Rev.23
49/311
4.14. Function 50BF. Circuit Breaker opening fault
This function settings are as follows:
Function
Description
Minimum
Maximum
Step
Unit
Default
50BF
Circuit breaker opening fault
Permission
-
-
Yes/No
-
No
Opening fault time
0.02
1.00
0.01
s
0.2
The following automaton describes the open fault function:
When the “50BF Init” status is activated, a switch is made to the "50BF init" and time is counted. If,
following the adjusted open fault time, the switch is not detected to have open, the function trips. The
function is reset when the circuit breaker is detected to have opened, and the “50BF Init” status has
been reset.
To monitor the circuit breaker opening the current measurement via the three phases is used. When the
current via the three phases is less than 8% of the rated current, the circuit breaker is considered to be
open.
There is a “50BF init input” to start the open fault from an external protection.
The “50BF init” status is an adjustable logic output. The default configuration is shown below:
•
Opening fault input activation (50BF init input)
•
Circuit breaker opening from an HMI/local modbus
•
Circuit breaker opening from a remote modbus
•
Circuit breaker opening from remote communications
•
General trip
Run
Pickup
INIT_50BF = 1
Reset
t >
Imax< 8% Inominal
Imax< 8% Inominal
Imax< 8% Inominal
INIT_50BF = 0
50BF
Trip
50BF
50BF
Summary of Contents for SIL B
Page 1: ...EN_FANOXTD_MANU_SIL_Feeder_SILB_R023 Docx USER S MANUAL SIL B Feeder Relay...
Page 8: ...www fanox com Rev 23 8 311 2 DIMENSIONS AND CONNECTION DIAGRAMS 2 1 Equipment front view...
Page 9: ...www fanox com Rev 23 9 311 2 2 Equipment dimensions...
Page 10: ...www fanox com Rev 23 10 311...
Page 11: ...www fanox com Rev 23 11 311 2 3 Cut out pattern CUT OUT PATTERN...
Page 12: ...www fanox com Rev 23 12 311 2 4 Connection diagrams Analog connections...
Page 13: ...www fanox com Rev 23 13 311...
Page 14: ...www fanox com Rev 23 14 311 Digital connections Outputs and Trip circuit supervision...
Page 15: ...www fanox com Rev 23 15 311 2 5 Terminals IEC 61850 or DNP3 0 protocols...
Page 17: ...www fanox com Rev 23 17 311 IEC 60870 5 103 protocol...
Page 25: ...www fanox com Rev 23 25 311 3 3 Functional diagram...
Page 28: ...www fanox com Rev 23 28 311 3 5 1 SIL B 1 CHARGE CURVE 3 5 2 SIL B 5 CHARGE CURVE...
Page 91: ...www fanox com Rev 23 91 311...
Page 140: ...www fanox com Rev 23 140 311...
Page 194: ...www fanox com Rev 23 194 311 Polarization V 35 0 V C Operating Angle 180 C Halfcone Angle 3 C...
Page 307: ...www fanox com Rev 23 307 311 50BF init Fault init 79 Closure permission 52 closure permission...
Page 310: ...www fanox com Rev 23 310 311 NOTES...
Page 311: ...www fanox com Rev 23 311 311...
