1MAC050144-MB C
Section 5
Protection related functions
615 series ANSI
393
Technical Manual
Figure 192:
Typical breaker failure protection scheme in distribution substations
5.2.6
Signals
Table 340: 50BF Input signals
Table 341: 50BF Output signals
Name
Type
Default
Description
I_A
SIGNAL
0
Phase A current
I_B
SIGNAL
0
Phase B current
I_C
SIGNAL
0
Phase C current
I_N
SIGNAL
0
Ground current
BLOCK
BOOLEAN
0=False
Block CBFP operation
PICKUP
BOOLEAN
0=False
CBFP pickup command
POSCLOSE
BOOLEAN
0=False
CB in closed position
CB_FAULT
BOOLEAN
0=False
CB faulty and unable to trip
Name
Type
Description
CB_FAULT_AL
BOOLEAN
Delayed CB failure alarm
TRBU
BOOLEAN
Backup trip
TRRET
BOOLEAN
Retrip
Содержание 615 Series ANSI
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Страница 707: ...Section 15 1MAC050144 MB C Applicable standards and regulations 700 615 series ANSI Technical Manual ...
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