HC-20C
11-3
WinHC PC SOFTWARE
Tap:
Selects the output tap. Higher taps produce a higher output voltage and therefore higher current.
Current Range:
Selects the range on the current meter. Note: The current meter may auto-range
upward when the current level exceeds the current range.
Start/Stop:
Initiates and halts a test.
Jog:
Pulses the output on, just long enough to collect an accurate RMS current reading, which is then
displayed in the current meter window.
Reset:
Aborts a test and resets the test results.
Meters:
Displays the RMS output current, the trip timing, and the transformer temperature.
Save Result:
Saves in the database the results of the latest breaker test, including the waveform.
Time:
Selects the time base of the trip timer results, either seconds or cycles.
Test Mode:
Selects the test mode of operation: Normal, Jog-To-Hold, Jog-To-Trip, Current Hold, or
Memory.
Connection:
The output connection mode, the default is Parallel for maximum output current.
Test Parameters
This window displays the current test parameters. Click the
Settings…
buttons to modify these
parameters. Each test type title has a set of test parameters associated with it. When you select a
different test type the test parameters, last used with that test type, will be recalled.
Max Limits
This window displays the present max duration and max current limits (if any exist). Click
Modify…
to
change these parameters.
Initialize
The traditional method to position the output level is to use the Jog-To-Hold function. The Initialize
function performs the exact same function as Jog-To-Hold but does it faster and more efficiently. Initialize
is an automatic process, you do not need to pre-configure the output controls. The test mode, current
range, etc. will all be controlled automatically.
Initialize works as follows: beginning near the bottom of tap 1, sample output pulses will be made at
various points of each tap as the software determines the required tap and vernier position for the desired
current. You MUST NOT enter a desired test current that is at or above the level where the breaker
under test will trip. If the breaker trips during initialization, then the process will be aborted.