WE HAVE TO BUY 100 KVA  ON-LINE UPS FOR PVC PIPE EXTRUDER AT DEHRADUN PLEASE GUIDE ME WHAT SHOULD LOOK WHILE BUYING UPS. SUPPLIER AROUND DEHRADUN WELCOME.WE REQUIRED 5 TO 2 MIN BACKUP ONLY. WE HAVE PVC PIPE EXTRUDER AT DEHRADUN WHERE POWER IS BIG PRO BLAME WE HAVE STANDBY D.G FOR POWER SUPPLY.WE REQ 5 MIN OR 1 MIN BACKUP FOR EXTRUDER WE CAN FIT AUTO START CHANGEOVER SWITCH FOR D.G OR BUY 3 MIT BACKUP UPS WHICH SOLUTION IS LOW COST AND BETTER