Extended Testing - ABB RET670 Commissioning Manual

1MRK 504 154-UUS B
Vpickup
ANSIEQUATION2426 V1 EN-US
For phase-to-phase measurement:
Vpickup
ANSIEQUATION2427 V1 EN-US
4. Decrease the voltage slowly and note the reset value.
5. Set and apply about 20% higher voltage than the measured trip value for one phase.
6. Measure the time delay for the TRST1 signal and compare it with the set value.
7. Check the inverse time delay by injecting a voltage corresponding to 1.2 × Vpickup>.
8. Repeat the test to check the inverse time characteristic at different over-voltage levels.
9. Repeat the above-described steps for Step 2 of the function.
10.6.2.2

Extended testing

1. The tests above can be repeated for
10.6.2.3 Completing the test
Continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
10.6.3 Two step residual overvoltage protection ROV2PTOV (59N)
Prepare the IED for verification of settings as outlined in section
section "Preparing for test"
10.6.3.1 Verifying the settings
1. Apply a single-phase voltage either to a single-phase voltage input or to a residual voltage
input with the pickup value below the set value
2. Slowly increase the value until PU_ST1 appears.
3. Note the trip value and compare it with the set value.
4. Decrease the voltage slowly and note the reset value.
5. Set and apply a 20% higher voltage than the measured trip value for one phase.
6. Measure the time delay for the TRST1 signal and compare it with the set value.
7. Check the inverse time delay by injecting a voltage corresponding to 1.2 × Vpickup>.
Commissioning manual
>
VBase VT sec
´ ´
100 VTprim
3
>
VT sec
´ ´
VBase
100 VTprim
in this chapter.
For example, if the inverse time curve A is selected, the trip signals TRST1 and
TRIP trip after a time corresponding to the equation:
2 out of 3 and for 3 out of 3 operation mode.
"Requirements"
Pickup1 .
Testing functionality by secondary injection
(Equation 99)
(Equation 100)
GUID-BE4B4A36-CCEE-4020-B7DC-6A83A43D11F5 v2
TestMode setting to Disabled .
and
SEMOD54358-35 v10
Section 10
M13806-43 v6
SEMOD54358-3 v6
169