Check The Undervoltage Block Function; Check The Upper And Lower Busbar Voltage Limit - ABB RER670 Commissioning Manual

1MRK 506 377-UEN C
10.9.4.4
10.9.4.5
Railway application RER670 2.2 IEC
Commissioning manual
Testing functionality by secondary injection
binary output for a raise pulse command in the Signal Matrix in PCM600 and
monitoring a positive from this output.
4. After the issue of the raise command, return the applied voltage to USet
(nominal value).
5. Raise the voltage 1% above the upper deadband limit U2 and wait for the
issue of a lower command from the voltage control after the expiry of a
constant or inverse time delay set by t1. Detection of this command will
involve locating the allocated binary output for a low pulse command in the
Signal Matrix in PCM600 and monitoring a positive from this output.
6. Return the applied voltage to USet.

Check the undervoltage block function

1. Confirm the setting for Ublock, nominally at 80% of rated voltage.
2. Confirm the voltage control function response to an applied voltage below
Ublock, by reviewing the setting in the local HMI under Main menu/
Settings/IED Settings/Control/TransformerVoltageControl(ATCC,90)/
TR1ATCC:x/TR8ATCC:x/UVBk that may cause an alarm, total or
automatic block of the voltage control function to be displayed on the local
HMI.
3. Apply a voltage slightly below Ublock and confirm the response of the
voltage control function.

Check the upper and lower busbar voltage limit

1. Confirm the settings for Umin and Umax in the local HMI under Main menu/
Settings/IED Settings/Control/TransformerVoltageControl(ATCC,90)/
TR1ATCC:x/TR8ATCC:x/Voltage/Umax or Umin and Main menu/
Settings/IED Settings/Control/TR8ATCC (90)/TR8ATCC:n/Voltage/
Umax
2. Confirm the voltage control function response to an applied voltage below
Umin and above Umax, by reviewing the settings in the local HMI under
Main menu/Settings/IED Settings/Control/
TransformerVoltageControl(ATCC,90)/TR1ATCC:x/TR8ATCC:x/
UVPartBk and Main menu/IED Settings/Control/
TransformerVoltageControl/TR1ATCC:x/TR8ATCC:x/OVPartBk. These
conditions may cause an alarm or total block of the voltage control function
to be displayed on the local HMI.
3. Decrease the injected voltage slightly below the Umin value and check for the
corresponding blocking or alarm condition on the local HMI. For an alarm
condition, the voltage regulation function is not blocked and a raise command
should be issued from the IED.
4. Increase the applied voltage slightly above the Umax value and check for the
corresponding blocking or alarm condition on the local HMI. For an alarm
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