EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLEHow to How to

perform perform in-house in-house infrared infrared trending trending

of of Electric Electric MotorsMotors

Example Example Report Report

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLEProcedure 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.

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLE#1#2

Spray Pump

87125

38

*>129.1°F

*<83.6°F

90.0

100.0

110.0

120.0

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLEExample Motor - Supply Fan 3GDATE High Temp. Ambient Temp. Rise Notes06/01/05 125 87 38 07/01/05 129 88 41 08/01/05 133 89 44 09/01/05 148 90 58 10/01/05 196 92 104 11/01/05 225 95 130 12/01/05 246 95 151 Motor was rewound during shutdown01/01/05 142 88 54 02/01/05 138 89 49 03/01/05 139 90 49 04/01/05 141 89 52 05/01/05 142 89 53 06/01/06 139 89 50

Temperature Rise

38 41 44

58

104

130

151

54 49 49 52 53 50

0

20

40

60

80

100

120

140

160

Jun-01 Jul-01 Aug-01 Sep-01 Oct-01 Nov-01 Dec-01 Jan-02 Feb-02 Mar-02 Apr-02 May-02 Jun-02

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLENote: SAFELYclean dust/dirt fromthe target areabeforerecording high temp.

High Temp.

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLE#1#2

Spray Pump

79122

43

Note: Don’t put the ambient temp mark where it will be affected by the motor temperatures.

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLE#1#2

#2

78178

100

*>175.4°F

*<60.8°F

80.0

100.0

120.0

140.0

160.0

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLE#1#1

#1

76107

31

*>120.5°F

*<57.5°F

60.0

70.0

80.0

90.0

100.0

110.0

120.0

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLE#2 #6

CHWP Pump

75147

72

*>152.1°F

*<66.6°F

70.0

80.0

90.0

100.0

110.0

120.0

130.0

140.0

150.0

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLE# #

#

76158

82

#2 #6

RAF#4A

*>161.3°F

*<69.3°F

80.0

100.0

120.0

140.0

160.0

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLE 79158

79

# #

#

#2 #6

RAF#4D

*>160.0°F

*<78.4°F

80.0

90.0

100.0

110.0

120.0

130.0

140.0

150.0

160.0

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLE# #

#

78176

98

# #

#

# #

#

#2 #6

Spray Pump #4

*>182.8°F

*<73.4°F

80.0

100.0

120.0

140.0

160.0

180.0

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLE#2 #5

#

75127

52RAF#3E

*>134.5°F

*<65.9°F

70.0

80.0

90.0

100.0

110.0

120.0

130.0

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLE#2 #5

#3C

76147

71

*>150.1°F

*<66.6°F

70.0

80.0

90.0

100.0

110.0

120.0

130.0

140.0

150.0

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLE#2 #5

#

75137

62RAF#3C

*>140.2°F

*<73.8°F

80.0

90.0

100.0

110.0

120.0

130.0

140.0

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC MOTORS

Plant Air Wash

Supply Fan

Temperature Rise = ____

High Temp = ____ Ambient = ____

EXAMPLE#2 #5

#

76139

63Spray Pump #3

*>143.3°F

*<68.1°F

70.0

80.0

90.0

100.0

110.0

120.0

130.0

140.0

EXAMPLE SURVEY OF EXAMPLE SURVEY OF ELECTRIC MOTORSELECTRIC 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 MonitoringStructural Analysis

800-248-SCAN800-248-SCAN

Environmental Impact Surveys

Building Heat Loss Surveys

Aerial Infrared Roof Moisture Surveys

Typical R&D test set-up

www.www.stocktonstocktoninfraredinfrared.com.com

State-of-the-IRt™