Generator protection REG670
Version 2.2
Table 84. Fuse failure supervision VDSPVC
Function
Operate value, block of main fuse failure
Reset ratio
Operate time, block of main fuse failure at 1 x U
to 0
Reset time, block of main fuse failure at 0 to 1 x U
Operate value, alarm for pilot fuse failure
Reset ratio
Operate time, alarm for pilot fuse failure at 1 x U
to 0
Reset time, alarm for pilot fuse failure at 0 to 1 x
U
r
Table 85. Voltage based delta supervision DELVSPVC
Function
Minimum Voltage
DelU>
DelUAng>
Operate time for changeat Ur to (Ur + 2 x DelU>)at
Ur to (Ur + 5 x DelU>)
Operate time for jump from Zero degrees to
'AngStVal' + 2 degrees
Table 86. Current based delta supervision DELISPVC
Function
Minimum current
DelI>
Second harmonic blocking
Third harmonic restraining
Operate time for changeat Ir to (Ir + 2 x DelI>)at Ir
to (Ir + 5 x DelI>)
102
GUID-E2EA8017-BB4B-48B0-BEDA-E71FEE353774 v5
Range or value
(10.0-80.0)% of UBase
<110%
Min. = 5 ms
r
Max. = 15 ms
Min. = 15 ms
r
Max. = 30 ms
(10.0-80.0)% of UBase
<110%
Min. = 5 ms
r
Max. = 15 ms
Min. = 15 ms
Max. = 30 ms
GUID-DAECF9F5-1D0B-43FC-AD29-8F96E05DD0DA v4
Range or value
(5.0 - 50.0)% of UBase
(2.0 - 500.0)% of UBase
(2.0 - 40.0) degrees
GUID-ED3FE722-1F29-4340-94E9-6C907C4474F2 v3
Range or value
(5.0 - 50.0)% of IBase
(10.0 - 500.0)% of IBase
(5.0 - 100.0)% of
fundamental
(5.0 - 100.0)% of
fundamental
© Copyright 2017 Hitachi Power Grids. All rights reserved
Accuracy
±0.5% of Ur
–
–
±0.5% of Ur
–
–
–
Accuracy
±0.5% of Ur at U ≤ Ur
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
±2.0 degrees
Instantaneous 1 cycle & Instantaneous 2 cycle mode -
<20msRMS & DFT Mag mode - <30ms
Vector shift mode - <60ms
Accuracy
±1.0% of Ir at I ≤ Ir±1.0% of I at I > Ir
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
±2.0% of Ir
±2.0% of Ir
Instantaneous 1 cycle & Instantaneous 2 cycle mode -
<20ms
RMS & DFT Mag mode - <30ms
1MRK 502 074-BEN M
Hitachi Power Grids