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SR750 Feeder Management Relay

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SR750 Feeder Management Relay

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    1. SR750 Feeder Management Relay Economical protection, metering, and monitoring functions for small and medium sized generators.

    5. Complete time & inst overcurrent Directional overcurrent control Undervoltage and overvoltage Negative sequence voltage Undervoltage automatic restoration Bus underfrequency Autoreclosing (760 only) Underfrequency automatic restoration Breaker failure, breaker operation & trip failure, VT fuse failure Cold load pickup Syncrocheck Bus transfer Fault locator, event recorder and waveform capture 4 setting groups Power factor - two independent stages Analog input - level and rate Total breaker arcing current Metering: V I Hz W var VA PF Demand: Ia , Ib , Ic , MW, Mvar, MVA Reverse power (optional mod 008) RS232 and RS485 ports Modbus & DNP3 protocols Drawout construction

    7. 3 phase CTs 1 ground CT Zero sequence Residual Mention Dot orientation on CT’s and Pt’s. Mention that you will discuss differential in next slide.Mention Dot orientation on CT’s and Pt’s. Mention that you will discuss differential in next slide.

    8. If you do not have a ground fault Ct the residual ground wiring works well.If you do not have a ground fault Ct the residual ground wiring works well.

    9. 15 Digital Inputs Setpoint Access (Fixed) Wet or Dry Connections 14 Assignable Breaker Functions Control Functions User Inputs with Alarm & Trip Capability & Delay Block Functions Block OC Functions Transfer Functions Misc Functions Wet or Dry Type Virtual Input Selections If you have a Synchronous Motor use must us a 52B contact to let us know the motor is still running. If the current goes below 5% we think the unit has turned off. This is why you will see so many starts in the statistical data.If you have a Synchronous Motor use must us a 52B contact to let us know the motor is still running. If the current goes below 5% we think the unit has turned off. This is why you will see so many starts in the statistical data.

    10. Trip and Close Form A 20A Continuous & 40A make/carry (0.2s) 5 Auxiliary Form C 10A & 30A make/carry (0.2s) 1 Solid State 15A @ 250Vdc for 500ms Self-Test Alarm Contact Form C 8 Analog Outputs Assignable to any metered parameter mA Range Specified in Model No. 1 Analog Input Settable Trip & Alarm with Delay or Rate of Change Settable to 0-1, 0-5, 4-20, 0-20 or 0-10mA range If using the remote RTD unit on the 369 you wire this to one of the three 485 ports.If using the remote RTD unit on the 369 you wire this to one of the three 485 ports.

    11. If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.

    12. If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.

    13. If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.

    14. If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.

    15. If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.

    16. If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.

    17. If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.

    18. If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.

    19. If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.If you have to go into the service factor we now cut off the lower end of curve. Do not shift the curve. Example 100 amp FLA, Used at 110 amps, 6 times is 600 verses 660. Voltage dependant will discuss on future slide Trip coil supervision to monitor that coil is not open so that it will close when we tell it to close.

    20. Individual Voltages & Currents (mag & angle) Sequence Currents and Voltages (mag & angle) Real, Reactive & Apparent Power Real & Reactive Power Costs & Usage Frequency & Power Factor Running & Maximum Demand Levels Current, W, Var, VA Synchronizing Voltage & Frequency

    21. Event Recorder (Last 100 Events) Trace Memory Up to 10 Faults at 16 Cycle Each Selectable Prefault Cycles Fault Locator Breaker Trip & Close Coil Monitoring VT Failure Vo without significant Io Total Breaker Arcing Current (I2t) Monitor Single Analog Input Threshold & Rate of Change Data Logger Any Measured Parameter For Example: Demand I at 15min for 42 Days

    22. Use enerVista 750 Setup Software to Retrieve and View Oscillography Files Mention Learned parametersMention Learned parameters

    23. Mention Learned parametersMention Learned parameters

    25. Flash Memory for Future Upgrades Free Upgrades on Web Site Fully Programmable Keypad 40 Character Display Selectable Message Scrolling Self Testing Draw out Case (no external hardware) Mountable in Breaker Cabinet Extensive IEC & ANSI Testing Complete Burn-in and Testing on Relays Front Door with Gasket and Lock Provision Heavy Duty Terminals ISO 9002 Certified, UL, CSA Optional Conformal Coating Option for Harsh Environment (H)

    26. Enhanced Version Status LEDs Fully Programmable Keypad Target Reset Key Menu Key 40 Character Display Selectable Message Scrolling

    27. Basic Version Status LEDs Fully Programmable Keypad Target Reset Key 40 Character Display Selectable Message Scrolling

    29. enerVista 750 Setup Program View Multiple Relays on Screen Actual Values Setpoints Status Event records Oscillography Data Logger trending Setpoint programming Setpoint files Download updated firmware to Flash memory 1 Front RS232 Port 2 Rear RS485 Ports that support Modbus RTU or DNP3.0 Protocols Optional 10BaseT Port

    31. Converts Modbus RTU over RS485 into Modbus TCP/IP over Ethernet Supports both 10BaseT and 10BaseF fiber connections Industrially hardened product meant for harsh environments Connect up to 32 RS485 serial devices to an Ethernet network Modbus TCP/IP provides multiple SCADA masters allowing simultaneous communications to the same IED Easy to use set up software

    44. Questions?

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