ANSWERS
A1
37.5mG
A2
VFI is Voltage & Frequency Independent and VI is a Voltage Independent UPS. VI class UPS systems could save energy assuming that the utility power is of an acceptable quality from a frequency variation point of view..
A3
150kW plus expected losses due to any potentially in-efficiency
A4
If using standard perforated tiles then not to exceed more than 25% tiles should be perforated
A5
8% THDv or less
A6
Tier levels are defined by the Uptime Institute® whereas Rating levels are defined by ANSI/TIA-942. Tier levels only describe power and cooling requirements whereas Rating levels of ANSI/TIA-942 cover power, cooling, architectural and telecommunications.
A7
No, Rated-4 of TIA-942 does not require two different power utility companies. The only requirement is two different substations which can be owned by a single power utility company.
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