AMI 1000 AP

Performance. An average performer, this UPS from AMI cleared our qualifying load test at a load of 95 percent. It has a good input voltage range of 174V-285 V. The maximum output voltage, however, is not the best at 252, and could be lower. The batteries show a good float voltage of 2.28 V DC per cell, ensuring a good battery life for the UPS. When put on backup test, it gives a backup of about 4 and half minutes. The droop voltage is 210 V, which is fine, though not the best. It can also take a cold start with ease.

Features. This compact UPS scores the highest in features, equivalent to the TVS UPS. It has all the features one could ask for. It comes with a control software, has several indicators, even ones for boosting and bucking modes of UPS operation; has all additional features like a surge protected power output and a surge protector for phone lines. However, it does not have the provision of connectors for an external battery. 

AMI 1000 AP Type: 1000 VA line-interactive Price: Rs 14,900 Backup: 4.5 min Switchover voltage (max, min): 285 V, 174 V Switchover time: 5.8 ms Voltage regulation: 198-252 V

Price. Its pricing is on the higher side at Rs 14900, but it comes with a two-year warranty on both the UPS and batteries. The price also includes the price of the control software.