This is the VA-based counterpart to tsiPhaseAvailablePowerRatioW, expressing the same load-against-every-valid-module's-capacity ratio, redundancy ignored, but in apparent power rather than real power, which matters when this phase feeds equipment with a non-unity power factor. It gives a typically less favorable utilization percentage than the watts-based version whenever the connected load's power factor is below 1.0, since the VA denominator reflects the true current-carrying and thermal constraint rather than just delivered real power. An admin who sees this VA ratio running noticeably higher than tsiPhaseAvailablePowerRatioW for the same phase would know the load on that phase has a meaningfully poor power factor worth investigating or correcting.