11
Manager will substantially reduce any such risk.
Recording to on-board memory
Press the record button to start and stop recording. When data recording
is enabled the record symbol will flash on and off repeatedly. Recording
can only be activated before testing commences. Results are stored at
15, 30, 45 and 60 seconds. After 60 seconds, at minute intervals up to
10 minutes. After 10 minutes, results are recorded at 5 minute intervals
until the test terminates. At each interval the recorded data will contain
selected voltage, test time elapsed, voltage applied, leakage current, and
insulation resistance.
Downloading results
Connect the instrument to the RS232 / USB port of a PC running
Download Manager. Refer to section ‘RS232 / USB connection’ for set up
details. Start Download Manager on your PC, select the S1-1054 driver
and right click the icon. Select ‘Download’.
Switch the instrument on and wait until initialisation is complete. Press
the function key along with the record key. The instrument now displays
‘dld’ to indicate download mode. Press and hold down test button until
download begins, shown by analogue display lighting clockwise.
Results will not be erased during this operation and so may be
downloaded repeatedly.
Deleting test results
Switch the instrument on and wait until initialisation is complete. Hold
down the function key and press the record key twice. The instrument
now displays ‘clr’ to indicate clear mode. Press and hold down test
button until clear process begins, shown by analogue display lighting anti
clockwise. Press the MODE button to exit without deleting the results.
The insulation resistance ‘IR’ test operates in either ‘burn’ or ‘breakdown’
mode, with an option of setting a resistance threshold ‘alarm limit’.
These modes can be cycled through and selected by holding down the
Fn button and pressing the Mode button.
Timer
s
and
t
buttons
The main timer can be set up to 99mins 59secs. The T
s
button
increments the time, and the T
t
button decrements the time in ten
seconds steps. An auto repeat facility allows the time to be set more
quickly. Setting a time of 00:00 disables the timer. With the timer
disabled a test has to be manually stopped.
To select timer Tmain, T1 or T2 hold down the Fn button whilst
repeatedly pressing the T
s
or T
t
buttons. To set the selected timer,
release the Fn button, and use the T
s
or T
t
buttons.
The minimum timer setting is 15 seconds for test voltages of 1000 V or
more, and 30 seconds below this.
Note: T2 cannot exceed the time on main timer unless it is disabled
(00:00). T1 cannot exceed the time on T2.
Record button
This button is used to start and stop recording. Recording can only be
activated before testing. When data recording is enabled the ‘record’
symbol flashes.
Data is stored in solid-state memory and under normal circumstances
will maintain its integrity for in excess of ten years, but may rarely be
corrupted or lost by external influences such as transients and static
discharge. Megger Limited cannot accept responsibility for any losses of
data. Regular downloading to a PC using software such as Download
