Toshiba GR200 Series - (iv) Trip mode; (v) Operation switch; (vi) Setting for autoreclose function

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 44 -
DIFG
≥1
DIFGL-CTFBlk
Off
Block
DIFGL-EN
On
8000001C23
TFC.DIFGL_OP
From TFC
8000001B61
&
DIFGLFS_OP
From Fail-safe
&
DIFL-CTF_DETECT
From DIFL
DIFGL-TP_BLOCK
800000EBB0
8000001BB0
DIFGL-INST_OP
800000EBB3
8000001BB3
≥1
&
0.00 to 300.00s
t 0
TDIFGL
&
≥1
8000001B23
DIFGL-TRIP
DIFGL-ARCBlk
Block
DIFGL-ARCBLOCK
810000EBB4
8100001BB4
≥1
&
8000001B60
DIFGL-ARC-BLOCK
DIFGL_BLOCK
8F0000EBB2
8F00001BB2
≥1
To TRC
≥1
Σ|I
01
|≥2pu
DIFGL#1
Σ|I
02
|≥2pu
≥1
&
1
DIFG
Σ|I
01
|≥2pu
DIFGL#2
Σ|I
02
|≥2pu
≥1
&
1
Figure 2.3-3 Generation of trip signal in the DIFGL function
†Note: The TRC function is discussed separately. See Chapter Relay application: Trip
circuit .
(iv) Trip mode
The trip signal generated in the DIFGL function is a “three-phase trip (DIFGL-TRIP)” singnal.
The “three-phase trip” signal switches off the CB in the three-poles.
(v) Operation switch
The user should set On for scheme switch [DIFGL-EN]† prior to the DIFGL operation; the
scheme switch is also illustrated in Figure 2.3-3.
Note: Also, see Chapter Relay application: Communication application (COMM_APPL) .
(vi) Setting for autoreclose function
When autoreclose function (ARC) is provided together with the DIFGL function, the ARC
function can re-close the CB again after tripping the CB. When the user wishes to operate the
ARC function, the user should set Non for scheme switch [DIFGL-ARCBlk]. On the other hand,
the user wishes to not to operate the ARC function during the DIFGL operation, set Block for
the scheme switch [DIFGL-ARCBlk] so that a block signal “DIFGL-ARC-BLOCK” is generated
and injected to the autoreclose function (ARC). The ARC function is discussed separately. (See
Chapter Relay application: Autoreclose function )