Roxtec offers a range of Ex systems designed for the passage and sealing of multiple cables through a single opening. This configuration reduces the number of individual perforations required compared to installations using a separate entry point for each cable.
The systems are based on a modular structure that can accommodate cables of different diameters. The configuration also allows for space to be left available for the future addition of new cables when the installation requires expansion.
Another difference compared to individual cable glands lies in space management. By concentrating several cables in a single opening, multi-pass systems can be used in panels, cabinets, and other equipment where the available surface area for cable entries is limited.
The selection and assembly of these systems in potentially explosive atmospheres are subject to the requirements established by the relevant regulations and the certifications applicable to each installation.
Roxtec has analyzed the differences between Ex cable passage devices and cable glands, taking as a reference the IEC 60079 series of standards and, in particular, IEC 60079-14, relating to the design, selection and installation of electrical systems in explosive atmospheres.
Aspects considered include certifications of cable entry systems, the space required for installation, and assembly, inspection, and maintenance procedures.
