ABB RED670 Commissioning Manual page 200

Section 11
Testing functionality by secondary injection
11.6.2.3 Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.6.3 Two step residual overvoltage protection ROV2PTOV (59N)
Prepare the IED for verification of settings outlined in Section
11.6.3.1 Function revision history
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11.6.3.2 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 Pickup1.
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>.
( )
t s
IECEQUATION2429 V1 EN-US
( )
t s
ANSIEQUATION2429 V1 EN-US
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Product History
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2.2.1 -
2.2.1 -
2.2.2 -
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 -
2.2.5 -
For example, if the inverse time curve A is selected, the trip signals TRST1 and
TRIP trip after a time corresponding to the equation:
k
1
=
 
U
−
1
 
>
 
U
1
TD 1
=
æ ö
V
-
1
ç ÷
>
Vpickup
è ø
© 2017 - 2021 Hitachi Power Grids. All rights reserved
1MRK 505 378-UUS Rev. J
"Preparing the IED to verify
GUID-22110E0B-DEFB-461F-A437-4D221DB88799 v2
Line differential protection RED670
Commissioning manual
M13806-43 v6
SEMOD54358-3 v7
settings".
SEMOD54358-35 v11
(Equation 102)
(Equation 103)