Line-interactive Three Phase Uninterruptible Power Supplies (UPS)
Description
Line-interactive Three Phase Uninterruptible Power Supplies (UPS) are designed to provide power conditioning, backup protection, and power distribution for loads that utilize three-phase power. These systems ensure a continuous power supply by working in conjunction with existing electrical systems, maintaining power stability and reliability.
Working Principle
Line-interactive UPS systems operate by having the inverter work in parallel with conditioned-input AC power to supply power to the load. This setup allows the UPS to boost or buck the voltage as needed, ensuring stable power delivery. The inverter only handles the full load power when the AC input power fails, making it an efficient solution for environments with occasional power disturbances. This topology is particularly useful because it provides voltage regulation without constantly relying on battery power, thus extending battery life and reducing wear.
Applications
Line-interactive Three Phase UPS systems are commonly used in environments where power quality is important but not critical. Specific examples include small to medium-sized data centers, telecommunications facilities, and office buildings where maintaining power during short outages or voltage fluctuations is necessary to protect sensitive equipment.
Advantages over other Three Phase Uninterruptible Power Supplies (UPS)
Compared to other types of UPS systems, line-interactive UPSs offer a balance between cost and performance. They are generally more affordable than double-conversion UPS systems while providing better power conditioning than off-line UPS systems. This makes them a suitable choice for applications where power quality is important but not as critical as in environments requiring double-conversion UPSs.
Limitations
One limitation of line-interactive UPS systems is that they may not provide the same level of power conditioning as double-conversion UPS systems. In environments with frequent and severe power disturbances, a line-interactive UPS might not be sufficient to protect sensitive equipment. Additionally, they are not as energy-efficient as off-line UPS systems, which can lead to higher operational costs over time.
Considerations
When considering a line-interactive Three Phase UPS, it is important to evaluate the initial costs, which are generally lower than double-conversion systems but higher than off-line systems. Operating expenses can be moderate due to the need for occasional battery use and maintenance. Durability and accuracy are typically sufficient for environments with moderate power quality requirements. Replacement and maintenance costs should also be considered, as the batteries will eventually need replacement, and regular maintenance is necessary to ensure reliable operation.
from Mitsubishi Electric Power Products, Inc.
Design: 3-Phase, On-Line Double Conversion Topology. Power Rating: 100, 150, 225kVA. Voltage Input: 208V Output: 208V. Available for Isolated Redundant Applications. Design Features: * IGBT(Converter/Inverter). * 1:1 Generator Compatible. * Dual Input. * Low Audible Noise. * Two (2) Year... [See More]
- Technology: Line-interactive
- Watt Rating: 80 to 180
- Volt-Amp Rating: 100 to 225
- Full Load Output Current: 600
from SOCOMEC
The solution for. • Server rooms. • Service sector. • Infrastructure. • Healthcare sector. • Light industrial applications. Advantages Innovative design. • Easy to order, install and operate. • Very compact footprint. • Robust and reliable connectivity. •... [See More]
- Technology: Line-interactive
- Volt-Amp Rating: 10 to 20
- Protection: Transient; Power Failure; Voltage Sags
- Voltage: 400 V (configurable: 360/380/400/415)
from Mitsubishi Electric Power Products, Inc.
The Mitsubishi Electric 9800A Series Uninterruptible Power Supply (UPS) provides the reliability and superior performance expected of an Mitsubishi UPS along with the flexibility and adaptability for Single- or Multi-module system applications. The 9800A system uses the most advanced Insulated Gate... [See More]
- Technology: Line-interactive
- Volt-Amp Rating: 100 to 750
- Protection: Surge
- Watt Rating: 80 to 675
from SOCOMEC
Socomec ’s IP+ Rail is the very latest in UPS technology for the mass transportation sector and has been engineered specifically to provide optimum energy efficiency for high performance critical power applications - in the most challenging operating environments. Key Benefits. • Full... [See More]
- Technology: Line-interactive
- Volt-Amp Rating: 10 to 80
- Protection: Transient; Power Failure; Voltage Sags; Unbalanced Loads
- Full Load Runtime: 5 to 20
from SOCOMEC
The EMergency CPSS range has been designed to answer your needs in terms of power supply for your safety system. All our EMergency products are compliant with standard EN 50171. The EMergency CPSS products are intended to ensure energy supply to emergency escape lighting in the event of main supply... [See More]
- Technology: Line-interactive
- Volt-Amp Rating: 80 to 500
- Protection: Transient; Power Failure; Voltage Sags
- Full Load Runtime: 60 to 120
from SOCOMEC
The solution for. • Data centres. • Telecommunications. • Service sector. • IT Networks/ Infrastructures. • Industrial infrastructures. Solution for seismic environments. The test. • DELPHYS GP-S units have been tested by VIRLAB S.A. (accredited by ENAC Spanish National... [See More]
- Technology: Line-interactive
- Volt-Amp Rating: 160 to 500
- Protection: Transient; Power Failure; Voltage Sags
- Voltage: 400 V