GE GEH-5304A manual Commutator Check Chart

Page 33

GEH-5304A

Commutator Check Chart

For Comparing Commutator Surface Markings

SATISFACTORY COMMUTATOR SURFACES

LIGHT TAN FILM over entire commu-

MOTTLED SURFACE with random film

SLOT BAR-MARKING, a slightly dark-

HEAVY FILM can appear over entire

tator surface is one of many normal

pattern is probably the most frequently

er film appears on bars in a definite

area of efficient and normal commu-

conditions often seen on a well-

observed condition of commutators in

pattern related to number of conductors

tator and, if uniform, is quite accept-

functioning machine-

industry.

per slot.

able.

 

 

 

 

WATCH FOR THESE DANGER

STREAKING on the commutator surface signals the

THREADING of commutator with fine lines results

GROOVING is a mechanical condition caused by

beginning of serious metal transfer to the carbon

when excessive metal transfer occurs. It usually

abrasive material in the brush or atmosphere. If

brush. Check the chart below for possible causes.

leads to resurfacing of commutator and rapid brush

grooves form, start corrective action.

 

wear.

 

 

 

 

COPPER DRAG, an abnormal build-up of commutator

PITCH BAR-MARKINGproduces low or burned spots

HEAVY SLOT BAR-MARKING can involve etching

material, forms most often at trailing edge of bar.

on the commutator surface. The number of these

of trailing edge of commutator bar. Pattern is re-

Con-dition is rare, but can cause flashover if not

markings equals half or all the number of poles on the

lated to number of conductors per slot.

checked.

motor.

 

 

 

 

CAUSES OF POOR COMMUTATOR CONDITION

Frequent visual inspection of commutator surfaces can warn you when any of the above conditions are developing so that you can take early corrective action. The chart below may indi- cate some possible causes of these conditions, suggesting the proper productive maintenance.

Streaking

Threading

Grooving

Copper Drag

Pitch Bar-Marking

Slot Bar-Making

Electrical Adjustment

X

Electrical Overload

X

Light

Electrical

Load

X

X

Armature Connection

X

Unbalanced

Shunt

Field

X

Brush

Pressure

(Light)

X

X

X

X

Vibration

X

X

Type of Brush

In Use

Abrasive

Porous

Brush

Brush

X

X

 

X

X

 

X

 

X

 

 

 

Contamination

 

Abrasive

Gas

Dust

XX

X

X

X

X

HOW TO GET THE MOST VALUE FROM THIS CHART

The purpose of the Commutator Check Chart is to help you spot undesirable commutator conditions as they develop so you can take corrective action before the condition becomes serious. This chart will also serve as an aid in recognizing satisfactory surfaces.

The box chart above indicates the importance of selecting the correct brush and having the right operating conditions for optimum brush life and commutator wear.

For additional information or help with carbon brush application or commutation problems. Contact your nearest GE Sales Office or Distributor.

33

Page 32 Page 34
Image 33
Page 32 Page 34
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 Pinion Drives Special Load ConsiderationsThrust Loads Maximum Continuous Thrust Capacity, LbsInspection Before Starting Rectified Power SuppliesBearings and Couplings Commutator and BrushesSpeed Life Factor Less Than 500 Bearing Life at 1750 RPM Average Speed Vs. Load, WFrame Sizes CD2812AT and CD2813AT Power Supply Available Protective Devices ConnectionsMotor Field Heating ThermostatsLead Markers Function Accessories & Special Device MarkingsWinding A1, A2 F1, F2, F3, F4, etc. T1, T2, T3, T4, etcGeneral Mechanical Inspection Ventilation SystemBolt Tightening Torque Values Accessory MountingBrakes Inspection After StartingNoise and Vibration Inspection After Short Time in ServiceReassembly DisassemblyRecommended Regreasing Periods Replacement of BearingsFrame Size CD2512AT- CD2813AT Average Standard Bearings for CD2512AT-CD2813AT MotorsLow Temperature Standard Temperature 15F to 212F -10C to 100CHigh Temperature-20F to 350F -28C to 176C Sources of Supply for Bearing GreasesBrush Installation Brush Assembly CommutatorCommutator Diameters In Inches Shaft End Play MechanicalWaterproof Machines Lubrication of Flexible CouplingsGEH-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 PartsRecommended Spare Parts Number of Duplicate Motors in Service DescriptionWith or Without Electrical Shop Facilities With Electrical Shop FacilitiesCommutator Check Chart Application Information for CD2512AT CD2813AT Frames GEH-5304A Dimensions, Air Openings for CD2512AT CD2813AT Frames Frame 2512AT, 2513AT 2812AT, 2813AT Base Speed Air Flow Requirements For Separately Ventilated MotorsAll Renewal Parts For CD2512AT CD2813AT FramesAccessory 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

The GE GEH-5304A is a sophisticated electronic device that has garnered attention for its applications in various industrial sectors. This cutting-edge equipment is primarily used for monitoring and controlling processes through advanced technology integration, making it a valuable asset for businesses looking to enhance operational efficiency.

One of the standout features of the GE GEH-5304A is its robust data acquisition system. This system effectively collects, processes, and analyzes data from multiple sensors and instruments, enabling real-time monitoring of critical parameters. With its high sampling rate and accuracy, the GEH-5304A ensures that users can make informed decisions based on reliable data, thus minimizing risks and enhancing productivity.

The GEH-5304A integrates seamlessly with various communication protocols, including Ethernet, RS-232, and RS-485. This versatility allows it to connect effortlessly to existing infrastructure and facilitates data sharing across different platforms. This interoperability is essential in modern industrial environments, where different systems must communicate for optimal performance.

Another key characteristic of the GEH-5304A is its user-friendly interface. The device features an intuitive display that provides clear visualizations of data trends, alarms, and system statuses. This ease of use empowers operators to quickly identify issues and make necessary adjustments, thereby reducing downtime and improving overall operational reliability.

In terms of advanced technology, the GEH-5304A boasts built-in diagnostics and predictive maintenance capabilities. These features enable it to identify potential problems before they escalate into failures, allowing for proactive maintenance and minimizing costly unscheduled outages. Moreover, the device's ability to log historical data plays a crucial role in trend analysis and long-term planning.

Durability is another hallmark of the GE GEH-5304A. Designed to withstand harsh industrial conditions, it demonstrates resilience against temperature fluctuations, vibration, and dust. This robustness enhances its longevity and reduces the frequency of replacements and repairs.

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.
Top Page Image Contents