ABB RET670 Commissioning Manual page 149

1MRK 504 154-UUS B
Operation mode 3I
Procedure
1. Set the polarizing voltage to 1.2 ·
current to the set characteristic angle (
voltage.
Take setting
2. Inject current until the function picks up, and make sure that the trip current of the set
directional element is equal to the
The I Dir (3I
3. Assume that φ´ is the phase angle between injected voltage (3V
RCADir -φ. Change φ´ to for example 45 degrees. Increase the injected current until the
function trips.
4. Compare the result with the set value and make sure that the new injected 3I
to the setting
Take the set characteristic into consideration, see Figure
5. Measure the trip time of the timer by injecting a current two times the set
and the polarizing voltage 1.2 ·
Tinv
ANSI13000294 V1 EN-US
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
8. Continue to test another function or complete the test by setting the test mode to
Commissioning manual
· cosφ
0
RCAComp into consideration if not equal to 0 .
· cosφ) function activates the PICKUP and PUNDIN output.
0
INcosPhiPU ..
TDSN SRef
⋅
=
3 I 3 V cos ϕ ( )
⋅ ⋅
0 0 test
VNRelPU and set the phase angle between voltage and
RCADir ). Note that the the current lagging the
INcosPhiPU setting.
VNRelPU .
VNRelPU .
Testing functionality by secondary injection
) and current (3I
0 0
· cos φ is equal
0
36 and Figure 37.
INcosPhiPU value
Section 10
SEMOD175060-34 v9
) i.e. φ´ =
(Equation 77)
Disabled .
143