14.3.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Fuse failure supervision VDSPVC VTS 60
14.3.2 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.
1MRK 506 369-UUS - Section 14
Secondary system supervision
Line distance protection REL670 2.2 ANSI 629
Application manual
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