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10.2.26 Voltage transformer failure (VT fail)
VT failure can be detected in VT failure function (see Chapter
detection
→p. 221).
Error level
(i)
Error level has been set at level 3 (Minor error; default), but the user can change it with setting
[CHK_VTF:LVl]. Remember that the user needs to set On for setting [CHK_VTF:Sw]. The
manufacturer has determined ten (10) seconds for the detection. The VT fail will be reset
instantly when the failure is cleared
Error message
(ii)
When detecting an error, the error message will be shown on LCD screen. LED will be lit up.
Table 10.2-51 Error messages provided by the supervisor in CHK_VTF
Message and level
VT fail
Error level
Table 10.2-52 Detailed information in Hexadecimal in CHK_VTF
Display
area
Top
00000001: VT fail is existing
row
Middle
00000001: VTF2 ALARM
row
Bottom
00000001: EXTERNAL VTF
row
Detection of the failure in the VT
Minor error (Level 3)
Meaning of the detailed information
Left column
- 828 -
Meaning of the information
00000001: VTF1 ALARM
00000001: VTF BLOCK
(No information is displayed)
6F2T0207 (0.01)
Relay application: VT failure
Right column
GRE200 (5,6)
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