Frequently Asked Questions

A UPS (Uninterruptible Power Supply) is a device that provides emergency power to connected equipment when the main power source fails. It also conditions incoming power to protect equipment from surges, sags, and other power disturbances. Any organization that relies on servers, networking equipment, telecommunications infrastructure, or sensitive electronics needs a UPS to prevent data loss, equipment damage, and costly downtime during outages.

Explore Power Solutions’ full range of UPS systems: UPS Systems →

There are three main UPS topologies. Standby (offline) UPS systems provide basic surge protection and battery backup and are suited for home offices and light-duty applications. Line-interactive UPS systems add automatic voltage regulation (AVR) to handle common power fluctuations without drawing on the battery, making them a popular choice for small-to-medium businesses. Online double-conversion UPS systems provide the highest level of protection by continuously converting incoming AC power to DC and back to AC, completely isolating connected equipment from all power disturbances — this topology is the standard for mission-critical data centers and healthcare environments.

Browse UPS systems by manufacturer and topology: View All UPS Systems →

Single-phase UPS systems are designed for lighter loads — typically up to 20 kVA — and are commonly used for individual servers, workstations, networking closets, and small offices. Three-phase UPS systems are designed for larger, more critical installations such as data centers, enterprise server rooms, and manufacturing facilities, and are capable of supporting loads from tens of kilowatts up to several megawatts. The right choice depends on your total power load, the criticality of your equipment, and your facility’s electrical infrastructure.

Not sure which is right for your load? See our UPS Sizing Guide →

To properly size a UPS, you need to calculate the total power load of all connected equipment in watts or volt-amperes (VA), then add a capacity buffer — typically 20–25% — to allow for future growth and to avoid running the UPS at maximum load. You should also consider your required runtime and whether you need redundancy. Power Solutions offers a free UPS sizing consultation and has published a detailed guide on its website to walk you through the process step by step.

Read the full guide: How to Properly Size Your UPS →

Runtime depends on three factors: the capacity of the UPS battery (measured in amp-hours), the power draw of the connected load, and the age and condition of the battery. A lightly loaded UPS may provide 20–30 minutes or more, while a heavily loaded system may only provide 5–10 minutes. Extended runtime can be achieved by adding external battery cabinets. For most data center applications, the goal of UPS runtime is simply to bridge the gap until a generator starts — typically 5–15 minutes.

Power Solutions can model runtime scenarios for your specific load — call 800-876-9373 or request a consultation →

Most UPS batteries have a design life of 3–5 years, though actual life varies depending on temperature, cycle frequency, and maintenance practices. Heat is the single biggest factor — every 10°C above the rated ambient temperature can cut battery life in half. As a best practice, Power Solutions recommends proactive battery replacement every 3–4 years for mission-critical systems, regardless of apparent battery health. Annual battery testing and inspection can help identify early degradation and prevent unexpected failures.

Learn about Power Solutions’ battery replacement, testing, and maintenance services: Battery Replacement Services →

A UPS provides instantaneous battery backup that kicks in the moment utility power fails, protecting equipment from even brief interruptions. However, battery runtime is limited — usually minutes, not hours. A generator provides long-duration backup power but takes time to start and stabilize — typically 10–30 seconds. These two technologies are designed to work together: the UPS bridges the gap while the generator comes online. For facilities with critical uptime requirements, both a UPS and a standby generator are necessary components of a complete power continuity strategy.

Explore Power Solutions’ standby generator options: Standby Generators →

Redundancy levels define how much backup capacity a critical power system has in the event of a component failure. N means the system has exactly the capacity needed to support the load with no backup — any single failure could cause an outage. N+1 means there is one additional component beyond what is required, so a single component can fail without affecting the load. 2N means the entire system is fully duplicated, providing the highest level of fault tolerance. The appropriate redundancy level depends on the facility’s uptime requirements, budget, and the criticality of the operations it supports.

Power Solutions engineers can help determine the right redundancy architecture for your application — call 800-876-9373 or request a consultation →

Critical power engineering is the discipline of designing, specifying, and configuring electrical power and cooling infrastructure for facilities where downtime is not acceptable — such as data centers, hospitals, financial institutions, telecommunications sites, and industrial facilities. It encompasses everything from UPS systems and standby generators to power distribution, switchgear, and precision cooling. Getting critical power engineering right from the outset prevents costly redesigns, ensures equipment compatibility, and delivers the redundancy and resilience that mission-critical applications require.

Learn how Power Solutions supports engineering for critical power and cooling: Engineering Services →

Vendor-neutral engineering means that the engineer or solutions provider is not tied to any single manufacturer and can objectively evaluate and recommend products from across the industry based purely on what best meets the project’s technical and budgetary requirements. Power Solutions is purposely structured as a vendor-agnostic resource — meaning its engineering recommendations are driven by project specifications and client goals, not by manufacturer relationships or sales quotas. This approach is particularly valuable for complex projects that require combining products from multiple manufacturers into a cohesive, optimized system.

Learn more about Power Solutions’ vendor-neutral approach: Engineering for Critical Power →

Yes. Power Solutions is a vendor-agnostic service provider with the capability to service UPS equipment from all major manufacturers, including APC/Schneider Electric, Eaton, Vertiv/Liebert, Toshiba, and many others. This manufacturer-independent approach means you get objective recommendations and a single point of contact regardless of the brands in your environment.

See all UPS and data center service options: UPS & Data Center Services →

Power Solutions provides UPS systems and services across a broad range of industries including financial services, healthcare, higher education, K-12 schools, telecommunications, manufacturing, and government. Each industry has unique power protection requirements — healthcare facilities, for example, must meet strict uptime and compliance standards, while telecommunications applications often rely on DC power systems rather than traditional AC UPS. Our team has deep experience tailoring power solutions to industry-specific requirements.

Explore industry-specific power solutions: Industry Solutions →

Common warning signs that a power infrastructure upgrade may be needed include: UPS systems that are more than 10 years old; batteries approaching or past their recommended replacement interval; load levels consistently above 70–80% of UPS capacity; frequent alarms or fault events; inability to support N+1 or 2N redundancy requirements; cooling systems that can no longer maintain target temperatures; and electrical distribution equipment that no longer meets current code or safety standards.

Schedule a Data Center Assessment: UPS Data Center Assessment Services →

Critical power infrastructure is a system of interdependent components — UPS, generator, transfer switches, distribution, batteries, and cooling all interact with each other. A holistic design approach ensures that each component is properly sized and compatible with the others, that the system performs as intended under both normal and abnormal conditions, and that there are no gaps in protection or capacity. Working with a vendor-specific resource risks an incomplete solution because that manufacturer’s product line may not cover every component needed. Power Solutions’ broad product knowledge across the entire critical power stack enables it to deliver fully integrated, end-to-end solutions.

Engineering for Critical Power: Engineering for Critical Power and Cooling →

The best source for unbiased UPS advice is a vendor-agnostic solutions provider — one that represents multiple manufacturers and has the engineering expertise to match the right technology to your specific application, rather than steering you toward a single brand.

Power Solutions, LLC has been doing exactly that for more than 30 years. As a national value-added reseller for more than 20 manufacturers — including Eaton, APC by Schneider Electric, Vertiv/Liebert, Toshiba, Tripp Lite, CyberPower, and many others — we have no financial incentive to recommend one brand over another. Our only goal is to recommend the solution that best fits your load requirements, environment, budget, and long-term service needs.

The right UPS for your facility depends on a number of factors: your critical load in kVA or kW, required runtime, topology (standby, line-interactive, or double-conversion), installation environment (indoor, outdoor, harsh conditions), battery chemistry preferences, and whether monitoring and management capabilities are needed. We also serve specialized applications across healthcare, financial services, education, industrial, telecommunications, and substation environments — each with its own set of requirements and compliance considerations.

Rather than relying on a single manufacturer’s sales team or a generic online comparison tool, working with a solutions provider like Power Solutions gives you access to a full market view, engineering support, and the ability to compare options across competing platforms with a single point of contact. We can size your system, configure a turnkey solution, handle installation, and support ongoing maintenance — all under one relationship.

If you’re not sure where to start, a facility power assessment is often the right first step. Contact Power Solutions at 1-800-876-9373 or visit power-solutions.com to speak with one of our power specialists.