LSFCable

The abbreviation LSF merely indicates that, in the case of flame impingement on the cable, they produce Low Smoke and Fume levels.

As to the suitability of LSF cables, it depends entirely upon the purpose of the installation, which isn't stated in the original post.

i am mentioning below the our specifications

OUR ENGINEERING SPECIFICATION

type : CU/XLPE/SWA/flame retardant outer sheath

service : for motor power and utilities

Installation : on cable trays

flame property : flame retardant outer sheath

nominal voltage rating : 600/1000V

operating temperature : 90 deg centigrate

temperature during fault condition: 250 deg cent

sizes : 4cx240sqmm, 4cx35sqmm,4cx300sqmm,4cx16sqmm,3cx2.5sqmm

ambient temp : - 10 deg cent to +50 deg cent

tests reports : high voltage test, insulation resistance test , partial discharge test

Received cable from vendor is

above sizes , CU/XLPE/SWA/LSF 600/1000V

PLZ advise me wheather the received cable satisfy minimumflame proof requirement or not .

vendor denies to give any test reports including flame proof certificate.

waiting for reply. plz help me.

<...the received cable satisfy minimumflame proof requirement or not...>

The assessment needs to be carried out by the recipient on the basis of the user's requirements, and not on the basis of source-protected replies to a global engineering forum!

Let us take another look at this. Your specification says:

type : CU/XLPE/SWA/flame retardant outer sheath

Your contractor supplied:

Received cable from vendor is above sizes , CU/XLPE/SWA/LSF 600/1000V

You didn't get what you ordered, now did you.

Sounds to me like payment withheld will get you the proper material, or the documentation that material supplied is, in fact, within your specifications.

Why are you bothering to do your vendors job? If he wants a check, he must perform.

Something occurs to me that might interfere with this...

One of the great forces is the Lever. Money held back gives YOU a lot of LEVERAGE in this case.

Now, the bad thought... have you already paid this guy? If yes, your leverage has just been diminished a whole bunch! If not, then you will get what you want if you apply this force. Guaranteed!

Hello,

It is up to your purchaser when requesting a quote for an item, that the quote received, matches the requirements of the request. If this was done correctly and the order placed with a po, I have found it common practice in the terms of a purchase order to be listed "Certificate of Compliance Required".

If the vendor refuses or is unable to provide this, do not use the product!! Weather it appears to be the correct item or not. If there is ever a safety issue, say a transit car derailment, investigating authorities may very well come knocking on your door to provide proof of compliance.

You have every right to return the product and demand credit to the invoice. Of course this does not satisfy your immediate need, but it will keep your $$s to purchase the correct product and cover your ..... self :)

You need to find out from the cable data sheet or from the cable manufacturer whether the supplied cable is flame reistant or flame retardant cable. LSF doesnot mean that a cable if FR or fire resistant type.

<...minimumflame proof...>

The term "flameproof" usually means equipment and circuits designed to British Standard 60079 EEx d for use in potentially explosive atmospheres.

There is no requirement to use LSF cable for BS 60079 EEx d applications. Steel Wire Armour would be good idea, though.

Let's first see what Flame Retardant, Fire Resistant, LSZH and LSF actually mean.

Flame Retardant: Flame Retardance is the property of the substance, or a treatment applied to a material, whereby the propagation of a flame is markedly retarded. The insulation and jacket of flame retardant cable is made of the substance having flame redardance property so that the cable eliminates the fire propagation.

Fire Resistant: Cable can withstand and continue service in fire. A fire resistant cable is suitable for use in critical and emergency signal paths, such as, fire alarm systems or emergency lighting.

LSZH (or LSZH or LSHF): This type of cable uses insulation and sheathing materials that do not emit more than 0.05% Halogens (poisonous gases in particular hydrogen chloride), and have reduced smoke emission properties.

LSF: It produces low smoke but is not totally halogen free (can emit up to 22% hydrogen chloride). Basically it is an improved PVC cable. Obviously, it is less expensive than LSZH.

Halogens (Chlorine, Fluorine, Bromine and Iodine) are cheapest flame retardant material and are used with cable insulation (such as Chlorine in PVC) to increase its flame retardant property but cables made flame retardant by halogens produce smoke and toxic gases when it burns. Hence, the special insulation and sheathing materials are used in LSZH or LSF cables so that it is flame retardant as well as produces low smoke and low toxic gases. In most cases, the LSZH or LSF cables are flame retardant. However, they always may not be flame retardant. So, make sure with the cable manufacturer that the cable you received is flame retardant.

The following links may be further help:

http://www.fscables.com/pdf_info/LSHF.pdf

http://www.addison-tech.com/product/fiber-resistant.htm

http://www.drakact.com/dtc/files/Infoblatt_2005_01_Flammwidrigkeit_e.pdf

- MS

thank you sir

i am grateful to you

thanks again.... I understood fully about the matter

Hello Guest,

The problem with posting as a guest is I do not know if all the 'Guests' on this thread are the same person or not? Get me?

Why do you not join. It costs nothing but five minute to enter your details, and the people are very helpful, especially when talking to other members! We are kind, good looking, sweet, extremely helpful and welcome any new skills a guest now member brings!.......... Let me rephrase that, ignore the "good looking and sweet" bit OK?

That being said, what exactly do you want to use this cable for?

There is a world of difference between a cable spec and its intended use.

This sounds obvious I know but, it would be easier to quote your use and ask for an appropriate cable, OK?