Toshiba GR 200 Series, Instruction Manual

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6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 1104 -
10.2.30
Voltage transformer failure (VT fail)
Detecting the failure in the VT is achieved by the operation of the VT failure detection function
(VTF†). Thus, the failure signal in the VTF is transferred to the automatic supervision function
and it is grouped into the error level together with other error signals.
†Note: For more information about the VTF function, see Chapter
Relay application: VT
failure detection.
(i)
Error level
Generally, the default error level has been set at level 3 (
Minor error
), but the user can program
the level using setting [
CHK_VTF:LVl
]; then, set
On
for the setting [
CHK_VTF:Sw
]. The
manufacturer sets ten (10) seconds to detect the failure; it is reset instantly when the failure
is cleared.
(ii)
Error message
When the function operates and detects error, an error message can be shown at the LED and
the LCD screen.
Table 10.2-61 Error messages provided by the supervisor in CHK_VTF
Message and level Meaning of the information
VT fail Detection of the failure in the VT
Error level Minor error (Level 3)
Table 10.2-62 Detailed information in Hexadecimal in CHK_VTF
Display area Meaning of the detailed information
N/A (No information is displayed)