Toshiba GR200 Series - (iii) Execution of OVG function; 2.23.5 Scheme logic

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 320 -
†Note: For more information of the trip circuit, see Chapter Relay application: Trip
circuit .
(iii) Execution of OVG function
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.
2.23.5 Scheme logic
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.
Figure 2.23-4 OVG function logics
Trip
t
0
TOVG1
OVG1-OPT
≥1
&
&
&
0.00-300.00s
8000011B60
OVG1-UseFor
Alarm
OVG2-OPT-TRIP
OVG2-OPT-ALARM
OVG2-OPT
OVG2 logic
8100021B60
8000011B23
&
&
≥1
≥1
8300011B23
8400001B61
OVG-OPT-TRIP
OVG-OPT-ALARM
OVG-ARC-BLOCK
8000021B23
8100021B61
8100021B61
8000011C27
OVG1-EN
On
OVG1-VTFBlk
OV1-VTFBlk
OVG1-BLOCK
OVG1-Timer
Original
VTF_DETECT
IDMT
DT
&
&
≥1
≥1
1
OVG1
OVG1 PU
8000011C23
CB_LOSS_PHASE