Schlemmer Cable Cleat Guide

8/18/2019 Schlemmer Cable Cleat Guide

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Your Cable Cleat Guide

October, 2014


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October, 2014Cable Cleat Guide 2

Introduction to cable cleats


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Contents

What is a cleat?.....

Variations of cleats available

Manufacturers worldwide

Definitions and terminology of cleats

Typical installation methods

Typical forces acting on cleats

Typical applications for cleats

Factors effecting the choice of cleats

Schlemmer range of cable cleats


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What is a cleat?.....

Fixing device to secure cables in formation or

To attach and secure cables within installations.


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Variations of cleats available

There are many different types and styles

manufactured from many different materials available


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Manufacturers worldwide

Cooper B Line

CMP Products

DutchclampEllis Patents

Oglaend

Aeron

Prysmian

DB

!ntertech

Po"er Electric


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International standards of cleats

BS EN61914:2009 =

IEC 61914:2009


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Cable formation

M#LT!PLE $ % or more &'#AD

!()LE T*!( T+E,O!L


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System fault current –

maximum potential current that could flow during fault

conditions.

RMS fault current –

root means square value of current typical the effective

current level

Peak fault current –

the peak current level reached during fault conditions

which can be from 2.2 to 2.6 times rms current.

Crest or Peak factor –

system factor used to calculate maximum expected peakfault current usually between 2.2 and 2.6


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Cleat spacing – distance between cleat centres

Straps – are cleats which are not secured to the installation infrastructure

Cleat spacingCleat spacing


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Cleat spacing

many factors govern the maximum distance between cleat centres

for safe correct installation.

• Cable manufacturer’s installation recommendations• System fault current

• Cable diameter

• Cable formation

• Cleat type

• Installation axis – vertical, horizontal

• Supported by tray, ladder or basket

The correct way is to calculate the maximum distance based on the

Force that each cleat can withstand, using the formula.


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Installation method

Installed and fixed to infrastructure

by fixing bolt(s) in base plate


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Typical installations

Installed on cable ladder or

unistrut channel frame either

vertically or horizontally


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Typical installations

Installed on cable tray

either vertically or

horizontally


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Typical forces acting on cleats

Forces which act on cleats under fault conditions

Trefoil formation e-periences thehighest amount of force during fault

conditions

Cable centres

As force is proportional to the distance

bet"een cable centres that the

greater or larger forces are generated

or seen "hen the cable centres arecloser together


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Incorrect cleating MOVIE


../0111 amps $../ 2A& pea2


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Incorrect cleating MOVIE



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Estremo Cleats test MOVIE


.340111 amps $.34 2A& pea2


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Typical applications for cleats

Oil0 )as and

Petrochem

industries

+ail 5 overland

underground

infrastructures

Electricity

distribution

net"or2s

*indfarms

!ndustrial

installations

Mining


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Non cable applications for cleats

,le-ible and corrugated

conduits and tubes

Plastic "ater pipes

Copper pipestainless or rigid conduit systems and pipe

runs for industrial and dairy industries


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Factors effecting the choice of cleats

.6 ystem fault current

76 Environment of the installation

86 Cleat material

96 :oltage level

%6 ,ire performance

46 ,i-ing strength

36 Cable formation

/6 Cable specification

;6 !nstallation specification

.16 Cable fit

..6 Correct cleat spacing


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The Schlemmer range

Estremo range

Estremo T Estremo S


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The Schlemmer range

Estremo range


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The Schlemmer range

Forte range

Forte T Forte S


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The Schlemmer range

Forte range


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The Schlemmer range

Mezzo range

Mezzo T Mezzo S


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The Schlemmer range

Mezzo range


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The Schlemmer range

eggaro range

eggaro T eggaro S


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The Schlemmer range

eggaro range


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Schlemmer GmbHGruber Strasse 48

85586 Poing / GERMANYPhone +49 (0)8121 804-0

[email protected]

www.schlemmer.com

www.schlemmer-ecotech.com

Feedback? questions?Thank you for your attention.

Documents

Schlemmer Cable Cleat Guide