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Explosion-proof cable glands KOV (FECA, FECAS) for armored cable with double sealing for all types of armor/braid

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PURPOSE AND SCOPE OF APPLICATION

Explosion-proof cable glands KOV for armored cable with double sealing for all types of armor/braid secure the cable against accidental pulling out and are used in places where sealing IP 66/67/68 on cable outer sheath and explosion-proof sealing under armor are required. KOV explosion-proof cable glands may be used for direct insertion as a part of fireproof enclosures of IIA, IIB+H2, IIC subgroups, which have the volume exceeding 2000 cm3. It helps to refuse from cable glands with partition for encapsulation.

The most important development is the use of one sealing ring for the whole range of diameters of crimped cable, which reliably crimps the incoming cable and ensures Exd type of protection. One sealing ring together with mandrel or cable withstand the force in newtons, which is equal to the twentyfold diameter value (in mm) of the mandrel or the cable. This helps to use explosion-proof cable glands without additional unloading of cable.

Increased wall thickness of bodies of GORELTEX cable glands considerably enhances their strength compared with cable glands of other manufacturers.

Combined single orientation clamping system of the armor and sealing of cable inner sheath are used in KOV series cable glands. Such combined system helps to avoid phase-to-phase voltage/ linear shift between inner sheath and armor/braid of the cable during mounting of cable gland. Mounting of KOV series cable gland is more convenient and error-free: presence of a combined fastening element does not require constant balancing between fastening clamp of the armor and that of the cable inner sheath. This guarantees high-quality sealing of the cable inner sheath and reliable galvanic coupling between cable gland body and cable armor. Dimensions of cable glands are significantly reduced which helps to save space and reduce the weight of the explosion-proof device.

Clamping ring of the armor helps to use KOV cable gland for all types of cable armor/braid: wire armor, with braid, tape armor. Clamping ring of the armor helps to crimp armor/braid with the thickness from 0 to 3.5 mm (KOV01-...-KOV5 from 0 to 2.5 mm, starting from KOV6 from 0 to 3.5 mm). External sealing ring for ingress protection prevents ingress of water into cable gland, which can cause damage to armor/braid.

KOV explosion-proof cable glands ensure earthing circuit continuity between cable armor/braid and cable gland body by means of clamping ring of the armor/braid that ensures protection against electromagnetic disturbances. PG-GERMETIC waterproof insulation is used for protection in case of continuous flooding of cable armor/braid. Cable glands conform to DTS01 requirements.

Explosion-proof KOV cable glands may be used for cables with operating voltage over 3.3 kV.

KOV explosion-proof cable glands are completely suitable for use with equipment having ExnR marking.

Thanks to their design, KOV explosion-proof cable glands ensure cable unloading, protection against pulling out without causing damage to the structure of cable sheath and conductors, as well as prevent cable overcompression.

Explosion-proof cable glands of KOV series are designed in Russia (Patent No. 155936, rightholder "ZAVOD GORELTEX" Co. Ltd. (former "CORTEM-GORELTEX" Co. Ltd.), operating characteristics of which significantly surpass Russian and foreign analogues.

Scope of application – underground mines and pits hazardous with gas (methane), coal dust; outdoor and indoor hazardous areas as per explosion protection marking, GOST 30852.13-2002 (IEC 60079-14:1996), dangerous production facilities of I, II, III, IV hazard class supervised by Rostechnadzor of the RF and national technical supervision bodies of the Customs Union and CIS countries.