Megger SR-98, Инструкция по эксплуатации

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12
STOP LATCH
:
When the
STOP
circuit is latched
ON
, the stop latch allows timing to be stopped
at the first operation of any selected stop gate. When the
STOP
circuit is latched
OFF
, the stop latch allows timing to be stopped by any stop gate and then
restarted if the stop gate reverses (provided a start gate is still energized) and
stopped when the stop gate is again true. NOTE: When using the
MONITOR
feature, the STOP LATCH must be OFF .
Out Freq.
:
Based on the Model number of the unit, this value will default to either 60 HZ or 50 HZ .
If another output frequency is desired (other than the default) for the CURRENT MAIN
output, the user highlights this value and rotates the Control Knob either clockwise to
increase or counter-clockwise to decrease the value. Output frequencies available are
16.66, 25, 33.3, 50, 60, 100, 120, 125, 150, 180, 250 or 300 Hz. In addition, to
synchronize the CURRENT MAIN to the input line source, select 60 Hz SYNC or 50 Hz
SYNC . Once selected the SYNC light on the front panel will be lit. The output current
will be in-phase with the line voltage,
±
5 degrees, depending on which output tap is
selected and the test current set. Note: The higher output taps results in less phase
error.
Mon Horn :
The user can select to turn the Monitor Horn ON or OFF . The horn sounds when the
relay contacts close. In the event that the contacts are normally closed, the horn would
sound continuously, until they are opened. The default setting is Horn
OFF . To
change, press HORN ON/OFF button to turn ON.
Del Cycles :
Used in conjunction with the INIT button and the MODE SELECT button, the user can
select the number of cycles that the CURRENT MAIN output will be on. The MODE
SELECT button at the bottom of each Test Screen controls whether the output is in the
MOM.
(
MOMENTARY)
mode, or the
MAINT.
(
MAINTAIN
Mode). If in the
MOM.
mode,
the output will only be on for the
Del. Cycles
setting. For example, the default is 4
cycles. This means that the output will be ON for approximately 4 cycles. This value
may be changed up to 10 cycles by using the arrow keys to highlight the value and
rotating the control knob to the desired number of delay cycles.
DESCRIPTION OF TEST SCREENS
The following descriptions apply to the different Test Screens that appear in the
TEST
MENU
Screen. There are common Amplitudes, Features and Function Buttons
associated with many of the screens. These Amplitudes, Features and Function
Buttons will be described only one time, with the
CURRENT RELAY Test Screen
.
Other Values, Features or Function Buttons that are unique to an individual Test Screen
will be described with the associated screen description.