CCG first launched its Posi Range of corrosion-proof cable glands in 1989 after a direct request from senior SASOL engineers for CCG to come up with a solution to the problem of corrosion to brass cable glands on their petrochemical plants. The corrosion of cable glands and the subsequent failure of the related electrical installation’s explosion proof protection rating was a major ongoing concern for SASOL engineers at the time.

CCG Posi Range of cable glands

After much design work and testing, CCG came up with an innovative solution in the form of the Posi Range of cable glands. The design centred around the idea of having all the brass components of the gland, which are needed for earth continuity and mechanical strength, encapsulated in a non-metallic, corrosion-resistant, polymeric compound. The gland also incorporated the trusted CCG Captive Component Gland design whereby all the critical components such as seals, cones and cone rings are held captive within the gland at the time of installation, ensuring that they are not left out or wrongly fitted. SASOL was so impressed with the product that it then specified Posi Glands for all its new projects and for use as replacements of existing glands during maintenance shutdowns. Within a few months of its launch, the Posi Range was specified by Fluor for use at the Mossgas Project.

The Posi range, which consisted of the both the Posi Gland for armoured cable and the Posi Grip Gland for unarmoured cable, was a world first and revolutionised the cable gland market, not only in hazardous areas, but also in the highly corrosive metal mine and minerals process industries. CCG soon launched the gland internationally where it was accepted with the same enthusiasm as the South African market. In 1991, the range was specified for use by a major Australian aluminium refinery project and by China Light and Power in Hong Kong for use on all their outdoor installations. 

Because of the Posi Grip Gland’s superior tapered seal and cable retention performance, Stolt Comex, an international manufacturer of remote operated underwater vehicles, used the glands on its subsea systems. In 1992, a ROV with CCG Posi Grip Glands installed was operating at depths of 670 m off the West Australian coast and continued to operate without fault for a period of five years. Independent tests were conducted in the UK last year on the same CCG tapered gland seal for use at a record-breaking depth of 850 m. With such success, it was inevitable that the opposition would copy the range, so in 1993 CCG launched an improved design. For use with SWA cables, the Corrosion Guard Gland had a screw-on outer protective covering, which is separate in function from the inner metal gland and armour clamping components. This allowed the gland to be inspected without dismantling the whole gland.

This was a major improvement over the previous Posi Seal gland and, unlike its copy, which has plastic to metal threads, CCG’s Corrosion Guard Gland has true metal-to-metal thread contact through the whole of the gland. This is critically important for maintaining earth continuity and short circuit fault currents. Independent tests conducted in the UK have shown that CCG’s metal-to-metal threads with a captive cone pass the IEC 62444 and IEC 60947 tests whilst a gland with plastic on metal threads and a floating cone does not.

Over the years the Corrosion Guard and Posi Grip range of glands have been steadily improved and a few more ‘world firsts’ and acclaims have been added to its list. In 2007, it won an award for product innovation at the HazardEx conference in the UK. It was the first gland range of its type for both armoured and unarmoured cables to be ‘quadruple certified’ to Ex e, Ex d, Ex t and Ex nR protection levels with certification to ATEX, IECEx, SANS, Australian, Brazilian and Russian standards. It is also the first to have Ex d barrier glands for both armoured and unarmoured cables using CCG’s award-winning QuickStop Injection Resin technology which won the best user category at the Hazard Ex conference in the UK in 2017. These features, combined with the full range for both armoured and unarmoured cables, full comprehensive international certification and a proven design, has meant that after 30 years, the CCG Corrosion Proof Range of glands continues to gain the trust of specifiers and installers around the world. 

Enquiries: +27 (0)11 394 2020

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Editor
Gregg Cocking
Email: sparks@crown.co.za
Phone: +27 11 622-4770
Fax: +27 11 615-6108

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Carin Hannay
Email: carinh@crown.co.za
Phone: +27 11 622-4770
Fax: +27 11 615-6108


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