ABB Relion 670 Series Applications Manual page 196

Hide thumbs Also See for Relion 670 Series:

Table of Contents

Current protection

ANSI05000465 V2 EN-US

Figure 89: Typical connection for STBPTOC (50STB) in breaker-and-a-half arrangement.

Setting guidelines

The parameters for Stub protection STBPTOC (50STB) 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 , VBase and

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

Operation : Disabled / Enabled

EnableMode : This parameter can be set Enable or Continuous . With the Enable setting the function

is only active when a binary release signal ENABLE 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 ENABLE of the IED. With the setting

independent of presence of any external release signal.

IPickup : 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 discrepancy protection CCPDSC(52PD)

Continuous the function is activated

1MRK 511 401-UUS F

IP14516-1 v5

Bay control REC670

Application manual