en07000022.vsd
STL1
STL2
STL3
OR
START
BLKHL1
BLKHL2
BLKHL3
OR
BLKH
IEC07000022 V1 EN
Figure 59:
Generator differential logic diagram 3.
en07000023.vsd
TRIPRESL1
TRIPRESL2
TRIPRESL3
OR
TRIPRES
TRIPUNREL1
TRIPUNREL2
TRIPUNREL3
OR
TRIPUNRE
OR
TRIP
TRNSUNR
TRNSSENS
IEC07000023 V1 EN
Figure 60:
Generator differential logic diagram 4.
6.4.7
Technical data
Table 49:
GENPDIF technical data
Function
Range or value
Accuracy
Unrestrained differential current limit
(1-50)p.u. of
IBase
± 1.0% of set value
Reset ratio
> 90%
-
Base sensitivity function
(0.10–1.00)p.u. of
IBase
± 1.0% of I
r
Negative sequence current level
(0.02–0.4)p.u. of
IBase
± 1.0% of I
r
Operate time, restrained function
40 ms typically at 0 to 2
x set level
-
Reset time, restrained function
40 ms typically at 2 to 0
x set level
-
Operate time, unrestrained function
20 ms typically at 0 to 5
x set level
-
Table continues on next page
1MRK 502 048-UEN A
Section 6
Differential protection
137
Technical manual
Summary of Contents for REG650 ANSI
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