Setting Guidelines - ABB REC670 Applications Manual

Section 8
Current protection
8.11.3
8.12
8.12.1
202

Setting guidelines

The parameters for the Pole discordance protection CCPDSC are set via the local
HMI or PCM600.
The following settings can be done for the pole discordance protection.
GlobalBaseSel: Selects the global base value group used by the function to define
IBase, UBase and SBase as applicable.
Operation: Off or On
tTrip: Time delay of the operation.
ContSel: Operation of the contact based pole discordance protection. Can be set:
Off/PD signal from CB. If PD signal from CB is chosen the logic to detect pole
discordance is made in the vicinity to the breaker auxiliary contacts and only one
signal is connected to the pole discordance function. If the Pole pos aux cont.
alternative is chosen each open close signal is connected to the IED and the logic to
detect pole discordance is realized within the function itself.
CurrSel: Operation of the current based pole discordance protection. Can be set:
Off/CB oper monitor/Continuous monitor. In the alternative CB oper monitor the
function is activated only directly in connection to breaker open or close command
(during 200 ms). In the alternative Continuous monitor function is continuously
activated.
CurrUnsymLevel: Unsymmetrical magnitude of lowest phase current compared to
the highest, set in % of the highest phase current. Natural difference between phase
currents in 1 1/2 breaker installations must be considered. For circuit breakers in 1
1/2 breaker configured switch yards there might be natural unbalance currents
through the breaker. This is due to the existence of low impedance current paths in
the switch yard. This phenomenon must be considered in the setting of the
parameter.
CurrRelLevel: Current magnitude for release of the function in % of IBase.
Directional underpower protection GUPPDUP
Identification
Function description
Directional underpower protection
IEC 61850 IEC 60617
identification identification
GUPPDUP
P <
2
SYMBOL-LL V2 EN-US
1MRK 511 401-UEN A
M13274-3 v8
SEMOD156693-1 v4
SEMOD158941-2 v4
ANSI/IEEE C37.2
device number
37
Bay control REC670 2.2 IEC
Application manual