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Cooper Lighting S260-75-1 Figure 21a, Schematic diagram – fault block accessory (page 1 of 2)

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Type S Automatic Load-Transfer Control Installation, Operation, and Maintenance Instructions

SOURCE I

H.V. SWITCH

AØ

BØ

CØ

AØ

BØ

CØ

SOURCE II

H.V. SWITCH

PART OF

RESISTOR BOARD

GROUND ACTUATING RESISTOR

R306

a2 SOURCE II H.V. SWITCH

SOURCE I

H.V. SWITCH

Figure 21a.Schematic diagram – fault block accessory (page 1 of 2).

Contents

Contents SAFETY FOR LIFE SAFETY INFORMATION Hazard Statement Definitions Safety Instructions PRODUCT INFORMATION Introduction Read This Manual First Additional Information Acceptance and Initial Description of Operation Typical Automatic Load-transferSequence using the Type S Control Variations in the Operation of the Type S Control Time Delay Selection PRE-INSTALLATIONCHECK Pre-Installation Test Set–up Test Procedure INSTALLATION INSTRUCTIONS Initial Programming Mounting the Control Grounding the Control Before Placing the Control and Switchgear into Service Typical Type S control load-transferscheme Outline and mounting dimensions TABLE Reaction and Transition Times of Cooper Power Systems Motor-OperatedSwitches Customer Connections Connection Diagram .5 Figure Typefor diagram Connection (The.switch phase-threeVRV control transfer-loadS tapcutouts, transformer or VLR phase-three Connection .6 Figure .switch diagram reclosers, fuses, tap .7 Figure diagram Connection ).shown not are arresters and cutouts, transformer (The diagram Connection .8 Figure for Interconnecting Cables Switch Cable Potential Transformer Cable Fault Block Shielded Cable Type S control front panel Description and Use of Operating Controls and Indicators OPERATING INSTRUCTIONS Initial Operation Timer Settings Normal Operation THEORY OF OPERATION —BASICS CONTROL Voltage Sensing Automatic Transfer, Preferred to Alternate Return Transfer, Parallel Transition Return Transfer, Non-ParallelTransition No Preference Mode Preferred Source II Mode Control Mode Switch, S5 Manual Control Indicating Lamps TROUBLESHOOTING—BASICS CONTROL General Remove the Control from Service Basic Troubleshooting Source I or Source II Preferred Operation Advanced Troubleshooting Continuity Check of High-VoltageSwitches Output of the Control High-VoltageSwitch Manual Control Functions (1) (2) Automatic Control Functions Voltage Readings on TB1 Page Page Page Page FAULT BLOCK ACCESSORY General Description Accessory Settings Operating Instructions Theory of Operation —FaultBlock Accessory Overcurrent Sensing Phase Fault Operation Figure 21a Schematic diagram – fault block accessory (page 1 of 2) Figure 21b Schematic diagram – fault block accessory (page 2 of 2) Ground Fault Operation Reset Circuits Inrush Restraint Feature Testing Fault Block Operation Test Circuit and Equipment Test Procedure and Troubleshooting Test Connections for Step Ground Minimum Actuating Current Automatic Reset of Fault Block Return the Control to Service TABLES WIRING Page Page Page REPLACEMENT PARTS Front panel – replacement parts identification Front Panel Replacement Parts List Back panel – replacement parts identification Back Panel Replacement Parts List Fault block accessory – replacement parts identification Fault Block Accessory Replacement Parts List SAFETY FOR LIFE