ABB RER670 - Completing the Test; Apparatus Control APC; Tap Changer Control and Supervision TCMYLTC, TCLYLTC

10.9.2.5 Completing the test
M12400-218 v5
continue to test another function or end the test by changing the TESTMODE
setting to Off. Restore connections and settings to their original values, if they were
changed for testing purposes.
10.9.3 Apparatus control APC
M13385-2 v7
The apparatus control function consists of four types of function blocks, which are
connected in a delivery-specific way between bays and to the station level. For that
reason, test the total function in a system, that is, either in a complete delivery
system as an acceptance test (FAT/SAT) or as parts of that system.
If a block/unblock command is sent from remote to function, while
the IED is shut down, this command will not be recognized after
the start up, thus the command that was sent prior to the shut down
is used. In such cases, where there is a mismatch, the user is
advised to make a complete cycle of block/unblock operations to
align the statuses.
10.9.4 Tap changer control and supervision TCMYLTC, TCLYLTC
SEMOD175185-3 v12
Prepare the IED for verification of settings outlined in Section
"Preparing the IED
to verify settings".
The automatic voltage control for tap changer, single control TR1ATCC is based
on a transformer configuration that consists of one tap changer on a single two-
winding power transformer.
The automatic voltage control for tap changer, parallel control TR8ATCC, if
installed, may be set to operate in Master Follower (MF) mode, or Minimise
Circulating Current (MCC) mode. The commissioning tests for each parallel
control mode are addressed separately in the following procedure.
Secondary injection of load current (I
L
) and secondary bus voltage (U
B
) equivalent
quantities are required during installation and commissioning tests. The test
consists mainly of:
1. Increasing or decreasing the injected voltage or current at the analogue inputs
of the IED.
2. Checking that the corresponding commands (Lower or Raise) are issued by the
voltage control function.
Setting confirmation is an important step for voltage control in the installation and
commissioning phase to ensure consistency of power systems base quantities,
alarm/blocking conditions and parallel control settings for each transformer control
function.
1MRK 506 377-UEN C Section 10
Testing functionality by secondary injection
Railway application RER670 2.2 IEC 141
Commissioning manual