Ther­mal imag­ing

DEMM Engineering & Manufacturing - - CONTENTS -

Ca­ble re­pair com­pany Becker & Hüser uses a Flir ther­mal imag­ing cam­era to quickly spot faults in ca­bles.

Heavy in­dus­tries such as min­ing, ship­build­ing or crane works, rely on heavy, rugged, in­dus­trial ca­bles to en­sure con­tin­u­ous power or com­mu­ni­ca­tion per­for­mance.

When­ever such a ca­ble brakes down, there’s usu­ally a big prob­lem in terms of pro­duc­tiv­ity, down­time and money lost. That’s where Becker & Hüser comes in.

This Ger­man ca­ble re­pair specialist helps its cus­tomers to be back in busi­ness in the short­est amount of time. To of­fer their cus­tomers the quick­est ca­ble re­pair ser­vice pos­si­ble, the firm makes use of ther­mal imag­ing cam­eras from Flir Sys­tems to lo­cate the prob­lem.

Becker & Hüser has been renowned for more than 30 years for its high-qual­ity ca­ble re­pair ser­vices. It has an ex­pe­ri­enced team of ca­ble spe­cial­ists for re­pairs ei­ther at the site of the cus­tomer or at the com­pany plant.

Time gains

An­dreas Becker, man­ag­ing di­rec­tor at Becker & Hüser, says: “The ca­bles that our in­dus­trial cus­tomers are re­ly­ing on are of­ten used in harsh con­di­tions; think of the min­ing in­dus­try, for ex­am­ple.

“Ca­bles also move around a lot, so it is no won­der that they are dam­aged and break down from time to time. We are there to help com­pa­nies with fast re­pair ser­vices, so they can re­duce their down­time as much as pos­si­ble.”

Com­pa­nies do not al­ways have ca­bles on stock. So when a ca­ble gets dam­aged, they will need to choose be­tween re­pair and buy­ing a new ca­ble. The for­mer op­tion usu­ally pro­vides the high­est time gains.

“Wait­ing for a new ca­ble some­times re­quires months. We can re­pair a ca­ble in mat­ter of weeks or days, some­times even hours,” says Becker.

“This can re­ally make a dif­fer­ence, for ex­am­ple in the case of ca­ble dam­age on a ship that needs to leave the har­bour.”

In ad­di­tion, Becker & Hüser man­ages to re­turn the ca­ble to the cus­tomer as good as new, with the same prop­er­ties, in terms of di­am­e­ter, f lex­i­bil­ity and ten­sile strength.

Ca­ble re­pair in­cludes a lot of in­evitable man­ual labour. Con­nect­ing the enor­mous tan­gle of fi­bres which even­tu­ally con­sti­tute the whole ca­ble is a metic­u­lous and time-con­sum­ing job for spe­cial­ists.

But also for fault de­tec­tion, there is no magic trick to quickly lo­cate a fault in­side a ca­ble. Becker & Hüser uses a surge volt­age gen­er­a­tor for lo­cat­ing and pin­point­ing high and low re­sis­tance faults in power ca­bles.

The stored en­ergy of the high volt­age ca­pac­i­tors is fed at in­ter­vals in to the faulty ca­ble. This causes noise at the fault po­si­tion which can be de­tected ei­ther on sight (a high volt­age surge can gen­er­ate sparks), by feel­ing

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