Jacobs Ranch Mine 2570W Electrical System Upgrade Presented to: - - PowerPoint PPT Presentation

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jacobs ranch mine 2570w electrical system upgrade
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Jacobs Ranch Mine 2570W Electrical System Upgrade Presented to: - - PowerPoint PPT Presentation

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Jacobs Ranch Mine 2570W Electrical System Upgrade Presented to: Salt Lake City, Utah June 2006 Presented by: Calvin Randall / Rio Tinto Energy America Aaron Spielman / Rio Tinto Energy America Rob Marnell / Drives and Controls Services

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Jacobs Ranch Mine 2570W Electrical System Upgrade

Presented to: Salt Lake City, Utah – June 2006 Presented by:

Calvin Randall / Rio Tinto Energy America Aaron Spielman / Rio Tinto Energy America Rob Marnell / Drives and Controls Services Rick Scherer / Flanders Electric

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Motor Comparison Table

Motor MD-622M MD-822 HP @ 475 Vdc 1245 HP 1045 HP Rated Amps 2100 Amps 1760 Amps Max Operating Volts 660 Vdc 600 Vdc Peak HP @ 600 V 1875 HP 1560 HP RPM 740 RPM 740 RPM

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622M Upgrade vs 622 and / or 822

Lengthened Armature and Field Iron Increased Air Flow with Larger Blower Revised Insulation System / Class H Wet Wound Welded Pole Face Bar Connections Brush Arm Rocker Ring made Adjustable V-Ring Commutator 100% Equalized on Drive End

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MD-622M Benefits

Higher Horse Power with Same Foot Print Cooler Running Temps ~ Longer Life at 822 Values Increased Armature Circuit Current α Torque Ease of Maintenance / Reduced Maintenance Higher RMS is not Detrimental to 836KW Generators, Case Study in Service since 1994 RTD’s in Comm Coil, Pole Face Bar, Shunt Field,

  • ptional Telemetry RTD on Armature

Internal Split Connections for Ease of Maintenance Each Machine is Black Band Tested

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622M vs 822 Temperature Rise Test Parameters

490 Vdc 1950 Amps 1 Hour 9050 Ft Lbs 743 RPM 1281 HP 93 Volts 67 Volts Armature Voltage Armature Current Run Time Torque RPM HP 622M Field Voltage 822 Field Voltage

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Temperature Test Results

Degrees Celsius MD-622M MD-822 Commutator 117 134 Armature 148 158 Comm Coil 70 82 PF Bars 97 126 Shunt Fields * 115 94 Intake / Exhaust 30 / 46 30 / 48

* 622M Served as Generator at Higher Field Amps * 822 Served as Motor at Lower Field Amps

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Questions ?

Thank You