Baker D30R, User Manual

Page: 48 / 82

Surge Testing
12/3/2009 | 71-022 V6
D30R 48
2) Connect lead #1 on one side of the coil or winding.
3) Connect test lead #2 to the other side of the coil or winding.
4) Connect the black Ground lead and test lead #3 to the frame or housing of the coil or
winding.
5) Turn the Function switch to the Surge position.
6) Select TLS position #1. This lead will be Hot.
7) Set the VOLTS/DIV switch at the lowest setting that will allow the maximum pattern to
be viewed entirely on the CRT.
8)
Depress and hold the TEST button (or FOOTSWITCH).
9) Press Up or Fast Up switch. Apply voltage to the test windings. Monitor the trace on the
display and adjust the Volts/Div and Seconds/Div controls to get the best waveform.
Release Up or Fast Up when voltage is reached.
10) Adjust the OUTPUT and VOLTS/DIV controls to the desired voltage level while
maintaining a fully visible wave pattern on the CRT display. The voltage is measured
from the zero line to the first positive peak (at the far left) of the trace multiplied by the
display VOLTS/DIV setting. The peak voltage is numerically displayed in the upper right
portion of the Surge Test display.
11) When the test for the lead is complete, the TEST button may be released.
12) If the surge wave pattern appears steady and stable, the winding insulation is sufficient
to withstand the applied voltage and the test is successful.
Note: If the wave pattern begins to flicker or rapidly ship to the left and right and/or up and
down as the Output is increased, there is weakness in the winding insulation and intermittent
arcing between the windings or phases. The winding or phase contains a fault when the wave
pattern shifts to the left and the amplitude drops. The more severe the shift and amplitude
drop, the more severe the fault. Faults are often accompanied by an audible arcing sound.
13)
When an obvious fault is present, perform Step 7 below. End the test by disconnecting
the motor from the tester.
14)
Store the test results in the tester’s memory.
15) For testing a single coil or for standards testing, store the pattern using Quick Store.
16) Press the function key corresponding to Store. A list of available records and leads
appears.
17) Press the key corresponding to Quick Store. The wave pattern is now stored in Record
#1, Lead #1 and is immediately recalled on the screen.
18) Store the pattern conventionally if the tests are to be downloaded to a pc for further
analysis.
19) Press the function key corresponding to Store. A list of available records appears.
20) Press the keys corresponding to the UP and/or DOWN to bring the cursor to the desired
Record. Press Select.