Siemens 7SA511 manual Fault Detection Phases

7SA511 Line Protection Relay Method of Operation

Table A-6. Selected Measurement Quantities in Grounded Systems, with

Overcurrent Fault Detection (With or Without Voltage Control)

Fault Detection Phases

L1, E

L2, E

L3, E

L1, L2

L2, L3

L1, L3

L1,	L2,	E
L2,	L3,	E
L1,	L3,	E
L1,	L2,	E
L2,	L3,	E
L1,	L3,	E
L1,	L2,	E
L2,	L3,	E
L1,	L3,	E
L1,	L2,	L3
L1,	L2,	L3,	E
L1,	L2,	L3
L1,	L2,	L3,	E
L1,	L2,	L3
L1,	L2,	L3,	E

Selected Loop

L1-E

L2-E

L3-E

L1-L2

L2-L3

L3-L1

L1-L2

L2-L3

L3-L1

L1-E

L2-E

L3-E

L2-E

L3-E

L1-E

L3-L1

L3-E

L3-L1

L3-L1

L3-E

L3-E

Selected Setting Parameter

irrelevant

irrelevant

2PH-E FLTS =

PHASE-PHASE

2PH-E FLTS =

LEADING PH-E

2PH-E FLTS =

LAGGING PH-E

3PH FAULTS =

E/F CONTROL

3PH FAULTS =

PH-PH ONLY

3PH FAULTS =

PH-E ONLY

A-18 July 27, 1995