Toshiba GRZ100 B Series, Instruction Manual, Page: 256 / 447

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6 F 2 S 0 8 4 6
Note:
In these tests it is recommended to block the tripping circuit to prevent false tripping.
6.6.3 Tripping and Reclosing Circuit Test
The tripping and reclosing circuit including the circuit breaker is checked by forcibly operating
the output relay and monitoring the circuit breaker to confirm that it is tripped or reclosed.
Forcible operation of the output relay is performed on the "Binary output" screen of the "Test"
sub-menu as described in Section 6.4.3.
Tripping circuit
•
Set the breaker to be closed.
•
Press 3 (= Binary output) on the "Test" sub-menu screen to display the "Binary output" screen.
The LCD displays the output modules mounted.
•
Enter 1 to select the IO#1 module, then the LCD displays the screen shown below.
/ 3 B O ( 0 = D i s a b l e 1 = E n a b l e ) 1 / 3
I O #
T P -
0
I O # 0
I O # 0
B 1
T P - A 1
T P - C 1
1
1
1
TP-A1, B1 and C1 are output relays with one normally open contact, and trip the A-phase,
B-phase and C-phase circuit breakers.
•
Enter 1 for TP-A1 and press the ENTER key.
•
Press the END key. Then the LCD displays the screen shown below.
/ 3 B O
K e e p p r e s s 1 o o p e r a t e .
C A N C E
t o c a n c e l .
L
P r e s s
n i g t
•
Keep pressing the 1 key to operate the output relay TP-A1 and check that the A-phase
breaker is tripped.
•
Release the 1 key to reset the operation.
•
Repeat the above for all the phases.
Reclosing circuit
The test is applied to the autoreclose function if used.
•
Ensure that the circuit breaker is open.
•
Press 3 (= Binary output) on the "Test" sub-menu screen to display the "Binary output" screen.
The LCD displays the output modules mounted.
•
Enter the selected number corresponding to each module to be operated. The LCD will display
the name of the module, the name of the output relay, the name of the terminal block and the
terminal number to which the relay contact is connected.
Note:
The autoreclose command is assigned to any of the output relays by the user setting. The
following description is the case for the default setting of model 201.
In the default setting, the autoreclose command is set to BO10 of the IO#2 module.