Megger SR-98, Инструкция по эксплуатации

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5
Hardware Reset
Button (
17
):
This small recessed button is used to reset the hardware. In case of a total system
shutdown, this button may be pressed to reset the hardware without switching the
power on/off switch.
Rotary Control Knob
(
18
):
The rotary knob rotates clockwise and counterclockwise to affect the highlighted field on
the display screen. It provides continuous, variable, control of the selected output.
Used to control the amplitudes of the
CURRENT MAIN
,
AC AUX
and
DC AUX
outputs.
It may also be used to vary the Phase Angle between the
AC AUX
and
CURRENT
MAIN
outputs. It may also be used in conjunction with the Cursor Arrow Keys to
change default settings to the Timer and other control functions. For example, using the
cursor arrows, a function like Ramp may be highlighted. Rotating the knob either
direction changes the selected ramp rate from Normal to Fast to Slow back to Normal.
POWER ON/OFF
Switch (
19
):
The switch controls the input power to the unit. Power on is indicated by the meter
display, which will light up when the unit is energized.
Digital Display
(
20
):
The digital display is a LCD panel with a resolution of 128 X 256 pixels. It indicates
metered quantities of ac and dc current, ac and dc voltages, and Time in both Seconds
and Cycles. Depending on type of test selected, other values may be displayed, such
as Ohms, Watts, VARS, Phase Angle, Frequency or Power Factor. The metered
readings are auto-ranging. In addition, the display also allows the user to select other
features using the Function Buttons located directly below the display. See
Display
Screens
for description of available functions.
ALARM RESET
Button ( 21 ):
In the event of a thermal overload, output overload, or a Power Factor Corrector (PFC)
overload, the test set will protect itself and shut down operation. An overload message
will be displayed on the screen indicating what caused the alarm. See ALARM
DESCRIPTIONS under SERVICE DATA for more information. To reset , press this
button. This is also referred to as a software reset.
TRIP light ( 22 ):
Works in conjunction with the STOP/MONITOR Terminals. The TRIP lamp will glow,
when the condition set with the TIMER SETUP , STOP/MONITOR Mode is met.