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EHV Cable Jointing | A Showcase Page For Barry Kelly (ALBA Power Cable Jointing)

ALBA Power Jointing Services is a quality driven business, based in Australia, that is committed to delivering Extra High Voltage Cable Jointing & Terminating to the highest standards of craft and workmanship – this includes jointing on both pressurised cable systems (both fluid and gas filled) as well as cable systems with solid dielectric (both XLPE and EPR) up to and including 500kV.

“Commitment to our customer requirements in all aspects of modern installation projects is paramount and pivotal in building and maintaining excellent working relationships with our clients,” says Barry Kelly (Company Director, ALBA Power Jointing Services).

The workmanship of ALBA Power Jointing is attested by the following images courtesy of Barry Kelly.

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. ➡

Non-welded Fireproof & Watertight Pipework Seals for Marine Vessels from Roxtec

Roxtec Cable Seals

Non-welded Fireproof & Watertight Pipework Seals

Marine Vessels from Roxtec

Use Roxtec sealing solutions for single and multiple metal pipes to protect life and assets against fire, gas and water ingress.

Owners, shipbuilders and construction companies all over the world appreciate the excellent fire-stopping and watertight features of our certified sealing system.

Roxtec metal pipe cable transits maintain deck and bulkhead fire classifications as defined by IMO as well as fire ratings for walls, panels and other structures with openings for pipes. They are available for a variety of environments and use, for round and rectangular openings and for high demand areas.

Covering a wide range of systems

Marine vessels, for example, have complex webs of pipework to feed essential systems such as engine transfer systems, hydraulic fluid systems and various water systems. This means variations in pipe materials, and tough demands for sealing systems. We provide seals for many applications, and our metal pipe seals are ideal for maintaining the integrity of marine rated divisions penetrated by:

• Water pipes
• Wastewater pipes
• Hydraulic pipes
• Pneumatic pipes
• Transfer and distribution systems
• Sprinkler systems
• Restaurant and beverage pipes

Cable & Pipe Sealing Transits & Systems

Roxtec metal pipe seals are resistant to:

Fire

Stop A, B, H and jet-fire. Prevent smoke from spreading.

Gas

Ensure complete tightness against air and gas pressure up to 2.5 bar.

Water

Prevent humidity and water ingress. Keep tight against water pressure up to 6 bar.

Electromagnetism

Protect against effects of EMI and EMP.

Threats to Electrical Safety

Ensure electrical safety via potential equalization.

Blast

Protect against noise, vibration and the risk of explosion.

Roxtec Cable Seals & Transits

ROxtec

Thorne & Derrick are distributors for Roxtec, the leading manufacturer of sealing solutions for cables and pipes, to protect electricity Transmission & Distribution assets including substations against the potential catastrophic effects water, gas and fire.

Further Reading

• 132kV 33kV 11kV DNO Substations – A Guide To Cable Sealing By Roxtec
• Sealing Cables In Offshore Substations – A Roxtec CPD

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Thorne & Derrick

T&D are Specialist Distributors to UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and HV Jointing Contractors of an extensive range of LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt – this includes 11kV/33kV/66kV joints, terminations and connectors for both DNO and private network applications.

Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.

Key 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 

T&D Providers Of Jointer Training Courses By Pfisterer CONNEX & Nexans Euromold

110kV Outdoor Pfisterer Cable Termination 2500sqmm XLPE Power Cables

Image : Mohamed Megally | Electrical Design Engineer ASG Holding

Pictured: 110kV Outdoor Termination – 2500sqmm XLPE Power Cables Using Pfisterer Cable Terminations In High Voltage Substation (Al lith BSP Substation at Saudi Arabia)

Pfisterer 110kV Outdoor Termination For Adom Project

Pfisterer 110kV Outdoor Termination For Adom Project

T&D are main UK Stockists for the Pfisterer Connex 33kV inner cone plugs for terminating medium voltage power cables into gas insulated switchgear.

T&D are Main Distributors & Stockists for the Pfisterer range of Medium Voltage Power Products including Connex Plugs, Cable Jointing Tools, Sicon Connectors, Surge Arresters and Electrical Safety Equipment.

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. ➡

300kV Oil Stop Joint

Images : Mohamed Ali (Electrical Cable Jointer).

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. ➡

IET Wiring Regulations (BS 7671) | New Electrical System Designs & Installations

Furse BS 7671 Guide

BS 7671 18th Edition

IET Wiring Regulations

The IET Wiring Regulations (BS 7671) now require all new electrical system designs and installations, as well as alterations and additions to existing installations, to be assessed against transient overvoltage risk and, where necessary, protected using Surge Protection Devices (SPDs). Covered in the Furse BS 7671 Guide is the following:

Transient Overvoltage Protection

• What are transient overvoltages/surges?
• How are transient overvoltages created?
• The problem transients overvoltages cause
• Why surge protection is required and how to safeguard systems?

Section 443 & 534 of BS 7671 – Protection Against Overvoltage

• Risk assessment against transient overvoltages
• Compliance to BS EN 62305 & BS 7671
• Selection and installation SPDs

The IET Wiring Regulations require all new electrical system designs and installations, as well as alterations and additions to existing installations, to be assessed against transient overvoltage risk and, where necessary, protected using appropriate surge protection measures (in the form of Surge Protection Devices SPDs).

Transient overvoltage protection

Introduction

Based on the IEC 60364 series, the 18th Edition of BS 7671 Wiring regulations covers the electrical installation of buildings including the use of surge protection. The 18th Edition of BS 7671 applies to the design, erection and verification of electrical installations, and also to additions and alterations to existing installations. Existing installations that have been installed in accordance with earlier editions of BS 7671 may not comply with the 18th edition in every respect.

This does not necessarily mean that they are unsafe for continued use or require upgrading.

A key update in the 18th Edition relates to Sections 443 and 534, which concern protection of electrical and electronic systems against transient overvoltages, either as a result of atmospheric origin (lightning) or electrical switching events.

Essentially, the 18th Edition requires all new electrical system designs and installations, as well as alterations and additions to existing installations, to be assessed against transient overvoltage risk and, where necessary, protected using appropriate protection measures (in the form of SPDs).

Within BS 7671

Section 443 defines the criteria for risk assessment against transient overvoltages, considering the supply to the structure, risk factors and rated impulse voltages of equipment.

Section 534 details the selection and installation of SPDs for effective transient overvoltage protection, including SPD Type, performance and co-ordination.

Readers of this guide should be mindful of the need to protect all incoming metallic service lines against the risk of transient overvoltages. BS 7671 provides focussed guidance for the assessment and protection of electrical and electronic equipment intended to be installed on AC mains power supplies.

In order to observe the Ligntning Protection Zone LPZ concept within BS 7671 and BS EN 62305, all other incoming metallic service lines, such as data, signal and telecommunications lines, are also a potential route through which transient overvoltages to damage equipment.

As such all such lines will require appropriate SPDs. BS 7671 clearly points the reader back to BS EN 62305 and BS EN 61643 for specific guidance. This is covered extensively in the Furse guide to BS EN 62305 Protection Against Lightning.

Safeguarding your electrical systems

Why is Transient Overvoltage Protection so Important?

Transient overvoltages are short duration surges in voltage between two or more conductors (L-PE, L-N or N-PE), which can reach up to 6 kV on 230 Vac power lines, and generally result from:

• Atmospheric origin (lightning activity through resistive or inductive coupling (see Figures 02 & 03 in pdf), and/or
• Electrical switching of inductive loads

Transient overvoltages significantly damage and degrade electronic systems. Outright damage to sensitive electronic systems, such as computers etc, occurs when transient overvoltages between L-PE or N-PE exceed the withstand voltage of the electrical equipment (i.e. above 1.5 kV for Category I equipment to BS 7671 Table 443.2).

Equipment damage leads to unexpected failures and expensive downtime, or risk of fire/electric shock due to arc flash or flashover, if insulation breaks down. Degradation of electronic systems, however, begins at much lower overvoltage levels and can cause data losses, intermittent outages and shorter equipment lifetimes (see Figure 01 see pdf).

Where continuous operation of electronic systems is critical, for example in hospitals, banking and most public services, degradation must be avoided by ensuring these transient overvoltages, which occur between L-N, are limited below the impulse immunity of equipment. This can be calculated as twice the peak operating voltage of the electrical system, if unknown (i.e. approximately 715 V for 230 V systems).

Protection against transient overvoltages can be achieved through installation of a coordinated set of SPDs at appropriate points in the electrical system, in line with BS 7671 Section 534 and the guidance provided in this publication. Selecting SPDs with lower (i.e. better) voltage protection levels (UP) is a critical factor, especially where continuous usage of electronic equipment is essential.

Copper Conductors | Earth Rods | Earth Bars | Earth Bonds | Earth Clamps

Thorne & Derrick: Stockists & Suppliers of Furse Products

Thorne and Derrick are stockists and suppliers of Furse Earthing and Lightning Protection products. Acquired by the ABB Group, Furse is established as the world leader for earthing and lightning protection.

THORNE & DERRICK

Thorne & Derrick are national distributors of LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment – servicing businesses involved in cabling, jointing, substation, earthing, overhead line and electrical construction at LV, 11kV, 33kV, 66kV and EHV. Supplying a complete range of power cable accessories to support the installation and maintenance of low/medium and high voltage power systems:

• Slip-on Cable Terminations
• Cold-shrink Cable Terminations
• Heat-shrink Cable Terminations
• Cable Joints – Heat & Cold-shrink
• Separable Connectors (Euromold)
• Surge Arresters & Switchgear/Transformer Bushings

Key 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