Siemens 7SA511 manual Device Configuration for Automatic Reclose, Option, Internal AR

7SA511 Line Protection Relay Programming the Relay

5.16 Automatic Reclose (Optional)

This section applies only to relays equipped with the optional automatic reclose (AR) function, model numbers 7SA511*-**A5*-**B/C/F/G*. Skip this section if your relay does not have this function. Automatic reclose is effective only if configured as existing at address 7810 (see section 5.6).

The relay can be ordered either with three-pole automatic reclose (single- and multi-shot, model 7SA511*-**A5*- **B/F*) or for all modes of automatic reclose (single-pole, three-pole, single- and three-pole, single- and multi-shot, model 7SA511*-**A5*-**C/G*). If the relay model configuration is for three-pole automatic reclose only, then only those parameters are available which relate to this automatic reclose program.

There are two address blocks used to configure automatic reclose.

The device configuration parameters in address block 7900 include settings for how the

￿automatic reclose function works with other relay protection functions.

Address block 3400 consists of the specific settings required for automatic reclose in the 7SA511 relay.

Prerequisite Setting:

Addr.	LCD Text
7810	INTERNAL AR

Description

Internal automatic reclose function

Setting

EXIST

5.16.1 Device Configuration for Automatic Reclose (7900)

Table 5-26 lists the relay presettings and setting options available for automatic reclose device configuration. Compare these presettings to the information on the completed worksheets and determine which settings 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.

Table 5-26.Device Configuration Automatic Reclose Settings

Addr.

7902

7903

7904

7906

LCD Text

AR w/ DIST.

AR w/ O/C

AR w/o TELE

AR w/ E/F

Description

Indicates whether or not automatic reclose works with distance protection

Indicates whether or not automatic reclose works with emergency overcurrent protection

Indicates if automatic reclose works when signal transmission is distorted or switched off

Indicates if automatic reclose works with ground fault protection in grounded systems

Preset

YES

YES

YES

YES

Option

NO

NO

NO

NO

5-42 July 27, 1995