Enter 3D / Quest motor floor
Stopped Speed 0% Selected rating 2,500 hp A1+ / A2− 125 VDC 41-L coil 0 V Stator current 0% FLA Power factor — 36-inch valve CLOSED · 0% Valve command 30% · MIN K45 seal-in READY Motor-relay trip latch CLEAR
0%
4.8 kV breaker & motor control 52-L open
52
4800 V · 3Ø · 60 Hz Drawout air-magnetic breaker · selected circuit
L1
L2
L3
52-C closing mechanism / latch
RELAY TRIPoutput healthy RELAY TARGETtrip targets clear VLV-CLSclosed proof 52a-Lopen
READY RUN FIELD TRIP
DC excitation & field cubicle Discharge connected
LOW2,500 hp
FAR-Lslip-frequency relay
41-Lfield contactor
Field resistor L
Mechanical
interlock
HIGH5,000 hp
FAR-Hslip-frequency relay
41-Hfield contactor
Field resistor H
Field discharge resistor · across rotor until 41 closes
Motor RelayProtection & Control
IN SERVICE PICKUP ALARM TRIP 52 CLOSED LOW SELECTED HIGH SELECTED FAR PICKED FIELD APPLIED VALVE CLOSED VALVE OPEN K45 SEAL-IN BEARING TEMP VIB TRIP · 0.20
MOTOR STATUS00:00.0
STATESTOPPED
BREAKER52-L OPEN
FIELDDISCHARGE
VALVECLOSED · 0%
K45READY
MESSAGEREADY TO START
USB
Representative legacy synchronous motor & pump train 2,500 hp low
Dual synchronous motor, pump, and 36-inch Venturi discharge valve Low- and high-speed synchronous motor sections share one shaft with a centrifugal pump. Five bearing RTD locations, motor and pump vibration points, and a 36-inch actuated Venturi discharge valve are labeled. LOW · 2,500 HP HIGH · 5,000 HP 30 MGD PUMP 36-IN VENTURI VALVE CLOSED · 0% CLOSED LS OPEN LS MTR OB MTR IB PUMP IB PUMP OB THRUST MOTOR VIB PUMP VIB
Normal <75°C Alarm 75–84°C Latched trip ≥85°C
Either channel at 0.20 in/s RMS or higher trips the motor relay and latches its trip target until the input is reduced and RESET RELAY TRIPS is pressed.
4.8 kVstator supply 30 MGDpump rating Both on dischargeselected rotor field CLOSED PROOF MADE36-inch valve limits
Pump stopped · rated capacity shown, actual flow not modeled
4.8 kV busAvailable
27 · 50/51 · 50GHealthy
52-L / 52a-LOpen
Stator + damper cageDe-energized
125 VDCAvailable
FAR-LWaiting
41-LOpen
Rotor fieldDischarge
VLV-CLSClosed proof made
K45 seal-inReady
VLV-POS ≥30%Run position not made
Ready. Select LOW or HIGH at the breaker cubicle and press START / CLOSE 52.
Representative training sequence: valve-closed proof permits the start and initiates K45; K45 seals the motor control circuit for up to 45 seconds while the illustrative discharge valve leaves the closed limit; valve position at or above 30% carries the running permissive. The operator position command is adjustable from 30–100%, while NORMAL STOP overrides the positioner and closes the valve to 0% before opening 52. The five bearing RTDs use illustrative 75°C alarm and 85°C latched-trip setpoints. Motor and pump vibration each trip at 0.20 in/s RMS. Protective trips latch in the motor relay; no separate 86 relay is modeled in the trip path. Equipment geometry, identifiers, ratings, relay programming, FAR pickup, breaker type, and timing are illustrative. Training use only—not an approved switching, settings, or as-built document.