X and check that this reading corresponds to the injected impedance. No start
or trip signals shall be activated.
2. Feed the IED with current and voltage corresponding to the apparent
impedance: Test #2, as shown in figure
92. Read the analog outputs for R and
X and check that this reading corresponds to the injected impedance. No start
or trip signals shall be activated.
3. Feed the IED with current and voltage corresponding to the apparent
impedance: Test #3, as shown in figure
92. Read the analog outputs for R and
X and check that this reading corresponds to the injected impedance. The
signals START and STZ2 shall be activated instantaneously and the signals
TRIP and TRZ2 shall be activated after the set delay tZ2.
4. Switch the current infeed injection off. The function shall reset. Turn the
current on with the values corresponding to Test #3 and measure the time to
activation of signal TRZ2. This time shall be compared to tZ2.
5. Feed the IED with current and voltage corresponding to the apparent
impedance: Test #4, as shown in figure
92. Read the analog outputs for R and
X and check that this reading corresponds to the injected impedance. The
signals START, STZ2 and STZ1 shall be activated instantaneously and the
signals TRIP, TRZ2 and TRZ1 shall be activated after the different set time
delays.
6. Switch the current infeed injection off. The function shall reset. Turn the
current on with the values corresponding to Test #4 and measure the time to
activation of signal TRZ1. This time shall be compared to tZ1.
Section 15 1MRK 502 029-UEN A
Verifying settings by secondary injection
166
Installation and commissioning manual
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