With this information, the protection relay's Rogowski sensor settings can be set.
Table 47: Example setting values for rogowski sensor
Setting
Value
Primary current 150 A
Rated secondary value 5.625 mV/Hz
Nominal current 150 A
Unless otherwise specified, the Nominal Current setting should always be
the same as the Primary Current setting.
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 conversions are not needed.
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 Voltage input type is always set to “CVD sensor” and it cannot be changed. The same
applies for the VT connection parameter which is always set to “WYE” type. The division
ratio for ABB voltage sensors is most often 10000:1. Thus, the Division ratio parameter
is usually set to “10000”. The primary voltage is proportionally divided by this division
ratio.
Table 48: Example setting values for voltage sensor
Setting
Value
Primary voltage 10 kV
VT connection Wye
Voltage input type 3=CVD sensor
Division ratio 10000
3.11 Binary input
3.11.1 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 protection relay.
1MAC059074-MB A Section 3
Basic functions
615 series ANSI 105
Technical Manual