Airport UPS systems are hugely important. Downtime as a result of a power disturbance at an airport can cause mass panic and dissatisfied customers. When the power fails at airports, stations such as control towers, baggage handling, scanners, warning systems and surveillance equipment also fail. For security reasons as well as passenger wellbeing, these need to remain operational. Thankfully, for airport owners, there is a fail safe solution on the market that continues to provide power in outages. This solution is uninterruptible power supplies.
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Airports require a significant amount of power to operate, so they are more likely to face issues such as power overloads, short circuits and transients. In the most extreme cases, airports can witness total power outages. With these factors in mind, standby power for airports needs to be reliable, efficient and high quality. An emergency power system for large scale applications such as airport power must be able to function properly under extreme conditions. Our airport UPS systems fit this brief.
Standby power for airports work by converting AC power to DC power which will then be routed through an inverter into the power load. A power rectifier system will work with the UPS to protect the load from power surges and sags, so your power supplies continue to operate effectively.
In normal situations and regular circumstances, an airport industrial UPS system will charge batteries and supply DC power to the load. To be prepared for any potential failure, the inverter will draw power from the batteries until the power supply is restored or when the minimum DC limit is reached to allow crucial airport operations to continue. Once the power comes back on, the rectifier mechanism will resume again when power is restored. The operation of standby power systems for airports is completed without affecting the operations of airport load, so important stations can run throughout power problems.
When considering which airport UPS system to use, you should look into the key factors of efficiency and durability to find the right system. We have a range of recommended UPS systems which, we believe, can handle the demands of airport operations. If you require further advice on UPS for airports, get in touch with us today by requesting a quote below. We regularly act in a consultancy capacity, so we are more than qualified to answer any questions you have about uninterruptible power supplies.
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Standby battery backup systems play a critical role in keeping essential operations functional in the event of a utility outage.
Facilities like data centers, hospitals, airports, utilities, oil and gas facilities, and railways can't operate without 100 percent backup power reliability. Even standard commercial and manufacturing facilities have backup power systems for their emergency systems, alarms and controls, emergency lighting, steam and fir control systems.
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Most backup power systems use an uninterruptable power supply (UPS) and a string of batteries. The UPS backs up the digital control system (DCS) to keep control of plant operations until systems can be safely shut down or until the auxiliary generator kicks on.
Although most batteries used in modern day UPS systems are "maintenance free," they are still susceptible to deterioration from corrosion, internal shorts, sulphation, dry-out, and seal failure. This article outlines best practices for keeping these "battery banks" at optimum performance, so that if an outage does occur, the backup is ready.
Internal resistance is a life-span test, not a capacity test. Battery resistance stays relatively flat up until the end of life draws near. At that point, internal resistance increases and battery capacity decreases. Measuring and tracking this value helps identify when a battery needs replacing.
Only use a specialized battery tester designed to measure battery resistance while the battery is in service. Read the voltage drop on the load current (conductance) or the AC impedance. Both results will be in ohmic values.
A single ohmic measurement is of little value without context. Best practice requires measuring ohmic values over months and years, each time comparing them to previous values on record to create a base line.
Discharge testing is the ultimate way to discover the true available capacity of a battery but can be complicated to perform. In discharge testing, a battery is connected to a load and discharged over a specified period. During this test period, current is regulated, and a constant known current is drawn while voltage is measured periodically. Details of the discharge current, the specified time period for discharge testing, and the capacity of the battery in ampere hours can be calculated and compared to the manufacturers' specification. For example, a 12V 100-amp hour battery may require a discharge current of 12A for an eight-hour period. A 12V battery would be discharged when the terminal voltage is 10.5V.
Batteries cannot support critical loads during and immediately after a discharge test. Transfer critical loads to a different battery bank until well after the test is complete and then reconnect a temporary comparably sized load to the batteries under test. In addition, before conducting the test, prepare a cooling system to compensate for a rise in ambient temperature. When large batteries discharge, they release a significant amount of energy expended as heat.
Healthy batteries should maintain a capacity above 90% of the manufacturer's rating; most manufacturers recommend replacing the battery if it falls below 80%. When conducting battery tests, look for these indicators of failure:
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