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EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE How to performin-houseinfraredtrendingofElectricMotors.

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Presentation on theme: "EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE How to performin-houseinfraredtrendingofElectricMotors."— Presentation transcript:

1 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE How to performin-houseinfraredtrendingofElectricMotors Example Report

2 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE Procedure for trending temperatures on Electric Motors Make sure the motor is at operating temperature (steady-state). The first time the survey is performed, take a photograph of the motor. Take a thermograph (infrared picture) also, if you have an infrared (IR) camera. But you do not need an IR camera for this. If you have one - use it, but a $100 spot radiometer will do just fine. Take a can of barbeque grill paint (E=~.95), SAFELY clean and/or paint the points where you plan on taking the temperatures. Enter the date. Enter the high temperature (HT). Get the high temperature from the inboard bearing. Enter the ambient temperature (AT). Get the ambient temperature from the motor foot or a painted spot on the floor near the motor. The Temperature Rise (Delta-T) will automatically show in the spreadsheet and on the graph. Put this page in a notebook (or the spreadsheet below) and take the notebook to enter the numbers each month/week/day. If the trend is higher temperatures every time you check the motor:  Increase the frequency (say from monthly to weekly) and see if the Delta-T continues to rise and watch it closer.  Check other connected components, i.e., outboard bearing, winding, coupling.  Add other testing, i.e. airborne ultrasonic analysis, vibration analysis, oil and wear particle analysis, eddy current analysis. General Notes:  Pick a temperature scale at the beginning of the trending. (Either °C - Celsius or °F - Fahrenheit and always use the same scale.  Keep the surface clean with an air hose, so dust does not build up on the inboard bearing and insulate it.  After blowing it off, give the bearing a few minutes to come back to steady state temperature.  This trending is predicated on the fact that the Delta-T (HT - AT = Delta-T) will not change if the motor stays in the same condition.  If the motor's inboard bearing gets hotter over time, something is wrong. Increase frequency and check other components.  The motor's inboard bearing is the pivot point of all other connected components, if something goes wrong anywhere, the bearing heats.  Don’t worry about being off a few degrees here or there. The idea is that you will be able to see a trend. Even if some errors are introduced, so as long as you use the same repeatable method, you will see the trend.

3 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE #1 #2 Spray Pump 87 125 38

4 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE

5 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE Note: SAFELY clean dust/dirt from the target area before recording high temp. High Temp.

6 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE #1 #2 Spray Pump 79 122 43 Note: Don’t put the ambient temp mark where it will be affected by the motor temperatures.

7 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE #1 #2 78 178 100

8 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE #1 76 107 31

9 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE #2 #6 CHWP Pump 75 147 72

10 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE # # # 76 158 82 #2 #6 RAF#4A

11 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE 79 158 79 # # # #2 #6 RAF#4D

12 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE # # # 78 176 98 # # # # # # #2 #6 Spray Pump #4

13 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE #2 #5 # 75 127 52 RAF#3E

14 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE #2 #5 #3C 76 147 71

15 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE #2 #5 # 75 137 62 RAF#3C

16 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE #2 #5 # 76 139 63 Spray Pump #3

17 EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORS Plant Air Wash Supply Fan Temperature Rise = ____ High Temp = ____ Ambient = ____ EXAMPLE Aerial Electrical Infrared on Transmission Lines Mechanical Equipment IR P/PM Electrical Equipment IR P/PM Industrial Process Monitoring Structural Analysis 800-248-SCAN Environmental Impact Surveys Building Heat Loss Surveys Aerial Infrared Roof Moisture Surveys Typical R&D test set-up www.stocktoninfrared.com State - of - the - IRt™


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