Checking The Analog Inputs (Cts); Checking The Analog Inputs (Vts); Checking The Binary Input Signals (Optocoupler Inputs) - ABB REB500 Commissioning Manual

1MRK 505 351-UEN
2.2.4
2.2.5
2.2.6
Commissioning Manual
Distributed busbar protection REB500

Checking the analog inputs (CTs)

Using a test set, inject a secondary current into each of the CT inputs.
The CT connections can be checked in one of the following ways:
·
Reading the injected currents on the local HMI
(Note: The readings are referred to the primary values.)
·
Reading the injected currents via HMI500 by selecting "Analog input
measurements" in the "View" menu
·
Reading the injected currents via HMI500 by selecting "Protection zone
measurements" in the "View" menu
·
Reading the injected currents via HMI500 by selecting "Single-line
diagram"
·
Increasing the currents until a protection function picks up.

Checking the analog inputs (VTs)

Using a test set, inject a secondary voltage into each of the voltage transformer
inputs.
The checks can be executed in different ways:
·
Reading the injected currents on the local HMI
·
Reading the injected currents via HMI500 by selecting "Analog input
measurements" in the "View" menu.
Primary values of phase-to-neutral voltages are displayed.

Checking the binary input signals (optocoupler inputs)

Check the proper function of every binary optocoupler input by exciting the signal
source.
The binary inputs can be checked in one of the following ways:
·
Reading the status on the local HMI
Section 2
Commissioning
9