ABB RELION 650 SERIES, Technical Manual

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Function Range or value Accuracy
Time delay for re-trip at 0 to 2 x I
set
(0.000-60.000) s ±0.2% or ±15 ms
whichever is greater
Time delay for back-up trip at 0 to 2 x I
set
(0.000-60.000) s ±0.2% or ±15 ms
whichever is greater
Time delay for back-up trip at multi-phase start at
0 to 2 x I
set
(0.000-60.000) s ±0.2% or ±20 ms
whichever is greater
Additional time delay for a second back-up trip at
0 to 2 x I
set
(0.000-60.000) s ±0.2% or ±20 ms
whichever is greater
Time delay for alarm for faulty circuit breaker (0.000-60.000) s ±0.2% or ±15 ms
whichever is greater
7.9 Pole discordance protection CCPDSC
IP14516-1 v5
7.9.1 Identification
M14888-1 v4
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Pole discordance protection CCPDSC
PD
SYMBOL-S V1 EN-US
52PD
7.9.2 Functionality
M13269-3 v15
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.
1MRK 506 382-UEN A
Section 7
Current protection
Line distance protection REL650 2.2 IEC 245
Technical manual