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Hazardous area transformer rectifiers

09 June 2009

Hockway has designed a range of ATEX certified oil cooled hazardous area transformer rectifiers suitable for use in Zone 2 hazardous areas with gas group IIB (Baseefa 07ATEX 0155) and IIC (Certified No 07 ATEX 0261). For complete safety Hockway build integrated certified units, rather than rely on boxes and enclosures with individual certification.

These are specifically for the cathodic protection of steel structures including jetties, pipelines, tank farms and offshore structures and vessels. They have been designed to comply with the most stringent industry specifications and perform in arduous environmental conditions where continual operational safety and reliability is paramount. The ATEX certified transformer rectifiers are in the ONAN (Oil Natural Air Natural) cooling category and thus have a greater inherent reliability than oil circulated and forced air designs.

All units are manufactured to stringent safety and rigorous quality assurance procedures under ISO 9001 certification, fully in accordance with all applicable British and European standards.

Typical applications include oil refineries, LNG plants, chemical plants and offshore installations. Units are available for ambient temperatures up to 55°C, current ratings of up to 600A. Multiple output channels can be built into a single rectifier enclosure where required.

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