ALL-TEST PRO AT31 - Table of Contents

©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