If you didn’t already know, a UPS or uninterruptible power supply is simply a backup battery that provides some emergency power for your electronic devices. In essence, when the initial input power source fails this one kicks in and in no time you’ll be supplied with some power.
Read on as we dive into everything you need to know about the UPS system and the apc ups battery. The main difference between the UPS and your emergency power system or auxiliary or generator is that it successfully provides an instant burst of power that offers near-instantaneous protection from outages.
The Power System
The provided instantaneous power of the system usually comes from an associated electronic circuit and specially designed attached batteries. However, this system was designed for lower power users and even those higher-powered generators and flywheels. For the most part, the uninterrupted source of power is rather short-lived. These devices were made to supply up to 15 minutes of time for smaller unit users.
However, they can easily provide enough time for auxiliary power units to come online as well as allow users enough time for protective equipment to be shut down properly. While UPS devices were not specifically designed for any special group of equipment, they are mostly used to protect data centres, computers, electrical equipment, telecoms and others if ever there should be a major power disruption.
This is essential since it can actively protect persons from fatalities, injuries, and even data loss in some instances. UPS units typically differ in size according to the units that they’re protecting. This just simply means that they can be used to protect smaller 200 VA rated computers as well as entire buildings that rate at least over 300 kVA, more than 1 MVA data centres, or even manufacturing plants.
Different Types Of UPS Design
The following are the main three categories of UPS systems:
Standby/Offline UPS – The load for this system is usually powered by some input power and a backup circuit. However, this only comes into effect when the power fails. While most units are below they are around 1 kVA and are either standby or line-interactive which also means that they are not as costly.
On-Line UPS – These units tend to use double conversion as they accept AC inputs while rectifying the DC. This is done via a rechargeable battery where it is then inverted into 120V/240V. The AC power can be used to actively protect equipment. Dynamic
Uninterruptible Power – These are better suited to large units.
The system consists of a synchronous motor or an alternator that is connected by a choke and its energy is stored within the flywheel. If for some reason the mains fails, the Eddy-current regulator maintains the power.
These are sometimes easily combined with diesel generators to form a state-of-the-art diesel rotary uninterrupted supply of power. In recent years, a specially designed fuel cell UPS was developed. This variant contains a power cell that is a fuel cell and some hydrogen.
The fuel cell UPS provides smaller spaces with greater runtimes. Standby/Offline UPS Design With the Standby variant, only the most common or rather basic features are offered. This also provides better battery and surge protection. When used, persons can easily connect their equipment to the incoming power with transient clamping devices.
This is done in a regularly protected strip that is connected across power lines. When the incoming utility fails or falls below the normal levels, the inverter is turned on via the internal storage battery. It should be noted that the switchover time can be as much as 25 milliseconds depending on the time that the unit takes to detect the loss of voltage.
Based on the connected load, the sensitivity is varied. UPS units are typically designed to cover different ranges such as computers and others. However, this is done without brownout and dips to the device.