UPS SYSTEM OFFLINE

This system is basically an OFF-LINE UPS system. In this system, the output waveform is synchronized with the Mains waveform. Thus the change over the inverter mode is faster (about 2ms) compared to the common OFF-LINE UPS. Compounded with automatic Voltage Regulator (AVR) this may be a cost-effective solution for a stand-alone computer where power conditions are less severe. For LAN application though, it is questions. Firstly, whenever mains power is available, it is directly given to the load though it is controlled to some extent by the built-in AVR. Thus the load is not completely isolated from the mains. The Differential mode noise (DMRR) can be greatly attenuated in this systems, however the Common Mode noise (CMRR) is still passed on to the computer. Moreover, if this is such a good system that it can replace an ON-LINE UPS system, one wonders why the same companies who manufacture LINE-INTERACTIVE system, also manufacture the ON-LINE systems.

SALIENT FEATURES


SPECIFICATIONS

Complete fitted with SMF Battery (12V 8AH)

Output Power Capacity 2625 VA / 390-400 W
Technology PWM-MOSFET
Nominal Output Voltage 230 ± 1%
Output Voltage 195 to 255 V AC
Nominal Input Voltage 160-285 V AC
Input Frequency 47 to 53 Hz
Transfer Time < 8ms
Overload Protection Fuse and internal current limiting circuit
Battery Type Maintenance free sealed lead acid battery
Typical Back-up time Minimum 30 minutes
Acoustic Noise < 45db @ 1m
Control Panel Online displays, ON battery, overload indicators
Alarm Low battery alarm