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6.10.2
Functionality
Conventional protection functions can not detect the broken conductor condition. Broken
conductor check BRCPTOC (46) function, consisting of continuous phase selective
current unsymmetrical check on the line where the IED is connected will give alarm or trip
at detecting broken conductors.
6.10.3
Function block
ANSI09000277-1-en.vsd
BRCPTOC (46)
I3P*
BLOCK
TRIP
PICKUP
ANSI09000277 V1 EN
Figure 62:
BRCPTOC (46) function block
6.10.4
Signals
Table 85:
BRCPTOC (46) Input signals
Name
Type
Default
Description
I3P
GROUP
SIGNAL
-
Three phase group signal for current inputs
BLOCK
BOOLEAN
0
Block of function
Table 86:
BRCPTOC (46) Output signals
Name
Type
Description
TRIP
BOOLEAN
Operate signal of the protection logic
PICKUP
BOOLEAN
Pickup signal of the protection logic
6.10.5
Settings
Table 87:
BRCPTOC (46) Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Disabled
Enabled
-
-
Disabled
Operation Disable / Enable
Pickup_ub
50 - 90
%IM
1
50
Unbalance current operation value in percent
of max current
Pickup_PH
5 - 100
%IB
1
20
Minimum phase current for operation of
pickup_ub> in % of Ibase
tOper
0.000 - 60.000
s
0.001
5.000
Operate time delay
Section 6
1MRK 511 287-UUS A
Current protection
150
Technical manual
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