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