ABB RET670 Product Manual page 22

Transformer protection RET670
Pre-configured
Product version: 1.1
sufficient length, as well as all functionality
necessary for correct co-operation with
autoreclosing functions.
The trip function block includes functionality
for evolving faults and breaker lock-out.
Trip matrix logic TMAGGIO
Trip matrix logic (TMAGGIO) function is
used to route trip signals and/or other logical
output signals to different output contacts on
the IED.
TMAGGIO output signals and the physical
outputs are available in PCM600 and this
allows the user to adapt the signals to the
physical tripping outputs according to the
specific application needs.
Configurable logic blocks
A number of logic blocks and timers are
available for user to adapt the configuration
to the specific application needs.
• OR function block.
• INVERTER function blocks that inverts the
input signal.
• PULSETIMER function block can be used,
for example, for pulse extensions or
limiting of operation of outputs.
• GATE function block is used for controlling
if a signal should be able to pass from the
input to the output or not depending on a
setting.
• XOR function block.
• LOOPDELAY function block used to delay
the output signal one execution cycle.
• TIMERSET function has pick-up and drop-
out delayed outputs related to the input
signal. The timer has a settable time delay.
• AND function block.
• SRMEMORY function block is a flip-flop
that can set or reset an output from two
inputs respectively. Each block has two
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1MRK 504 091-BEN B
outputs where one is inverted. The memory
setting controls if the block after a power
interruption should return to the state
before the interruption, or be reset. Set
input has priority.
• RSMEMORY function block is a flip-flop
that can reset or set an output from two
inputs respectively. Each block has two
outputs where one is inverted. The memory
setting controls if the block after a power
interruption should return to the state
before the interruption, or be reset. Reset
input has priority.
Fixed signal function block
The Fixed signals function (FXDSIGN)
generates a number of pre-set (fixed) signals
that can be used in the configuration of an
IED, either for forcing the unused inputs in
other function blocks to a certain level/value,
or for creating a certain logic.
Monitoring
Measurements
The service value function is used to get on-
line information from the IED. These service
values makes it possible to display on-line
information on the local HMI and on the
Substation automation system about:
• measured voltages, currents, frequency,
active, reactive and apparent power and
power factor
• the primary and secondary phasors
• differential currents, bias currents
• positive, negative and zero sequence
currents and voltages
• mA, input currents
• pulse counters
• event counters
• measured values and other information
of the different parameters for included
functions
• logical values of all binary in- and
outputs and
• general IED information.
Issued: June 2010
ABB