1
sec
100
2
U
UBase
VT
VTprim
IECEQUATION16026 V1 EN-US
(Equation 8)
For phase-to-phase measurement:
U
UBase
VT
VTprim
1
100
>
×
×
sec
IECEQUATION2427 V1 EN-US
(Equation 9)
6.
Decrease the phase voltage to a value lower than set
U1>
value.
7.
Observe that the START signal resets.
8.
Set and apply about 20% higher voltage than
U1>
value for one phase.
9.
Measure the operate time for TRIP Signal.
10. Repeat the above described steps for Step 2 of the function.
10.6.2.2
Completing the test
M13806-43 v6
continue to test another function or end the test by changing the
TESTMODE
setting to
Off
. Restore connections and settings to their original values, if they were
changed for testing purposes.
10.6.3
Two step residual overvoltage protection ROV2PTOV
SEMOD54358-3 v7
Prepare the IED for verification of settings outlined in Section
Values of the logical signals for ROV2PTOV are available on the local HMI under
Main menu/Tests/Function status/Voltage protection/
ResidualOverVoltage2Step(59N, 2(U0>))/ROV2PTOV(59N;2(U0>)):x
, where x
= 1, 2.
The Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
10.6.3.1
Verifying the settings
SEMOD54358-35 v11
1.
Apply a single-phase voltage either to a single-phase voltage input or to a
residual voltage input with the start value below the set value
U1>
.
2.
Slowly increase the value beyond the
U1>
setting until ST1 appears.
3.
Note the operate value and compare it with the set value
U1>
.
4.
Decrease the voltage slowly and note the reset value.
5.
Set and apply a 20% higher voltage than the measured operate value for one
phase.
6.
Measure the time delay for the TR1 signal and compare it with the set value
t1
.
7.
Repeat the test 1–6 above for Step 2 of the function.
Section 10
1MRK 506 377-UEN C
Testing functionality by secondary injection
122
Railway application RER670 2.2 IEC
Commissioning manual
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