ABB REB670 Series, Applications Manual

Page: 249 / 476

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.
FuseFailSupvn
IED
L1 L2 L3
U
2
L1
U
2
L2
U
2
L3
U
1
L
1
U
1
L
2
U
1
L
3
IEC12000143-1-en.vsd
Main Vt circuit
P
ilo
t
V
T
c
ir
cu
it
IEC12000143 V1 EN-US
Figure 119: Application of VDSPVC
11.2.3 Setting guidelines
GUID-0D5A517C-1F92-46B9-AC2D-F41ED4E7C39E v1
GUID-52BF4E8E-0B0C-4F75-99C4-0BCB22CDD166 v2
The parameters for Fuse failure supervision VDSPVC are set via the local HMI or PCM600.
GUID-0B298162-C939-47E4-A89B-7E6BD7BEBB2C v2
The voltage input type (phase-to-phase or phase-to-neutral) is selected using
ConTypeMain
and
ConTypePilot parameters, for main and pilot fuse groups respectively.
The connection type for the main and the pilot fuse groups must be consistent.
The settings Ud>MainBlock, Ud>PilotAlarm and USealIn are in percentage of the base voltage,
UBase. Set UBase to the primary rated phase-to-phase voltage of the potential voltage
1MRK 505 370-UEN D Section 11
Secondary system supervision
Busbar protection REB670 243
Application manual