ABB Relion 670 Series Applications Manual page 261

1MRK 505 370-UUS Rev. K
11.2.2 Application
Some protection functions operate on the basis of measured voltage at the relay point. Examples of such
protection functions are distance protection function, undervoltage function and energisation-check
function. These functions might mal-operate if there is an incorrect measured voltage due to fuse failure
or other kind of faults in voltage measurement circuit.
VDSPVC is designed to detect fuse failures or faults in voltage measurement circuit based on
comparison of the voltages of the main and pilot fused circuits phase wise. VDSPVC output can be
configured to block voltage dependent protection functions such as high-speed distance protection,
undervoltage relays, underimpedance relays and so on.
ANSI12000143 V1 EN-US
Figure 121: Application of VDSPVC
11.2.3 Setting guidelines
The parameters for Fuse failure supervision VDSPVC are set via the local HMI or PCM600.
Busbar protection REB670
Application manual
A
Main Vt circuit
FuseFailSupvn
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B C
IED
ANSI12000143-1-en.vsd
Section 11
Secondary system supervision
GUID-AD63BF6C-0351-4E48-9FB2-9AB5CF0C521E v2
GUID-0D5A517C-1F92-46B9-AC2D-F41ED4E7C39E v1
GUID-52BF4E8E-0B0C-4F75-99C4-0BCB22CDD166 v2
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