CHAPTER 1: INTRODUCTION SPECIFICATIONS889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–25FLEXELEMENTSNumber of elements: ........................................8Operating signal:.................................................Any analog actual value, or two values in a differential modeOperating signal mode: ...................................Signed, or Absolute valueOperating mode: .................................................Level, DeltaComparison direction: ......................................Over, UnderPickup Level:..........................................................-30.000 to 30.000 pu in steps of 0.001 puHysteresis:..............................................................0.1 to 50.0% in steps of 0.1%Delta dt: ...................................................................40 msec to 45 daysPickup and dropout delays: ...........................0.000 to 6000.000 s in steps of 0.001 sFLEXSTATESNumber of States:...............................................256 logical variables grouped under 16 Modbus addressesProgrammability:................................................Any FlexLogic operand, any digital input, any virtual input,any remote inputNON-VOLATILE LATCHESType: .........................................................................Set-dominant or Reset-dominantRange: ......................................................................16 individually programmedOutput: .....................................................................Stored in non-volatile memoryExecution sequence: .........................................As input prior to protection, control and FlexLogicFLEXCURVESNumber: ..................................................................4 (A through D)Reset points:..........................................................40 (0.00 to 0.98 x pickup)Operate points: ....................................................80 (1.03 to 20.0 x pickup)Time delay: ............................................................0 to 200,000,000 ms in steps of 1 msSaturation level:...................................................20 times the pickup levelTAB PUSHBUTTONSNumber of elements: ........................................1 (20 Tab Pushbuttons)Data Storage:........................................................Non-volatile memoryMode:........................................................................Self-reset, latchedDisplay Message:................................................2 lines; 15 characters per lineDropout Timer:.....................................................0.000 to 60.000 s in steps of 0.005Auto-reset Timer:................................................0.2 to 600.0 s in steps of 0.1Hold Timer: ............................................................0.1 to 10.0 s in steps of 0.1Timer Accuracy: ..................................................±3% of delay setting or ±¼ cycle (whichever is greater) frompickup to operateUSER-PROGRAMMABLE LEDSNumber: ..................................................................17 (14 + 3 PB LEDS) for Membrane and Rugged Front PanelsProgrammability:................................................any logic variable, contact, or virtual inputReset mode:........................................................... self-reset or latchedUSER-PROGRAMMABLE PUSHBUTTONSNumber of pushbuttons: .................................3 (Membrane and Rugged Front Panels)Mode:........................................................................Self-reset, latchedDisplay message:................................................2 lines of 13 characters on each lineDropout timer: ......................................................0.000 to 60.000 s in steps of 0.005Auto-reset timer: .................................................0.2 to 600.0 s in steps of 0.1Hold timer:..............................................................0.0 to 10.0 s in steps of 0.1
