Acrylate coated fibre.
5.11.4 Identification of Individual Fibres
The colours of individual fibres as well as other cable components shall allow for the unique
identification of individual fibres within the cable.
5.11.5 Factory Joints
The fibres shall not be jointed within any un-installed cable length without prior approval by
the Purchaser.
5.11.6 Point Loss in Un-installed Cable
5.11.6.1
Multi Mode
For the un-installed optical fibre cable there shall be no point loss (of any
cause) in any single fibre, whose average two way attenuation exceeds 0.05
dB at 850 nm and 1300 nm.
5.11.6.2
Single Mode
For the un-installed optical fibre cable there shall be no point loss (of any
cause) in any single fibre, whose average two way attenuation exceeds 0.05
dB at 1310 nm and 1550 nm.
6.
Performance and Testing
6.1
General
The cable shall be tested in accordance with the section 3 of AS1429.2
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Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
Type Test Certificates to AS/NZS1429.2 shall be submitted with the tender. The contactor
must advise Ergon Energy’s responsible officer of any changes in the composition of the
materials and processes used for manufacture of the cables and Ergon Energy’s
responsible officer will decide on the necessity for a new Type Test.
Sample and Routine test certificates to AS/NZS1429.2 shall be supplied with each delivery.
In addition the supplier is required to submit all Sample and Routine test certificates relating
to the cables supplied under the contract, including the Purchaser's Order Numbers and the
associated cable drum numbers and lengths recorded on a compact disc on completion of
the contract.
6.2
Tests on Completed Cable
The following Routine tests will be carried out, on each completed drum of cable, in addition
to those required by A/NZS1429.2.
 An insulation resistance test between the cable conductor core and the metallic
screen. The test will be carried out at a voltage level of 10kV DC and the results
recorded after 10 minutes.

An insulation resistance test between the metallic screen and the graphite coating
covering the outer sheath cable. The test will be carried out at a voltage level of
2.5kV DC and the results recorded after 10 minutes.
The results will be recorded and submitted with the results of other “Routine” tests
7.
Risk Assessment
There is no requirement for manufacturer provided safety risk assessments for the items
covered by this specification.
8.
Quality Assurance
8.1
Purchasers Policy
It is the Purchaser’s policy to procure goods, equipment and services from sources that
demonstrate the ability to supply quality products.
8.2
Documentary Evidence
Tenderers are required to submit evidence that the design and manufacture of the cable is
in accordance with AS/NZS ISO 9001 and shall include the Capability Statement
associated with the Quality System Certification.
If the Tenderer is a non-manufacturing supplier, the documentary evidence shall include the
quality system certifications of both the supplier and the manufacturer.
Tenderer's attention is drawn to MP000801F100: Management Systems Information
Schedule (Form) which forms an integral part of this specification
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Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
9.
Samples
9.1
Production Samples
When requested, production sample(s) shall be submitted to assist in the evaluation of the
offer.
10.
Packaging and Marking
10.1
General
Cable may be supplied on either timber drums complying with the requirements of AS2857
or steel drums complying with the requirements of AS3983. The spare length of cable shall
be supplied on a steel drum and the cost of this steel drum shall be included in the tender
price.
The nominal length of cable on each drum shall be 500m for tendering purposes. The
lengths of cable required on each drum will be specified on the order.
The cable drums shall be sufficiently sturdy to ensure that the cable is delivered
undamaged, giving due consideration to the method of transportation and the distances
involved.
The cable on the drum shall be protected by suitable external lagging to ensure that it is
delivered undamaged giving due consideration to the methods and distance of
transportation and handling. Further, additional cushioning material such as “corflute” shall
be provided between the cable and the external laggings in order to minimize the risk of
cable sheath damage during the removal of the latter.
The tenderer shall provide details concerning the method lagging to be used.
Drums must be of suitable quality to withstand without deterioration a minimum of twentyfour (24) months exposure to all types of weather conditions during outdoor storage.
Each drum of cable shall be indelibly and legibly marked on both flanges with the following
information:
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
Manufacturer’s name
Drum reference number
ERGON ENERGY
Contract number (to be advised)
Size and complete description of the cable
Year of Manufacture
Length of the cable wound onto the drum
The gross weight of the cable and the drum
An arrow with the words “ROLL THIS WAY” to indicate the direction the drum may
be rolled on its flanges (if relevant)
Any special handling or storage instructions
Should the cable be supplied from overseas manufacturers, then it is mandatory that all
conditions and inspections required by the Australian Quarantine Act be met and that all
these costs be included in the tendered price. In particular, timber drums must be
fumigated with methyl bromide with a concentration of 48 grams per cubic metre for 24
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Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
hours at 21ºC. The supplier shall ensure that the procedure does not produce any
deleterious effects to the cable supplied on the drum.
11.
Service Performance
Suppliers shall state:
a)
b)
c)
The period of service achieved by the items offered within Australian
service conditions;
Australian electricity supply authorities who have a service history of the
items offered;
Contact names and phone numbers of relevant employees of those
supply authorities who can verify the service performance claimed.
The suppliers are also requested to submit proposals for improving the service life
of the cables.
12.
Reliability
12.1
Service Life
Comments on the reliability and performance of the items offered for a minimum service life
of 50 years under the specified environmental conditions, shall be submitted with the offer.
12.2
Evidence in Support of Reliability
Such comments shall include evidence in support of the reliability and performance claimed
including information on Failure Mode and Effect Analysis.
13.
Training
Training material in the form of drawings, instructions and/or audio visuals shall be provided
for the items accepted under the offer.
This material shall include but is not limited to the following topics:









Handling
Storage
Installation, including cable hauling and methods of attachment of haulling rope to
cable cores
Maintenance
Environmental performance
Electrical performance
Mechanical performance
Disposal
Cable rating software
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Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
14.
Environmental Considerations
Suppliers are required to comment on the environmental soundness of the design and the
materials used in the manufacture of the items offered. In particular, comments should
address such issues as recyclability and disposability at the end of service life.
15.
Information to be Provided
15.1
Specific Technical Requirements
The specific technical requirements for the items offered shall be as stated in Attachments
1 and 2 of this specification. The tenderer shall fill in all data requested by these
Attachments and shall guarantee such data.
15.2
Checklist of Supporting Documentation
Attachment 3 details a checklist of supporting technical documentation which is required to
be submitted with the tender.
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Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
16.
Attachment 1 – Technical Details
PARTICULARS
RESPONSE
Rated Voltage
(kV)
Conductor material
(mm2)
Cross-sectional area of conductor core
Number and size of strands in each conductor core
Nominal diameter of conductor core
(mm)
Extruded semi-conductive conductor screen material
Average radial thickness of semi-conductive conductor screen
(mm)
Minimum average radial thickness of TR-XLPE insulation
(mm)
TR-XLPE material designation
Method of curing insulation
Semi-conductive screen material over the insulation
Average radial thickness of the semi-conductive insulation screen
(mm)
Nominal diameter over insulation
(mm)
Water blocking tape material
Average thickness of water blocking tape
(mm)
Metallic sheath material
Thickness of the metal sheath
(mm)
Number and size of strands in the copper wire screen
Is the material annealed copper
Yes/No
Minimum radial thickness of the composite sheath over the screen wires /
water blocking barrier
(mm)
Grade of PVC
Radial thickness of PVC sheath
Shore D hardness of HDPE material
Radial thickness of HDPE sheath
Minimum radial thickness of nylon jacket
(mm)
Grade of Nylon
Maximum continuous conductor operating temperature of the cable(deg C)
Three-phase symmetrical fault rating of conductor for one second
D.C. Resistance of conductor at 20oC
(kA)
(Ohms/km)
A.C. Resistance at maximum conductor operating temperature (Ohms/km)
DC resistance of the copper wire screen at 20oC
(Ohms/km)
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Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
PARTICULARS
RESPONSE
Inductance per conductor when installed in trefoil and touching
o
Capacitance of conductor to screen at 20 C
(mH/km)
(mF/km)
Positive sequence impedance per phase in R+jX format @ maximum
conductor operating temperature when installed trefoil and touching
(Ohms/km)
Zero sequence impedance per phase in R+jX format @ maximum
conductor operating temperature when installed in trefoil and touching
(Ohm/km)
Fault rating of screen for one second
(kA)
Power frequency withstand voltage five minutes
(kVrms)
Overall diameter of cable (single core)
(mm)
Overall diameter of 3 single core cables in trefoil formation
(mm)
Minimum bending radius
(a) pulling
(mm)
(b) setting
(mm)
Maximum pulling tension - Stocking grip on sheaths (straight pulls) (kN)
Maximum pulling tension - Stocking grip on sheaths (pulling around bends
with minimum recommended bending radius)
(kN)
Mass of cable
(tonnes/km)
Cable drum size
(F x B x W)
Cable route length per drum
(m)
Spindle hole diameter
(mm)
Gross mass
(kg)
Optic Fibre Details
Multi Mode:
Mode field diameter at 850 nm
(µm)
and Tolerance
(%)
Attenuation (at zero fibre tension) At 850 nm
(dB/km )
At 1300 nm
(dB/km)
Maximum permissible fibre strain
(% strain)
Fibre Proof test strain
(% strain)
Attenuation (at Maximum permissible fibre strain) At 850 nm
(dB/km)
At 1300 nm
(dB/km)
Optical cladding diameter
(µm)
and Tolerance
(%)
Dispersion 1270 to 1340 nm
(ps/km.nm)
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Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
PARTICULARS
1 550 nm
RESPONSE
(ps/km.nm)
0
Maximum continuous operating temperature
C
Minimum bending radius for coated optical fibre Under no tension
mm
Under maximum tension
mm
Single Mode:
Mode field diameter at 1310 nm
µm
and Tolerance
%
Attenuation (at zero fibre tension) At 1310 nm
dB/km
At 1550 nm
dB/km
Maximum permissible fibre strain
% strain
Fibre Proof test strain
% strain
Attenuation (at Maximum permissible fibre strain)
At 1310 nm
dB/km
At 1550 nm
dB/km
Optical cladding diameter
µm
and Tolerance
%
Dispersion
1270 to 1340 nm
ps/km.nm
1 550 nm
ps/km.nm
Maximum continuous operating temperature
Minimum bending radius for coated optical fibre Under no tension
mm
Under maximum tension
mm
Maximum protrusion of outer sheath due to optic fibre cable
mm
Manufactures Name
Manufacturers Address
SIGNATURE OF TENDERER:
______________________________________
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Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
17.
Attachment 2 – Underground Cable Current Rating
The tenderer shall provide details of the "Summer" and "Winter" current ratings of the
cables offered under the installation conditions specified below:
INSTALLATION CONDITIONS
Ground Thermal Resistivity
1.2oC m/w
Ground Temperature
35oC
Summer
20oC
Winter
45oC
Summer
Air Temperature
o
25 C
Burial Depth
Winter
1200 mm
Note: Tenderers are required to nominate the designed maximum continuous current
rating of the cable
Tenderers are also required to additionally nominate the Emergency rating of the cables
which is defined as the maximum current carrying capacity of the cable for a period of 2
hours immediately following having been loaded for 70% of the nominated maximum
continuous load.
ITEM
No.
SEASON
SINGLE CIRCUIT, DIRECT BURIED
SINGLE CIRCUIT, BURIED in
CONDUIT *
Maximum
Continuous
Current Rating
(amps)
Maximum
Continuous
Current
Rating
(amps)
Emergency
current
rating
(amps)
Emergency
current
rating
(amps)
DOUBLE CIRCUIT, DIRECT
BURIED @ 1.0 M SPACING
Maximum
Continuous
Current
Rating
(amps)
Emergency
current
rating
(amps)
DOUBLE CIRCUIT, BURIED in
CONDUIT @ 1.0 M SPACING *
Maximum
Continuous
Current
Rating
(amps)
Emergency
current
rating
(amps)
Solid bonded screen
a
Summer
Winter
b
Summer
Winter
Single point bonded screen
a
Summer
Winter
b
Summer
Winter
* Calculations to be based on installed in trefoil arrangement in light duty PVC conduits of
150 nominal size.
SIGNATURE OF TENDERER:
_________________________________
Page 14 of 15
Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
Technical Specification for Single Core 38/66kV
TR-XLPE Insulated Underground Cable
Attachment 3 – Technical Documentation Checklist
18.
CLAUSE
Ref.
PARTICULARS
Response
Have full and comprehensive details been submitted WITH the tender documents
associated with each of the following items?
3.2
Drawings showing the details of the cables offered
Yes/No
5.3
Method of controlling the thickness and concentricity of
screen/insulation
Yes/No
5.10
Sealing of cable ends
Yes/No
5.4
Details of water blocking systems including test reports
Yes/No
5.11
Detail of the means employed to ensure integrity of fibre
during installation of cable
Yes/No
Type test reports included in tender documentation
Yes/No
Availability of routine and sample test reports on CD
Yes/no
8
Quality systems of BOTH the TENDERER and the
MANUFACTURER
Yes/No
10
Method of cable protection on the drum
Yes/No
11
Service Performance including any proposals
improving the service life of the cable
12
Reliability
Yes/No
13
Training Materials
Yes/No
14
Environmental Considerations
Yes/No
15
Technical Details- Completed Attachments 1,2 and 3
Yes/No
6
for
Yes/No
NAME OF TENDERER:
ADDRESS OF TENDERER:
SIGNATURE:
DATE:
FOR AND ON BEHALF OF TENDERER
______________________
Page 15 of 15
Ergon Energy Corporation Limited ABN 50 087 646 062
Specification ETS04-03-01 Ver 1
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