Selecting the Right UPS System: Key Considerations for Reliable Power Backup

Modular Series and Low Frequency online UPS (1kVA to 600 kVA)

UPS (Uninterruptible Power Supply) systems play a crucial role in providing clean, consistent, and safe backup power to attached equipment. Whether protecting sensitive computers, industrial machines, or networking equipment from power disruptions, a UPS ensures that operations run smoothly, even in the event of a power outage. UPS systems also address power issues like sags and surges that could damage your equipment.

However, selecting the right UPS system for your facility is not always straightforward, even for seasoned IT professionals and engineers. Below are key factors to consider when choosing the best UPS backup solution:

1. Assessing Your Power Needs

Understanding your power requirements is the first step in choosing the right UPS system. You should measure the voltage, amperage, and wattage of your critical equipment using a power meter. If this is not possible, you can consult the manual for voltage and volt-amp (VA) ratings.

When calculating the power load for your UPS, total the power ratings (in VA) of the devices you want to support. It's a good practice to add a 10-20% buffer to ensure your UPS system can handle unexpected spikes in power demand.

 

2. Choosing the Right UPS Type

UPS systems are categorized into three main topologies based on the level of power protection they provide:


 •   Standby UPS: Ideal for home or small office use, this UPS provides basic power protection and short-term      backup during outages.

 •   Line-Interactive UPS: Suitable for environments with frequent power fluctuations, this system corrects minor  sags and surges while providing backup power.


•   Double-Conversion UPS: Designed for high-end applications like data centers and industrial equipment, this UPS provides the highest level of power protection by converting incoming power into a clean,consistent output.

Your choice of UPS depends on the type of equipment you are protecting and the severity of power issues in your area. The table below offers a basic comparison to help guide your decision.



3. Determining Run Time Requirements

UPS systems are available in both standard and extended backup options. Standard backup typically provides 5-10 minutes of power, which is enough to shut down systems or switch to a generator. Extended backup can last for several hours, which is crucial for facilities without generators.

If your facility has a generator, a standard UPS backup may suffice. However, if your UPS relies solely on its batteries, extended backup may be necessary to ensure operational continuity.

Two common types of batteries used in UPS systems are:

  1. Maintenance-Free VRLA Batteries: Affordable and commonly used for standard backup.
  2. Lithium-Ion Batteries: Offer longer runtimes and higher efficiency, but at a higher cost.

To calculate runtime, use the following formula: multiply the UPS system’s battery capacity (in Ah) by the battery rating (in V) by the battery efficiency (in %). Then, divide that amount by your equipment’s power requirements (in W).

4. Considering System Scalability and Redundancy

If you anticipate scaling up your systems or need redundancy for critical applications, it’s essential to choose a UPS solution that accommodates these requirements. Modular and redundant UPS systems can expand with your needs, providing additional capacity and ensuring continuous power supply even if one unit fails.

5. Accounting for Environmental Conditions

UPS systems should operate in optimal environmental conditions for longevity and performance. Consider the following factors when selecting your UPS:

     Temperature & Heat Dissipation: Ensure the system can function effectively in your facility's temperature range.

        Humidity & Altitude: UPS systems are sensitive to humidity and altitude, which can affect their performance.

     Noise & Available Space: Ensure the system's noise level is acceptable, especially in office environments, and that you have enough space for installation.

        Dust Levels: Excess dust can damage UPS components, so it’s important to keep the environment clean. 

6. Optional Features & Accessories

In addition to the core UPS system, there are optional parts and accessories that can enhance performance or meet specific needs:

      Remote Monitoring: Monitor the status of your UPS remotely for easier maintenance.

       Extended Display: A larger display helps track system performance in real-time.

       Alarm Monitoring: Alerts you to potential issues before they become critical.

    Energy-Saving Features: ECO functions reduce energy consumption during periods of low power usage.

       External Maintenance Bypass: Allows for system maintenance without shutting down the entire UPS.

Final Thoughts

Selecting the right UPS system is critical for maintaining reliable power and protecting sensitive equipment from disruptions. While this guide covers many key aspects of UPS selection, larger systems—especially 3-phase high-rating solutions—require even more detailed considerations.

At Makkays, we offer comprehensive services, including site assessments, solution recommendations, installation, and system upgrades, delivered by a team of expert engineers. Contact us today to design a customized UPS backup solution tailored to your unique requirements.

To schedule a call or visit, please email us at power@makkays.com

www.makkays.com