Jointers Blogs
LSF Mains Straight Resin Filled Joint 185-300sqmm 4 Core SNE
September 7th, 2020Image: Daniel Betts – 33KV 11KV LV Cable Jointer at Western Power Distribution
Pictured: LSF Mains Straight Resin Filled Joint 185-300sqmm 4 Core SNE
Resin Filled Joint
The 3 part resin cable joint shows the neutral conductor with the blue core at the bottom of the cable joint. The earth wires from both sides of the cable joint are in a BCNE connector with an equalisation bond and copper earth tail – they are required to extend out from the connector 5mm either side of the cable. A black mastic water block is wrapped around the earth tail by the cable jointer.
Jointers blog
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MV Cable Jointing & Some Jointers Tips Using 3M Scotch Tapes
September 7th, 2020
Thorne & Derrick | Supplying 3M Scotch Tapes to the Electrical Industry
Today Levingston George, Lead Specialist Electrical Engineer at AM/NS Calvert in Alabama shares some cable jointing tips using 3M Scotch Tapes.
Levingston George has over 40 years of experience within the construction, maintenance and utilities industries – a Certified High Voltage Cable Splicer/Lineman and industrial electrician having worked in more than 26 countries on multi-million dollar projects. 
Scotch
Levingston kindly shares some “tips n tricks” using 3M Scotch Electrical Tapes in the medium voltage power industry.
“In cable splicing and jointing all cable insulation needs to be sanded, be it XLPE or EPR insulation.”
“A good rule of thumb is “cleanliness is the rule and the cleaner the cable joint the better it will operate and test.”
“Many jointers do not understand the requirement of the semi-con screen being square and perfectly cut. SRM (stress relief material) in many of the splicing kits is often disregarded – and then the cable fails. I have also noted that many cable jointers use indenter crimp tools and they forget to fill the voids left by the crimping tool.”
“Then the butt splice has air voids and this leads to cable failure. If using an indenter type crimp tool always fill the voids created by the tool with mastic. I have found Scotch 2229 Mastic Tape to be effective for the application. Also 600 volt butt splices should never be used on medium voltage cable – the cable should be chamfered at the butt splice and the butt splice itself (MV and HV butt splices) are tapered for a reason.
3M Scotch 2229 Electrical Tapes | Rubber Mastic Tape
“I also use Scotch 13 Semi Con Tape to go over the butt splice to place the strand shield back on to the medium voltage cable. This prevents air voids at the conductor entering the butt splice and returns the cable to its configuration prior to making the cable splice. PILC is still around here in the USA and there are few splicers who are actually trained to repair it professionally,” informs Levingston.
3M Scotch 13 Electrical Tapes | Semi-Conducting Tape
Here a lineman/cable splicer is using 3M Scotch 33tape to provide electrical insulation layers to a medium voltage cable– taping up the neutral tails.
Further Reading
- 6.6kV 3 Core Cable Breakout Using 3M Scotch Tapes
- 3M Electrical Tapes – Scotch Brand Electrical Tapes From 3M
- Some 3M Scotch Electrical Tapes Tips & Skills….
LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt
Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
THORNE & DERRICK Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV
HV VLF Testing 11kV IDNO Connection
August 18th, 2020Pictured: HV High Voltage VLF Testing 11kV IDNO Connection
Images Courtesy of: Andy Dresser GCGI IEng MIET – Director at ASD Power Services Ltd
HV VLF Testing
Some HV VLF testing being carried out for a customer pre-connection of a new substation as part of a IDNO connection. ASD Power Services Ltd offer a wide range of work from VLF testing and sheath testing to SAP works.
asd power services ltd
ASD Power Services Ltd, established July 2016, are based in Newbury, Berkshire and offer the following services:
- (SAP) Senior Authorised Person (11KV)
- Auditing of Electrical Distribution Networks both LV and HV
- Maintenance inspections on electrical installations, including none intrusive IR Inspections
Director Andy Dresser is a Senior Authorised Person (SAP) and has over 25 years of experience in the Electricity Distribution business including network design, project management, auditing, people management, operational engineering, network construction, control engineering and procedure development.
Jointers blog
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
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LV Service & Mains Straight and Branch Cable Jointing
August 18th, 2020Images : James Weston – Cable Jointer at Linbrooke Services Ltd
- LV service to mains cable jointing
- Service cable jointing up to 35sqmm 3 Phase, including connections to waveform and PILC cables
- LV switching and fuse operation on all LV service equipment
- Insulated cut-outs renewal and changing
Single Service Cable Jointed Off .1 PILC Cable – Low Voltage
3 Phase Service Breech Cable Joint Off 5 Core .3 Cable
Jointers blog
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
15,000+ Subscribers. ➡
110kV Oil Filled Cable Joint With Cross Bonding Leads & Link Box
August 18th, 2020Image: Andrew Brezovszky (EHV Cable Jointer | Australia)
Pictured: 110kV Oil Filled Cable Joint (Screen Break) With Cross Bonding Leads & Link Box
110kV Fluid Cables On Flowboards Prepared For Cable Jointing
The Final Three Cable Joints Fibreglassed
Jointers blog
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
15,000+ Subscribers. ➡
