Hitachi Relion 670 Series Commissioning Manual page 251

1MRK506371-UUS Rev. M
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
11.13.8.3 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.
11.13.9 Fault current and voltage monitoring function FLTMMXU
Prepare the IED for verification of settings as outlined in section
for test" in this chapter.
11.13.9.1 Function revision history
Document
revision
A
B
C
D
E
F
H
J
L
M
11.13.9.2 Verifying the settings
Common test equipment can be used to determine the injection of current and voltage and time
measurement.
Line distance protection REL670
Commissioning manual
nd
order harmonic along with injected voltage signal.
2 to 6 for the harmonics until 9
Product History
revision
2.2.1 -
2.2.1 -
2.2.2 -
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 -
2.2.5 -
2.2.6 -
2.2.6 -
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Testing functionality by secondary injection
nd rd th th
, 3 , 4 ...9 )
th
order.
"Requirements"
Section 11
GUID-17EC5D60-A748-46F4-8F13-A77E9CA3D17D v3
GUID-EDB51B29-9556-4EF4-94E6-5DC6B8C0F13A v1
GUID-B976D374-CB18-441E-9A12-D4B351D6BF7F v1
GUID-22723399-65DD-44BD-B908-EDA67760065B v1
and section "Preparing
GUID-0AA99E78-0C76-48B5-AA00-8E3201C0D263 v2
GUID-1DC53D89-47B6-4376-BA3C-A39E4F143B88 v1
245