Line Interactive UPS Systems

The line-interactive UPS isin operation to a standby UPS, but with the addition of a multi-tap variable-voltageautotransformer. This is a special type oftransformerthat can add or subtract powered coils of wire, thereby increasing or decreasing the magnetic field and the output voltage of the transformer. This is also known as aBuck–boost transformer.
This type of UPS is able to tolerate continuous undervoltagebrownoutsand overvoltage surges without consuming the limited reserve battery power. It instead compensates by automatically selecting different power taps on the autotransformer. Depending on the design, changing the autotransformer tap can cause a very brief output power disruption,which may cause UPSs equipped with a power-loss alarm to "chirp" for a moment. This has become popular even in the cheapest UPSs because it takes advantage of components already included. The main 50/60Hz transformer used to convert between line voltage and battery voltage needs to provide two slightly different turns ratios: One to convert the battery output voltage (typically a multiple of 12V) to line voltage, and a second one to convert the line voltage to a slightly higher battery charging voltage (such as a multiple of 14V). The difference between the two voltages is because charging a battery requires a delta voltage (up to 13–14V for charging a 12V battery). Furthermore, it is easier to do the switching on the line-voltage side of the transformer because of the lower currents on that side.
To gain thebuck/boostfeature, all that is required is two separate switches so that the AC input can be connected to one of the two primary taps, while the load is connected to the other, thus using the main transformer's primary windings as an autotransformer. The battery can still be charged while "bucking" an overvoltage, but while "boosting" an undervoltage, the transformer output is too low to charge the batteries.
Autotransformers can be engineered to cover a wide range of varying input voltages, but this requires more taps and increases complexity, and expense of the UPS. It is common for the autotransformer to cover a range only from about 90V to 140V for 120V power, and then switch to battery if the voltage goes much higher or lower than that range.
In low-voltage conditions the UPS will use more current than normal so it may need a higher current circuit than a normal device. For example, to power a 1000-W device at 120V, the UPS will draw 8.33A. If a brownout occurs and the voltage drops to 100V, the UPS will draw 10A to compensate. This also works in reverse, so that in an overvoltage condition, the UPS will need less current.
Line Interactive UPS Available with us :
Make & Model
Short Specifications
Product Link
APC UPS - BX600C-IN
600VA APC UPS for Desktop / Laptops / Modems* / Routers*
APC UPS - BE700Y-IND
700VA APC UPS for Desktop / Laptop
APC UPS - BE800-IN
800VA APC UPS for Desktop / Laptop
APC UPS - BR1000G-IN
1000VA / 1KVA APC UPS for Multiple Desktops /Laptops
APC UPS - BR1500G-IN
1500VA / 1.5 KVA APC UPS for Multiple Desktops /Laptops
APC UPS - BR1100C-IN
1100VA / 1.1 KVA APC UPS for Multiple Desktops /Laptops
APC UPS - SUA750I-IN
750VA APC UPS for Desktops /Laptops, Industrial Applications
APC UPS - SUA1000I-IN
1000VA / 1 KVA APC UPS for Desktops /Laptops, Industrial Applications
APC UPS - SUA1500I-IN
1500VA /1.5 KVA UPS for Desktops /Laptops, Industrial Applications
APC UPS - SUA2200I-IN
2200VA /2.2 KVA UPS for Desktops /Laptops, Industrial Applications
APC UPS - SUA3000I-IN
3000VA /3.0 KVA UPS for Desktops /Laptops, Industrial Applications
External Battery Models
APC UPS - SUA1000UXI
1000VA /1.0 KVA UPS for Desktops /Laptops, Industrial Applications
APC UPS - SUA2200UXI
2200VA /2.2 KVA UPS for Desktops /Laptops, Industrial Applications
APC UPS - SUA3000UXI
3000VA /3.0 KVA UPS for Desktops /Laptops, Industrial Applications
External Battery Models for Mixed Load / Lighting Load
BI850SINE-IN
850VA Home UPS with Sine Wave for Lighting / Mixed Load (12V input)
BI1500SINE-IN
1500VA Home UPS with Sine Wave for Lighting / Mixed Load (24V )
1000 / 2000VA Home UPS with Sine Wave for Lighting / Mixed Load (24V )
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