CMP Cable Glands
There are many factors to be considered when selecting cable glands for industrial installations. Neglecting to give due attention to these
factors could cause unnecessary difficulties at a crucial point in time where most inconvenience and expense can result. It is most desirable to avoid discovering that, once all other equipment is onsite or installed, the glands have not been ordered or are the wrong size or type.
Good practice would be to allocate some planning and preparation time to cable gland selection. This will help avoid the possible disruption which could result at a critical point of the installation process. In the event of a project schedule of cables being available Cleveland Cable are happy to offer a gland selection and sizing service.
Please contact our sales team on 01642 241133 or email firstname.lastname@example.org for further information or assistance.
Here is a summary of some aspects to carefully consider when selecting cable glands.
Identify the type of cable to be used.
- Check the construction, size and material properties of the cable.
- Check the type and material of the cable armour(*).
- Check the short circuit fault current rating of the cable armour(**).
- Check the actual diameter of the inner bedding (where present).
- Check the actual diameter of the lead covering (where present).
- Check the actual size of the overall cable diameter.
- Check the size and type or armour braid (where present).
- Check any special environmental requirements in relation to corrosion protection.
- Check the material of the mating electrical enclosures to eliminate dis-similar metals.
- Consider whether any protective plating is required to be applied to the cable gland.
- Check the type and size of the cable entry hole in the mating electrical equipment.
- Check the ingress protection rating of the electrical equipment or site standard.
- Check whether a single or double seal cable gland is required.
- Check whether an entry thread seal is required for IP66 (or IP67/IP68) conditions.
- Check whether fixing accessories such as lock nuts and serrated washers are required.
- Check whether earth tags are required.(**)
- Check whether shrouds are required.
- For installations in Hazardous Areas, special considerations should be taken into account to ensure compliance with national or international codes of practice.
- Check whether a thread conversion adaptor reducer is required to make the installation.
- Select corresponding adaptors or reducers.
- Check whether any stopper plugs are required to close unused cable entries.
- Select corresponding stopper plugs.
Note(*): If the cable armour is of a non standard material i.e. Aluminium Wire Armour, it may be necessary to consider an alternative cable gland material e.g. Aluminium.
Note(**): For certain medium voltage and high voltage cables where the fault current carrying capacity of the cable armour is greater than that of the standard earth tag it may be necessary to consider a cable gland utilising a heavy Cast Integral Earth Lug (CIEL) option.