ABB Relion 670 series - Page 565

PID-3479-OUTPUTSIGNALS v5
Table 293: BRCPTOC (46) Output signals
Name Type Description
TRIP BOOLEAN Operate signal of the protection logic
PICKUP BOOLEAN Pickup signal of the protection logic
8.13.5 Settings
PID-3479-SETTINGS v5
Table 294: BRCPTOC (46) Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Operation Disabled/Enabled
Pickup_ub 50 - 90 %IM 1 50 Highest and lowest phase currents
difference in % of highest phase current
Pickup_PH 5 - 100 %IB 1 20 Minimum phase current for operation of
Iub> in % of IBase
tOper 0.000 - 60.000 s 0.001 5.000 Operate time delay
Table 295: BRCPTOC (46) Group settings (advanced)
Name Values (Range) Unit Step Default Description
tReset 0.010 - 60.000 s 0.001 0.100 Time delay in reset
Table 296: BRCPTOC (46) Non group settings (basic)
Name Values (Range) Unit Step Default Description
GlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global Base Value
groups
8.13.6 Monitored data
PID-3479-MONITOREDDATA v4
Table 297: BRCPTOC (46) Monitored data
Name Type Values (Range) Unit Description
IUNBAL REAL - - Measured unbalance of phase currents
8.13.7 Operation principle
SEMOD171791-5 v5
Broken conductor check (BRCPTOC, 46) detects a broken conductor condition by detecting the
asymmetry between currents in the three phases. The current-measuring elements continuously
measure the three-phase currents.
The current asymmetry signal output PICKUP is set on if:
1MRK 502 066-UUS B Section 8
Current protection
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Technical manual