Eaton Crouse-Hinds Series Operating Instructions Manual

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Eaton Crouse-Hinds Series Operating Instructions Manual Manual pdf 20 page image

20ThroughholeCounter-nutFig. 2Enclosure wall(Wall thickness á 4mm)Fig. 3"even"sealing surfacewith sealPressure screw Intermediate glandFig. 1Enclosure wall(Wall thickness < 4 mm)Through holePressure screwSeal 1Fig. 46 InstallationThe relevant national regulations and thegenerally recognized rules of engineering applyfor the installation and operation.(IEC/EN 60079-14).The improper installation and operationof enclosures can result in the invalidation ofthe guarantee.Observe the special operational condi-tions accordance to IEC/EN 60069-14.XATEX - IEC Only fixed cables may be used. The operatorshall ensure that an appropriate strain relief isprovided. This is not required for trumpet-shapedglands.XATEX - IEC The degree of protection IP66 is onlyattained if the seals and cable entries areinstalled correctly.XATEX - IEC Cable entries that are only suited for a lowimpact energy shall be built into an enclosure insuch a way as to protect them from a mechani-cal impact energy.6.1 MountingPrior to mounting, ensure that thethreads of the entry components match thethreads of the apparatus or enclosure.If the entries and components are to bescrewed directly into the walls, the wall thick-ness of the apparatus shall be at least4 mm.Counter-nuts shall be used if enclosurewalls are less than 4 mm thick. The minimumthickness of the enclosure wall shall be1.5 mm.The use of entry elements with damagedor dirty threads can impair the IP degree ofprotection.Imported Cables and wiring shall berelieved of tensile forces (eg with a cableclamp).Special spanner for tightening pressure screwsof cable entriesFig. 5Screw-inthreadCounter-nut(with seal foruneven sealingsurface)Mounting in"uneven"sealing surfacewithout sealIntermediate glandSeal 26.1.1 Cable entries (KLE)The intermediate gland (see Fig. 1) of the cableentries shall be fitted with a suitable tool, e.g.fork, ring or box spanner.It is mounted directly in the threaded hole or viathe through hole of the enclosure (see Fig. 2).If the sealing surfaces are uneven, seals shall beused between the enclosure wall and theintermediate gland (see Fig. 3).Counter-nuts shall be used for walls with athickness of less than 4 mm (see Fig. 2).Cables are fed in as shown in Fig. 4.The seal inserts shall be chosen to suit therespective cable diameter(Page 13 Figs. A, B, C and D).Use COOPER CROUSE-HINDS spanners with aside opening can be used to facilitate thetightening of the pressure screw when the cableentry has been mounted (see Fig. 5).Order No. GHG 960 1951 R0001 forSet 1 (M12, 16, 20, 25, 32 and 40)Order No. GHG 960 1951 R0002 forSet 2 (M50 and M63)To ensure the required minimum degree ofprotection, the gland body and the pressure capshall be tightened with the given test torques(see Technical Data).When tightening the pressure cap, the glandbody shall be prevented from turning with asuitable tool, e.g. a spanner.Overtightening can impair the degree ofprotection.Optionally, cable entries with colour-coded (lightblue) pressure screws can be used forintrinsically safe circuits(see main COOPER CROUSE-HINDS cataloguefor order numbers).>5 mm0 mmM12, M16 (Ø < 9 mm), M20 ... M63M16 (Ø > 9 mm)ØØGBCable entries, blanking plugs, screw plugs, trumpet-shaped cable glands, reducing glands and drain plugs