Toshiba GR200 Series Instruction Manual page 67

DIFGL#1
DIFG
&
Σ|I |≥2
pu
01
≥1 1
Σ|I |≥2
pu
02
DIFGL#2
DIFG
&
Σ|I |≥2
pu
01
≥1 1
Σ|I |≥2
pu
02
DIFGL-EN On
From TFC
8000001B61
TFC.DIFGL_OP
From Fail-safe
DIFGLFS_OP
From DIFL
DIFL-CTF_DETECT
Off
DIFGL-CTFBlk
Block
800000EBB0 DIFGL-TP_BLOCK
8F0000EBB2 DIFGL_BLOCK
800000EBB3 DIFGL-INST_OP
810000EBB4 DIFGL-ARCBLOCK
DIFGL-ARCBlk
Block
Figure 2.3-3 Generation of trip signal in the DIFGL function
†Note: The TRC function is discussed separately. See
circuit
.
Trip mode
(iv)
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.
Operation switch
(v)
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
Setting for autoreclose function
(vi)
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
Relay application: Autoreclose function
Chapter
8000001C23
≥1
& &
≥1 ≥1
8000001BB0
≥1
8F00001BB2
8000001BB3
8100001BB4
≥1
Relay application: Communication application (COMM_APPL)
- 44 -
TDIFGL
t 0
&
≥1
0.00 to 300.00s
&
Chapter Relay application: Trip
)
6F2S1914 (0.49)
To TRC
8000001B23
DIFGL-TRIP
8000001B60
&
DIFGL-ARC-BLOCK
.
GRL200 (Soft 033 & 037)