©2011, ALL-TEST Pro, LLC rev 2011-11F
Table of Contents
I. Introduction.....................................................................................................5
II. Safety.............................................................................................................6
Instrument Warnings and Considerations .........................................................6
General Safety Considerations .........................................................................6
III. ALL-TEST PRO® 31 Kit Components.......................................................7
Instrument Operation .......................................................................................7
Input Section................................................................................................7
Display Section............................................................................................8
Indicator Light Section.................................................................................8
Display Screen.............................................................................................8
Keypad Section............................................................................................9
Instrument Test Leads................................................................................10
IV. Testing a Three Phase Induction Squirrel Cage Motor..........................11
Operating Procedure 3-Phase Motors.............................................................11
Winding Test .................................................................................................11
Turn the Instrument On..............................................................................12
Select the Motor Test .................................................................................12
Observe/Record the Test Data....................................................................12
ERROR CODES........................................................................................13
Continue with Other Phases .......................................................................14
Continue with Last Phase ...........................................................................15
Phase Balance Test ........................................................................................17
Insulation Resistance Testing.........................................................................20
Rotor Test......................................................................................................22
Bar Test .....................................................................................................22
Wave Form Test.........................................................................................23
Changing the Motor Test Frequency ..............................................................24
V. Additional Functions and Features...........................................................26
Electro-Magnetic Interference (EMI): ............................................................26
Resetting the Unit ..........................................................................................27
VI. Charging Your ALL-TEST PRO® 31.......................................................28
VII. Data Interpretation Three Phase Motors................................................29
Data Interpretation Tables..............................................................................29
Additional Data Interpretation Considerations Three Phase Motors............30
Test Location .............................................................................................30
Rotor Windings..........................................................................................30
Confirming Suspected Winding Shorts.......................................................30
Method 1: Rotor Compensation..................................................................31
Method 2: Variable Frequency Test............................................................31
VIII. DC Motor Testing....................................................................................32
Testing an Assembled DC Motor ...............................................................33
Series DC motor.........................................................................................33
Compound or Shunt DC motor...................................................................33
