[ CATEGORY DIRECTORY // 6 PRIMARY FILES // 190 PART RECORDS ]

Power protection

Choose one primary directory for each family. UPS models are grouped beneath the shared 62-record UPS directory; topology pages remain available at their established URLs.

SUBCATEGORY DIRECTORY // 62 PART RECORDSUninterruptible power supplies

Choose a static list grouped by standby, line-interactive, or online topology.

OPEN UPS DIRECTORY →SUBCATEGORY FILE // 38 PART RECORDSSurge protection devices

Surge suppressors do not provide outage runtime. Protection claims depend on installation, grounding, indicators, and the exact model.

OPEN SUBCATEGORY →SUBCATEGORY FILE // 16 PART RECORDSLine conditioners

Line conditioners, rackmount AVRs and rack power conditioners, cataloged separately from UPS and standalone surge devices.

OPEN SUBCATEGORY →SUBCATEGORY FILE // 15 PART RECORDSMetered power monitors

Plug-in monitors, circuit sensors, DIN-rail meters, panel instruments and portable power loggers; verify exact sensor, phase and interface.

OPEN SUBCATEGORY →SUBCATEGORY FILE // 22 PART RECORDSNetworked / switched PDUs

Network-managed rack PDUs for outlet switching and distribution; confirm source circuit, voltage and connector configuration.

OPEN SUBCATEGORY →SUBCATEGORY FILE // 27 PART RECORDSAutomatic transfer switches

Redundant-source transfer units provide no stored runtime; load continuity depends on compatible sources and device hold-up.

OPEN SUBCATEGORY →

[ COMPONENT RECORD // POWER CONTINUITY ]

Power
protection.

Surge protectors and uninterruptible power supplies help address electrical events and brief outages. Protection claims depend on device design, installation, grounding, battery condition, load, and the local electrical system.

Original schematic illustration of a UPS and protected computer — SCHEMATIC // LOAD & BACKUP PATH

CLASS RECORD: UPS, surge protective devices, and backup batteries. These devices do not replace correct building wiring, grounding, or qualified electrical work.

Reference specifications

UPS topologies	Standby/offline, line-interactive, and online/double-conversion designs differ in transfer behavior, regulation, efficiency, and output waveform.
Capacity	VA and watt ratings are distinct; runtime depends on load, battery age, temperature, discharge curve, and device condition.
Battery	Common designs use sealed lead-acid or lithium-ion batteries. Chemistry, voltage, pack configuration, replacement procedure, and service interval are model-specific.
Monitoring	USB/network signaling, shutdown software, replace-battery indicators, transfer logs, and self-tests vary by model and host OS.

Deployment & upkeep

Size for actual watts and required runtime, not VA alone. Include monitor/network equipment if they must remain online.
Replace batteries only with manufacturer-approved type and follow disposal and electrical safety directions.
Test runtime and shutdown behavior regularly; a lit status indicator does not prove a healthy battery or adequate runtime.
Do not connect laser printers, heaters, or other high-draw loads to battery-backed outlets unless the UPS maker explicitly permits it.
Surge protectors wear; check status indicators, age, joule/test certifications, and replacement recommendations. Never daisy-chain power strips.

Sources & further reading

Eaton — UPS technology and sizingManufacturer overview of UPS types and product selection. Original page is gone; this is the Internet Archive’s copy.
Schneider Electric/APC — UPS support and runtime toolsManufacturer calculators and model-specific maintenance documentation.
NFPA — National Electrical Code informationElectrical installation is governed by applicable codes; use qualified professionals where required.