SPS • Standard Produkte Schwanenmühle GmbH, Business Park Schwanenmühle, D-66851 Schwanenmühle
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Standard Produkte Schwanenmühle GmbHfrende

ISOFLEXX® Classic Ampacity





Standard length 2000 mm, available in lengths from 250 to 3000 mm on request / 1 Other dimensions on request / 2 Heating of busbar depends on: current strength, ambient temperature, heat dissipation, laying method, installation, application / Multiplication factor of 1.72 if 2 bars are used, multiplication factor of 2.25 if 3 bars are used in parallel arrangement based on DIN 43 671/Available in the color gray (standard) / The SPS product ranges are continuously extended









Standard length 2000 mm, available in lengths from 250 to 3000 mm on request / 1 Other dimensions on request / 2 Heating of busbar depends on: current strength, ambient temperature, heat dissipation, laying method, installation, application / Multiplication factor of 1.72 if 2 bars are used, multiplication factor of 2.25 if 3 bars are used in parallel arrangement based on DIN 43 671 / Available in the color gray (standard) / The SPS product ranges are continuously extended.





Technical Data Overview Isoflexx®







ISOFLEXX® bar screw connections

The following standards should be observed:

DIN 43671 and 43670: Busbars with rectangular cross-section
DIN 43673: Busbars - drilling and crew connection

 

Creating busbar connections:

It is generally advisable to tighten non-rusting screws with a torque wrench. In addition, sprung elements should be used that can maintain the required contact pressure. The tension discs maintain the tension force within a defined range and are therefore also recommended for the fixing of screws.

 

Sufficient tension force prevents the screws from loosening by themselves. This facilitates maintenance of busbar connections. In fact, no maintenance may be necessary at all.


In the case of vibrations etc., micro-encapsulated screws or other screw fixing devices should be used.

 

With DC and AC current up to 6300 A, connecting material (bolts, nuts) of strength class 8.8 or higher (DIN 267T3) can be used in indoor areas.

 

Treatment of contact surfaces:

The surfaces should be even but not polished. The contact resistance is lower if the contact surfaces have medium coarseness (RA 1.6-3.2) as this makes it easier to pass through the oxides. However, the contact surfaces should be free of oxidation and grease. If this is not the case, you must clean the contact surfaces.




Boreholes DIN 43673






Drilling measurements




All dimensions in mm






1Specify Length (LA), Borehole (D) and Spacing (RA)

2 Nominal current at 35°C ambient temperature and 85°C conductor temperature

The conductor temperature caries accordingly with higher or lower ambient temperature;

max. operating temperature: 105°C

Deviating current loads can be converted using the factors listed in DIN 43671.








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