Logic; Tripping Logic, Common 3-Phase Output Smpptrc; Three-Phase Operating Mode; 1Ph/3Ph Operating Mode - ABB RET650 2.1 IEC Commissioning Manual

1MRK 504 160-UEN -
10.8
10.8.1
10.8.1.1
10.8.1.2
Transformer protection RET650 2.1 IEC
Commissioning manual
Testing functionality by secondary injection
function (SINGLECMD) is then checked from the local HMI by applying the
commands with Mode = Off, Steady or Pulse, and by observing the logic statuses of
the corresponding binary output. Command control functions included in the
operation of different built-in functions must be tested at the same time as their
corresponding functions.

Logic

Tripping logic, common 3-phase output SMPPTRC

Prepare the IED for verification of settings outlined in section
verify settings".
This function is functionality tested together with other protection functions (line
differential protection,earth-fault overcurrent protection, and so on) within the IED. It
is recommended that the function is tested together with the autorecloser function,
when built into the IED or when a separate external unit is used for reclosing purposes.
The instances of SMPPTRC are identical except for the name of the function block
SMPPTRC. The testing is preferably done in conjunction with the protection system
and autoreclosing function.

Three-phase operating mode

1. Check that AutoLock and TripLockout are both set to Off.
2. Initiate a three-phase fault.
An adequate time interval between the faults should be considered, to overcome
a reclaim time caused by the possible activation of the Autorecloser function
SMBRREC. The function must issue a three-phase trip in all cases, when trip is
initiated by any protection or some other built-in or external function. The
following functional output signals must always appear simultaneously: TRIP,
TRL1, TRL2, TRL3 and TR3P.

1ph/3ph operating mode

In addition to various other tests, the following tests should be performed. They
depend on the complete configuration of an IED:
Procedure
1. Make sure that TripLockout and AutoLock are both set to Off.
2. Initiate different single-phase-to-earth faults one at a time.
Single-phase tripping will only be allowed when an autoreclose attempt will
follow. The autorecloser function SMBRREC has the functionality such as the
long trip time, CB ready and so on, which can prevent a proper single-phase
tripping and autoreclose. To by-pass this problem the fault initiation should be
Section 10
"Preparing the IED to
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