GUID-E2EA8017-BB4B-48B0-BEDA-E71FEE353774 v5
Table 85. Fuse failure supervision VDSPVC
Function Range or value Accuracy
Operate value, block of main fuse failure (10.0-80.0)% of UBase ±0.5% of Ur
Reset ratio <110%
Operate time, block of main fuse failure at 1 x U
r
to 0
Min. = 5 ms –
Max. = 15 ms
Reset time, block of main fuse failure at 0 to 1 x U
r
Min. = 15 ms –
Max. = 30 ms
Operate value, alarm for pilot fuse failure (10.0-80.0)% of UBase ±0.5% of Ur
Reset ratio <110% –
Operate time, alarm for pilot fuse failure at 1 x U
r
to 0
Min. = 5 ms –
Max. = 15 ms
Reset time, alarm for pilot fuse failure at 0 to 1 x
U
r
Min. = 15 ms –
Max. = 30 ms
GUID-DAECF9F5-1D0B-43FC-AD29-8F96E05DD0DA v4
Table 86. Voltage based delta supervision DELVSPVC
Function Range or value Accuracy
Minimum Voltage (5.0 - 50.0)% of UBase ±0.5% of Ur at U ≤ Ur
DelU> (2.0 - 500.0)% of UBase Instantaneous 1 cycle & Instantaneous 2 cycle mode:
±20% of Ur at U ≤ Ur±20% of U at U > Ur
RMS & DFT Mag mode:±10% of Ur at U ≤ Ur±10% of U at
U > Ur
DelUAng> (2.0 - 40.0) degrees ±2.0 degrees
Operate time for changeat Ur to (Ur + 2 x DelU>)at
Ur to (Ur + 5 x DelU>)
Instantaneous 1 cycle & Instantaneous 2 cycle mode -
<20msRMS & DFT Mag mode - <30ms
Operate time for jump from Zero degrees to
'AngStVal' + 2 degrees
Vector shift mode - <60ms
GUID-ED3FE722-1F29-4340-94E9-6C907C4474F2 v3
Table 87. Current based delta supervision DELISPVC
Function Range or value Accuracy
Minimum current (5.0 - 50.0)% of IBase ±1.0% of Ir at I ≤ Ir±1.0% of I at I > Ir
DelI> (10.0 - 500.0)% of IBase Instantaneous 1 cycle & Instantaneous 2 cycle mode:
±20% of Ir at I ≤ Ir±20% of I at I > Ir
RMS & DFT Mag mode:
±10% of Ir at I ≤ Ir±10% of I at I > Ir
Second harmonic blocking (5.0 - 100.0)% of
fundamental
±2.0% of Ir
Third harmonic restraining (5.0 - 100.0)% of
fundamental
±2.0% of Ir
Operate time for changeat Ir to (Ir + 2 x DelI>)at Ir
to (Ir + 5 x DelI>)
Instantaneous 1 cycle & Instantaneous 2 cycle mode -
<20ms
RMS & DFT Mag mode - <30ms
Line differential protection RED670
1MRK 505 379-BEN N
Hitachi Power Grids 115
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