short dated tender - corrigendum : supply of line interactive ups with avr of rating 1.0 kva as per the specification as follows; (1) technology- mosfet-pwm, (2) inverter efficiency (%) - 60% or better (3) minimum guaranteed battery backup time (minutes) on full load- 30, (4) type of battery- smf-vrla confirming to jisc-8702 pt 1,2 & 3, (5) battery capacity (ah) - 7ah (6) minimum guaranteed vah provided to meet or exceed minimum guaranteed back up time- 168, (7) battery make- exide, bpe, luminous, amaron or similar, (8) rated output (volt) with total harmonic distortion (%)-single phase quasi sinewave 230 v ac 50 hz with total harmonic distortion as <=40%, (9) input (volt) - single phase ac (160-280v),(10) make/brand: microtek, luminous, v-guard, apc, bpe, genus or similar.