Toshiba GRL150-100 Series Instruction Manual page 76

Line differential relay
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When the GRL150 is operating normally, the green "IN SERVICE" LED is lit and the LCD is
off.
Press the VIEW key when the LCD is off, the LCD will display the "Indication", "Metering1",
"Metering2", "Metering3", "Metering4", "Metering5", ......, "Latest fault", "Auto-supervision"
and "Alarm Display" screens in turn. The last three screens are displayed only when there is
some data. These are the digest screens and can be displayed without entering the menu screens.
Press the RESET key to turn off the LCD.
For any display, the back-light is automatically turned off after five minutes.
Indication
This screen shows the status of elements assigned as a virtual LED.
I N D 1 [ 0 0 0 0
I N D 2 [ 0 0 0 1
Displays in tripping
Latest fault
P h a s e
O C 1
If a fault occurs and a tripping command is output when the LCD is off, the red "TRIP" LED and
other configurable LED if signals assigned to trigger by tripping
Press the VIEW key to scroll the LCD screen to read the rest of messages.
Press the RESET key to turn off the LEDs and LCD display.
Notes:
1) When configurable LEDs (LED1 through LED3) are assigned to latch signals by trigger of
tripping, press the
off the configurable LEDs. Refer to Table 4.2.1 Step 1.
2) Then, press the
turning off the "TRIP" LED. Refer to Table 4.2.1 Step 2.
3) When only the "TRIP" LED is go off by pressing the
RESET
key again to reset remained LEDs in the manner 1) on the "Latest fault" screen or
other digest screens. LED1 through LED3 will remain lit in case the assigned signals are still
active state.
0 0 0 0 ]
0 0 0 0 ]
Status of element,
Elements depend on user setting. 1: Operate, 0: Not operate (Reset)
A B C
RESET
key more than 3s until the LCD screens relight. Confirm turning
RESET
key again on the "Latest fault" screen in short period, confirm
75
: Faulted phases
: Tripping element
RESET
key in short period, press the
6 F 2 S 0 8 2 8

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Grl150-400 seriesGrl150-100a-10-10

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