The engineer’s reference desk
265–288 / 1,044 sources
Uptime Institute Intelligence 2022
Add EMP and geomagnetic disturbance (GMD) to the risk register as an optional site hazard.
Enerji Piyasası Düzenleme Kurumu (EPDK) 2022
If the site has on-site BESS or generation exporting to the grid, add a DSO SCADA interface item to the electrical scope.
T.C. Enerji ve Tabii Kaynaklar Bakanlığı 1984
In cable sizing (TR profile), add the Turkish voltage-drop limits: 1.5% lighting and socket, 3% motor from building entry, and 5% from transformer to building entry.
T.C. Enerji ve Tabii Kaynaklar Bakanlığı 2000
In the MV module (TR profile), select transformer primary protection automatically: fused load-break switch up to 400 kVA, fused load-break switch or relay-operated breaker up to 1,600 kVA, relay-operated breaker above.
Enerji Piyasası Düzenleme Kurumu (EPDK) 2014
Grid-connection wizard (TR profile): ask for contracted power and voltage level, route requests above 36 kV to TEIAS and lower ones to the regional distribution company.
Enerji Piyasası Düzenleme Kurumu (EPDK) 2021
Treat a grid-interactive data-centre battery as storage integrated with a consumption facility: same metering point and a distribution company connection opinion are required.
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Enerji Piyasası Düzenleme Kurumu (EPDK) 2019
In the generator module, tag standby diesel sets as 'imdat grubu': no generation licence, no export.
Enerji Piyasası Düzenleme Kurumu (EPDK) 2014
In power-quality checks, assess harmonic current emission of UPS and IT loads against Annex 8 limits at the point of common coupling, and size active filters if needed.
T.C. Enerji ve Tabii Kaynaklar Bakanlığı 2014
In export and QA, tag every rule and calculation with the standard used so the TR project-approval package can show the TS/EN/IEC/IEEE hierarchy.
T.C. Enerji ve Tabii Kaynaklar Bakanlığı 2001
In the earthing module (TR profile), enforce the 16 mm2 copper minimum for earthing conductors.
Bilgi Teknolojileri ve İletişim Kurumu (BTK) 2014
In the telecom client profile, enforce 2-year access-log retention, underground or protected utility entries and support-system redundancy checks.
U.S. Environmental Protection Agency (ENERGY STAR) 2026
Add a 'server room / embedded (<50 kW IT)' project template with prompts for sub-metering and a consolidation-vs-retrofit comparison.
Open Compute Project Foundation 2025
Give catalogue items (UPS, generators, switchgear, cable, CDUs, racks, concrete) an embodied-carbon block: A1-A3 kg CO2e, functional unit, method (EPD/LCA/TM65/EEIO), verification status and emission factor source, matching this disclosure template.
Environmental Research: Energy (IOP Publishing) 2025
Calculate AI training cluster energy and power demand from measured node power (here 7.3-7.79 kW in training, 76% of TDP) rather than TDP; a TDP-based estimate inflated a 20,000-GPU cluster by 19 GWh.
arXiv (preprint, submitted to IEEE) 2026
Store operating-mode behaviour in the UPS catalogue and electrical model: eco-mode availability, transfer thresholds and timers (for example 0.7 p.u./20 ms to battery), and a post-event rectifier ramp time.
International Energy Agency 2025
Use the IEA component split (servers about 60%, storage about 5%, network up to 5%, cooling 7-30%) to sanity-check modelled energy breakdowns.
International Energy Agency 2026
In a site module for Korea and Japan, flag grid-congested metro regions and suggest renewable-rich regions.
Sustainability (MDPI AG) 2023
Show evaporative free-cooling feasibility with a potential-hours study that bins the city's hourly wet-bulb distribution against mode thresholds (13 and 15 °C); in a humid climate direct evaporative mode ran only 262 h a year.
European Commission JRC 2024
In grid connection and permitting discussions account for regional concentration (data centres are 18% of national electricity in Ireland); in dense markets grid capacity and permitting can be a critical risk.
Siemens 2020
Check busway Icw/Ipk against the prospective fault level at the feeding board.
Scientific Reports (Springer Science and Business Media LLC) 2025
Set up the retrofit workflow as KPI-guided: with a validated CFD model compute RCI, RHI, RTI and the recirculation index, then test rack repositioning, separators, sealing unused bays and removing badly placed ventilation units in sequence.
Energies (MDPI AG) 2025
In PUE comparisons state the facility type (edge, SMB, enterprise, colocation, hyperscale) and assign IT/facility power categories per The Green Grid definitions in detail; PUE across types is not directly comparable.
U.S. DOE Federal Energy Management Program / Lawrence Berkeley National Laboratory 2013
Use the package cost/kW and payback ranges as defaults in the retrofit measure library (air management, generator block heater controls, chilled-water plant).
Applied Sciences (MDPI AG) 2025
When connecting waste heat to DH, fix the DH generation early: for 5G and 4G direct heat-exchanger connection suffices (PUE below 1.6, ERF above 0.85), while 3G needs a high-temperature heat pump (PUE about 2.1, payback about 14 years).
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