ABB Relion 670 Series Applications Manual page 191

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1MRK 511 401-UEN Rev. K

IEC05000465 V2 EN-US

Figure 90: Typical connection for STBPTOC in 1½-breaker arrangement.

Setting guidelines

The parameters for Stub protection STBPTOC are set via the local HMI or PCM600.

The following settings can be done for the stub protection.

GlobalBaseSel : Selects the global base value group used by the function to define IBase , UBase

SBase . Note that this function will only use IBase value.

Operation : Off / On

ReleaseMode : This parameter can be set Release or Continuous . With the Release setting the

function is only active when a binary release signal RELEASE into the function is activated. This

signal is normally taken from an auxiliary contact (normally closed) of the line disconnector

and connected to a binary input RELEASE of the IED. With the setting

is activated independent of presence of any external release signal.

I> : Current level for the Stub protection, set in % of IBase . This parameter should be set so that

all faults on the stub can be detected. The setting should thus be based on fault calculations.

t : Time delay of the operation. Normally the function shall be instantaneous.

Pole discordance protection CCPDSC

Bay control REC670

Application manual

Current protection

Continuous the function

IP14516-1 v5

Relion rec670