7SA511 Line Protection Relay

Chapter 5

Table 5-3.Relay 7SA511 Scope of Functions, Address Block 7800.

Addr.

7801

7802

7803

7804

LCD Text

DIST. PROT.

DIST. F. DET.

EMERG. O/C

TELEPROTEC.

Description

Distance protection

Type of fault detection

Emergency over- current protection

Pilot protection

Preset

EXIST

OVERCURRENT

EXIST

NON-EXIST

Options

NON-EXIST U/I

IMPEDANCE ZONE

NON-EXIST

￿UNDERREACH OVERREACH

Section

5.10

0

5.13

5.12

7805

7806

7807

7808

FAULT LOCAT

FAULT RECRD

ISOL. E/F

EARTH FAULT

Distance to fault loca-

EXIST

tion

 

Waveform capture

EXIST

function

 

Ground fault

NON-EXIST

protection for

 

ungrounded systems

 

Ground fault

NON-EXIST

protection for

 

grounded systems

 

 

 

NON-EXIST

NON-EXIST

EXIST

DIRECTIONAL D.T. (D.T. = definite time

DIREC.

￿COMPARISON INVERSE TIME

5.17

5.5

5.14

5.15

7810

7813

7814

7885

7899

INTERNAL AR

POWER

SWING

LSA

PARAM. C/O

FREQUENCY

Internal automatic reclose function

Power swing block/trip function

Connection to a sub- station control system via the rear port

Parameter changeover function

Rated system frequency

NON-EXIST

NON-EXIST

NON-EXIST

NON-EXIST

fN 60 Hz

EXIST

EXIST

EXIST

EXIST

fN 50 Hz

5.16

5.11

5.4

5.8

5.9.1

5.7 Operating Settings

This section discusses the various operating settings available in the 7SA511 relay. These settings are:

Operating Parameters (7000) - Program the general operating parameters for the relay.

Real-Time Clock (8100) - Set the real-time clock.

5.7.1Operating Parameters (7000)

The relay’s general operating parameters are in address block 7000. Table 5-4 lists the preset operating parameters and options. Compare these presettings to the information on the completed worksheets and determine which parameters, if any, you need to change to match your operating environment. When you have changed all of the necessary settings, follow the procedure described in section 5.3.4 to save the new settings.

July 27, 1995

5-15

Page 99
Image 99
Siemens 7SA511 manual Options, Section, Operating Settings, Operating Parameters