Key functions of cable glands include:
Environmental protection – the cable gland should provide environmental protection by providing outer cable sheath seal to prevent the ingress of moisture (according to IP Rating) or dusts into the electrical enclosure or junction box. The cable glands should provide additional sealing to the section of cable entering the electrical enclosure where high levels of ingress protection are required.
Earth Continuity – the cable gland provides armour earth continuity where cables are wire braided/armoured; the gland should withstand a minimum short circuit fault current corresponding to that of the cable armour or peak fault of the electrical power system.
Cable Pull Out Resistance – cable glands must provide holding force on the cable to ensure adequate levels of LV MV HV cable pull out resistance preventing lateral and axial loads being applied to the internal cable conductor terminations.
Explosive Atmospheres – cable glands for installation in hazardous areas must be specified according to the installation code or classification authority, such as ATEX or IECEx.
CABLE GLANDS FOR HAZARDOUS AREAS
Additionally, in hazardous areas the cable gland when correctly specified according to ATEX or IECEx certifications should prevent the migration of flammable gases and control and contain any potential explosions. View the complete range of ATEX cable glands suitable for cable termination of all wire armoured/unarmoured, braided and lead sheath cables in onshore and offshore locations.
Cable glands are designed and manufactured utilising all the knowledge of the critical requirements to safely terminate cables in all types of LV MV HV cable installations.
- Industrial Glands – Wire Armoured, Braided &Unarmoured Cables
- Hazardous Area Glands – Flameproof & Explosion Proof (ATEX &IECEx)
- Low Smoke Zero Halogen/LSF Glands
- Medium & High Voltage Glands (MV HV)
CABLE GLAND CONSIDERATIONS
Environmental – highly corrosive onshore and offshore applications requiring protective nickel plated or 316 grade stainless steel glands in the oil, gas and petrochemical industries. Concerns about toxic gas emissions in confined spaces and public buildings to maintain circuit integrity of low smoke zero halogen cables. Levels of atmospheric moisture exposure impacting on the ingress protection (IP) rating requirement and need for entry thread sealing washers – specialist application high performance cable glands are available to meet the operating requirements of all industry sectors.
Electrical Enclosure – eliminate dissimilar metal contact and risk of bi-metallic corrosion. Check cable entry hole and material thickness of the gland plate to determine whether extended threads are required (thread conversion adaptors/reducers may be required).
Short Circuit of LV, MV & HV Power Systems – medium and high voltage power cable systems with high fault current ratings require glands with suitable short circuit protection (CMP CIEL Cast Integral Earth Lug).
Hazardous Area Cable Glands – for explosive atmosphere applications compliance and adherence to national or international standard codes of practice must be ensured (ATEX, IECEx, INMETRO, CSA, EAC).
