Uninterruptible power supplies (UPS) are often the first line of defense in protecting critical load devices. It continuously absorbs grid current, including surges and spikes, and perfectly regulates clean and stable power output.
Careful planning and significant investments in UPS will be part of your power strategy and even your business continuity plan. If a UPS is working properly, you might even forget it exists. But is it worth it?
Once a UPS is installed and commissioned, it can safely be left unattended until the next alarm. As UPSs become mass-market products and initial product prices drop, some manufacturers charge extra for ongoing maintenance and “servicing.” But what exactly does this “maintenance” include? That’s why, over the years, users have often asked us, “What should I include in my UPS maintenance and repair contract? Is it really necessary?
What is a UPS?
A UPS is an electrical device with complex electronic circuitry built into a metal or plastic housing. Other than the cooling fan, there are no moving mechanical parts that require maintenance, as there are for a diesel backup generator. The term “maintenance” to describe the work done during a UPS visit is probably misused today. When a technician visits a UPS, it is unlikely that “maintenance” is being performed, especially if it is not replacing obsolete components. So why do we need an agreement or contract?
The only mechanically moving part of the UPS is the fan (which can be cleaned and, in some cases, lubricated). The rest of the system is made up of electronic devices that switch a huge amount of current tens of thousands of times per second. All of this is controlled by algorithms written in the firmware and by a DSP (digital signal processor). These complex electronic switches have a finite life span and will eventually wear out and fail if used for too long in the wrong conditions or environment. If they fail, a short circuit occurs in the electrical circuit, causing a loud explosion and smoke, and eventually triggering the fire suppression system. The following is a lengthy investigation by various experts, consultants, engineers, and management involved. Visit: top APC ups prices in Pakistan
Operating conditions of UPS
These devices (essentially compound switches) are only designed to operate for up to 12 years under the environmental conditions and load limits in effect at the time of their design and manufacture.
As a result, much of the time UPS technicians spend on “service” visits under a contract or service agreement is spent on inspections. Essentially, this is to verify that the UPS is operating in the right environment and under the right load and that there is no damage due to external factors. Some of these “checks” can be done daily by the user: the temperature of the UPS room, safe charging of the UPS output, even adventurous use of the built-in battery test function, and the basics of protecting the UPS room from dust, moisture, clutter, and cups of tea! conditions (yes, all too often a UPS can be a useful shelf)! You should also check the condition of your UPS before installing it.
But just as important as these basic routine checks are the checks that should be performed by an experienced UPS technician.
After learning the correct procedures for safely starting and stopping a UPS while maintaining a critical load through the bypass line, a thorough visual inspection of all UPS components should be performed, connections checked and tightened if necessary, signs of corrosion detected, and excess dust removed in harsh environments. DC and AC capacitors, IGBT devices, and batteries should be visually inspected for signs of drift, leakage, or overheating.
If confirmed by visual inspection, the UPS technician can restart the UPS and perform a load measurement; AC voltage and current ripple can be. Measured on the DC side of the UPS (high DC ripple can indicate worn capacitors or an old battery). Measuring the AC output current waveform can detect faulty AC filter capacitors. Analysis of the UPS input power can also reveal network problems. Such as high harmonics, low power factor, or simply high voltage. For short periods of time, the UPS is design to filter out these network problems from critical loads, but continuous operation with input voltages above the rated voltage or a higher harmonic level will result in premature aging of the UPS’s internal components. If external factors cannot be. Excluded, this should be. Clearly stated and appropriate measures recommended.
Although the user can clearly see all current UPS alarms. Only the UPS technician can normally download and analyze the history of conditions the UPS has been. Subjected to as well as a detailed log of its operation since installation (or last service visit). This information is important for predicting the life of components such as capacitors and batteries.
Finally, the firmware: depending on the life of the UPS. It may be necessary to update new firmware to handle the complex electronics. This should only be done by an experienced and trained UPS technician (even if there are problems!). If you have any problems, please contact us. New firmware is essential to avoid unexpected problems that have unfortunately already been reported. By other users of the same product. Updates protect you, so it’s worth insisting on them, especially if they are. Recommended by the manufacturer. Visit here also: APC Data Center Solution in Pakistan
Sophisticated order tracking
Sophisticated order management software allows us to provide you with timely reports on services performed. Our technicians know your system information, know when replacement parts are due. And know of any problems with the UPS’s operating history. This means we are always on-site and can provide you with comprehensive support throughout the life cycle of your system.