14www.cmp-products.com

CMPC A B L E G L A N D A N D C A B L E C O N N E C T I O N S P E C I A L I S T S

5

CMP

Category C, is the highest requirement, which may apply in cases where steel wire / metallic sheathedarmoured cable is used and the system relies on a low sensitivity method of secondary protection againstfault currents and where integral earth lugs (e.g. CMP CIEL) are incorporated into the cable gland. (seepage 28 and 100 for further details).

4) Resistance to external influences i) Ingress Protection Minimum of IP54, ii) Salt & sulphur ladenatmospheres.

In respect of 4) i. above CMP Products can confirm that its minimum Ingress Protection rating is IP 66 toIEC 60529. Please see individual cable gland catalogue pages for further information.

To meet the requirements of 4) ii. above CMP would recommend electroless nickel plating when cableglands are required to be installed in salt laden atmospheres. In addition stainless steel or copper freealuminium cable glands are recommended for use in sulphur atmospheres and stainless steel with aminimum grade 316 for use in H2S atmospheres.

For comparison purposes only, set out below are some of the key differences between BS6121:1989and EN50262:1999.

Test BS 6121 EN 50262

Cable Gland Type Designation Specified as per Cable Sealing Concept Not Specified

Cable Gland Construction Across Flats & Lengths Specified for eachCable Gland Size

Not Specified, Each manufacturer can bedifferent

Cable Acceptance Specified for both Inner and Outer Sheaths foreach Cable Gland Size

Not Specified, Manufacturer must state cableacceptance range in its literature

Ingress Protection Rating Must be Minimum of IP66 Must be Minimum of IP54

Armoured Cable Pull Out Specified but varies with Cable Gland Size,Minimum 2.7kN to Maximum 8.83kN

Varies with Cable Diameter not Cable GlandSize, Minimum 75 Newtons to Maximum 450Newtons

Unarmoured Cable Pull Out Specified but varies with Cable Gland Size,Minimum 2.7kN to Maximum 8.83kN

Varies with Cable Diameter not Cable GlandSize, Minimum 4 Newtons to Maximum 70Newtons

Twist Test Not Specified Torque applied which varies with Cable Size,Minimum 0.1 Newtons to Maximum 1.2Newtons

Impact Level Not Specified (Due to Torque & Constructionbeing so detailed)

8 Categories Specified, Minimum 0.2J toMaximum 20J

Proof Torque Specified but varies with Cable Gland Size,Minimum 2.7kN to Maximum 8.83kN

50% above the manufacturers statedInstallation Torque

Electrical Resistance Cable To Gland Two Tests, Not more than 10% difference Isallowed.

Specified 0.1 Ohm allowed

Earth Fault Rating Not Specified due to high cable pull outresistance

Specified Categories A, B, or C. Minmum 1.0kA to Maximum 43.0 kA

Temperature Range Not Specified, Dependent upon the SealMaterial

Specified minimum range of -25 C to +65 C

Seal Compression Test After Conditioning, No more than 25%variation

Not Specified

Seal Ageing / Hardness Test After Conditioning, No more than 15%variation

Not Specified

TECHNICAL&APPLICATIONINFORM

ATIONBASE