ABB REC650 - Technical Data; Breaker Failure Protection 3-Phase Activation and Output CCRBRF; Identification; Functionality

6.6.8 Technical data
Table 65: LCPTTR/LFPTTRtechnical data
Function
Range or value Accuracy
Reference current (0-400)% of IBase
± 1.0% of I
r
Reference temperature (0-300)°C, (0 - 600)°F
± 2.0°C, ±2.0°F
Operate time:
2 2
2 2
p
ref
I I
t ln
I I
t
æ ö
-
ç ÷
= ×
ç ÷
-
è ø
EQUATION1356 V2 EN (Equation 20)
I = actual measured current
I
p
= load current before overload
occurs
I
ref
= reference load current
Time constant t = (0–1000) minutes
IEC 60255-8, ±5% + 200
ms
Alarm temperature (0-200)°C, (0-400)°F
± 2.0°C
± 2.0°F
Trip temperature (0-300)°C, (0-600)°F
± 2.0°C
± 2.0°F
Reset level temperature (0-300)°C, (0-600)°F
± 2.0°C
± 2.0°F
6.7 Breaker failure protection 3-phase activation and
output CCRBRF
6.7.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Breaker failure protection, 3-phase
activation and output
CCRBRF
3I>BF
SYMBOL-U V1 EN
50BF
6.7.2 Functionality
CCRBRF can be current based, contact based, or an adaptive combination of these two
conditions.
Breaker failure protection, 3-phase activation and output (CCRBRF) ensures fast
back-up tripping of surrounding breakers in case the own breaker fails to open.
CCRBRF can be current based, contact based, or an adaptive combination of these two
conditions.
Section 6 1MRK 511 287-UEN A
Current protection
128
Technical manual