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1MRK 505 293-UEN B
7.4.1.2
Completing the test
Continue to test another function or end the testing by setting the parameter
under Main menu/Tests/IED test mode/TESTMODE:1. If another function is tested, then set
the parameter
UV2PTUV(27,2U<)/UV2PTUV:1 for the function, or for each individual function in a chain, to be
tested next. Remember to set the parameter
has been tested.
7.4.2
Two step overvoltage protection OV2PTOV
Prepare the IED for verification of settings as outlined in the section
verify
settings".
Values of the logical signals for OV2PTOV are available on the local HMI under Main menu/
Tests/Function status/Voltage/OV2PTOV(59,2U>)/OV2PTOV:1. The Signal Monitoring in
PCM600 shows the same signals that are available on the local HMI.
7.4.2.1
Verification of single-phase voltage and time delay to operate for Step 1
1.
Apply single-phase voltage below the set value
2.
Slowly increase the voltage until the ST1 signal appears.
3.
Note the operate value and compare it with the set value.
For phase-to-ground measurement:
U
1
100
IECEQUATION2426 V1 EN-US
For phase-to-phase measurement:
U
1
100
IECEQUATION2427 V1 EN-US
4.
Decrease the voltage slowly and note the reset value.
5.
Set and apply about 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.
7.
Check the inverse time delay by injecting a voltage corresponding to 1.2 × U1>.
( )
t s
IECEQUATION2429 V1 EN-US
where:
Breaker protection REQ650
Commissioning manual
Blocked to No under Main menu/Tests/Function test modes/Voltage/
The operate value in secondary volts is calculated according to the
following equations:
UBase VT
sec
>
×
×
VTprim
3
VT
sec
>
UBase
×
×
VTprim
For example, if the inverse time curve A is selected, the trip signals TR1
and TRIP operate after a time corresponding to the equation:
k
1
=
U
−
1
>
U
1
© Copyright 2013 ABB. All rights reserved
Blocked to Yes , for each individual function that
U1> .
Section 7
Testing functionality
M13796-25 v5
TestMode to Off
M13806-2 v6.1.1
"Preparing the IED to
M13806-50 v5
(Equation 16)
(Equation 17)
(Equation 18)
67
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