Schweitzer Engineering Laboratories SEL-351 - Section 2: Installation; Table of Contents

Date Code 20001006 Installation i
SEL-351 Instruction Manual
TABLE OF CONTENTS
SECTION 2: INSTALLATION.................................................................... 2-1
Relay Mounting........................................................................................................................2-1
Rear-Panel Connection Diagrams..............................................................................................2-2
Rear-Panel Connection Diagrams..............................................................................................2-3
Making Rear-Panel Connections ...............................................................................................2-7
Improvements in Connectorized
®
SEL-351 Relays (Plug-In Connectors) Result in
Part Number Changes................................................................................................2-7
Required Equipment and General Connection Information..................................................2-7
Models 0351xT and 0351xY (Plug-In Connectors).....................................................2-7
Wiring Harness..................................................................................................2-8
Models 0351x0 and 0351x1 (Screw-Terminal Blocks) ...............................................2-9
Chassis Ground.................................................................................................................2-9
Models 0351xT and 0351xY .....................................................................................2-9
Models 0351x0 and 0351x1.......................................................................................2-9
Power Supply .................................................................................................................2-10
Models 0351xT and 0351xY ...................................................................................2-10
Models 0351x0 and 0351x1.....................................................................................2-10
Output Contacts..............................................................................................................2-10
Model 0351xT.........................................................................................................2-10
Standard Output Contacts ................................................................................2-10
High-Current Interrupting Output Contacts ......................................................2-10
Model 0351x0.........................................................................................................2-11
Models 0351x1 and 0351xY....................................................................................2-11
Standard Output Contacts ................................................................................2-11
High-Current Interrupting Output Contacts ......................................................2-12
Optoisolated Inputs.........................................................................................................2-12
Current Transformer Inputs.............................................................................................2-12
Models 0351xT and 0351xY ...................................................................................2-12
Models 0351x0 and 0351x1.....................................................................................2-13
Potential Transformer Inputs...........................................................................................2-13
Models 0351xT and 0351xY ...................................................................................2-13
Wye-Connected Voltages .................................................................................2-13
Delta-Connected Voltages ................................................................................2-13
Models 0351x0 and 0351x1.....................................................................................2-14
Wye-Connected Voltages .................................................................................2-14
Delta-Connected Voltages ................................................................................2-14
Serial Ports.....................................................................................................................2-14
IRIG-B Time-Code Input ................................................................................................2-16
SEL-351 Relay AC/DC Connection Diagrams for Various Applications (Model 0351xT
Example) ........................................................................................................................2-17
Circuit Board Connections......................................................................................................2-25
Accessing the Relay Circuit Boards.................................................................................2-25
Output Contact Jumpers..................................................................................................2-30
“Extra Alarm” Output Contact Control Jumper ...............................................................2-30
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