Topic guide
Browse technical references on uninterruptible power supplies, batteries and redundant power arrangements. Explore capacity, efficiency, runtime and maintenance considerations alongside each publication’s assumptions and scope.
97–120 / 175
World Electric Vehicle Journal (MDPI AG) 2023
Plan UPS battery replacement from the RUL of the weakest cell rather than the string average; in a series string one cell sets the replacement date for the whole string even when others have years of life left.
IEEE Access (Institute of Electrical and Electronics Engineers (IEEE)) 2026
Define 800 VDC unipolar, ±400 VDC bipolar and 48/54 VDC busbar as separate voltage classes in the single-line diagram, each with its own conductor ampacity, breaker pole count and clearance (IEC 60664-1) checks.
arXiv (preprint) 2026
Offer an SST/800 VDC front end as an alternative architecture template next to transformer + UPS, with its efficiency curve as a catalogue field.
Fire (MDPI AG) 2023
When assessing non-gas, non-water suppression options, note liquid nitrogen only as a preliminary-stage option, and ask for full-scale testing and an occupant-safety analysis for oxygen depletion before taking design values.
Socomec 2024
In preliminary sustainability calculations, estimate UPS manufacturing (A1-A3) carbon with the proxy value of 21.9 kg CO2e per rated kW and label it clearly as a proxy.
Schneider Electric 2019
Provide an edge/micro data centre template: single-rack bundle of rack, UPS, rack PDU, cooling (passive default), sensors and cameras.
Sustainability (MDPI AG) 2021
Calculate UPS load ratio (80% for 800 kW in a modular arrangement, 53% in parallel-redundant) and losses at design stage; consider specifying UPS efficiency at 30% load and compare a SiC-based power stage (above 98%).
IEEE Open Journal of Industry Applications (Institute of Electrical and Electronics Engineers (IEEE)) 2025
In arc flash estimation for high-voltage battery rooms, do not use the maximum-power method alone with an enclosure multiplier; cross-check unrealistic results with measurement-based models such as Ammerman's.
Electronics (MDPI AG) 2022
In inter-cell thermal barrier design for battery modules, base the design on the thermal contribution of the runaway neighbour (70-90%); neighbour-to-neighbour heat, not an external source, drives propagation.
Sustainability (MDPI AG) 2026
Do not size behind-the-meter battery storage on an emission-reduction case; round-trip losses mean storage alone adds nothing and can raise emissions. Justify it with a concrete duty such as masking checkpoint dips.
Vertiv 2023
For edge and closet designs, default the single-phase UPS battery to Li-ion where room temperature is uncontrolled, and show replacement cycles in lifecycle cost (VRLA 3-5 y, Li-ion 8-10 y).
ABB 2014
Give the UPS catalog an architecture field {monolithic, CPA modular, DPA modular}, module kW, modules per frame, maximum frames in parallel and per-module static bypass (yes/no).
Schneider Electric 2011
Give each UPS a mainsConfig (single mains, dual mains, no bypass), an inverter-transformer flag and a per-input earthing system (TN-S, TN-C, TT, IT).
Schneider Electric 2011
Encode the seven IEEE 1159 categories as a list used in risk registers and mitigation pickers.
Energies (MDPI AG) 2017
For paralleled modules in a modular UPS, do not look only at the N+1 redundancy count; add to the design check that module-to-module filter and control parameter differences cause circulating current and thermal imbalance.
Siemens 2018
Offer W/m2 defaults by building type (data centre vs IT room) and redundancy-dependent simultaneity factors in early sizing.
Siemens 2012
Add "isolated-parallel rotary UPS" (N UPS + IP bus + chokes) as a UPS topology template.
Scientific Reports (Springer Science and Business Media LLC) 2017
Add HF toxicity to risk assessments for enclosed battery rooms and BESS: take 20-200 mg/Wh of stored energy and compare the resulting room concentration with the IDLH (0.025 g/m³) and 10-minute AEGL-3 values.
Vertiv 2026
Give the rack/pod model a liquid fraction (default about 70% for direct-to-chip) so residual air load is computed automatically.
IEC 2022
In the UPS catalogue, record safety certification (IEC/EN 62040-1), installation location class (restricted access or ordinary-person area) and battery type.
IEC 2016
Store the EMC category (C1/C2/C3) in the UPS catalog.
IEC 2021
In the UPS catalogue, store the IEC 62040-3 classification (for example VFI-SS-111).
IEC 2013
In the sustainability catalogue, allow UPS environmental declaration fields (materials, end of life, use-phase losses).
IEC 2016
In the power topology, support DC-output UPS and rectifier plants as a source type for DC distribution designs.
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