GE GEH-5304A manual Testing Methods Visual Inspection, Insulation Resistance Measurement

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GEH-5304A

For maximum insulation life, these three causes of insulation failures should be prevented:

1.Contamination.

2.Mechanical factors.

3.High temperatures.

L.Testing Methods

1.Visual Inspection

In addition to collecting contaminants, insulation shrinks, cracks and becomes brittle with heat and age. These changes allow movement of coils, loose filler strips, loose ties, chafing and abrasion, all of which can be picked up by visual inspection.

Experience and judgement can be gained by careful observation and comparing results of visual in- spections with insulation resistance measurement. GE Service Shops have personnel who can inspect equipment and point out potential trouble areas. Their services can help build experience and judge- ment for future visual inspections.

2.Insulation Resistance Measurement

A method of measuring the insulation resistance is described in Report 43, “Recommended Practice for Testing Insulation Resistance of Rotating Machinery” , published by IEEE, 345 E. 47th Street,

New York, NY 10017. The resistance measurements should be taken with a 500 or 1000 volt megger and corrected to 104°F (40°C).

The insulation resistance measurements are affected by the following:

a.Magnitude of test voltage.

b.Time the test voltage is applied.

c.Temperature.

d.Surface condition (contaminants).

e.Moisture.

When a 1000 volt megger is used, taking readings of one minute and converting the data to 40°C (104°F), the data will evaluate the other two factors, i.e., the contaminants and the moisture present.

The insulation resistance varies inversely with the winding temperature. That is, as the temperature decreases, the insulation resistance increases in accordance with Table 13.

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Contents Instructions Copyright 1985, 1992, 1999 General Electric Company Table of Contents Storage of Renewal Parts Storage II. ReceivingHandling Location Typical WeightsMounting AlignmentCoupled Drive Grouting Belt DrivesBearing Life Belt Tension Factor, Kb Maximum Continuous Thrust Capacity, Lbs Special Load ConsiderationsPinion Drives Thrust LoadsCommutator and Brushes Rectified Power SuppliesInspection Before Starting Bearings and CouplingsSpeed Life Factor Less Than 500 Bearing Life at 1750 RPM Average Speed Vs. Load, WFrame Sizes CD2812AT and CD2813AT Power Supply Available Thermostats ConnectionsProtective Devices Motor Field HeatingA1, A2 F1, F2, F3, F4, etc. T1, T2, T3, T4, etc Accessories & Special Device MarkingsLead Markers Function WindingGeneral Mechanical Inspection Ventilation SystemInspection After Starting Accessory MountingBolt Tightening Torque Values BrakesNoise and Vibration Inspection After Short Time in ServiceReassembly DisassemblyStandard Bearings for CD2512AT-CD2813AT Motors Replacement of BearingsRecommended Regreasing Periods Frame Size CD2512AT- CD2813AT AverageSources of Supply for Bearing Greases Standard Temperature 15F to 212F -10C to 100CLow Temperature High Temperature-20F to 350F -28C to 176CBrush Installation Brush Assembly CommutatorCommutator Diameters In Inches Lubrication of Flexible Couplings MechanicalShaft End Play Waterproof MachinesGEH-5304A Ues Insulation Resistance Measurement Testing Methods Visual InspectionCleaning of Windings Effect of Temperature on Insulation ResistanceOily Dirt Service Shop Cleaning Drying of WindingsRepair Storage of Renewal Parts VI. Renewal PartsWith Electrical Shop Facilities Number of Duplicate Motors in Service DescriptionRecommended Spare Parts With or Without Electrical Shop FacilitiesCommutator Check Chart Application Information for CD2512AT CD2813AT Frames GEH-5304A Dimensions, Air Openings for CD2512AT CD2813AT Frames Renewal Parts For CD2512AT CD2813AT Frames Air Flow Requirements For Separately Ventilated MotorsFrame 2512AT, 2513AT 2812AT, 2813AT Base Speed AllAccessory Mounting CD2512AT CD2813AT Accessory Mounting CD2512AT CD2813AT GEH-5304A Type CD Frames 2512AT 2813AT 5HDGHU&RPPHQWV Detach and fax or mail to the address noted above Fort Wayne in 46801-2205 USA Isaac #

GEH-5304A specifications

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In summary, the GE GEH-5304A stands out in the market due to its advanced data acquisition capabilities, compatibility with multiple communication protocols, user-friendly interface, predictive maintenance functionalities, and rugged design. These features make it an essential tool for industries seeking to optimize performance, enhance monitoring, and ensure process reliability. With the ongoing evolution of technology, devices like the GEH-5304A are pivotal in driving operational success across various sectors.
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