Pole Discordance Protection Ccpdsc; Identification; Functionality - ABB RED650 Technical Manual

1MRK 505 394-UEN A
8.7
8.7.1
8.7.2
Line differential protection RED650 2.2 IEC
Technical manual
Function
Time delay for re-trip at 0 to 2 x I
Time delay for back-up trip at 0 to 2 x I
Time delay for back-up trip at multi-phase start at
0 to 2 x I
set
Additional time delay for a second back-up trip at
0 to 2 x I
set
Time delay for alarm for faulty circuit breaker

Pole discordance protection CCPDSC

Identification

Function description
Pole discordance protection

Functionality

An open phase can cause negative and zero sequence currents which cause thermal
stress on rotating machines and can cause unwanted operation of zero sequence or
negative sequence current functions.
Normally the own breaker is tripped to correct such a situation. If the situation
persists the surrounding breakers should be tripped to clear the unsymmetrical load
situation.
The Pole discordance protection function (CCPDSC) operates based on
information from auxiliary contacts of the circuit breaker for the three phases with
additional criteria from unsymmetrical phase currents when required.
Range or value
(0.000-60.000) s
set
(0.000-60.000) s
set
(0.000-60.000) s
(0.000-60.000) s
(0.000-60.000) s
IEC 61850 IEC 60617
identification identification
CCPDSC
Section 8
Current protection
Accuracy
±0.2% or ±15 ms
whichever is greater
±0.2% or ±15 ms
whichever is greater
±0.2% or ±20 ms
whichever is greater
±0.2% or ±20 ms
whichever is greater
±0.2% or ±15 ms
whichever is greater
ANSI/IEEE C37.2
device number
52PD
PD
SYMBOL-S V1 EN-US
IP14516-1 v5
M14888-1 v4
M13269-3 v15
219