Siemens 7SA511 manual Product Description

7SA511 Line Protection RelayChapter 2

Product Description

Table of Contents
2. Product Description		2-3
2.1	About the Relay	2-3
2.2	Relay Features	2-3
2.3	Relay Setting Types	2-4
	2.3.1 Relay Setting Descriptions (by Address Block)	2-5
2.4	Overview of Protection Functions	2-8
	2.4.1 Distance Protection	2-8
	2.4.2 Emergency Overcurrent Protection	2-10
	2.4.3 Power Swing Protection (optional)	2-10
	2.4.4 Pilot Protection	2-10
	2.4.5 High-Sensitivity Ground Fault Protection for Ungrounded Systems
	(optional)	2-10
	2.4.6 High-Resistance Ground Fault Protection (optional)	2-11
	2.4.7 Automatic Reclose (optional)	2-12
	2.4.8 Distance-to-Fault Location	2-12
2.5	Additional Functions and Features of the Relay	2-13
	2.5.1 Secured Data Storage	2-13
	2.5.2 Serial Data Ports	2-13
	2.5.3 Multiple Parameter Sets (optional)	2-14

July 27, 1995 2-1