Cable Joints & Terminations HV

ANSI Connectors | Screened Separable Connectors from Cooper Power Systems

ANSI Connectors | Medium Voltage Power Cable Connectors for Transformers & Switchgear Bushings from Cooper Power Systems

Cooper Power Systems Separable Connectors (ANSI) & Bushings are rated for 15kV, 25kV and 35kV medium voltage power systems in accordance with the following ratings.

What is ANSI?

The American National Standards Institute is a private non-profit organization that oversees the development of voluntary consensus standards for products, services, processes, systems, and personnel in the United States.

ANSI Separable Connectors are waterproof cable connectors that can be easily installed – these cable accessories use imported high quality EPDM rubber for reliable field performance and are widely used in pad-mounted switchgears and pad-mounted transformers on MV Power Systems. 

Connectors & Bushings from Cooper Power Systems

For further information download the Cooper Power Systems catalogue.

Standard Interfaces For Separable Connectors and Components
Certified Tests and Performance
Conductor Sizing
AEIC Insulation Diameter Chart
ICEA Insulation Diameter Chart
200 A Loadbreak Connectors
200 A Deadbreak Connectors
200 A Stacking Dimensions
Clēēr 600 A Loadbreak Connectors
600/900 A Deadbreak Connectors
600/900 A Components and Replacement Parts
600/900 A Connector Systems
600 A Stacking Dimensions
Junction Bars/Cable Transition and Oil Stop Modules
Splices
Underground Surge Arresters
Tools & Maintenance
Bushings
Fusing
MagneX Single-Phase Interrupter
MagneX Three-Phase Interrupter
Faulted Circuit Indicators
Sectionalizing Cabinets
Part Number Index
Support Available When You Need It
Product Application Overhead and Underground Distribution Systems

Connectors

Eaton’s Cooper Power Systems 200 A and 600 A connector products are designed for applications on XLPE, EPR or other solid dielectric insulated underground electrical cables. In order to maintain a reliable termination, the cable accessories must be sized correctly with the cable conductor size and cable insulation diameter.

The cable conductor size is used to determine the compression connector used. Proper sizing is important to ensure reliable current transfer from the underground cable conductor to the elbow connector.

Conductor diameters are dependent on the conductor size in AWG or kcmil, and conductor type (stranded, compressed, compact or solid). The cable insulation diameter (the diameter over the insulation) is critical because it is important to maintain a tightly sealed fit between the cable insulation and the elbow housing at the cable entrance. As the insulation thickness changes, so must the range of the cable accessory. Cable insulation diameter can be determined from the cable manufacturer’s specification, or by referring to pages 8 (for cable made to the AEIC Standard including the ± 0.030 inch tolerance) or 9 (for cable made to the ICEA Standard) for minimum and maximum diameters.

ANSI Connectors | MV Medium Voltage Power Cable Construction

Thorne & Derrick

Contact us for Competitive Prices & Fast Delivery from Stocks for Heat Shrink, Cold Shrink & EPDM Rubber Connectors, Joints & Terminations up to 66kV.

Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Accessories, Jointing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV, 66kV and EHV.

Stocking & Supplying | Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Jointing Tools | Cable Pulling Eqpt | Earthing & Lightning Protection | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV

MV Cable Leads | Pre-Terminated Medium Voltage Cable Leads for 33kV Power Networks

Cable Leads MV 33kV

MV Cable Leads

Pre-assembled custom, ready-to-install MV cable leads manufactured by Nexans are available equipped with Interface “A” to “F” separable connectors and terminations (Heat Shrink, Cold Shrink and Slip on). Cable types available are standard MV XLPE and Class 5 Flexible cables. Just contact Thorne & Derrick and specify connector/termination type, cable type and length and we provide competitive prices and short lead times for the delivery of custom MV cable leads – assembled and tested. Typical applications for cable leads include connecting between MV distribution transformers and electrical switchgear. Testing options available include Megger, HI Pot (AC withstand to 72kV) and partial discharge (PD). Contact us with your requirements.

MV Cable Lead | Here a medium voltage (MV) cable in shown terminated using Nexans AFN Slip-on Cold-applied Cable Termination with Screened Separable Connector for connection to MV switchgear, transformer or electrical equipment up to 33kV

Thorne & Derrick

Nexans Main UK Stockist & Distributor

Contact us for Competitive Prices & Fast Delivery from Stocks for Heat Shrink, Cold Shrink & EPDM Rubber Connectors, Joints & Terminations up to 66kV.

Go to our Price List and contact us with your enquiries.

Heat Shrink Cable Accessories for 11kV Triplex Cables

Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Accessories, Jointing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV, 66kV and EHV.

Stocking & Supplying | Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Jointing Tools | Cable Pulling Eqpt | Earthing & Lightning Protection | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV

Euromold MV HV | Cable Terminations, Connectors, Elbows & Joints

MV ‘Backup’ Fuses (Current Limiting Type) Are Not Rated For ‘Overload’ Current Interruption

MV ‘Backup’ Fuses

From IEEE Std C.37.48.1
“MV backup fuses can interrupt any current between its rated minimum interrupting current and its rated maximum interrupting current. If a backup fuse is melted open at a current level less than its minimum interrupting rating, the fuse is not required to, and may not successfully, interrupt the circuit. In this case, the fuse melts open at only a few places, often a single point, along the length of the element. Burn back of the element proceeds very slowly, as the arc heat causes the sand to melt and form a resistive fulgurite. During arcing conditions, a large amount of heat is released in a limited area within the fuse. This heat can prevent the sand and the resultant fulgurite formed in the sand from developing dielectric properties needed to withstand circuit voltage. As a result, the fuse may fail to interrupt the current and be destroyed as it attempts to clear.”

Solution(s): Include a protective device in series which is rated for overload operation (increase back-up fuse size to get out of the zone), employ full range fuses.

In this case, an upstream SF6 breaker was able to be coordinated with the needs of the CL fuse – here the fuses are immediately ahead of the transformer primary.

Guest Post by Matthew Denis | Principal Engineer at Rockwood Engineering (Ontario Canada)

Services | Medium Voltage Electrical Power System Design & Analysis | Power System Analysis including: Protection Coordination, Arc Flash, Short Circuit, Harmonic & Load Flow | Power Quality Assessment/Mitigation | Power Distribution Design (Industrial, Utility, Commercial, Agricultural), Medium Voltage Power Systems Design

MV Fuses | Thorne & Derrick distribute the complete range of ABB Medium & High Voltage Fuses (MV-HV) for the protection of 11kV & 33kV switchgear, transformers, cables and substations.

Definition: MV Back-up Fuses by ABB

Current limiting back-up fuses. The current limiting fuse family is generally composed of three different fuse groups: back-up fuses, general purpose fuses and full range fuses. All of them limit the value of prospective short-circuit currents during the interruption process, thereby extending the life time of nearby installed electrical equipment. The main difference is in the minimum breaking current that characterizes the lowest fault current that the fuses are capable of interrupting. This value is generally highest for back-up fuses, slightly smaller for general purpose fuses and smallest, with the value close to the minimum melting current, for full range fuses. But reaction time is critical for the protection function. That is why back-up fuses, with an interruption time for the minimum breaking current in the range of a few seconds down to a few tense of milliseconds, are the most commonly used. The total clearing time in cases of high short-circuit currents is even shorter i.e. only a few milliseconds. That is why back-up fuses can be used as typical overload protection elements. General purpose and full range fuses capable of interrupting even the smallest values of currents can only be considered as over current devices since the interruption time is greater than one hour. Therefore, these types are used rarely and are usually recognized as a separate element of protection, without any linkage to the opening function of load break switch. ABB current limiting fuses have low minimum breaking currents, i.e. close to three times the rated current In.

WHITEPAPER: World’s First 2-Pole HV 13.8KV Non-sparking Generator For Use In Hazardous Areas

Power Generation Equipment In Hazardous Areas

First 2-Pole HV 13.8KV Non-sparking Generator

The BRUSH Group are proud to announce this ground-breaking technological advancement with the official issue of the first in a new series of White Papers, detailing the development and new industry standards surrounding the world’s first Non-sparking 2-pole generator.

This application-led solution reduces procurement, operation and maintenance costs on generators and associated equipment installed in explosive environments.

Launched at the FPSO World Congress event by Roy Beardshaw, BRUSH’s Head of Engineering, the paper details the current industry standards and how this exciting new development can change the use of power generation equipment in hazardous areas.

Chris Abbott, CEO of BRUSH commented: “the innovation that BRUSH has made with the non-sparking high voltage generator truly leads to a step change in the operational flexibility and cost for power generation units in hazardous environments.”

The paper focusses on the limitations of the current industry approach and how this innovative solution not only brings exceptional safety levels, but also offers operators significantly lower running, maintenance and ownership costs.

The intelligent, new BRUSH 2-Pole HV Non-sparking Generator design has gained independent approval and been classed as non-sparking for Zone IIA and IIB gas applications. These are typical operating environments on the open deck of oil rigs, FPSO’s (Floating, Production, Storage and Offloading) vessels and many chemical processing plants.

World’s First Non-sparking 2-pole Generator

WHITEPAPER CONTENTS

• Application Focus: FPSOs and Oil Rigs
• Severity of Risk: Operating in Explosive Environments
• The Current Approach: Evolution, Limitations and Cost Implications
• The BRUSH Innovative Solution: 13.8kV Non-Sparking Generators
• Testing and Inspection to EN 60079-15: Verification and Validation
• Industry Benefits: Reduced Footprint, Faster Start-Up and Lower Maintenance Costs
• Reduced Plant Footprint, Lower Power & Reduced Lifetime Operational Costs
• Setting New Industry Standards for Power Generation in Hazardous Environments

To download the White Paper in full and see how industry standards in power generation within hazardous environments will never be the same click the image below.

DOWNLOAD WHITEPAPER HERE

ABOUT BRUSH

The BRUSH Group has a long and rich history serving power generation customers as an OEM of generation, control, and distribution products. While primarily known for supplying industry leading turbo-generators and power management systems, BRUSH also designs and manufactures transformers and switchgear of equally high quality.

Today, the integrated companies operate as “One BRUSH” with competency centres for 2-Pole & 4-Pole generators, power management and control systems, transformers, switchgear, and OEM services. BRUSH serves the global power generation and distribution markets with a strong foundation of technical knowledge to support grassroots projects, capacity expansions, and drop-in-replacements.

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 cable 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.

All international sales enquiries can be serviced and supplied by our Export Power Team.

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 

Nexans Power Cable Accessories & Resource Centre

Main UK Stockists & Distributors

Resource Centre | Education & Learning with Nexans

Thorne & Derrick provide competitive prices and fast delivery from stock for the complete range of Nexans MV-HV Connectors, Joints & Terminations to connect, splice, repair and maintain medium/high voltage cable and power distribution systems.

A complete range of Joints, Terminations & Connectors utilising EPDM rubber, heat-shrink and cold applied technologies are available for medium and high voltage power cable networks up to 66kV.

Euromold MV HV | Cable Terminations, Connectors, Elbows & Joints

Top 20 Blogs

See our collection of the Top 20 Nexans Blogs featuring their complete range of Medium Voltage Power Cable Accessories & Cable Services:

1. Essential Reading – Medium Voltage Cable Accessories Book Published By Nexans
2. Nexans Euromold Connectors : EPDM Screened Separable Connectors MV
3. Nexans Euromold Screened Separable Connectors | SSE Approval
4. Nexans Euromold Connectors – Webisodes
5. Jointer Training Courses – Medium & High Voltage Jointer Competency Training
6. Network Rail Full Acceptance for Nexans Tee Connectors & Bushings
7. MV Cable Joints | Nexans New Product Launch
8. Nexans MONOi Heat Shrink Termination | XLPE Indoor Single Core 12kV-36kV
9. Nexans MONOe Heat Shrink Termination | XLPE Outdoor Single Core 12kV- 36kV
10. 66kV Connectors, Cables & Junctions Boxes – An Interview With Nexans
11. 66kV Cable Jointer Training – A Question Of Competency Not Familiarisation
12. Facilitating Sensor Installation In Power Networks By MV Cable Accessories
13. Nexans Euromold Bushings & Connectors – How To Select MV HV Connectors
14. Nexans Power Cable Accessories For Wind Energy Projects – MV & HV Cables
15. Nexans NX600 Alsecure Cable : Fire Resistant, Low Smoke & Halogen Free Cables
16. Nexans Cable Leads Keep HV Transmission Flowing – 110kV, 132kV & 220kV
17. 33kV Nexans Offshore Cable Terminations Into Ormazabal Panel
18. Nexans Connector Kits Terminating 33kV XLPE Cables Into Siemens Switchgear
19. Nexans Euromold 11kV Connectors Terminating Cables Into Siemens Transformers
20. Nexans AFN 33kV Substation Termination With GPH Mechanical Shearbolt Lugs

Also | MV Cable Leads | Pre-Terminated Cable Leads for 33kV Power Networks