Identifying Ied Application Problems; Inspecting The Wiring - Hitachi Relion 670 Series Operation Manual
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Also See for Relion 670 Series:
- Applications manual (438 pages) ,
- Commissioning manual (284 pages) ,
- Product manual (192 pages)
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Section 9
Troubleshooting
1.
Press
2.
Select Change Password and press
IEC16000001 V1 EN-US
3.
Enter a new password using the on-screen keyboard.
To cancel password change, press
9.3.2
Identifying IED application problems
Navigate to the appropriate menu in the LHMI to identify possible problems.
•
Check that the function is on.
•
Check that the correct setting group (1 to 6) is activated.
•
Check if the function is blocked.
•
Check if the IED is in the test mode.
•
Check the measurement values.
•
Check the connections to trip and DFR functions.
•
Check the TRM channel settings.
•
Check the cycle time of the SMAI block.
•
Check the DFT reference of the SMAI block.
9.3.2.1
Inspecting the wiring
The physical inspection of wiring connections often reveals the wrong connection for phase currents or
voltages. However, even though the phase current or voltage connections to IED terminals might be
correct, wrong polarity of one or more measurement transformers can cause problems.
•
Check the current or voltage measurements and their phase information from Main menu /
Measurements/Analog primary values or Analog secondary values.
•
Check that the phase information and phase shift between phases is correct.
•
Correct the wiring if needed.
•
•
•
Check the actual state of the connected binary inputs.
•
•
•
Measure output contacts using the voltage drop method of applying at least the minimum contact
load given for the output relays in the technical data, for example 100 mA at 24 V AC/DC.
88
.
IEC16000001-1-en.vsdx
Change the parameter Negation in Configuration /Analog modules/3 phase analog group /
SMAIn:1 (n= the number of the SMAI used).
Changing the Negation parameter is not recommended without special skills.
Change the parameter in PCM600, see PCM600 documentation.
In LHMI, select Main menu /Test/Binary input values . Then navigate to the board with the
actual binary input to be checked.
Check the actual state of the connected binary inputs through PCM600, see PCM600
documentation.
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to confirm.
.
1MRK500127-UUS Rev. M
GUID-D8E1AECF-1FD8-4996-A447-948B52EAD0C2 v8
GUID-665B75A6-A074-4A03-ADF1-3D0FAD198E61 v8
670 series
Operation manual
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