GE TLE 160 User Manual

Also see for TLE Scalable 150: Quick start guide

Contents

Critical PowerModifications reserved Page 15/91GE_UPS_USM_TLE_SUL_M16_M50_2bU_V010.docx User Manual TLE Series 160 - 500 UL S2B4.2.3 Utility Failure OperationWhen the Utility is no longer within acceptable tolerances,the Battery will provide the DC power to the Inverter.The Inverter will maintain continuous AC power to theLoad until the Battery Voltage reaches the lower limit ofthe Inverter operation capability.During the discharge, the LCD screen shows the estimatedtime the Battery can support the critical Load.Prior to complete Battery discharge, the "stop operation"alarm (shut-down imminent) warns the operator that theBattery is almost discharged and the UPS is about to shutdown.Fig. 4.2.3-1 Block diagram Utility Failure operationIn case of RPA Parallel SystemWith a Parallel System for power capacity (see Section 4.3)• With the Bypass Utility power available, a “Battery low” warning on any unit will cause the Loadto be transferred to Utility (after a selectable time delay).• With Bypass Utility power not available, a “Battery low” warning on any unit will start the “stopoperation” timer (adjustable).The Load will shut down at the end of the “stop operation” time period.With a Parallel System for redundancy (see Section 4.3)• When a Battery low warning occurs on a unit not necessary to support the present Load, this unitwill shut down after a timeout period (selectable).The Load is shared between the other units.• As the warning occurs on one unit necessary to support the present Load, the system starts the"stop operation" timeout (selectable).The Load will shut down at the end of the “stop operation” time period.4.2.4 Utility Recovery OperationAs soon as the AC input power recovers, the Rectifier willstart automatically, supplying DC power to the Inverterand recharging the Battery.If the Inverter was previously shut down due to lowBattery, the Load will be initially powered by Utilitythrough the Automatic Bypass.When the Battery is sufficiently recharged to ensure aminimum time of operation with the present Load, theInverter will start automatically and the Load will betransferred back to the Inverter.Fig. 4.2.4-1 Block diagram Utility recovery operationIn case of RPA Parallel SystemWhen the AC input power recovers, the Rectifiers will start-up sequentially, according to theirnumber in the Parallel System. This minimizes the initial inrush current.The Inverters will start-up automatically, but only when the Battery has been sufficiently rechargedfor a minimum runtime with the present Load.When enough Inverters to supply the Load have been restarted, the Load will be transferred fromthe Automatic Bypass back to the Inverter output.