IEC 61850/Function
block name
Function description
ATHCHCK Authority check 1
AUTHMAN Authority management 1
FTPACCS FTPS access with password 1
DOSFRNT Denial of service, frame rate control for front port 1
DOSLAN1 Denial of service, frame rate control for LAN1A and LAN1B ports 1
DOSSCKT Denial of service, socket flow control 1
2.3 REC650 application examples
2.3.1 Adaptation to different applications
The IED has pre-defined configurations mainly for sub-station control applications. There
is however the possibility to integrate back-up protection functions in the IED. In sub-
transmission systems it can be valuable to have another IED for line or transformer
application, giving the main protection functionality and the bay control IED giving
control functionality together with back-up protection.
The IED is available in three different versions:
• A01A: for a single breaker bay connected to single busbar
• A02A: for a single breaker bay connected to double busbar
• A07A: for a bus coupler bay
A selection of common applications are described below.
• Application 1: Single breaker line bay, single or double busbar, in solidly grounded
network
• Application 2: Single breaker line bay, single or double busbar, in high impedance
grounded network
• Application 3: Bus coupler in solidly grounded network
• Application 4: Bus coupler in a high impedance grounded network
2.3.2 Single breaker line bay, single or double busbar, in solidly
grounded network
Normally the following fault scenarios require back-up protection functions:
Section 2 1MRK 511 286-UUS A
Application
32
Application manual
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