Xvls, Xvlt, Xsub, Xfil1 and Xfil2 Front Rigging Structural-Strength Ratings:
The working-load limit of each individual rigging point on the front of an X-Line enclosure is dependent upon the rigging-track/bracket assembly as it is mounted in the enclosure, the Xvsg grid chain rigging strap, the Xvsl linking chain rigging strap, the Xvsd downfill rigging strap and the Xvsf fitting.
The Xvls, Xvlt and Xsub enclosures have identical rigging track at the front of the enclosure and have the same structural-strength ratings when used with the Xvsg, Xvsl, Xvsd and Xvsf, as shown in Figure 14.
It should be noted that the front-to-back angle range shown in Figure 14 is only 270° for the Xvsg, Xvsl, Xvsd and Xvsf because the front chains can only be put into tension and the enclosure prevents a full 360° rotation. It also should be noted that the Xvsg, Xvsl, Xvsd and Xvsf front chains are only rated for use over side-to-side pull angles of a maximum of ±5°, as shown in Figure 14. There are two rigging points at the front of the enclosures. The structural ratings shown in Figure 14 are for a single rigging attachment point. Each rigging point has the same rating.
The Xfil1 and Xfil2 have their front rigging track hardware located on the sides of the enclosure, and have the same structural rating when used with the Xvsg, Xvsl, Xvsd and Xvsf, as shown in Figure 15. It should be noted that the structural ratings for the Xfil1 and Xfil2 enclosures are the same with any angle of pull. There are two rigging points at the front of the enclosures. The structural ratings shown in Figure 15 are for a single rigging attachment point. Each rigging point has the same rating.
Xvls, Xvlt, Xsub, Xfil1 and Xfil2 Overall Enclosure Structural-Strength Ratings:
The actual strength of the Xvls, Xvlt and Xsub enclosures will depend on the complex total of the combined forces from each of the rigging points acting on the enclosure as a whole and will vary with the array configuration. However, for the sake of simplicity, Electro-Voice chooses to define the working-load limit of the overall enclosures as the sum total of the weight of that enclosure plus the weight of all of the enclosures and rigging hardware suspended below. This simplified working-load weight rating of the overall enclosures is defined as being independent of the angles of pull on the individual rigging points. The Electro-Voice engineers have chosen to define the working-load limits of the individual rigging points as a function of pull angle so that they take into account any variations in enclosure strength that might occur as a function of pull angle. This approach allows the enclosure working-load limit to be defined as independent of pull angles, making the complex structural rating analysis easier. The overall enclosure strength ratings are identical for the Xvls, Xvlt and Xsub models, and are shown in Figure 16. The overall enclosure strength ratings are identical for the Xfil1 and Xfil2 models, and are shown in Figure 17.