nktcables presentation opgw&ppc&accessories lecture
TRANSCRIPT
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Vers. 1/August 2010 1
OPGW / OPPC and Accessories
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Vers. 1/August 2010 2
OPGW / OPPC and accessories
nkt cables products
Optical fibres in general
Quality management
Accessories
References
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Vers. 1/August 2010 3
Complete OPGW / OPPC solutions
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Optical Phase Conductor(OPPC)
Optical Ground Wire(OPGW)
Metallic Aerial Self Supported(MASS)
OPGW / OPPC
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Optical Ground Wire (OPGW) is used onoverhead transmission- and distribution lines
OPGW replaces the ground wire
Functions of OPGW:
1) Fault-current protection
2) Lightning protection
3) Communication
OPGW What is it used for?
OPGW
MASS
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Optical Phase Conductor (OPPC) based on the same cable technology as OPGW
Replacement of phase conductors
Functions of OPPC:
1) transport of energy
2) Communication
3) Line Monitoring
Special accessories termination units Required to separate optical fibres from
HV- to Zero-potential !!!
nkt cables supplies OPPC incl. accessories up to 420kV
OPPC What is it used for?
OPPC
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Headline
Have to be resistant against stress of
Installation Ice loads Temperature change Lightning impact Short circuit currents Wind loads
Therefore our OPGW / OPPC designs provide
OPGW / OPPC
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Headline
High fibre excess length of approx. 5, to compensate high strain stresses in case of strong ice- or wind loads
All materials are highly corrosion resistant
High mechanical flexibility, avoiding long term fatigue and breaks of the wires and the optical fibre unit, in case of high vibration stress
Our design features
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Headline
One to One replacement No reinforcement of tower static
High mechanical flexibility Easy installation
Wire characteristics as Ground/Phase wire Allows exisiting tools for line engineering
High reliability like conventional ACSR Standard maintenance of transmission line
Our design advantages
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OPGW / OPPC designs
Opticalfibres
Stainlesssteeltube
Optical fibres
Stainlesssteeltube
Stranded tube design Central light tube design
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Vertical integration / used standards
Our production facilities comprise
Fibre colouring
Drawing of aluminium wires
Manufacturing of stainless steel tube with optical fibres
Stranding
Test laboratories
...manufactured and tested according to latest international standards
EN 187 200 / IEC 794-4-1 / IEEE 1138
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Colouring
Coating
Core
Cladding
n2
n1n2
Optical fibres (in a nuts shell)
Made of glass
Different optical densityin core and cladding
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Fibres used in nkt cables designs
All types of fibres can be integrated in our:
OPGW / OPPC designs
Used for long transmission distance:
Singlemode step index fibres; SMF (G.652)
Non Zero Disperion Shifted Fibres, NZDS (G.655)
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Headline
Transmission parametres of optical fibres
Most important fibre characteristics are...
Fibre attenuation causing loss of signal energy Transmission distance is limited
Dispersion causing spread of signal Transmission capacity via long distances is lower
State-of-the-art fibres Highest quality Lowest transmission limiting parametres
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Vers. 1/August 2010 15
Quality
Check
System
Testing
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Our routine checks
Before shipping all OPGW /OPPC are tested concerning:
Mechanical and electrical design parameters
Attenuation with OTDR (each fibre; 1310nm and 1550nm)
Complete test documentation is presented to the customer
Full material and process tracebility
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Headline
Our environmental type testsIncluding all possible environmental stress events
Tensile tests
Temperature tests from - 45C to + 80C
Aeolean vibration test
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Our electrical type testsConsider all electrical impacts
Short circuit test according to data sheet value of respective design
Worst case lightning current
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Fittings and accessories
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Vers. 1/August 2010 20
2)
OPGW joint box technology
with Standard technique for up to144 splices
or with fibre management forup to > 288 splices
Made of an aluminium housing
highest resistance against
- environmental stress
- external impacts (e.g. shotgun)
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2)OPGW joint box technology
One hood joint for all OPGW designsand diameters
Quick and easy to install
Low installation cost
Reduced number of single components
Easy to order
No risk of missing components
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2)OPGW joint box tower fixing
Joint box tower fixing
Clamping for corner
Clamp bracket for diagonal
Clamping for tower pools
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FOC into Comms Room and OTS Controller (VALCAP)
TransmissionTelcom
OPPC
OPPC termination unit
OPPC Straight Joint
OPPC - Accessories
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Available voltage levels of OPPC termination units:
- 36 kV- 72,5 kV- 145 kV- 245 kV- 420 kV
For the highest pollution severity level IV
OPPC Accessories Termination units
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2)Fittings and mounting materials
Our OPGWs / OPPCs are compatible with:
Spiral suspension and tension fittings
Standard clamp technology
We recommend:
To select the right fitting dimension with the respective supplier
To take care of the respective installation recommendations with respect to the selected installation material
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OPGW references
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OPGW / OPPC accessories references
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Thank you for your attention!
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