The engineer’s reference desk
25–48 / 1,044 sources
FacilitiesNet / Building Operating Management 2020
Include start-signal logic, neutral timing and in-phase monitor settings in generator/ATS catalogue entries.
Upsite Technologies blog 2014
Compute CCF for each room from running cooling capacity and IT load and show it as a KPI, with a warning when it is high (oversupply).
FacilitiesNet / Building Operating Management 2020
Size UPS autonomy with an end-of-life derating (for example 8 min new, 5-6 min aged) and show both values.
ABB 2013
Add an 'arcResistant' field to the switchgear catalog with classification (for example IEC 62271-200 IAC / IEC TR 61641 / IEEE C37.20.7).
U.S. Environmental Protection Agency (ENERGY STAR) 2026
Use as quick-win recommendations in the operations module for small facilities.
Türkiye Büyük Millet Meclisi 2007
In the operations/energy module, compute annual energy in TEP (toe) from the energy model.
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Türkiye Büyük Millet Meclisi 2013
In a regulatory checklist, classify each on-site source (diesel standby, PV, BESS) against the Article 14 exemptions.
Türkiye Büyük Millet Meclisi 2016
Product/deployment: offer TR-region or on-prem hosting so Turkish customers avoid Article 9 transfers.
Türkiye Büyük Millet Meclisi 2025
When the client is public-sector or critical infrastructure, flag that security systems (access control, CCTV, network security appliances) must come from authorised suppliers.
NVIDIA 2025
Add a single-ended 800 VDC distribution option to the electrical model, with rectifier blocks of ~1.5 MVA (LV) and up to 7.5 MVA (MV/SST) and the stated efficiencies.
NVIDIA 2026
Define four electrical templates for AI halls: AC baseline (480 VAC, 100 A whips, 4M3), Power Rack, 2 MW Power Center and 4.8 MW DC Power Block with 4+1 catcher.
arXiv preprint (National University of Singapore) 2025
For an operations or digital-twin module, use the feature list as a practical minimum sensor set for PUE prediction: outdoor dry/wet-bulb, IT power, UPS power, CRAC power/capacity/SCOP, coil temperatures and airflow.
iMasons Climate Accord (Infrastructure Masons) 2026
Add fuel type (diesel, HVO/EN 15940, RD99, biodiesel blend, natural gas) to generator catalogue entries with an OEM-approval flag.
ASHRAE (ASHRAE Transactions Vol. 131 Pt. 2) 2025
Chilled-water CRAH/fan-wall catalogue items should store rated capacity with its rating conditions (EWT, return air temperature, airflow, water flow).
Energies (MDPI AG) 2020
In high-density HAC halls, prefer a raised floor to hard-floor supply; on a hard floor high-velocity jets can starve the racks nearest the CRAHs and draw hot air back into them.
arXiv preprint (Texas Tech University / PNNL; submitted to Renewable and Sustainable Energy Reviews) 2026
Base interconnection studies on staged, updatable facility data rather than a single static MW value; requested peak MW and annual energy alone do not establish integration.
Proceedings of the Twelfth ACM International Conference on Future Energy Systems (ACM) 2021
For geographic load shifting, consider locational marginal carbon emissions (lambda-CO2) as the signal instead of LMP or regional average carbon intensity; it gave the largest reduction (-1.44%).
Frontiers in Sustainability (Frontiers Media SA) 2023
In data-centre siting, look beyond PUE to energy source (EnergyIn) and heat reuse (EnergyReuse), which PUE ignores.
IEEE Access (Institute of Electrical and Electronics Engineers (IEEE)) 2021
Set the number of spare PSUs/servers in a rack with a LOWP-style calculation from target service reliability and the load duration curve, avoiding unnecessary overprovisioning.
ACM/SPEC 2014
In the metering design module, offer Level 1/2/3 templates that place meters (for example upstream of PSUs/PDUs) and set the required coverage and sampling.
Schneider Electric 2015
Build the power-chain calculator as UPS(load) x wiring(load) x PSU(load), defaulting wiring to 1% loss at full load scaling with load squared.
Schneider Electric 2023
Add a lifecycle/opex calculator per UPS fleet: site count, UPS VA, battery chemistry, install-year distribution, warranty, truck-roll cost, staff allocation and downtime $/min.
IEEE Access (Institute of Electrical and Electronics Engineers (IEEE)) 2021
Define the failure state (loss of PDU power, loss of a rack, loss of service) explicitly before starting a reliability study and state it in the report.
Energies (MDPI AG) 2023
In UPS designs that only need bridging until the generator starts, evaluate a flywheel as a battery alternative, checking that a 15 s-15 min discharge range and a generator start under 10 s are adequate for the duty.
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