The output trip signal TRIP is a three-phase trip. It can be used to command a trip to the
circuit breaker or for alarm purpose only.
BLOCK
Function Enable
TEST-ACTIVE
AND
TEST
Block BRCPTOC=Yes
OR
PU_N
AND
Unsymmetrical
Current Detection
PICKUP
IA<50%Pickup_PH
IB<50%Pickup_PH
IC<50%Pickup_PH
ANSI09000158-3-en.vsd
OR
TRIP
0
0-t
ANSI09000158 V3 EN
Figure 63: Simplified logic diagram for Broken conductor check BRCPTOC (46)
6.10.8 Technical data
Table 90: BRCPTOC (46) technical data
Function
Range or value Accuracy
Minimum phase current for operation (5–100)% of
IBase
± 1.0% of I
n
Unbalance current operation (50-90)% of maximum current ± 2.0% of I
n
Timer (0.00-60.000) s ± 0.5% ± 25 ms
Trip time for pickup function 35 ms typically -
Reset time for pickup function 30 ms typically -
Critical impulse time 15 ms typically -
Impulse margin time 10 ms typically -
Section 6 1MRK 511 287-UUS A
Current protection
152
Technical manual
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