"I am looking for technical data, typical vendors, who can or actually have used 15kv, 6000A, 60KA switchgear. I was able to find one at PACS industries, can anyone share me their experience?"
At this voltage I've seen 6000A switchgear, 63kA, arc-resistance to boot made by Powell switchgear. I...
Yannick007, you should try contacting Powell switchgear. I have seen them use IR windows in AR switchgear and MCC. I attended a presentation in which they showed off their bus connection temperature monitoring device as well.