Overcurrent Feature With Voltage Restraint; Overcurrent Feature With Directionality; Over/Undervoltage Feature - ABB Relion 670 Series Commissioning Manual

1MRK 504 165-UEN E
11.8.1.3

Overcurrent feature with voltage restraint

Procedure
1. Connect the test set for injection of three-phase currents and three-phase voltages to
the appropriate current and voltage terminals of the IED.
2. Inject current(s) and voltage(s) in a way that relevant measured (according to setting
parameter
test set.
Overall check in principal as above (non-directional overcurrent feature)
3. Operate value measurement
The relevant voltage restraining value (according to setting parameter
also to be injected from the test set and the influence on the operate value has to be
calculated when testing of the operate value is done.
4. Operate time measurement
Definite times may be tested as above (non-directional overcurrent feature). For inverse
time characteristics the START value (to which the overcurrent ratio has to be calculated)
is the actual pickup value as got with actual restraining from the voltage restraining
quantity.
11.8.1.4

Overcurrent feature with directionality

Please note that the directional characteristic can be set in two different ways either just
dependent on the angle between current and polarizing voltage (setting parameter
DirPrinc_OC1 or DirPrinc_OC2 set to or in a way that the operate value also is dependent on the
angle between current and polarizing voltage according to the I · cos(F) law (setting
parameter
detailed measurement of the directional characteristic is made, than the one described below.
Procedure
1. Connect the test set for injection of three-phase currents and three-phase voltages to
the appropriate current and voltage terminals of the IED.
2. Inject current(s) and voltage(s) in a way that relevant measured (according to setting
parameter
test set.
3. Set the relevant measuring quantity current to lag or lead (lag for negative RCA angle and
lead for positive RCA angle) the relevant polarizing quantity voltage by an angle equal to
the set IED characteristic angle (rca-dir) when forward directional feature is selected and
the
If reverse directional feature is selected or
FromObject , the angle between current and polarizing voltage shall be set equal to rca-
dir+180°.
4. Overall check in principal as above (non-directional overcurrent feature)
5. Reverse the direction of the injection current and check that the protection does not
operate.
6. Check with low polarization voltage that the feature becomes non-directional, blocked or
with memory according to the setting.
11.8.1.5

Over/Undervoltage feature

Procedure
Transformer protection RET670
Commissioning manual
CurrentInput and VoltageInput ) currents and voltages are created from the
DirPrinc_OC1 or DirPrinc_OC2 set to I · cos(F). This has to be known if a more
CurrentInput and VoltageInput ) currents and voltages are created from the
CTstarpoint configuration parameter is set to ToObject .
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Testing functionality by secondary injection
CTstarpoint configuration parameter is set to
Section 11
SEMOD56488-44 v5
VoltageInput ) has
SEMOD56488-60 v5
SEMOD56488-83 v2
203