Toshiba GR200 Series Instruction Manual page 343

†Note: For more information of the trip circuit, see Chapter
circuit
Execution of OVG function
(iii)
Set On for scheme switch [OVG1-EN]. Otherwise, set Off for the scheme switch [OVG1-EN] if
the OVG1 element is not required to operate.
Scheme logic
2.23.5
Figure 2.23-4 shows the OVG function logic. Signal connection points "OVG*_BLOCK" are
provided for the block of the operation of the OV elements. For testing, the OVG1-PU element
is provided; it generates a pick-up signal when the entering voltage is excesses of the threshold
anytime. Thereby, in the IDMT characteristic, using both monitoring points "8000011C23" and
"8000011C27" can facilitate to measure the pickup time after the excess.
8000011C23
OVG1
8000011C27
OVG1 PU
OVG1-EN On
VTF_DETECT
&
OVG1-VTFBlk
OV1-VTFBlk
CB_LOSS_PHASE
OVG1-BLOCK
DT
IDMT
OVG1-Timer
Original
OVG2 logic
.
&
&
≥1
1
≥1
OVG1-UseFor
OVG2-OPT-TRIP
OVG2-OPT-ALARM
OVG2-OPT
Figure 2.23-4 OVG function logics
- 320 -
TOVG1
8000011B60
t 0
& ≥1
0.00-300.00s
&
8000011B23
&
Trip 8100021B61
Alarm
&
8000021B23
8100021B61
8100021B60
6F2S1914 (0.49)
Relay application: Trip
OVG1-OPT
8300011B23
≥1
OVG-OPT-TRIP
8400001B61
OVG-OPT-ALARM
≥1
OVG-ARC-BLOCK
GRL200 (Soft 033 & 037)