Eaton ATC-300 O & M Manual

Also see for Cutler-Hammer ATC-300: Instruction booklet Operation and maintenance manual Instruction booklet Instruction booklet O & M Manual

IB01602015E For more information visit: www.eaton.comInstruction BookletEffective: August 2010 Page 9ATC-300 2-Postion Contactor Based Transfer Switch3.5 FeaturesA variety of standard and optional features are available for EatonATSs. All features or combinations of features may not be avail-able on specific ATSs. All features and/or accessories are Under-writers Laboratories (UL) listed unless noted.3.5.1 Standard FeaturesThe following is a list of the standard features for the ATC-300Controlled ATS.1. Time Delay Normal to Emergency (TDNE)This feature provides a time delay when transferring fromthe Source 1 to the Source 2 power source. Timing beginswhen Source 2 becomes available. It permits controlledtransfer of the load circuit to Source 2.Adjustable 0 - 1800 Seconds2. Time Delay on Engine Starting (TDES)This feature provides a time delay of the signal to initiatethe engine/generator start cycle in order to overridemomentary power outages or voltage fluctuations ofSource 1.Adjustable 0 - 120 Seconds3. Time Delay Emergency to Normal (TDEN)This feature provides a time delay of the re-transfer opera-tion to permit stabilization of Source 1. Timing beginswhen Source 1 becomes available. If Source 2 fails duringtiming, then re-transfer is immediate overriding the timedelay.Adjustable 0 - 1800 Seconds4. Time Delay for Engine Cool-down (TDEC)This feature provides a time delay of the signal to initiatethe engine/generator stop cycle after the re-transfer opera-tion. This allows the engine/generator to cool down by run-ning unloaded. Timing begins on completion of the re-transfer cycle.Adjustable 0 - 1800 Seconds5. Source 2 Monitoring and ProtectionThis feature provides monitoring and protection based onthe Source 2 voltage and/or frequency setpoints. All fea-ture 5 functions are Failsafe operations.5B. 1-Phase Undervoltage and Underfrequency ProtectionAdjustable Undervoltage:Dropout: 78 - 97% of nominalPickup: (Dropout +2%) to 99% of nominalAdjustable Underfrequency:Dropout: 90 - 97% of nominalPickup: (Dropout +1Hz) to 99% of nominal5C. 1-Phase Overvoltage/OverfrequencyAdjustable Overvoltage:Dropout: 105 - 110% of nominalPickup: 103% to (Dropout –2%) of nominalAdjustable Overfrequency:Dropout: 103 - 105% of nominalPickup:101% to (Dropout -1Hz) of nominal5D. 1-Phase UndervoltageAdjustable Undervoltage:Dropout: 78 - 97% of nominalPickup: (Dropout +2%) to 99% of nominal5E. 1-Phase OvervoltageAdjustable Overvoltage:Dropout: 105 - 110% of nominalPickup: 103% to (Dropout –2%) of nominal5F. 3-Phase UndervoltageAdjustable Undervoltage:Dropout: 78 - 97% of nominalPickup: (Dropout +2%) to 99% of nominal5G. 3-Phase OvervoltageAdjustable Overvoltage:Dropout: 105 - 110% of nominalPickup: 103% to (Dropout –2%) of nominal5H. Phase ReversalFor a 3-phase wye source, this feature monitors the phasesequence of the sources. If a source does not have thesame ABC or CBA sequence as the setpoint value, thatsource will be considered “Unavailable.For a 3-phase delta source, this feature should be turned offvia the PHASE REV setpoint.5J. All Phase Undervoltage and Underfrequency ProtectionAdjustable Undervoltage:Dropout: 78 - 97% of nominalPickup: (Dropout +2%) to 99% of nominalAdjustable Underfrequency:Dropout: 90 - 97% of nominalPickup: (Dropout +1Hz) to 99% of nominal5K. All Phase Overvoltage/OverfrequencyAdjustable Overvoltage:Dropout: 105 - 110% of nominalPickup: 103% to (Dropout –2%) of nominalAdjustable Overfrequency:Dropout: 103 - 105% of nominalPickup: 101% to (Dropout -1Hz) of nominal