The Complete Guide to Uninterruptible Power Supply (UPS)

The Complete Guide of Uninterruptible Power Supply (UPS)

The Complete Guide of Uninterruptible Power Supply (UPS)


UPS is an uninterruptible control supply in Singapore designed to be used as an auxiliary control source to successfully and instantly switch battery boosters for computers and other memory-based devices as needed. Personal computers, also known as PCs, are packed with important but damaged computer components that are often unable to cope with damage caused by sudden loss of control. The quality plan of the uninterrupted control supply system is used to protect them and protect information in the event of power outages, network surges, and any disappointment or atypical control situations. In this article, we’ll be sharing information about UPS right from the horses’ mouth – a professional and competent uninterruptible power supply company in Singapore – Comnet Systems!


uninterruptible power supplies model

As additional peripherals in the configuration of home and work PCs, servers and arrays, and other computer hardware applications, UPS units are becoming increasingly popular. In this case, the uninterruptible power supplies provide computer customers with additional peace of mind and an additional level of information and equipment security.

In this UPS battery system guide, we will examine exactly the functions of UPS and how they can help protect expensive and sophisticated high-end computer components from the potentially damaging effects of sudden main power failures, power surges, and other causes. Shut down unexpectedly. We will also explore more different types of UPS power supplies on the market today to help you decide which types to focus on when purchasing UPS.

A quick side note on naming conventions: In the technical hardware context, the acronym UPS stands for Uninterruptible Power Supply. Technically speaking, the “UPS power supply” is a convenient example of the RAS syndrome and a PIN code and an LCD screen. However, it is still a very common term among customers and suppliers, and the purpose of this guide is that we will use both stand-alone acronyms and the longer version of the interchangeable.


VRLA or lead-acid batteries often require fairly low maintenance and are generally considered to be the basic and reliable workhorse of Uninterruptible Power Supplies, with a typical service life of 5 years. The “VR” in VRLA stands for valve control, which means that some VRLA batteries have a built-in ventilation system that can operate automatically to control the release of gas that accumulates at certain points in the battery charge and discharge cycle. This important function is triggered by an internal pressure sensor. Like most aspects of the VRLA type, it works best when the battery is kept in a dry, temperature-controlled environment, such as a common central heating room in a home or office

In contrast, UPS Li-ion batteries are generally more compact and lightweight, and can have a number of built-in power management features, such as early charging and voltage balancing to get started. Many brands also provide a longer life than lead-acid batteries. In general, which means that in sufficient time, they can eventually provide similar inexpensive options. However, in the initial stage, UPS devices equipped with lithium batteries tended to be more expensive, reflecting a significant increase in production costs. For VRLA-based devices, the initial purchase is usually cheaper.

There is a third option for UPS batteries, namely “wet or flooded batteries” or VLA types. These are much less useful as options that can be bought on the street or in standard UPS systems because they are suitable for very specific applications and environments. On the one hand, their chemical makeup means that they are dangerous unless kept in a completely separate battery storage safe, and they also require regular maintenance by the user to supplement the level of distilled water and continuously monitor their balance and calibration data. This will make VLA batteries completely impractical for most home users or even most office environments. Wet batteries can provide obvious benefits in certain specific use cases, such as large server centers. In these use cases, excellent long-term reliability and stability is the key requirement or fact superior to convenience.

In addition to the battery and the case itself, the UPS power supply often includes a number of other useful functions, which are highly dependent on the device model. The elements that are included:

  • Advanced on board performance monitoring software
  • Management card slots and other data reading functionality
  • Deep discharge, power surge, low voltage and/or  temperature protection
  • LCD or OLED display screens and readout panels
  • Graphical calibration interfaces
  • A broad range of connectivity and external hard Input/output expander options
  • Variable numbers of power sockets and outlets
  • ‘Hot swappable’ battery replacement and/or live UPS maintenance options
  • Various IP ratings


uninterruptible power supply company in Singapore model

As noted in the introduction to this guide, the primary function of the UPS is, first and foremost, to provide a constant and temporary power source for computer setup or other important hardware fixes – in this case, a power outage or similar power outage. Most importantly, UPS is not intended to provide long-term backup use for connected equipment when there is no power supply. The UPS device is not designed to provide a battery-powered solution to continue working “off the grid” or surfing the Internet.

In the case of a sudden disconnection of the normal power supply, the goal of the UPS unit is to provide a limited time window in which the user can still perform a controlled shutdown of the related equipment. The response grid is no longer available. We will study exactly how it works in a later part. An extremely simplified version is that the UPS’s power source collects and stores some energy drawn from the wall socket and stores it in its built-in battery, and then sends the rest of the energy to the computer normally.

When the current from the main plug suddenly stops due to any reason, usually in the case of a power failure, it is also due to accidental disconnection of the cable. The UPS can immediately switch to sending backup power stored in its internal battery.



The point of all this is that if for some reason the main power circuit is suddenly disconnected, the UPS can protect vulnerable and expensive hardware components from damage to memory and physical infrastructure. Arguably most importantly, installing a UPS device also means that important data will not be lost or damaged due to a total power outage during transmission.

For most daily PC activities, the risk of permanent data loss or errors in the event of an unexpected process interruption is actually quite high, so there is usually an approved shutdown procedure for almost all types of activities. data transmission. It’s as easy as removing a USB memory stick from a laptop, you must click eject to safely remove it.

Conversely, if you simply remove the peripheral device from its slot at the moment when the last photo or document appears to have been successfully transferred, the PC may not have finished writing all the data required to make it fully readable by both parties. In the future. In the worst case, this may cause the device to be unable to read the file at both ends of the transfer process. Data damaged or damaged in this way can sometimes still be rescued by specialized recovery technicians, unless they cannot repair or restore it, otherwise it will be lost forever.

This is one of the key reasons to always keep a backup of your important files. It only applies to your data, which is generally saved in a format designed to move as you wish. Rather, each time the computer is turned on and running, a more thorough background transfer process will continue to occur at the hardware and operating system levels. Many of these are the absolute key to the operational capabilities of the machine. In the event of a sudden power failure, it is the disruption of these core processes. Even a simple desktop computer can cause irreversible damage. This is the purpose of the UPS power.


As we mentioned earlier in this guide, there are many different types of UPS systems on the market today. No matter which model or brand you ultimately choose, you will find that it provides a wide range of different features and settings, from numerous connection interfaces to built-in displays, software management packages, and more.

However, these additional features should not be confused with the important issue of choosing the correct UPS core type. Fortunately, the choice basically boils down to a few key variants. In this section, we will discuss each major type one by one and try to determine the UPS power supply that best suits your hardware configuration and operating requirements.


An online UPS system can be considered the best choice for most usage scenarios-it is usually the most expensive type of UPS power supply, providing the best security against unexpected power fluctuations or sudden power failures. As you might expect, the term “online UPS” has nothing to do with Internet connections. On the contrary, it is a fully online UPS power supply, known as a “true UPS”, which means that it can continuously filter, store, and deliver current to your PC even when all conditions are normal.

In short, online UPS is always performing its designed tasks, rather than performing operations only when necessary, which of course means that in the event of a sudden power failure, as far as the computer is concerned, there is a real zero interruption worry, cleanliness, stable power supply continues, as if nothing happened. Although from a hardware or data point of view, this provides the most seamless and secure option to date for the protection of computers and their components, it also means that the power consumption and operating costs of this type of unit UPS are very high. Not to mention the significantly higher cost of the technology itself.

This can be of considerable value in certain key functions and environments where any performance or data loss will be catastrophic, but for most home users this can be considered excessive. In other words, while online UPS systems used to be extremely expensive investments for high-end business networks only, in recent years they have become more important for enthusiastic home users who want the most comprehensive protection for their systems and files.


Compared to the version described above, the offline or backup UPS is exactly what you imagine from the name. It is not constantly cycling, storing and converting power to a computer or server, but is “idle” until absolutely necessary. In fact, whenever the backup UPS detects that the current in the wall outlet is normal, it will effectively bypass itself. By the time the issue is detected, for most premium models and brands, typically within 5 milliseconds, the offline UPS power will switch to its internal backup battery.

Although these 5 milliseconds are typically within the tolerance of most consumer and home electronics products, it still counts as a very minor “outage”. This is the reason why professional users do not technically consider offline models as “real” UPS devices. However, for most home desktop PC users, they are often full-featured alternatives and are only considered unsuitable for very critical applications, where any risk of data or hardware loss is unacceptable.


Based on the above definitions, you will find that hybrid UPS systems generally include so-called “online interactive” UPS units, which provide some kind of compromise and an effective balance between cost and performance, which is not surprising. The online UPS supplies power continuously through its battery cycle, while the backup UPS system only switches to battery power when a problem is detected, while the hybrid or line-interactive UPS power supply provides various operating modes. These typically include double conversion mode, economy mode and active filter mode; the hybrid UPS can detect the most suitable mode at any time. This method is achieved through a variable power transformer system, which means that the total power consumption during any typical extended use period is much less than the full online equivalent.

In addition, the interactive UPS is more effective than the offline version in monitoring, managing and adjusting changes in traffic in the event of “power outages” that are more common than complete power outages. Hybrid mode will not have to constantly switch between full or battery power, which means that the long-term health of the battery is greatly increased and further reinforces the overall value proposition of the online interactive UPS.


Find the right model, brand, and the size or capacity of  the UPS for your needs. There are a few key factors to take into consideration. Regardless of whether you have opted for an online, staby or the hybrid type UPS power supply. These are the main points:

  1. The type of circuit protection you need
    • Blackout protection
    • Brownout protection
    • Surge protection
    • Over-voltage protection
    • Under-voltage protection
    • Deep discharge protection
    • Harmonic distortion protection
    • Frequency variation protection
  2. The amount of UPS power needed
    • How many devices are you going to use?
    • What is the combined total power draw?
  3. How long you need to be able to run those devices for the event of a black out
    • Runtime of a UPS will depend on the size of its battery
    • How many devices that the battery is being asked to support
    • You need to find the bare minimum amount of time you would need to access your computers (finish or stop and save any active processes and shut down it properly)

When purchasing a UPS system, other factors to consider are generally not as important as the factors listed above, but can still affect your purchasing decision. Include the appearance of the device, the overall physical size and shape, and where your home or office would be located for optimal access and security.