5. Measure the operate time of the timer by injecting 1.2 · VNRelPU and a current to get
two times the set SN_PU operate value.
( )
0 0/ 3 3 costest testTinv kSN Sref I V
j
= × × ×
ANSIEQUATION2403 V1 EN (Equation 2)
6. Compare the result with the expected value.
The expected value depends on whether definite or inverse time was selected.
7. Continue to test another function or complete the test by setting the test mode to
Disabled.
Operation mode 3I
0
and φ
1. Set the polarizing voltage to 1.2 · VNRelPU and the phase angle between voltage and
current to the set characteristic angle (RCADir), the current lagging the voltage.
2. Measure that the operate power is equal to the INRelPU setting for the set directional
element.
Note that for pickup, both the injected current and voltage must be
greater than the set values INRelPU and VNRelPU respectively.
The function activates the BFI_3P and STDIRIN output.
3. Measure with angles j around RCADir +/- ROADir.
4. Compare the result with the set values, refer to figure 12 for example characteristic.
5. Measure the operate time of the timer by injecting a current to get two times the set
SN_PU operate value.
( )
0 0/ 3 3 costest testTinv kSN Sref I V
j
= × × ×
ANSIEQUATION2403 V1 EN (Equation 3)
6. Compare the result with the expected value.
The expected value depends on whether definite or inverse time was selected.
7. Continue to test another function or complete the test by setting the test mode to
Disabled.
Section 6 1MRK 505 293-UUS A
Testing functionality
56
Commissioning manual