BS EN -7 is a sectional specification that covers multi-element cables suitable for connecting instruments and control systems for analogue or digital signal transmission. They may or may not be screened and optionally may incorporate armouring and/or moisture or environmental protection layers.

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BS EN -7: Multi-element metallic cables used in analogue and digital communication and control. Sectional specification for instrumentation and control cables.

The cables shall have a mechanically robust construction and electrical transmission handling properties. The electrical, mechanical, transmission and environmental performance characteristics of the cables, related to their reference test methods are detailed.

BS EN -7 is to be read in conjunction with BS EN -1, which contains the essential provisions for its application. Cables covered by this specification have maximum rated voltages of 90 V, 300 V and 500 V a.c.

These cables shall not be connected directly to mains electricity supply or other low impedance sources. Multi-element cables for use in analogue, digital and control circuits are not designed to be used for power supply.

These cables should be installed in accordance with the applicable local and national regulations. Cables intended to have limited circuit integrity in a fire are not covered by this specification, but they are however under consideration for future editions.

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XLPE power cable, which standard is better IEC or BS

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XLPE power cable, which standard is better IEC or BS

XLPE power cable, which standard is better IEC or BS

sramesh

(Mechanical)

(OP)

11 Aug 08 06:22

Good day to all

I am doing a project of adding a LV motor to the existing plant. The Power cable as per our specification is according to IEC and Contractor is offering BS . Is there any technical difference in the construction of the cable between IEC and BS standards. One of my colleague says IEC rated cable insulation thick ness is more for the same rating compared to BS rated cable. Is it true. I request your valuable advise before accepting BS rated cable.  Thanks in advance .. Ramesh   

RE: XLPE power cable, which standard is better IEC or BS

burnt2x

(Electrical)

11 Aug 08 11:02

IMO, IEC cables are larger in overall diameter compared with BS cables for the same conductor size(rating). I cannot see any significant difference in insulation thickness between the two standards!
 

RE: XLPE power cable, which standard is better IEC or BS

sramesh

(Mechanical)

(OP)

12 Aug 08 00:57

Thanks for the reply, When contacted the cable vendor IEC rated cable will be higher cost compared to BS standard cable. he is only a sales guy and not able to explain technically why? i have asked the vendor to justify on the cost difference.Another thing is , if the Over all dia is more for IEC spec, I hope the tickness of the insulation should be more. I have the IEC standard copy but not the BS . I am not able to compare exact difference between standards. The reason i need this information is, Our company spec is IEC and If we decideto buy BS standard cable I have write justification for deviation from original specification. Thanks again for your reply

RE: XLPE power cable, which standard is better IEC or BS

homoly

(Electrical)

18 Aug 08 04:34

Just check the flammability, but from conctrete example

http://www.nexans.fr/eservice/Germany-en/navigate_/BS__Armoured_SWA_Flame_retardant.html#top

seems that IEC -1-2 is fulfilled in both cases but the best way is to compare concrete 2 cables not standards in general.

The IEC covers also unarmored cables and BS only armored so this is in my opinion the only thing you should be aware.Just check the flammability, but from conctrete exampleseems that IEC -1-2 is fulfilled in both cases but the best way is to compare concrete 2 cables not standards in general.

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