URC AC-PRO-II Quick Start Manual
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URC AC-PRO-II Quick Start Manual

URC AC-PRO-II Quick Start Manual

Ac trip unit
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Summary of Contents for URC AC-PRO-II

  • Page 3: Table Of Contents

    600 Volt class, AC circuit Security Code ........... 2 Time and Date Setting ........2 breakers on 50 Hertz or 60 Hertz systems. The AC-PRO-II 3.0 Rotating the Display ..........2 features a rotatable 128 x 64 Multi-line, Organic Light Emitting 4.0 Testing ................

  • Page 4: Commissioning The Ac-Pro-Ii

    Local Display (rotatable) The Local Display is normally mounted to the trip Before the AC-PRO-II trip unit is put into service, it must first unit. It can be rotated or separated from the trip be commissioned so it will function. This requires the user to unit for specific breakers where space is limited.

  • Page 5: Testing

    4.0 Testing A "primary injection" test is recommended as the final test of the AC-PRO-II retrofit. If residual GF is used, it must be temporarily turned off when testing the other trip functions. Before proceeding with the normal primary injection tests, the trip unit must be commissioned to make it functional.

  • Page 6: External Connections

    Fault Protection and/or CT Configuration shown Neutral Overload Normal Power Flow allows for Residual protection. Ground Fault protection and Neutral Overload Protection. Figure D: AC-PRO-II Typical Wiring Diagram Page 4 AC-PRO-II Typical Wiring Diagram updated August 2017 (Simplified Vertical Configuration)
  • Page 7 VERIFY SETTINGS AND UNIT HARDWARE IS CAPABLE OF PHASE LOSS PROTECTION. SETTINGS SAVED NOTE: THIS IS A TYPICAL MAP. SCREENS & SEQUENCES VARY DEPENDING ON ORDER CODES AND SETTINGS. Figure E: Typical AC-PRO-II Menu Navigation Map - Simple View Page 5...

  • Page 8: Quick-Trip System (Optional)

    QUICK-TRIP settings reducing the Arc Flash “Push-to-Verify” button is available. Pressing this button will Hazard to personnel. “wake up” the trip unit using the AC-PRO-II battery, and the QUICK-TRIP ON LED will illuminate, providing positive When the maintenance work is finished, the QUICK-TRIP...

  • Page 9: Ac-Pro-Ii Quick-Trip Switch Mounting

    Attach the QUICK-TRIP Switch to the front of the cubicle door using the two (2) supplied 10-32 screws and lock Figure I: AC-PRO-II Quick-Trip Switch washers. Connect the QUICK-TRIP Switch to the AC-PRO-II trip ® Remote QUICK-TRIP Switch unit by plugging one end of the 4/C cable provided into the jack on the back of the QUICK-TRIP Switch.

  • Page 10: Usb Extension Cable

    Quick Start Manual Rev 2.0 www.utilityrelay.com 8.0 USB Extension cable If AC-PRO-II is installed on a breaker that is located behind a To install the USB Extension cable: cubicle door, a USB panel mount extension cable and legend plate is provided in the retrofit kit. This provides a permanent 1.

  • Page 11: Normal Operations & Readings

    Note: If voltages and voltage labels (“Vab, Vbc, Vca”) do not AC-PRO-II firmware in the field using the USB port. display, the AC-PRO-II is either not equipped with a VDM, or AC-PRO-II Firmware update instructions can be found in the the VDM is not properly connected to the AC-PRO-II, contact InfoPro-AC Help Menu.

  • Page 12: Appendix A - Time Current Curves (Tcc)

    (10A steps for CTs < 225A) (I-OVRD) I Pick-Up @ 1200% of CT Rating 150% (if applicable) I Pick-Up Current in Multiples of Long Time Pick-Up AC-PRO-II O.L. Rev 1.02 08/15/2017 Overload Time Current Curve Appendix A.1: Overload TCC Page 10...

  • Page 13: Appendix A.2: Ground Fault (Gf) Tcc

    IEEE C37.17. IEEE C37.17. 40% 60% 100% 200% Current in Percent of CT Rating Current in Multiples of Ground Fault Pick-Up AC-PRO-II G.F. Rev 2.01 08/15/2017 Appendix A.2: Ground Fault (GF) TCC Ground Fault Time Current Curve Page 11...

  • Page 14: Appendix A.3: Neutral Overload (Nol) Tcc

    Neutral CTs Secondary Rating below 0.5A 50% to 200% of CT Rating 600% NOL Pick-Up NOL ends at 1200% of CT Rating. 100% 1000% 200% 500% Current in Percent of NOL Pick-Up AC-PRO-II NOL Rev 1.2 07/14/2015 Appendix A.3: Neutral Overload (NOL) TCC Page 12...

  • Page 15: Appendix A.4: Quick-Trip Ground Fault And Quick-Trip Instantaneous Tccs

    Current in Percent of CT Rating Current in Multiples of Long Time Pick-Up Quick-Trip Ground Fault Time Current Curve Quick-Trip Instantaneous Time Current Curve AC-PRO-II Q.T. Rev 1.02 01/15/2015 Utility Relay Company Appendix A.4: QUICK-TRIP Ground Fault and QUICK-TRIP Instantaneous TCCs Chagrin Falls, Ohio 44023 888-289-2864 www.utilityrelay.com...
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