Trip Blocking - Toshiba GRL100-701B Instruction Manual

(1) There are various messages such as "
(2) The LED is on when the scheme switch [SVCNT] is set to "ALM", and off when "ALM &
BLK" (refer to Section 3.3.11).
(3) Whether the LED is lit or not depends on the degree of voltage drop.
(4) The binary output relay "FAIL" will operate.
(5) User-configurable binary output relay will operate if the supervision function and signal
applied.
(6) The LED is on when the scheme switch [IDSV] is set to "ALM", and off when "ALM & BLK".
(7) The LED is on when the scheme switch [CTSV] is set to "ALM", and off when "ALM & BLK".
(8) The LED is on if the signals is assigned and the scheme switch [CTFEN] / [VTFEN] is set to
"On" or "OPT-On".

3.3.12 Trip Blocking

When a failure is detected by the following supervision items, the trip function is blocked as long
as the failure exists and is restored when the failure is removed:
• A/D accuracy checking
• Memory monitoring
• Watch Dog Timer
• DC supply monitoring
• Telecommunication channel monitoring
When a failure is detected by AC input imbalance monitoring, CT circuit current monitoring or
differential current monitoring, the scheme switch [SVCNT], [CTSV] or [IDSV] setting can be
used to determine if both tripping is blocked and an alarm is output, or, if only an alarm is output.
The CT circuit current monitoring and the differential current monitoring can be disabled by the
[CTSV] and [IDSV] respectively.
3.3.13 Setting
The setting elements necessary for the automatic supervision and their setting ranges are shown
in the table below.
Element Range
0.25 − 10.00A
DIFSV
(0.05 − 2.00A
TIDSV 0 – 60s
RYID 0-63
RYID1 0-63
RYID2 0-63
[IDSV] OFF/ALM&BLK/ALM
[RYIDSV] OFF/ON
[LSSV] ON/OFF
[SVCNT] ALM&BLK/ALM
[CTSV] OFF/ALM&BLK/ALM
(∗) Current values shown in parentheses are in the case of 1A rating. Other current values are in the
case of 5A rating.
For setting method, see Section 2.2.12. For the setting range of CT circuit failure detection, see
section 3.3.4.
⋅⋅⋅ ⋅⋅⋅
err" and " fail" as shown in the table in Section 6.7.2.
Step Default Remarks
0.01A 0.50A Differential current supervision
0.01A
0.10A) (∗)
1s 10s Detected time setting
0 Local relay address
0 Remote 1 relay address
0 Remote 2 relay address
OFF Differential current supervision
ON Relay address supervision
OFF Disconnector monitoring
ALM&BLK Alarming and/or blocking
OFF CT circuit monitoring
 180 
6 F 2 S 0 8 5 0