Daiichi Electronics SMLC-110L Instruction Manual page 13

② Ground fault phase detection display
The maximum zero-phase voltage and the minimum phase voltage of each phase are displayed. (Display-element fixation)
It is possible to distinguish the ground fault phase at the case of ground fault occurrence by displaying these
measurement values. As for this display, power supply reset is also held. And, each maximum value and the minimum
value are always updated by the newest value. However, about line voltage input product, a phase voltage is OFF.
The change by switch operation and the automatic change at the case of the ground fault detection by setup are
possible for the change to this display.
The change to this display has the next method. The change by switch operation, and the automatic change at the
case of the ground fault detection by setup.
In addition, in case a backlight setup changes to a ground fault phase detection display automatically by ground
fault detection by "OFF", backlight turn on the lights at the same time a screen is changed. (After that, in case
it does not operate it for 5 minutes, backlight goes out.)
Please refer to "4.3.3 Ground fault phase detection display change" about switch operation. And about the automatic
change setting method, please refer to " 5.3.1 setting mode 1 (4) zero-phase voltage detection setting".
Ground fault phase detection display
Instantaneous measurement display
MAX/MIN
Maximum, minimum measurement display
Zero-phase <零相> is display
Maximum zero-phase voltage
Minimum V(SN)
Minimum V(TN)
Minimum V(RN)
MODE
Ground-fault
detection
MODE
Ground-fault
detection
Switching of a measurement element
is possible of ＋ or － switch.
Ground fault phase detection display
・Display element
Main monitor
Sub-monitor (Left)
Sub-monitor (Center) Minimum V(SN) <最小>
Sub-monitor (Right)
Each minimum phase voltage of a line voltage input
product is OFF.
Maximum zero-phase voltages and minimum voltage
update a value.
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SMLC-213-154
In a
ground-fault
phase
detection
display, it
Backlight
lighting (At
the case of
an automatic
turn off the
lights
setting)
Maximum zero-phase voltage
<最大零相>
Minimum V(RN) <最小>
Minimum V(TN) <最小>