From entry-level desktop and wall-mounted units to 80kVA n+1 units for large data centers, batteries are the heart of any Uninterruptible Power Supply (UPS) system. If more is needed, run times can be extended by adding battery packs or battery expansion units.
When installing a given UPS battery, the following points should be considered to ensure that the battery can provide its rated run time when needed: proper operation (following the UPS manufacturer’s instructions), proper operating environment (including ambient temperature), regular battery maintenance and timely battery replacement.
Ideally, the UPS battery should be designed to provide sufficient run time at constant load to maintain the load, start the backup generator (automatically and, if necessary, manually), and complete the automatic server shutdown process.
Battery operation and orderly system shutdown. Regardless of the nominal battery life, there must be sufficient time for an orderly shutdown of the protection system using appropriate software.
To ensure the required battery life, the size of the battery is determined by the size of the load (in kW) and the required bridging time in case of the main failure. Most UPS are set for a maximum battery life of 10 minutes. This is long enough to cover the most common power outages and to safely shut down non-critical loads.
Determine the required battery runtime
The required battery life of the UPS, or even the use of additional batteries, depends on the site’s previous power supply and existing UPS equipment, the presence or absence of backup generators at the site, the time required for load interruption, and orderly system shutdown, environmental aspects (space, temperature, humidity), and comparison with backup generators or fuel cells. Determined by factors such as the total cost of the battery life. Also visit: Dry Batteries Prices in Pakistan
The battery performance of a given UPS can be maximized by proper operation, maintenance, and replacement of the battery. From the smallest UPS (typically used to protect the power supply of small and medium-sized file servers, PBX systems, POS systems, and desktop systems) to the largest industrial power supplies, the battery life of a UPS can be extended simply by adding additional batteries.
Extend runtime with a battery extender unit
the simplest plug-in battery extender unit for UPS systems can extend internal battery runtime by up to an hour or more. In large uninterruptible power systems, UPS systems are. Designed for continuous operation and can handle large loads with up to several hours of extended operation. This is typically accomplished by using a battery extension unit that is. Connected in series with the connectors on the back of the UPS (and/or generator). This configuration is also called “daisy-chaining”.
A nice design adapted to the UPS: UPS up to 30kVA have the possibility to have an internal battery. If this is not the case or if additional protection time of the UPS is. Required an external battery extension cabinet or a rack-mounted battery holder should be used.
It is also possible to use a shrouded or unshrouded battery rack. Which is more common for larger and heavier UPS battery packs. It also provides better access for inspections.
Only a few in-line interactive UPSs of 2 kVA or less support extension units. For greater autonomy, few in-line interactive UPSs under 2 kVA offer the option of an external battery extension unit. Some 2 kVA UPSs have a battery extension slot and can hold the load for several hours (without overload). Others do not have this capability and if longer run times are. Required, the load size must be increased during the design phase of the UPS system. Try also: APC UPS for your computer
In the last
Leading UPS manufacturers offer a wealth of experience. Whether the solution to an uptime problem lies in oversizing the UPS or specifying the UPS battery extension unit, one thing is certain. To get the most out of your UPS, it’s important to work with a UPS manufacturer. That has a wealth of experience and a wide range of battery extension products.