115kV Straight & Stop Joint On LPLF, PILC Cables In Cable Vault

By Chris Dodds on 18th August, 2015

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115kV Straight & Stop Joint On LPLF, PILC Cables In Cable Vault

This series of excellent photographs taken from site have been kindly provided by : 

  • Douglas Page
  • Instructor & Cable Splicer at Hydro One (Training and Development Services)

"It must be said, cable jointing is a team effort with multiple cable splicers, confined space entry personnel, there's a "kitchen cook" that is outside the space, that keeps tapes and oil hot, hands us kettle after kettle of flushing oil, certain size rolls and tapes before we know we need them - there are very few splices that are completed by one person," adds Douglas.

HV-EHV Cable Splicing Team : Douglas Page, Peter Hatziiounou,  Craig Dowling, Walter Ryan and Bob McViegh in the "kitchen".

115kV Straight & Stop Joint On LPLF, PILC Cables In Cable Vault

 

Pictured : Classic "roman arch" conductor, 115kV LPLF, PILC Transmission Cable (Low Pressure Liquid Filled, Paper Insulated Lead Covered).

Originally installed in the 1960's the sequence shows back to back cable splices in a 16 foot cable vault - the cable jointing was required after the original cable splice became damaged in an explosion.

The images cover the cable preparation and jointing stages required to reinstate the 115kV cable.

115kV Straight Joints

Conductor insert to prevent crushing the oil duct during cable crimping :

Cable Jointing

Cable Jointing

Cable Jointing

Cable Jointing

Cable Jointing

Cable polishing :

Cable Polishing

Cable Polishing

Cable Polishing

Cable Polishing

Hand taping by the cable splicer to restore cable to "factory insulation diameter" :


Cable Jointers

Cable Jointers

Cable Jointers

Cable Jointers

Cable Jointers

HV Joint

HV Joint

HV Joint

HV Joint

HV Joint

After build up is complete, "carbon black" is added - this is the semi-conductive screen in modern cable manufacture :

Jointing Cables

Jointing Cables

Jointing Cables

Jointing Cables

In the background is the completed insulated cable splice - the EHV cable splicers then had to make the 115kV stop joint shown in the preceeding images about 18" to 24" distant from the straight joint on the same cable to allow the installation to be accommodated within the confines of the cable vault.
 

Cable Joint

 

  • Further Reading

EHV Cable Splicing - 115kV Stop Joint (Taped) Flickr Album

Photoblog - Water Treeing in High Voltage Cables : A 230kV HPPT Termination Repair

 

Thorne & Derrick Specialist Electrical Distributor

Established since 1985, T&D distribute the most extensive range of LV, MV & HV Cable Jointing, Terminating, Pulling & Installation Equipment - contact us today for a competitive quotation.

Key Products : MV Joints & Terminations, Cable Cleats, Duct Seals, Cable Transits, Underground Cable Protection, Jointing Tools, Feeder Pillars, Cable Duct, Earthing & Lightning Protection, Electrical Safety, Cable Glands, Arc Flash Protection & Fusegear.

Distributors for : 3M, Pfisterer, Nexans Euromold, Elastimold, Catu, Roxtec, Emtelle, Centriforce, Lucy Zodion, Alroc, Hivotec, Cembre, Prysmian, Ellis Patents, ABB & Furse.

Cable Joints Terminations Tools Cleats

 

Invitation

Thorne & Derrick are inviting you to join LinkedIn’s fastest growing Discussion Group : Low & High Voltage Power, Cabling, Jointing, & Hazardous Area Electricals (LV-HV).

Discussion subjects include cable installations, cable jointing, electrical substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.

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Category:  Cable Jointing - PhotoBlog

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