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MESTA DPM Owner's Manual

Digital power manager 50 amp panel
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MESTA ELECTRONICS, INC.
Digital Power Manager
50 amp Panel
Owner's Manual
SAVE THESE IMPORTANT
SAFETY INSTRUCTIONS
11020 Parker Drive
N. Huntingdon, PA 15642
412/754-3000

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  • Page 1 MESTA ELECTRONICS, INC. Digital Power Manager 50 amp Panel Owner’s Manual SAVE THESE IMPORTANT SAFETY INSTRUCTIONS 11020 Parker Drive N. Huntingdon, PA 15642  412/754-3000...

  • Page 2: Table Of Contents

    5.3.2 DPM DATE AND TIME ......................13  5.3.3 HISTORICAL EVENT DATABASE DISPLAY INFORMATION ..........14  5.3.4 CHANGING SYSTEM OPERATING PARAMETERS ............14  APPENDIX A. DPM SPECIFICATIONS BY MODEL ................17  APPENDIX B. CUSTOMER INSTALLATION DIAGRAM ............... 19  APPENDIX C. WARRANTY/SERVICE AND REPAIR ................21 ...
  • Page 3 3ACDPM050 - 3ACDPM300 (Page Intentionally Left Blank)

  • Page 4: Introduction

    WARNING Always keep the front door fastened. Leaving the unit’s door open may expose personnel to an electrical shock hazard that could result in death or injury, or damage to the DPM or to the electrical loads it is correcting.

  • Page 5: Safety Precautions

    OFF position for 5 minutes prior to opening the door of the unit. For additional safety, if possible, the external AC breaker feeding the DPM and the non-linear load should also be locked in the OFF position. If this is not possible, the top terminals of the disconnect inside the unit will be electrically hot, and must therefore be avoided.

  • Page 6: Installation

    In order to perform any of the following wiring functions, the AC disconnect in the unit must be in the off position as well as the distribution box breaker that connects the DPM to the utility and load. In addition, all of the safety instructions and warnings located in the “Safety Precautions”...

  • Page 7: Connecting Power Wiring And External Current Sensors

    Once the interface location, proper branch circuit protection and the appropriate power wiring have been selected the DPM should be prepared for installation. On the right side on the top of the DPM cabinet there is a pilot hole (two pilot holes for 200/300 amp systems), which is provided for the power wiring.

  • Page 8: Installation Procedure

    Do not attempt to turn on power to the DPM until all steps have been completed. The line side is defined as the wiring from the utility that powers both the DPM and the loads to be corrected. Conversely, the load side is defined as the wiring “after” the DPM that powers only the loads to be corrected.

  • Page 9: Operating The Unit

    > 5% of the power rating of the DPM. (The power rating of the unit is equal to .83 kW per amp of correction. Ex. 100-amp DPM = 83 kW. 5% = 4.15 kW).

  • Page 10: Front Panel Touch Screen Display

    4.2 FRONT PANEL TOUCH SCREEN DISPLAY The Mesta DPM is equipped with a touch screen display on the front of the system, which can perform the following functions and display the following parameters “RUN” and “STOP” function – The system can be enabled or disabled by pressing the “RUN” or “STOP”...
  • Page 11 4.2.1 Changing System Operating Parameters using the Front Panel Touch Screen To view/set parameters, go to the MENU, and press VIEW/SET PARAMETERS. There are presently 10 parameters that can be viewed. Three parameters are displayed at a time. Use the up and down arrow keys on the right side of the display to view a different set of 3 parameters.

  • Page 12: Status Connections

    In addition to the front panel described in the previous section, there is a 12 pin green connector (P2) located on the small customer interface board located inside the DPM (Refer to installation diagram located in the appendix B of this manual). The customer interface board has three status relays whose contacts can be accessed via this connector.

  • Page 13: Serial/Ethernet Communications

    5.1 CONNECTING TO THE SERIAL COMMUNICATIONS INTERFACE Serial and Ethernet communications interfaces are provided on the front of the DPM to allow the unit to be configured and data collected from the unit. The serial communications interface conforms to the RS-232C signal specification.

  • Page 14: Connecting To The Ethernet Interface

    DPM. This way, you will always know the IP address for the DPM, and it will not change. Once you have the IP address for the DPM, you can access it from any computer on the network in various ways. One way is through the Hyperterminal program. Set up Hyperterminal properties to “Connect using”...

  • Page 15: System Software Commands

    5.3.1 STATUS REPORTS Type S <enter> to obtain the DPM’s operating status. The following typical screen appears: * * * M E S T A D P M S T A T U S * * * L I N E _ V O L T A B / B C / C A = 4 8 6 .

  • Page 16: Dpm Date And Time

    5.3.2 DPM DATE AND TIME The DPM has a timekeeper that is used to timestamp when events occur. The time is not used in any critical systems in the DPM and will not affect its performance. To display the current time setting, enter TI at the command prompt.

  • Page 17: Historical Event Database Display Information

    The “On/Off” database contains information about each time the DPM began and stopped correcting harmonics. The cause of the DPM turning off is recorded, as well as the time and date. In some cases, additional information is archived for advanced troubleshooting. To obtain On/Off records, add the “O”...
  • Page 18 Placement of the CTs on the line side is preferred for optimum system performance. CT placement on the load side of the DPM™ is required if more than one unit is being installed in parallel, or if line side CT placement is not possible.
  • Page 19 In order to conserve energy, and to protect the system against potential damage due to improper installation, the DPM will stop operating unless the incoming line power read by the unit is > 2% of the power rating of the DPM and unit will not initialize itself, and begin operation unless the incoming line power read by the unit is 5% (or 3% higher than the “unit disable”...

  • Page 20: Appendix A. Dpm Specifications By Model

    APPENDIX A. DPM SPECIFICATIONS BY MODEL This section of the Mesta Electronics Owner's Manual contains a set of operating specifications for the model that you have purchased.
  • Page 21 3ACDPM050/480 – 50 AMP 3 DPM SPECIFICATIONS POWER INDICATORS AND CONTROLS Voltage  480VAC 3 Delta Nominal LCD TOUCH SCREEN  provides detailed Current  50 Amps information on , AC line, load, and system correction current Crest Factor Capability  3.0 operating parameters LCD TOUCH SCREEN ...

  • Page 22: Appendix B. Customer Installation Diagram

    APPENDIX B. CUSTOMER INSTALLATION DIAGRAM This section of the manual contains an installation diagram for the specific model DPM that has been purchased.

  • Page 24: Appendix C. Warranty/Service And Repair

    Mesta Electronics, Inc. will be the sole determiner as to whether the unit has been abused or misused. If found to be defective, the unit will be repaired or replaced at the discretion of Mesta Electronics, Inc. Unless specified by contract, warranty service can only be obtained by returning the equipment to the Mesta factory.
  • Page 25 Mesta Electronics, Inc Pioneers in Power Electronics! REV 2.13 (04-10)
  • Page 26 MESTA ELECTRONICS, INC. 11020 Parker Drive N. Huntingdon, PA 15642  412/754-3000...

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