bonding path resistance

07:34 Mar 9, 2021 

rezystancja przewodu ochronnego / rezystancja połączenia wyrównawczego/ochronnego [?]

Propozycje po konsultacji z inżynierem el. Propozycja Franka może być zatem poprawna.

http://solarabcs.net/about/publications/reports/module-groun...

17:23 Mar 8, 2021 

Dziękuję Michale. Rzeczywiście to jest rezystancja.

17:13 Mar 8, 2021 

@ Frank - chodzi o jedną literkę - powinno być -a-, nie -e- w słowie rezystancja. Termin prawidłowy to rezystancja lub opór elektryczny (czynny), oporność;

16:33 Mar 8, 2021 

Grounding and bonding as electrical installation protocols overlap to a certain extent, but they are not identical. In bonding, the emphasis is on creating low-impedance electrical connections between two or more conductive (metallic) bodies that are not normally current-carrying. These bonded objects are usually but not always grounded. Often metallic bodies are bonded back to the enclosure of a load center, and ultimately to the neutral bar at the electrical service, which is in turn grounded.

11:21 Mar 8, 2021 

The ANSI/UL 2703 mechanical strength, electric bonding and grounding, and fire performance requirements...
Panelclaw clawFR 10 Degree Installation Guide.pdf - długi link:

https://dpw.lacounty.gov/bsd/lib/fp/Small Residential Roofto... -

Stąd wynika, że "grounding" i "bonding" nie są synonimami.

@vikicz
Sugeruję dopytać autora.

16:46 Mar 7, 2021 

This test requires a 4-wire design that uses two conductors to inject current into the test sample and another two conductors to measure the resultant voltage drop from the current injection point to the current receiving point. The worst case scenario was chosen for the bonding path test by injecting current at one corner of a 150 x 150-foot PV array and receiving the current at the opposite corner of the same array approximately 210 feet away. A simple diagram of the test setup, provided in the TUV report, is shown in Figure 1.
https://www.renewableenergyworld.com/content/dam/rew/migrate...

Figure 1: Test Setup for 150-foot by 150-foot Array. Credit: Unirac.

This bonding test shown in Figure 1 was duplicated with another test using a 6 AWG solid copper equipment grounding conductor. Since the copper conductor would typically be run around the perimeter of the array, rather than through the array, the length of copper used was 315 feet to be consistent with conventional installation methods. The test setup the solid copper wire is shown
https://www.renewableenergyworld.com/storage/bonded-pv-array...

16:44 Mar 7, 2021 

Introduction
360° Test Labs has been retained to test three (3) solar panels mounted to rails for their bonding path resistance in accord with the methods presented in the standard UL 1703 FlatPlate Photovoltaic Modules and Panels part 25.

25 Bonding Path Resistance Test
25.1 The resistance between the grounding terminal or lead and any accessible conductive part shall not
be more than 0.1 ohm when measured in accordance with 25.2.
25.2 A current equal to twice the fuse ampere rating specified in accordance with 47.10 is to be passed
between the grounding terminal or lead and the conductive part. The resistance is to be calculated using
the voltage drop measured between the grounding terminal or lead and a point within 1/2 in (12.7 mm) of
the point of current injection.
25.3 If more than one test is needed to evaluate all the paths of conduction between accessible metal
parts, there is to be a cooling time of at least 15 min between tests.
25.4 The test is to be conducted on three unconditioned samples


http://www.360testlabs.com/pdf/SAMPLE_360TL_Solair-Panel_UL-...

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