Technical Data; Breaker Failure Protection Ccrbrf; Identification; Functionality - ABB RED650 Technical Manual

Section 8
Current protection
8.5.8
8.6
8.6.1
8.6.2
212

Technical data

Table 100: LCPTTR/LFPTTR technical data
Function
Reference current
Reference temperature
Operate time:
é
ê
-
2
I I
ê
= t
t ln
ê -
T
2 - 2 - Trip
I I
ê
p
ë T
EQUATION13000039 V2 EN-US
T = set operate temperature
Trip
T = ambient temperature
Amb
T = temperature rise above ambient at I
ref
I = reference load current
ref
I = actual measured current
I = load current before overload occurs
p
Alarm temperature
Operate temperature
Reset level temperature

Breaker failure protection CCRBRF

Identification

Function description
Breaker failure protection, 3-phase
activation and output

Functionality

Breaker failure protection (CCRBRF) ensures a fast backup tripping of the
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.
Range or value
(2-400)% of IBase
(0-300)°C, (0 - 600)°F
Time constant t = (1–1000)
minutes
ù
ú
2
ú
p
ú
T
Amb × 2
I
ú
ref
û
ref
(Equation 34)
ref
(0-200)°C, (0-400)°F
(0-300)°C, (0-600)°F
(0-300)°C, (0-600)°F
IEC 61850
identification
CCRBRF
1MRK 505 394-UEN A
Accuracy
±1.0% of I
±1.0°C, ±2.0°F
IEC 60255-149,
±5.0% or ±200
ms whichever is
greater
±2.0°C, ±4.0°F
±2.0°C, ±4.0°F
±2.0°C, ±4.0°F
IEC 60617 ANSI/IEEE C37.2
identification device number
50BF
3I>BF
SYMBOL-U V1 EN-US
Line differential protection RED650 2.2 IEC
Technical manual
M12352-1 v14
r
IP14514-1 v6
M14878-1 v5
M11550-6 v17