The archive includes a model of 3 elements plus instructions on how to rotate the lamps correctly.
Lamp SLV 3Ph STRUCTEC DALI 1003026Lamp SLV 3Ph STRUCTEC 1000656Lamp SLV 3Ph STRUCTEC 152820
Vray version 3.20.03Corona version 1.7
Polys: 134298Verts: 148752
Stage organization:
https://www.slv.com
basicdecor.ru
Who works in V-Ray version lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - which is preferable for you
For Corona render, it is recommended to install a version not lower than 1.5, since the glossiness of the materials is adjusted taking into account PBR.