Busbar
A solid metal conductor distributing high current within a rack or system, replacing bulky cabling.
Current numbers
~3,000-3,300 lb (1.36-1.5 t)loaded NVL72-class rack wet — one 48U cabinet (frame ~185 kg + 18 compute trays + 9 NVLink-switch trays + 8 power shelves + copper backplane/busbar + manifolds + in-rack coolant)
<2 msORV3 BBU ramp to full power on 48.5 V busbar droop; busbar held ≥46 V; PSU ≥97.5% (30–100% load)
5,184in-rack copper NVLink cables in an NVL72 — the copper-mass reality that drives the busbar-cooling fork