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1MRK 504 165-UEN Rev. K
Reset the counters to zero, if that is the user's preference. The counter reset function is found
on the local HMI under Main menu /Reset /Reset counters /AutoRecloser79,5(0–>1) /
SMBRREC(79,5(0–>1)):x
2.
Restore settings that may have been modified for the tests back to normal.
3.
Disconnect the test switch, circuit breaker simulating arrangement and test circuits.
Reconnect any links or connection terminals, which may have been opened for the tests.
4.
Reset indications, alarms and disturbance recordings.
Clearing of the disturbance report can be done via the Disturbance Handling in PCM600 or the
local HMI.
11.11.2.5
Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
11.11.3
Apparatus control APC
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.
11.11.4
Function revision history
11.11.5
Voltage control TR1ATCC, TR8ATCC, TCMYLTC, TCLYLTC
Prepare the IED for verification of settings as outlined in section
section
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
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.
Transformer protection RET670
Commissioning manual
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.
"Preparing for test"
in this chapter.
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) and secondary bus voltage (U
L
Testing functionality by secondary injection
GUID-CC62CA75-201A-4C5D-9FD4-89DBFD56F97C v2
"Requirements"
and
) equivalent quantities are
B
Section 11
M12400-218 v5
M13385-2 v8
SEMOD175185-3 v13
241
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