ex cable glands

cable glands

cable_glands_en.qxp 28.03.2007 15:25 Uhr Seite 3

The main focus of our business is on the safety of our customers during their day-to-day work. For over

80 years now, we’ve been leading the way in the explosion protection sector in achieving this goal.

Development of explosion protected, electrical control devices and control units increased continuously

and successfully as of 1926. Pioneering new developments and innovative products are the results

of this success. R. STAHL specialists have been working actively for many years now in national and inter-

national committees to define new standards and better safety regulations. R. STAHL presented the

EXLUX 6000 explosion protected series of strip lighting units in 1989. The company quickly became a leading

supplier to the world market in the lighting sector. In 1993, three independent fieldbus systems from

the R. STAHL company were used on an offshore drilling platform near the coast of Norway. What was then

the company’s largest fieldbus project required customer-specific, innovative solutions and a high quality

engineering share. R. STAHL’s remote I/O System IS1 was introduced in the year 2000 making a decisive step

into the new millennium and gearing for the future. Today, it is an important element of the company’s

new fieldbus solutions. Then as now, safety standards did not pose a barrier to us but represented a challenge.

We not only comply with all standards, but are generally also involved in helping to create these standards

and set new ones. As a result, R. STAHL numbers among the leading suppliers of explosion protected compo-

nents and systems for measurement, control, instrumentation, power distribution, operator control and

observation, besides lighting, worldwide. This in turn results in our offer of all-in services to the explosion

protection sector.

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your safety -- our realitySpoilt for choice 5

Application guide 6

Ex e cable glands 8

Ex d cable glands 10

Triple certified 12

TRITON CDS 14

Accessories 16

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Before cable gland products can correctly be selected tosuit the user’s application, there are a number of variablefactors that need to be determined. Without this infor-mation it is difficult to make an accurate selection or rec-ommendation. Some of these factors may include location,installation code of practice, environmental conditions,industrial or classified hazardous area, type of equipmentand details of the cable to be used.

Here are some general guidelines that may help to identifythe appropriate cable gland product to suit your situation.

General cable gland selection guidelines

> determine conditions of use, i.e. industrial, hazardous area.

> determine environmental conditions> determine type of cable, armoured or non-armoured> determine type of armour and thickness,

where applicable> determine cable overall diameter> determine cable inner bedding diameter,

where applicable> determine enclosure type and configuration> determine whether there is any potential for the coupling

of dissimilar metals (e.g. brass and aluminium)> determine entry hole type and size> determine any access limitations or space restrictions> determine any special earthing or EMC requirements> determine accessories required, where applicable

If the cable glands are intended for use in flammable atmospheres (hazardous areas), the following additionalpoints may help your selection process:

> what is the protection method of the equipment, e.g. Ex d, Ex e, Ex n

> which gas group is the equipment rated for service inIIA, IIB or IIC

> if Ex d, is the cable directly entering the main enclosure> if Ex d, is there a source of ignition inside the enclosure> if Ex d, is the enclosure volume less than or greater

than 2000 cm3

> if Ex n, is the enclosure a restricted breathing (Ex nR)enclosure

application guide> if Ex nR, restricted breathing enclosure, does the cable

directly enter the main enclosure> entry hole type, drilled and tapped (threaded) or

clearance hole> entry hole thread form and size

Once the above information has been identified, the personcarrying out selection is more able to make an informeddecision about which product should be used from thechoices available.

Please note that selection and installation should be carried out in line with good engineering practice, observingthe requirements of the prevailing code of practice (e.g. IEC 60079-14), and in accordance with the instructionsprovided.IEC 60079-14 requires that the selection and installations of equipment shall be carried out only by competent persons whose training has included instruction on thevarious types of protection and installation practices, relevant rules and regulations and on the general principlesof area classification. The competency of the person shall be relevant to the type of work to be undertaken.

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hazardous area cable glands (CENELEC approved)

type protection cable type – generic cable type – specific sealing method I.P. rating

8161 Ex e unarmoured S.W.A. (single wire armour), braid armour outer seal IP66, IP68

8163/2T3CDS

Ex e, Ex d armoured (universal) S.W.A. (single wire armour), braid armour (SWB, GSWB, CWB, TCWB or BWB)

inner and outer seal withdeluge seal

IP66, IP67,IP68

8163/2E1FU


inner and outer seal IP66

8163/2E1FW

Ex e, Ex d armoured S.W.A. (single wire armour) inner and outer seal IP66

8163/2E1FXZ

Ex e, Ex d armoured braid armour (SWB, GSWB, CWB, TCWB or BWB) inner and outer seal IP66

8163/2E2FU

Ex e, Ex d armoured – lead sheated(universal)

L.C./S.W.A (lead sheathed and single wire armour),L.C./S.T.A (lead sheathed and steel tape armour)

inner and outer seal IP66

8163/2E2FW

Ex e, Ex d armoured – lead sheated L.C./S.W.A (lead sheathed and single wire armour) inner and outer seal IP66

8163/2CUe

Ex e armoured (universal) S.W.A. (single wire armour), braid armour (SWB, GSWB, CWB, TCWB or BWB)

outer seal IP66

8163/2C2K

Ex e armoured (universal) S.W.A. (single wire armour), braid armour (SWB, GSWB, CWB, TCWB or BWB)

outer seal with deluge seal IP66, IP67,IP68

8163/2CWe

Ex e armoured S.W.A. (single wire armour) outer seal IP66

8163/2CXe

Ex e armoured braid armour (SWB, GSWB, CWB, TCWB or BWB) outer seal IP66

8163/2A2F

Ex e, Ex d unarmoured unarmoured outer seal IP66, IP67,IP68

8163/2SS2K

Ex e, Ex d unarmoured unarmoured double outer seal IP66, IP67,IP68

8163/2PX2K


outer seal/compound barrier with deluge seal

IP66, IP67,IP68

8163/2PXSS2K

Ex e, Ex d unarmoured unarmoured outer seal/compound barrier

IP66, IP67,IP68

IEC cables Onshore Oil, Gas and Petrochemicals

specific cable type single seal double seal compound barrier

unarmoured A2F SS2K PXSS2KS.W.A. (single wire armour) CWe or C2K E1FW or E1FU PX2KL.C./S.W.A (lead sheathed and single wire armour) E2FW or E2FU PX2KPBA.W.A. (aluminium wire armour) CWe E1FW or E1FU PX2KA.S.A. (aluminium strip armour) C2K E1FU or T3CDS PX2KS.T.A. (steel tape armour) C2K E1FX/Z or E1FU PX2KL.C./S.T.A (lead sheathed and steel tape armour) E2FX/Z or E2FU PX2KPBL.C./GSWB (lead sheathed and braid armour) E2FX/Z or E2FU PX2KPBwire braid armour (SWB, GSWB, CWB, TCWB or BWB) CXe or C2K E1FX/Z or E1FU PX2Kscreened (braided) flexible – e.g. CY/SY Controlflex CXe or C2K E1FX/Z or E1FU PX2K

IEC cables Offshore Oil and Gas

specific cable type single seal double seal compound barrier

unarmoured A2F SS2K PXSS2Kwire braid armour (SWB, GSWB, CWB, TCWB or BWB) C2K T3CDS PX2Kscreened (braided) flexible – e.g. CY/SY Controlflex C2K T3CDS PX2KS.T.A. (steel tape armour) C2K T3CDS PX2K

Typical cable types with corresponding metal cable gland types

Selection table

Of course the cable type plays a significant part in the cable gland selection, but other important factors must also be carefully considered.

Please note that limitations or “special conditions of safe use” may be applicable to cable gland applications in accordance with IEC 60079. For further assistance in the selection of cable glands please refer to pages 12 and 13.


R. STAHL offers electrical installation material and cable connecting solutions with a variety of approvals

from internationally recognised certification bodies, including ATEX, IECEx and many others. R. STAHL,

the market leader in explosion protected material, offers a range of cable glands for use with armoured and

non-armoured cables, suitable for use in hazardous areas, classified under IEC 60079-10, in both metallic

and non-metallic configurations. These cable glands have been designed and constructed in accordance with

BS6121 and EN50262, although the former established the more onerous requirement, and are certified

as fully compliant with the very latest EN and IEC standards – EN/IEC 60079 series. With this approach, there

are no “special” seal materials required to suit typical low or high temperature situations, and two or more

alternative seals to suit each cable gland’s sealing range are not required. Consequently there are no special

order requirements necessary for the majority of project applications around the world. The certified cable

gland sizes on offer range from the regular M20 to the impressive M130. Using the same consistent design

concept this 8163/2 range stands proud amongst the rival offerings available on the market. Quite simply

R. STAHL gives you every possible combination of options that you could imagine.

spoilt for choice5


Series 8161

Increased safety Ex e non metallic indoor and outdoor cable glands with metric threads for use in Zone 1,

Zone 2, Zone 21 and Zone 22 hazardous areas with all types of unarmoured cables. Its superior

sealing technique ensures a highly effective and reliable high integrity solution. Suitable for use in

conjunction with increased safety Ex e apparatus or flameproof Ex de equipment which has an increased

safety Ex e terminal chamber. For Intrinsic Safety Ex i, a version with blue cap nut is available.

Series HSK

Increased safety Ex e bell mouthed cable glands are available in brass or plastic/aluminium with metric

threads for use in Zone 1, Zone 2, Zone 21 and Zone 22 hazardous areas with all types of unarmoured cables.

Because of their construction the cable glands are suitable for portable equipment.

Series 8163

Increased safety Ex e metallic cable gland for onshore and offshore applications with metric threads for use

in Zone 1, Zone 2, Zone 21 and Zone 22 hazardous areas with all types of armoured cables.

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ex e cable glands


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Series 8161> Intrinsic safety (Ex i) version available> IP 66> as single or multi-cable entry> integrated plug (accessory) for closing unused

cable entries

Series HSK-MZbell mouthed cable glands in metal Ex e> IP 68> for portable equipment

Series HSK-K-MZbell mouthed cable glands in plastic/aluminium Ex e> IP 68> for portable equipment

1 3 Series 8163/2-C2Kcable glands Ex efor all types of armoured cable> suitable for use with offshore and onshore

cables, with outer seal> incorporating internal deluge seal for arduous

conditions> reversible armour clamping cone and uni-fit

clamping ring

Series 8163/2-CWecable glands Ex efor SWA cable with outer seal> suitable for use with onshore cables

Series 8163/2-CXecable glands Ex efor wire braid armour cables with outer seal> suitable for use with onshore cables

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10ex d cable glands

selection

Cables come in a wide variety of shapes and sizes, and newdesigns are regularly being introduce. For example, oneswith optical fibres. The issue of correctly sealing thesecables as they enter hazardous area electrical equipment is a worldwide problem, and not confined purely to localconditions. Although there are no IEC construction standardsfor the cables intended for use in flammable atmospheres,according to IEC 60079-14 if a cable gland with an elastomeric flameproof seal is to be used, the cable should> be substantially compact and circular (i.e. especially

the part of the cable entering the enclosure)> have an extruded bedding (without any gaps)> have fillers, if any are used, which are non-hygroscopic.Effectively, the cable must be assessed to verify its suitablity to prevent gas penetration and migration along its length, as well as its ability to prevent explosion transmission through the cable, before any cable gland withan elastomeric seal can be selected. Beyond this otherexceptions still exist. The IEC installation code of practice IEC 60079-14 is veryclear about the selection of cable glands for use with Ex d enclosure types.

Cable Gland Selection according to IEC 60079-14

Regarding the subject of cable glands to maintain integrityof type of protection flameproof enclosures Ex d using direct cable entry into the flameproof enclosures, special selection criterions have to be considered as defined in Section 10 of IEC Standard IEC 60079-14 “Electrical apparatus for explosive gas atmospheres Part 14: Electrical installations in hazardous areas (other than mines)”.

In order to achieve compliance with the prevailing Code ofPractice, and in particular IEC 60079-14, it is necessary to evaluate the function of the equipment, the cable gland,and the cable. Furthermore, in order to satisfy the conditionsof the applicable standards compatibility of all three witheach other must also be verified. Section 10 of IEC 60079-14“Additional requirements for type of protection Ex d Flameproof enclosures” regarding the selection of cableglands must be followed. Specific rules to ensure integrityand safe operation of the installed equipment are also set out here.


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If the cable gland is not certified as part of the equipmentbut tested and certified as a separate component, and the used cable is substantially compact and circular theselection chart can be used

> if the cable is not round in appearance, or visually appearsto allow air to pass through its interstices because the cable construction is not adequately filled, then a com-pound barrier type cable gland could be selected.

> in the case of flameproof enclosures Ex d, the function of the elastomeric sealing ring, which is applied to thesection of the cable entering the equipment is to provide a gas tight seal around the cable bedding and preventexplosion from penetrating the cable sealing point so thatthe explosion cannot be transmitted to the externalatmosphere.

> if the cable is not round, it is not possible to rely upon anelastomeric seal to perform a sealing function around thecable sheath. An example of a cable that fits this scenario

is a twisted pair instrument cable where the insulatedconductors beneath the inner cable bedding do not usually offer a round (circular) surface on which to seal. If the inner bedding follows the same shape, then anelastomeric seal may struggle to seal effectively aroundthe cable circumference. The effect is often more notice-able with single pair cables, and it may be necessary to fita compound sealing barrier type cable gland to overcomethe situation, depending upon the form of protection and cable entry configuration of the apparatus enclosure.

> equally, if the cable is not adequately filled, and allowsthe passage of air or gas along the cable length, thenthere would be no protection to the inner part of the cablewhen an elastomeric sealing ring is used. In this case a compound barrier type cable gland is the only safe solu-tion, and is necessary in order to maintain the integrity of the equipment and prevent gas migration betweenequipment or between hazardous areas and safe areas.


The 8163/2 series hazardous area metallic cable glands are available for non-armoured, and all types

of armoured and braided cables. They fulfil all of the requirements of the European ATEX-directives and fully

comply with the latest IEC standards. 8163/2 series cable glands are available in single seal

and double seal orientations, and the double seal cable glands incorporate a displacement seal on the cable

inner bedding. Their modular design and wide cable acceptance range allows a broad variety of cables

to be terminated in a single cable gland without the need for alternative seals or clamping arrangements to

be ordered. In addition to normal sealing of the cable sheath, secure clamping of the single wire

armouring is essential as this armouring is used, not only for mechanical protection, but also contributes

to the electrical protection. In the event of an earth fault, the armouring acts as an earthing conductor,

and the earth continuity system is maintained via the cable gland. According to IEC 60079-0:2004, when

intended for use with braided type cables, the cable gland outer seal must also provide cable retention under

tensile load conditions without the braid being clamped. R. STAHL’s 8163/2 series cable glands

are certified in accordance with this requirement. These cable glands are intended for use with Ex equipment

and are provided with triple certification Ex d, Ex e and Ex nR, making them suitable for use with

flameproof (type d), increased safety (type e) and restricted breathing/non-sparking (type nR/nA) enclosures.

12triple certified

ex d, ex e, ex nR


13modular design

Series 8163/2-A2F (offshore and onshore)Ex d, Ex e and Ex nR for unarmoured cables

Series 8163/2-E1FXZ (onshore)Ex d, Ex e and Ex nR for wire braid and STA cables with inner and outer seal

Series 8163/2-E1FW (onshore)Ex d, Ex e and Ex nR for SWA cables with innerand outer seal

Series 8163/2-E1FU (onshore)Ex d, Ex e and Ex nR for all types of armouredcables with inner and outer seal

Series 8163/2-E2FW (onshore)Ex d, Ex e and Ex nR for lead sheathed SWAcable with inner and outer seal

Series 8163/2-E2FU (onshore)Ex d, Ex e and Ex nR for all types of armoured andlead sheathed cables with inner and outer seal

Series 8163/2-T3CDS (offshore and onshore)Ex d, Ex e and Ex nR for all types ofarmoured cables with inner and outer seal> incorporating internal deluge seal for arduous

conditions> reversible armour clamping cone and uni-fit

clamping ring ensuring right first time cable termination

> unique compensating displacement seal (CDS) system used on the cable inner bedding

Series 8163/2-PXSS2K (offshore and onshore)Compound barrier glands Ex d and Ex e for alltypes of unarmoured cables

Series 8163/2-PX2K (offshore and onshore)Compound barrier glands Ex d and Ex e for alltypes of armoured cables

inner seal housing body and outer seal housingreversiblearmour cone

uni-fit armour clamping ring


TRITON CDS delivers a unique concept in cable sealing techniques incorporating the compensating displace-

ment seal system, CDS. Introduced to effectively handle all types and sizes of cable construction

reducing worry for the operator and letting the product do the job. This concept provides effective sealing on

the cable inner sheath, utilising a proven reliable and robust flameproof sealing device installed with

a “best in class” manner. Taking a crucial cable care principal into account in its design, this concept leaves

nothing to chance yet delivers the ultimate in assembly and installation simplicity. This guarantees a

safety level that is unsurpassed by any other cable gland available. Because of the presence of the CDS

sealing system, during installation the cable gland is fully tightened metal to metal every time regardless of

cable diameter. A reliable “O” ring arrangement, which is concealed and protected from damage after

installation and during service, fulfills this role. The 8163/2 T3CDS series TRITON CDS is also triple certified

Ex d, Ex e and Ex nR, and additionally provides deluge protection with extra deluge test approval to DTS 01:91.

Continuous operating temperature ranges from –60°C to +130°C.

14triton cds

ex d, ex e, ex nR


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Inner seal housing> robust explosion proof CDS system, less susceptible

to damage than equivalent diaphragm seals.> no need for cable guide to protect CDS system

as cable conductors do not penetrate or damage the explosion proof seal as they pass through it.

> flameproof seal does not tear or split as a result of frictional rotation during installation.

> flameproof inner seal remains in the cable gland,and does not ride on the cable, and therefore is not prone to mechanical damage when the cable needs to be withdrawn from the equipment.

> remote take off, disconnection and re-connectiondoes not jeopardise the safety integrity of the Ex apparatus.

> inspection can be affected without disturbing the inner seal.

Deluge protection seal> deluge protection by means of tried and

tested “O”ring feature – simple and effective arrangement.

> internal deluge seal is not exposed to mechan-ical damage or ultraviolet radiation after installation and is completely protected in its operational working life, offering total reliability.

> There is no need to “pull” or re-position the deluge seal on installation or subsequent re-assembly after inspection, as the R. STAHL “O”ring arrangement engages automatically during a simple installation procedure providing effective protection every time.

When a larger diameter cable is installed,the inner compensator is effected to a greater extent

When a smaller diameter cable is installed,the inner compensator is effected to a lesser extent

CDS compensator

inner seal housing deluge seal deluge sealinner seal housing

CDS compensator


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accessories

A range of accessories and thread conversion adaptors and reducers are offered to compliment the 8163/2

series cable glands. These include locknuts, serrated washers, sealing washers, earth tags and shrouds.

Locknuts are recommended to secure cable glands, unions, adaptors, reducers, and stopper plugs to a gland

plate or into equipment. Serrated washers fitted internally to the equipment and before a locknut act as

an anti-vibration device to prevent the cable gland or other cable entry device and locknut arrangement from

inadvertently loosening in service. Entry thread sealing washers fitted at the equipment interface are fitted

to maintain the ingress protection level of the equipment. For explosion protected equipment it is essential to

maintain the integrity of the degree of ingress protection at which the equipment has been rated. Slip on

earth tags installed between the cable gland and equipment, provide an earth bond connection as specified in

BS6121:Part 5:1993 and also comply with category B rating as specified in BS EN 50262. A range of push on

shrouds, which are used to minimise the risk of dirt or foreign substances gathering on the cable gland body,

and/or point of cable to gland interface are also available. Standard shrouds are produced in black PVC.

Thread conversion adaptors and reducers are available that convert the cable gland to a different thread type,

or enlarge or reduce the threaded connection between the equipment entry hole and the cable entry device.

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conductor bushings Ex dThe conductor bushings are Ex-components, whichprovide the connection between electrical equipment within an enclosure and external circuits.They are flameproof and form – when fitted into a flameproof enclosure – an ignition- andexplosion-secure seal.

accessories> locknuts> earth tags> sealing washers> serrated washers> flat washers> shrouds> enlargements, reducers in moulded plastic> adapters and reducers in metal> earth conductor bushings Ex e

red plugsThe plugs are for closing unused cable entries ofseries 8161.

stopping plugs> in moulded plastic> in metal

breathing glands> in moulded plastic> in metal

post type bushings Ex dThe feed-through connectors provide a flameproofelectrical connection between two flameproofenclosures or one flameproof enclosure and a connection space with a different explosion protection type.

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ID-NR. 00 006 41 76 0S-PB-Cable glands-00-en-03/2007 · Printed in Germany

VISU

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R.STAHL Schaltgeräte GmbHAm Bahnhof 30, 74638 Waldenburg, GermanyTelephone + 49 7942 943-0 Fax + 49 7942 943-4333

www.stahl.de


ex cable glands

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type of cable

cable gland products

new standards

cable overall diameter

uhr seite

safety standards

ex e cable glands

ex d cable glands