Line Interactive UPS for Small Networks & Office Automation has only one transformer which, when the mains is present is used for stabilization of output and also delivers power for charging the battery. When power fails, the function is reversed and used as INV transformer. Line Interactive UPS for Small Networks & Office Automation is manufactured by Unipar Energy Systems Pvt. Ltd. An ISO 9001-2000 certified company, Unipar Energy Systems Pvt. Ltd is engaged in the manufacturing of UPS and Servo Stabilizers. Unipar Energy Systems Pvt. Ltd manufactures complete range of UPS Systems - 500VA to 400kVA, in all types - Online, Line Interactive And Domestic Inverters.
Line Interactive UPS for Small Networks & Office Automation are for essentially computer type loads where the back up required may be 30 min to four hours. Capacities available are 500VA[12V], 1KVA[24V], 1.5KVA[24V/36V], 2KVA[36V] and 3KVA[48V]. In a line Interactive UPS, the load is connected to the mains supply which is stabilized directly. The moment the power fails the load will be switched over to the output of the inverter. There is a definite switch over time in Offline UPS which can be between 5ms to 20ms. Upto 20ms, interruption in power will not be felt while using the computer because the SMPS input capacitor, will supply power to the computer. Line Interactive UPS is a variant of Offline UPS.