Siemens 7SA511 manual Emergency Overcurrent Protection, Fault Location, Automatic Reclose

7SA511 Line Protection Relay Displaying System and Relay Information

LCD Text (2nd line)

Dist.TransBlo

Description

Transient blocking function of distance protection has operated

Emergency Overcurrent Protection

O/C Fault E

Flt. O/C L1

Flt. O/C L1E

Flt. O/C L2

Flt. O/C L2E

Flt. O/C L12

Flt. O/C L12E

Flt. O/C L3

Flt. O/C L3E

Flt. O/C L13

Flt. O/C L13E

Flt. O/C L23

Flt. O/C L23E

Flt. O/C L123

Flt. O/C L123E

O/C Trip L1

O/C Trip L2

O/C Trip L3

O/C Trip L123

Ground fault detection

Emergency overcurrent fault detection in phase 1

Emergency overcurrent fault detection in phase 1 and ground

Emergency overcurrent fault detection in phase 2

Emergency overcurrent fault detection in phase 2 and ground

Emergency overcurrent fault detection in phases 1 and 2

Emergency overcurrent fault detection in phases 1 and 2 and ground

Emergency overcurrent fault detection in phase 3

Emergency overcurrent fault detection in phase 3 and ground

Emergency overcurrent fault detection in phases 1 and 3

Emergency overcurrent fault detection in phases 1 and 3 and ground

Emergency overcurrent fault detection in phases 2 and 3

Emergency overcurrent fault detection in phases 2 and 3 and ground

Emergency overcurrent fault detection in phases 1 and 2 and 3

Emergency overcurrent fault detection in phases 1 and 2 and 3 and ground

Single-pole trip in phase 1 by emergency overcurrent protection

Single-pole trip in phase 2 by emergency overcurrent protection

Single-pole trip in phase 3 by emergency overcurrent protection

Three-pole trip by emergency overcurrent protection

Fault Location

Fault Locat. nn

Rpri= nn.nn

Xpri= nn.nn		9
d	= km
d	[%] =

“nn” is the line loop from which fault data has been calculated

Calculated fault resistance in ohms

Calculated fault reactance in ohms

Calculated fault distance in kilometers

Calculated fault distance in percent of line length

High-Resistance Ground Fault Protection in Grounded Systems

E/F Fault I>

E/F Fault I>>

E/F Trip ->

E/F Trip <->

>E/F Recept

E/F Send

E/F TransBloc

Fault detection ground fault protection IE> element (valid for directional determination and transmission)

Fault detection ground fault protection IE>> element (valid for trip release)

Trip by directional ground fault protection (definite time) or nondirectional backup element

Trip by nondirectional ground fault protection (inverse time overcurrent)

Directional comparison ground fault protection, carrier signal received

Directional comparison ground fault protection, carrier signal transmitted

Transient blocking function of directional ground fault protection has operated

Automatic Reclose

Reclose

Internal automatic reclose command has been issued

Table Status

End of table

Table overflow

Table empty

Table superseded *

Follows last stored message if the table is not full

Last valid message if more than 80 messages are stored

No event recorded (displayed in all unused addresses)

A new fault occurred during read-out of data

*Following display of this message, pressing either the or key will cause the first message for the new fault to be displayed.

6-12 July 27, 1995