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1.3.6 Overfluxing
T
S
X
EST
ETTING
(V
)
OLTS
X0, Y0
X1, Y1
X2, Y2
X3, Y3
X4 ,Y4
X5, Y5
X6, Y6
Table 9 - Over Fluxing Inverse Curve 24IT
T
S
EST
ETTING
(V
)
OLTS
24DT-1
24DT-2
Table 10 - Over Fluxing Dual Definite Time 24DT
1.3.7 Thermal Overload
P
S
A
ICKUP
ETTING
CTUAL
(X I
)
(X I
N
Table 11 - Thermal Overload
1.3.8 Backup Over current and Earth Fault
E
P
A
LEMENT
ICKUP
CTUAL
A
N
.
S
P
NSI
O
ETTING
ICKUP
(E.G.
51
)
N
Table 12 - Backup Overcurrent and Earth Fault
1.3.9 Negative Phase Sequence Over current
E
P
A
LEMENT
ICKUP
CTUAL
A
N
.
S
P
NSI
O
ETTING
ICKUP
(E.G.
46
)
DTL
Table 13 - Negative Phase Sequence Over current
©2010 Siemens Protection Devices Limited
S
Y
P
ETTING
ICKUP
(S
)
(V
ECONDS
OLTS
A
P
T
CTUAL
ICKUP
(V
)
OLTS
P
C
T
ICKUP
ALCULATED
IME
)
(S
)
N
ECONDS
C
O
ALCULATED
PERATE
T
(S) A
IME
T
M
O
P
.
ULTIPLE
F
U
(s)
(x PU)
C
O
ALCULATED
PERATE
T
(S) A
IME
T
M
O
PU
ULTIPLE
F
(s)
(x PU)
7SG14 Duobias-M-200 Commissioning
X
P
Y
ICKUP
)
(S
)
ECONDS
D
S
IME
ELAY
ETTING
(S
)
ECONDS
A
O
CTUAL
PERATE
T
(S
)
IME
ECONDS
A
CTUAL
O
PERATE
T
D
(S)
A
IME
ELAY
A
CTUAL
O
PERATE
T
D
(S)
A
IME
ELAY
R
R
ESET
ESET
T
T
IME
IME
R
PPLIED
ECORDED
R
R
ESET
ESET
T
T
IME
IME
R
PPLIED
ECORDED
Chapter 7 Page 18 of 20
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