Fault Location; Breaker Control - Siemens SIPROTEC 7SJ62 Instruction Manual

10.16 Fault Location

10.17 Breaker Control

7SJ62 Manual
C53000-G1140-C121-1
Units of Distance Measurement
Trigger
Reactance Setting (secondary)
Reactance Setting (secondary)
Measurement Tolerance per
VDE 0435 part 303 for
Sinusoidal Measurement Quantities
1
) For I = 1 A, multiply all values by 5; the increment is always 0.001 .
N
2
)
Homogeneous lines are assumed when the fault distance is given in miles or km
Number of Controlled Switching
Device (e.g. Circuit Breakers)
Interlocking
Messages (Feedback)
Control Commands
Operating Command to
Switching Device
Programmable Logic Controller
Local Control
Remote Control
Secondary Ω,
Miles or km of line length
Trip command, Pickup of an Element,
Dropout of an Element, or
External command via binary input
1
) 0.005 to 6.215Ω/km
(Increments 0.001 Ω/km)
0.010 to 10.000 Ω/mile
(Increments 0.001 Ω/mile)
≤ 2.5% line length (without infeed) or
0.005 Ω
1
,
30º ≤ ϕ ≤ 90º and V
k
≥ 0.1
I /I
k N
Depends on the number of binary Devices
inputs and outputs available
Freely programmable interlocking
Feedback messages; closed, open,
intermediate position
Single command, double command
1, 1 plus 1 common, or 2 contacts
PLC logic, graphic input tool
Control via menu control, assignment of
function keys
Using communication interfaces
SCADA
®
DIGSI 4 (e.g. via modem)
Technical Data
2
)
1
)
1
)
≥ 0.1 and
/ V
k N
10-35