Measuring The Operate And Time Limit For Set Values - ABB Relion 670 Series Installation And Commissioning Manual

Section 15
Verifying settings by secondary injection
15.6.6.1
174
Function status/Current protection/SensDirResOvCurr(PSDE,67N)/
SDEPSDE:x

Measuring the operate and time limit for set values

Operation mode 3I
0
Procedure
1. Set the polarizing voltage to 1.2 · UNRel> and the phase angle between
voltage and current to the set characteristic angle (RCADir), the current
lagging the voltage.
Take setting RCAComp into consideration if not equal to 0.
2. Measure that the operate current of the set directional element is equal to the
INcosPhi> setting.
The I Dir (I cos(Angle)) function activates the START and STDIRIN output.
0
Measure with angles j = RCADir +/- 45° that the measuring element
3.
cos (RCADir - j) = I
operates when I
0
4. Compare the result with the set value.
Take the set characteristic into consideration, see figure
5. Measure the operate time of the timer by injecting a current two times the set
INcosPhi> value and the polarizing voltage 1.2 · UNRel>.
= ×
Tinv kSN Sref / 3
IECEQUATION2402 V1 EN
6. Compare the result with the expected value.
The expected value depends on whether definite or inverse time was selected.
7. Set the polarizing voltage to zero and increase until the boolean output signal
UNREL is activated, which is visible in the Application Configuration in
PCM600 when the IED is in online mode. Compare the voltage with the set
value UNRel>.
8. Continue to test another function or complete the test by setting the test mode
to Off.
· cosφ
cos(+/-45) = INcosPhi>.
0
( )
j
×
I cos
0 test
1MRK 502 029-UEN A
94 and figure 95.
(Equation 1)
Installation and commissioning manual