Technical Data - ABB REC650 ANSI Technical Manual

Section 6
Current protection
6.10.8
152
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.
TEST
TEST-ACTIVE
Block BRCPTOC=Yes
BLOCK
Unsymmetrical
Current Detection
PU_N
IA<50%
Pickup_PH
IB<50%
Pickup_PH
IC<50%
Pickup_PH
ANSI09000158 V3 EN
Figure 63: Simplified logic diagram for Broken conductor check BRCPTOC (46)

Technical data

Table 90: BRCPTOC (46) technical data
Function
Minimum phase current for operation
Unbalance current operation
Timer
Trip time for pickup function
Reset time for pickup function
Critical impulse time
Impulse margin time
AND
Function Enable
OR
OR
Range or value
IBase
(5–100)% of
(50-90)% of maximum current
(0.00-60.000) s
35 ms typically
30 ms typically
15 ms typically
10 ms typically
1MRK 511 287-UUS A
AND 0-t
0
ANSI09000158-3-en.vsd
Accuracy
± 1.0% of I
± 2.0% of I
± 0.5% ± 25 ms
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Technical manual
PICKUP
TRIP
n
n