Siemens 7SG11 Manual page 83

P/F Lowset Inhib.
Ia
*
Dir'n A Fwd
Ib
* Dir'n B Fwd
Ic
*
Dir'n C Fwd
Figure 2.3-3
The earth-fault pole similarly has its own Instantaneous Lowset, Highset1 and Highset2 overcurrent elements with
their own starter settings and selectable DTL characteristic.
E/F Lowset Inhib.
Ie
*
Dir'n E/F Fwd
Figure 2.3-4
Table 2-11 Phase-fault and Earth-fault Overcurrent Settings
Sub-menu: Protection
Setting name
Gn P/F [E/F] Charact. Dir
Control
Gn P/F [E/F] Charact. Setting
Gn P/F [E/F] Charact.
Gn P/F [E/F] Charact. Time Mult 0.025, 0.050...1.000...1.600
Gn P/F [E/F] Charact. Delay
Gn P/F [E/F] Lowset Dir Control OFF, FWD, REV, TRI
Gn P/F [E/F] Lowset Setting
Gn P/F [E/F] Lowset Delay
Gn P/F [E/F] Highset 1 Dir
Control
Gn P/F [E/F] Highset 1Setting
©2013 Siemens Protection Devices Limited
*
P/F Lowset Dir Control
P/F Lowset Setting
c
Phase A
lowset starter
>
Event
c
Phase B
lowset starter
>
Event
c
Phase B
lowset starter
>
Event
c
Functional Diagram – Instantaneous Phase-fault Overcurrent Elements
*
E/F Lowset Dir Control
E/F Lowset Setting
c
Earth lowset
starter
>
Event
c
Functional Diagram – Instantaneous Earth-fault Overcurrent Elements
Range (bold = default)
OFF, FWD, REV, TRI
0.05, 0.10, 0.15...1.00...2.50
NI, VI, EI, LTI, DTL
0.00, 0.01...5.00...20.00, 20.5 ...100,
101 ... 300
OFF, 0.05, 0.10...1.00...3.00,
3.5, 4.0...52.5
0.00, 0.01...20.00, 20.5 ...100, 101 ...
300
OFF, FWD, REV, TRI
OFF, 0.05, 0.10...3.00
3.5, 4.0...10.0...52.5
7SG11 Argus Technical Reference
This diagram shows t he logic for
*
overcurrent elements in the forward
direction; reverse is similar. On relays
with no directional elements these
inputs and settings are omitted.
P/F Lowset Delay
Phase A
lowset trip
Event
Phase B
lowset trip
Event
Phase B
lowset trip
Event
P300008 Protection Functions / Instantaneous P/F
This diagram shows t he logic for
*
overcurrent elements in the forward
direction; reverse is similar. On relays
with no directional elements these
inputs and settings are omitted.
E/F Lowset Delay
Earth lowset trip
Event
P300008 Protection Functions / Instantaneous E/F
Units Notes
Argus 2 and Argus 6 only.
xIn
see note 1 below
xt
sec
Argus 2 and Argus 6 only.
xIn
see note 1 below
sec
Argus 2 and Argus 6 only.
xIn see note 1 below
1
P/F Lowset
E/F Lowset
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