Siemens 7SA511 manual Introduction, Operator Panel

7SA511 Line Protection Relay Chapter 5

5. Programming the Relay

5.1 Introduction

Before operating the 7SA511 relay, you must program it specifically for your system. This chapter tells you how to:

Use the operator panel

Place the relay in programming mode

￿Program the relay Save new settings

This chapter also identifies the factory presettings for the power system, protection functions, and relay configuration settings. Setting options and range are included.

Before you begin any procedure in this chapter, either fill out the setting worksheets provided in Reference F of this manual or get a copy of the worksheets as completed by a relay engineer. To avoid operating problems due to incorrect parameters, the relay should be configured as soon as possible after the installation procedures in Chapter 4 are completed.

CAUTION

Possible configuration errors. May result in incorrect protection settings.

Only authorized personnel should program the relay. Do not attempt to program the relay if you are not certain of the information you are changing.

5.2 Operator Panel

Before programming and operating the relay, you need to be familiar with the integral keypad and other features of the relay’s operator panel. Figure 5-1 illustrates the features of the 7SA511 operator panel. These features, listed below, are described in the rest of this section:

Keypad

Display panel

On/Off switch

Relay nameplate

LEDs

￿Reserved area for LED labels Serial data port

July 27, 1995 5-3