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1MRK 506 377-UEN Rev. L
10.12.9.1
Verifying the signals and settings
The voltage can be injected using common test equipment.
Verifying the warning and alarm time limit of THD, WrnLimitTHD and tDelayAlmTHD
1.
Supply the IED with voltage at rated value.
2.
Apply harmonics at the numerical multiple of fundamental frequency along with the injected
voltage signal.
3.
Slowly increase the harmonic amplitudes until the THDWRN signal appears.
4.
Compare the harmonic amplitude level value with the set warning limit value.
5.
Continue to inject the same level of harmonics level until the THDALM signal appears and note
down the time from THDWRN set to THDALM set.
6.
Compare the noted time value with the set time limit value of alarm.
Verifying the warning and alarm time limit of individual harmonic distortions IHD,
WrnLimit#HD and tDelayAlm#HD (where # = 2
1.
Supply the IED with voltage at rated value.
2.
Apply 2
3.
Slowly increase the harmonic amplitude until the 2NDHDWRN signal appears.
4.
Compare the harmonic amplitude level value with the set warning limit value.
5.
Continue to inject the same level of harmonics level until the 2NDHDALM signal appears and
note down the time from 2NDHDWRN signal set to 2NDHDALM signal set.
6.
Compare the noted time value with the set time limit value of alarm.
7.
Repeat Steps
10.12.9.2
Completing the test
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.
10.12.10
Function revision history
10.12.11
Voltage harmonic monitoring VHMMHAI
Prepare the IED for verification of settings outlined in Section
10.12.11.1
Verifying the signals and settings
The voltage can be injected using common test equipment.
Verifying the warning and alarm time limit of THD, WrnLimitTHD and tDelayAlmTHD
1.
Supply the IED with voltage at rated value.
2.
Apply harmonics at the numerical multiple of fundamental frequency along with the injected
voltage signal.
3.
Slowly increase the harmonic amplitudes until the THDWRN signal appears.
4.
Compare the harmonic amplitude level value with the set warning limit value.
5.
Continue to inject the same level of harmonics level until the THDALM signal appears and note
down the time from THDWRN set to THDALM set.
6.
Compare the noted time value with the set time limit value of alarm.
Railway application RER670
Commissioning manual
nd
order harmonic along with injected voltage signal.
2
to
6
for the harmonics until 9
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Testing functionality by secondary injection
nd
rd
th
th
, 3
, 4
...9
)
th
order.
"Preparing the IED to verify
Section 10
GUID-1A5BBF82-94AE-4E87-B951-CA007CC36CF1 v1
GUID-3E56D8AC-9461-4EEA-83A8-522CA177563E v1
GUID-17EC5D60-A748-46F4-8F13-A77E9CA3D17D v3
GUID-EDB51B29-9556-4EF4-94E6-5DC6B8C0F13A v1
GUID-E828F930-88FF-4D5B-8304-2BD3B89919B8 v1
GUID-B2F24353-AAEA-4520-BB1C-5FD5FFCFC67B v1
GUID-804F309E-B02F-4F6B-B0FC-2C7AE3F12DBA v2
settings".
GUID-1A5BBF82-94AE-4E87-B951-CA007CC36CF1 v1
GUID-3E56D8AC-9461-4EEA-83A8-522CA177563E v1
153
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