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Anonymous Poster

4 Sector Solidal

09/22/2010 3:11 AM

I need to terminate a 70sqmm aluminium cable (I believe it referred to as 4 sector Solidal). I don't have access to a crimper to fit lugs. What's the best way to connect the cable?

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#1

Re: 4 sector Solidal

09/22/2010 4:02 AM

The best way is to contact the manufacturer for advice, and then follow that advice.

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#2

Re: 4 sector Solidal

09/22/2010 4:31 AM

I would suggest hiring or purchasing the correct tool, or switching to a different approved cable termination method (there is generally more than one way to terminate this type of cable).

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#3

Re: 4 sector Solidal

09/22/2010 4:58 AM

There's two ways, both involve brute force and ignorance!

1/ bend the core in to a question mark around a bar the size of the terminal bolt leaving as little gap as possible in the throat of the ? You have then got to make a flat face on the conductor to mate with the contact surface. Put the conductor around a bolt with a couple of heavy gauge washers at the head add another couple of washers so you have a sandwich (bolt, washer, washer, core, washer, washer) put a piece of pipe over the bolt and then belt seven bells out of it until you get a flat face for the terminal. But don't go mad and waste the core away.

2/ if you can get lugs but no crimper, place the Vee of the lug in to an engineers Vee block. With a round nose punch (about 5mm for 70mm), punch indents in to the curved face of the lug about 5mm deep repeat along the length of the lug orifice at about 8mm intervals. Don't go mad with this one either you'll split the lug if you do.

I've done both, both were in use for over 15 years without problems.

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#4

Re: 4 sector Solidal

09/22/2010 7:39 AM

Use molten tin to solder the lugs on to the conductor.

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#5

Re: 4 sector Solidal

09/22/2010 11:11 AM

Unless you've soldered aluminium before don't attempt it. You need to control the temperature of the solder to within 10 deg C at 570 deg +-5. Aluminium melts at 620 deg. You may find yourself with a blob where your cable was!

As a follow on from my last suggestion don't forget to use an anti oxidising paste on the joint. Densal paste is the best but Vaseline will do at a pinch.

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#6

Re: 4 sector Solidal

09/22/2010 11:41 AM

Going to go with Tonys belt it idea. Tried a bit of a off cut to make the loop terminal, it looks real neat.

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#7

Re: 4 sector Solidal

09/22/2010 2:06 PM

Melting point of Tin is only 232.06 deg C where as Aluminium melts at 660.25 deg C. ( http://en.wikipedia.org/wiki/List_of_elements_by_melting_point )

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#8

Re: 4 sector Solidal

09/22/2010 3:23 PM

Just going by what it says in my electricity board cable jointers book.

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