Hitachi Relion 670 Series Commissioning Manual page 161

1MRK506371-UUS Rev. M
Values of the logical signals belonging to the sensitive directional residual overcurrent and power
protection are available on the local HMI under Main menu /Test /Function status /Current
protection /SensDirResOvCurr(67N,IN>) /SDEPSDE(67N,IN>):x
11.5.6.1 Measuring the trip and time limit for set values
Operation mode 3I
Procedure
1. Set the polarizing voltage to 1.2 · VNRelPU and set the phase angle between voltage and current
to the set characteristic angle (RCADir). Note that the the current lagging the voltage.
Take setting RCAComp into consideration if not equal to 0.
2. Inject current until the function picks up, and make sure that the trip current of the set directional
element is equal to the INcosPhiPU setting.
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
the setting INcosPhiPU..
Take the set characteristic into consideration, see Figure
5. Measure the trip time of the timer by injecting a current two times the set INcosPhiPU value and the
polarizing voltage 1.2 · VNRelPU.
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 VNRelPU .
8. Continue to test another function or complete the test by setting the test mode to Disabled.
Line distance protection REL670
Commissioning manual
· cosφ
0
· cosφ) function activates the PICKUP and PUNDIN output.
0
TDSN SRef ⋅
=
( )
3 ⋅ 3 ⋅ cos ϕ
I V
0 0 test
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Testing functionality by secondary injection
) and current (3I ) i.e. φ´ =
0 0
· cos φ is equal to
0
44 and Figure 45.
Section 11
SEMOD175060-12 v2
SEMOD175060-34 v9
(Equation 77)
155