Satellite system - buying guide and installation

  • Erstellt am 2019-06-08 12:51:38

Dipol

2019-10-13 15:44:16
  • #1

Not 16 mm diameter but 16 mm² cross-section.

Grounding conductor made of 16 mm² Cu in solid as well as heavy, difficult to fix multi-strand design must be connected to the antenna support with Class H connectors certified for 100 kA for the wire type used, such as

    [*]Band clamp DEHN 540 103, OEM also KATHREIN ZEU 168
    [*]Band clamp PRÖPSTER 111 393

and must not be cut through a PAS, of which according to the test report available to me ONLY the outer clamps for band and round steel Class N = 50 kA are certified and the middle clamps for 16 mm² Cu are not tested at all. This PAS would weaken the lightning current carrying capacity and is not needed for the equipotential bonding of the earth block, earth angle, and EXR housing on the grounded antenna support, so better remove it.

Also, at the grounding conductor’s termination point, an HES for lightning protection equipotential bonding with tension clamps and connection to a standard-compliant earth electrode is required if it is not to become one of the unfortunately common cosmetic groundings with questionable lightning current carrying capacity.

If your fingers, maltreated by technically outdated F screw connectors, still allow it, the LNB cables should be laid as a loop, because otherwise, they are hardly removable. For the next antenna installation, use finger-friendly connectors according to the state of the art or at least a screwing aid.
 

Golfi90

2019-10-13 20:17:24
  • #2
Once again for dummies please... So I have to run the 16mm2 cable directly to the antenna mast. So far so clear. How do I ground the remaining things then? Unfortunately, I only understood "train station" there. I thought this distribution block was specifically for distributing the grounding... btw. Is this thin grounding cable even sufficient? Or would a thicker grounding cable (4mm2) be better?
 

Dipol

2019-10-14 01:17:12
  • #3

Well, at least that much!

Now it’s getting completely confusing. Thick only fits a 16 mm² lightning current-capable grounding conductor and thin fits a 4 mm² PA conductor, right?

Final attempt with illustrated graphic showing the 4 mm² Cu in color as PA conductor. Grounding conductors, like down conductors of lightning protection systems, should primarily run vertically and via the shortest possible path to the HAE; horizontal runs should be made as close to or below ground level as possible. Grounding and PA are integral parts of the electrical system and installations according to NAV § 13 are reserved for licensed electricians.


If the HES is not lightning current-capable as usual, don’t even think about replacing it yourself—you lack the expertise. However, nowadays it’s also not easy to find a norm-competent electrician who knows that the HES must be lightning current-capable.
 

Ippebson

2019-10-14 05:01:52
  • #4
One more question : Is it allowed to attach the grounding cable 16 mm^2 and the PE cable 4 mm^2 together with one (1) clamping bracket on the antenna mast, or do there need to be 2 separate brackets? Thanks and best regards
 

Golfi90

2019-10-14 05:56:14
  • #5
Would you just answer in layman's terms without any technical terms like scholars know, people would understand what you mean without having to ask stupid questions. Instead, you try to explain it as complicated as possible... My goodness. Your graphic helps me. Thank you.
 

Dipol

2019-10-14 07:20:47
  • #6

Grounding is a fire protection measure, potential equalization serves to protect against electric shock.

Since there is no clamp on the market certified for 100 kA that is designed for both 16 mm² Cu AND 4 mm² Cu, a second connection point is needed. With some craftsmanship, the 4 mm² Cu can also be connected in accordance with standards using a cable lug or a threaded screw.
 
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