Further, the IED offers one control block which is
intended for motor-operated control of one
earthing switch control and its position indication.
Two physical binary inputs and two physical
binary outputs are needed in the IED for each
controllable primary device taken into use.
Depending on the chosen standard configuration
of the IED the number of unused binary inputs
and binary outputs varies. Further, some standard
configurations also offer optional hardware
modules that increase the number of available
binary inputs and outputs. The amount of binary
inputs and binary outputs freely available per
standard configuration in RED615 is listed in the
table below.
Table 4. Number of controllable objects in addition to CB
Standard
configurations
Optional Binary I/O
module
Free BI
Free SO
Controllable objects in
addition to CB
A
-
1
1
0
●
7
4
2
B
-
0
1
0
●
6
4
2
C
-
0
1
0
●
6
4
2
In case the amount of available binary inputs and/
or outputs of the chosen standard configuration is
not sufficient, the following alternatives are
recommended:
• To modify the chosen standard configuration of
the IED in order to release some binary inputs
or binary outputs which have originally been
configured for other purposes, when applicable.
• To integrate an external input or output module
for example, RIO600 to the IED. The binary
inputs and outputs of the external I/O module
can be used for the less time critical binary
signals of the application. The integration
enables releasing of some initially reserved
binary inputs and outputs of the IED in the
standard configuration.
The suitability of the binary outputs of the IED
which have been selected for controlling of
primary devices should be carefully verified, for
example the make and carry as well as the
breaking capacity. In case the requirements for
the control-circuit of the primary device are not
met, the use of external auxiliary relays should to
be considered.
The optional large graphical LCD of the IED's HMI
includes a single-line diagram (SLD) with position
indication for the relevant primary devices.
Interlocking schemes required by the application
are configured using the signal matrix or the
application configuration functionality of PCM600.
7. Measurement
The IED continuously measures the phase
currents, the symmetrical components of the
currents and the residual current. If the IED
includes voltage measurements it also measures
the residual voltage. In addition, the IED
calculates the demand value of current over a
user-selectable pre-set time frames, the thermal
overload of the protected object, and the phase
unbalance value based on the ratio between the
negative sequence and positive sequence current.
Further, the IED monitors the phase differential,
bias and remote end phase currents.
The values measured can be accessed locally via
the user interface on the IED front panel or
remotely via the communication interface of the
IED. The values can also be accessed locally or
remotely using the web-browser based user
interface.
Line Differential Protection and Control
1MRS756500 F
RED615
Product version: 4.0
16
ABB
Summary of Contents for RED615 ANSI
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