Generac Power Systems RTSJ200A3 Owner's Manual
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Generac Power Systems RTSJ200A3 Owner's Manual

Lts load shed switch
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Owner's Manual
LTS Load Shed Switch
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Summary of Contents for Generac Power Systems RTSJ200A3

  • Page 1 Owner's Manual LTS Load Shed Switch This manual should remain with the unit.

  • Page 2: Table Of Contents

    Table of Contents SAFETY RULES Safety Rules ..........Inside Front Cover General Information ..............2 SAVE THESE INSTRUCTIONS - This manual  1.1 Introduction ................2 contains important instructions that should 1.2 Equipment Description ..............2 be followed during installation and mainte- 1.2.1 Transfer Switch Mechanism ..........

  • Page 3: Safety Rules

    Safety Rules GENERAL HAZARDS Throughout this publication, and on tags and decals affixed to the generator, DANGER, WARNING, CAUTION and NOTE blocks are • Any AC generator that is used for backup power if a NORMAL used to alert personnel to special instructions about a particular (UTILITY) power source failure occurs, must be isolated from operation that may be hazardous if performed incorrectly or care- the NORMAL (UTILITY) power source by means of an approved...

  • Page 4: General Information

    General Information INTRODUCTION 1.2.1 TRANSFER SWITCH MECHANISM This manual has been prepared especially for the purpose of famil- These switches (Figure 1.1) are used with a single-phase system, iarizing personnel with the design, application, installation, opera- when the single-phase NEUTRAL line is to be connected to a tion and servicing of the applicable equipment.

  • Page 5: Load Shed Controller

    General Information 1.2.3 LOAD SHED CONTROLLER Figure 1.2 The primary function of the Load Shed Controller (LSC) is to deter- mine when there is excess load on the generator and has the ability to disconnect the non-essential loads connected to it. Excess load is determined by monitoring the generator supply frequency, if the frequency drops below 58 Hz for more than three (3) seconds, or below 50 Hz for 1/2 second, and the generator is considered...

  • Page 6: Safe Use Of Transfer Switch

    Installation SAFE USE OF TRANSFER MOUNTING Mounting dimensions for the transfer switch enclosure are in this SWITCH manual. Enclosures are typically wall-mounted. See “Installation Before installing, operating or servicing this equipment, read the Diagram”. SAFETY RULES (inside front cover) carefully. Comply strictly with all SAFETY RULES to prevent accidents and/or damage to the equipment.

  • Page 7: Neutral Connections

    Operation CONNECTING CONTROL If ALUMINUM conductors are used, apply corrosion inhibitor to conductors. Tighten terminal lugs to the torque values as noted on WIRES the "Utility Service Disconnect Circuit Breaker", and on the decal Control system interconnections consist of N1, N2 and T1; and located on the inside of the door.

  • Page 8: Lss Manual Operation

    Operation Figure 3.1 — Actuating ATS Transfer Switch Attach handle to the moveable Move handle UP for the contact carrier arm. UTILITY (NORMAL) position. Move handle DOWN for the GENERATOR (STANDBY) position. NOTE: Return handle to storage position in enclosure when finished with manual transfer. •...

  • Page 9: Voltage Checks

    Operation Figure 3.2 — Actuating LSS Transfer Switch Attach handle to the moveable contact carrier arm. Move handle UP for the non-essential loads OFF. Move handle DOWN for the non-essential loads ON. NOTE: Return handle to storage position in enclosure when finished with manual transfer. VOLTAGE CHECKS Turn ON the UTILITY power supply to the LTS using the ...

  • Page 10: Generator Tests Under Load

    Operation GENERATOR TESTS UNDER 3.4.2 AUTO OPERATION AND LOAD SHED FUNCTIONAL TEST LOAD Set the generator’s main circuit breaker to its ON or CLOSED 3.4.1 ATS & CRITICAL LOADS position. Set the UTILITY SERVICE DISCONNECT circuit breaker to the Set the generator's main circuit breaker to its OFF or OPEN ON position.

  • Page 11: Notes

    Notes...
  • Page 12 Notes...
  • Page 13 Notes...

  • Page 14: Installation Diagram

    Installation Diagram 200 Amp Enclosure Drawing 0G8775-B...

  • Page 15: Interconnection Diagram

    Interconnection Diagram Interconnection Drawing 0J0888-D LOAD SHED CONTROLLER...
  • Page 16 Part No. 0H8807 Revision E (08/01/13) Printed in U.S.A.

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