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On-line or Double-conversion Uninterruptible Power Supplies (UPS)

 

 

On-line or double-conversion uninterruptible power supplies (UPS) use a constantly-operating power converter whose power source consists of a battery and battery charger that are connected in parallel. They provide the highest quality of power protection because of their double-conversion technique. First, on-line or double-conversion uninterruptible power supplies (UPS) convert incoming AC power to DC. The power is then conditioned to eliminate noise, sags, or surges. Next, the UPS converts the power back to AC. Because power runs continuously through the inverter, there is no transfer or switching-time to battery mode in the event of a blackout.


Products & Services
Three phase uninterruptible power supplies (UPS) operate in conjunction with existing electrical systems to provide power conditioning, back-up protection, and distribution for electronic equipment loads that use three-phase power.  Search by Specification | Learn more about Three Phase Uninterruptible Power Supplies (UPS)
Single phase uninterruptible power supplies (UPS) sit between an AC outlet and an electronic device to provide power conditioning, back-up protection, and distribution for electronic equipment loads. They also prevent power disturbances from affecting the performance and life of the electronic device and vital data.  Search by Specification | Learn more about Single Phase Uninterruptible Power Supplies (UPS)
Photovoltaic (PV) and solar power systems convert light into electricity. They are the building blocks of photovoltaic (PV) modules. Search by Specification | Learn more about Photovoltaic (PV) and Solar Power Systems
Voltage signal conditioners and current signal conditioners amplify or modulate AC or DC current or voltage and process signals to improve transmission. Learn more about Voltage and Current Signal Conditioners
Specialized or proprietary products and accessories related to batteries. Learn more about Specialty Battery Accessories

Product Announcements
Powerstar, Inc. - Shipboard 2.2KVA tower 901D grade A UPS Mil spec
Features of the PS2201-SS Grade A 2.2KVA/1980 watt Mini tower shaped case UPS- Hull mount and straps available. Ø Mil-Std-901D-A Mil-Std-167 Ø Shipboard Delta Power 120VAC to 240VAC. Ø 304... (read more)
Eaton | Powerware - Powerware 9155 UPS w/ Network Monitoring Software!
The new Powerware® 9155 uninterruptible power system (UPS) delivers a genuine triple-play: the latest technology advances, a stylish and user-friendly design, and a budget-pleasing price. In fact, the... (read more)
Eaton | Powerware - UPS w/ Network Monitoring Software- Powerware 5110
The Powerware 5110 uninterruptible power system (UPS) was designed to provide the best UPS power protection against the threats that lurk in public utilities. This line-interactive UPS system delivers... (read more)
Inverters R Us - TrippLite 2000 Watt Inverter
Tripp Lite's APS2012 DC-to-AC inverter with automatic line-to-battery transfer and integrated charging system serves as an extended run UPS, a standalone power source or an automotive inverter. (read more)
SolaHD - Uninterruptible Power Supply
The SolaHD Uninterruptible Power Supply product line consists of four technology topologies and classes of power protection... (read more)
Eaton | Powerware - Powerware 9355 UPS w/ Network Monitoring Software!
Powerware® 9355 UPS Newly expanded to 30 kVA, this popular UPS now counts increased functionality among its many attributes. Its double-conversion, online design ensures clean, continuous power. (read more)
Federal Signal Corporation/Industrial Systems - EDGE Rough Duty Uninterruptible Power Supply
Federal Signal offers the EDGE Rough Duty Uninterruptible Power Supply for harsh electrical environments and critical systems. Designed to meet the rigorous demands of offshore drilling, military and... (read more)
Legacy Power Conversion - Herytage (2kVA-20kVA)
Relying on historically proven ferroresonant technology, the Herytage UPS offers highly customized protection that is ideally suited for your specific application. Select from a wide range of models,... (read more)

Topics of Interest
Off-line or standby uninterruptible power supplies (UPS) derive power directly from the power line (AC outlet) until the power sags or fails. When power sagging or failure occurs, a battery-powered... (Read More)
Line-interactive uninterruptible power supplies (UPS) work in parallel with conditioned input AC power to supply power to the load (boosting or bucking), and only handle the full load power when the... (Read More)
The double conversion electronic voltage regulator differs significantly in operation from the tap switching type EVR. The double conversion EVR uses a rectifier to convert AC power to DC and then... (Read More)
At times, power from a wall socket is neither clean nor uninterruptible. Many abnormalities such as blackouts, brownouts, spikes, surges, and noise can occur. Under the best conditions, power... (Read More)
The full on-line system shown in Fig. 5.1, now also referred to as a double conversion module, is better illustrated in Fig. 5.13. Under normal operation, that is, mains supply is present, the... (Read More)