Binary Input; Binary Input Filter Time - ABB RELION SMU615 Technical Manual

1MRS758407 C
the customer specification requirements for overcurrent settings of up to 20
xIn.
Voltage sensor setting example
The voltage sensor is based on the resistive divider or capacitive divider
principle. Therefore, the voltage is linear throughout the whole measuring
range. The output signal is a voltage, directly proportional to the primary
voltage. For the voltage sensor, all parameters are readable directly from its
rating plate and/or sensor routine test protocol, and conversions are not
needed.
Figure 22: Example of ABB voltage sensor KEVA 17.5 B21 rating plate
In this example the system phase-to-phase voltage rating is 10 kV. Thus, the
Primary voltage parameter is set to 10 kV. For protection relays with sensor
measurement support, the
VT connection parameter is set to the "WYE" type. The division ratio for ABB
voltage sensors is most often 10000:1. Thus, the
usually set to "10000". The primary voltage is proportionally divided by this
division ratio.
Table 36: Example setting values for voltage sensor
Setting
Primary voltage
VT connection
Voltage input type
Division ratio
3.8

Binary input

3.8.1

Binary input filter time

The filter time eliminates debounces and short disturbances on a binary input. The
filter time is set for each binary input of the merging unit.
SMU615
Technical Manual
Voltage input type is set to "Voltage sensor". The
Division ratio parameter is
Value
10 kV
Wye
3=Voltage sensor
10000
Basic functions
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