Siemens 7SA511 manual Installation

7SA511 Line Protection RelayChapter 4

Installation

Table of Contents
4. Installation	4-3
4.1 Receiving and Handling the Relay	4-3
4.2 Storing the Relay	4-4
4.3 Preparing the Relay for Installation	4-4
4.3.1 Removing the Relay’s Front Cover	4-5
4.3.2 Removing/Installing Relay Modules	4-5
4.4 Printed Circuit Board Locations	4-7
4.5 Changing the Binary Input Voltage Range	4-7
4.6 Installing the Backup Battery	4-8
4.7 Mounting the Relay	4-11
4.8 Connecting the Relay to Your System	4-12
4.8.1 General Connection Drawings	4-12
4.8.2 Current Transformer (CT) and Voltage Transformer (VT)
Connection Diagrams	4-18
4.8.3 Pilot Wire Connection Diagrams	4-21
List of Figures
Figure 4-1.Exploded View of the 7SA511 Relay's Components	4-3
Figure 4-2.Removing the Relay's Front Cover	4-5
Figure 4-3. Removing the Relay Modules From the Housing	4-6
Figure 4-4. Changing the Binary Input Threshold Voltage	4-8
Figure 4-5.Backup Battery Preparation	4-9
Figure 4-6.Backup Battery Installation	4-10
Figure 4-7. Flush Mounting Diagram. (Dimensions are in inches.)	4-11
Figure 4-8. Flush Mount Connection Diagram	4-13
Figure 4-9. Rear Serial Interface Connections (Flush Mount Configuration)	4-14
Figure 4-10.Terminal Block Detail on Rear Panel - Ring Lugs	4-15
Figure 4-11.Terminal Block Detail on Rear Panel - Wire Compression	4-16
Figure 4-12. Terminal Function Assignment on Rear Panel	4-17
Figure 4-13. CT Circuits	4-19
Figure 4-14. VT Circuits	4-20
Figure 4-15.Pilot Wire Connections for Overreaching Zone Comparison with 7PA5210	4-22
Figure 4-16.Pilot Wire Connections for Overreaching Zone Comparison with 7SW90	4-23

July 27, 1995 4-1