Features - ABB ETL600 Instruction Manual

ABB Switzerland Ltd
number of required inputs/outputs and the HMI600 will first check the
possibility of using the selected modules and then allocates the
positions for them.
Commands of the two TPE can not be mixed on the same
teleprotection interface type G4AI, i.e. there is at least one G4AI
module necessary for each of the two possible TPE. The tabs of the
HMI600 user interface software for configuration of the teleprotection
interfaces G4AI are correspondingly assigned as "G4AI – TPE1" and
"G4AI – TPE2".
3.6.4.

Features

•
Modular design
Appropriate grouping of the functions into the signal processing
module and protection interface modules. The teleprotection
interface type G4AI is inserted into the rack type P7LC of the
ETL600 PLC equipment.
Two individual NSD600 teleprotection equipment are configurable
in the APLC and DPLC channels of the ETL600 system.
•
Advanced technology, digital signal processing
High equipment availability and reliability due to carefully selected
components which have passed rigorous qualification tests.
Using digital signal processing technologies, the NSD600 meets
the stringent requirements for command transmission over PLC
links even under adverse channel conditions. Algorithms optimized
for PLC channels ensure safe and reliable operation as well as
short transmission times even under extremely difficult conditions.
•
Up to 4 independent commands per NSD600
Duplex transmission of permissive tripping or blocking commands
and direct transfer tripping commands in protection schemes for
single or dual circuit lines including breaker failure protection.
In its minimum configuration with one teleprotection interface type
G4AI, the NSD600 can convey up to four independent commands.
•
Versatile application
The four commands of the NSD600 can individually be configured
for direct transfer tripping, for blocking or for permissive tripping
schemes. Due to a patented dynamic adaptation, the command
signals are received at the remote end in the shortest possible
time, even if the channel is disturbed.
Adaptive algorithms especially developed for this type of
teleprotection equipment adjust themselves continuously to the
prevailing channel conditions and achieve even under worst-case
conditions the high degree of security against loss of genuine,
respectively acceptance of false tripping commands.
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1KHW001489-EN
November 2005
ETL600
Structure and Function