HC-20C
7-5
TESTING PROCEDURE
JOG to HOLD MODE
After performing the steps under
BASIC OPERATION
, follow the steps below to perform the Jog to Hold
function.
1.
Click
Settings
in
Test Parameters:
Enter the desired output current set-point. This is the current
that the test set will ‘jog’ to.
2.
Click
Settings
in
Test Parameters:
Enter the number of cycles that the output will be energized.
This should be long enough to get a good reading, but short enough to avoid overheating. Phenix
Technologies recommends a value of 7 cycles.
3.
Click
Settings
in
Test Parameters:
Enter the time period that the regulator will increase its output
with the output of the test set de-energized. The OFF Seconds should be long enough to move the
Vernier a reasonable amount, such as 1 to 2 seconds, but not so long that the current increment is
too coarse. The setting of the Regulator Speed Control also must be adjusted in conjunction with
the OFF SECONDS to prevent too much / too little travel during the OFF time.
4.
Ensure that the breaker status indicator indicates that the Breaker is CLOSED.
5.
Click the START button to begin the test.
Note:
If the regulator speed is set too high, the test set may overshoot the set-point and will be
constantly adjusting the variable transformer to try to obtain the set-point current. If this
occurs, use the speed control to decrease the regulator speed until the variable
transformer movement is acceptable.
If the desired current is obtained at a low Tap and Vernier position, it may be impossible
to hold the set value accurately. Better results can be obtained by adding impedance
(such as longer cables), to raise the Tap and Vernier settings.
6.
The test set will automatically increase the current up to the HOLD AMPS setting. The output turns
off when the HOLD AMPS setting is reached. Click the STOP button to stop the test at any time.
To continue with a long time test, perform the following:
7.
Select either the CURRENT HOLD mode or the NORMAL mode by clicking the TEST MODE pull-
down menu.
● CURRENT HOLD mode will constantly adjust to hold the specified current. (Recommended)
● NORMAL mode will not adjust the output, and the effects of heating and input line fluctuations will
affect the output current. The operator must make any adjustments required to maintain current
at the HOLD AMPS set-point.
8.
Click the START button to energize the output. Click the STOP button to stop the test at any time.
9.
The test set will hold the current until the breaker trips or the operator interrupts the test.
10. Optional
– click
Save Results
.
