Liebert Series 300 Operator's Manual
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Liebert Series 300 Operator's Manual

Liebert Series 300 Operator's Manual

Power protection three phase uninterruptible power system, load bus synchronization option
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Download this manual See also: Installation, Operation & Maintenance Manual
DISCONTINUED
PRODUCT
OPERATOR'S
MANUAL
WARNING
READ BEFORE
HANDLING
OR INSTALLING.
ONLY QUALIFIED
PERSONNEL
SHOULD HANDLE
THIS EQUIPMENT.
POWER PROTECTION
Series 300
Three Phase
Uninterruptible
Power System
Load Bus
Synchronization
Option

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Summary of Contents for Liebert Series 300

  • Page 1 DISCONTINUED PRODUCT POWER PROTECTION OPERATOR’S MANUAL Series 300 Three Phase Uninterruptible Power System Load Bus Synchronization Option WARNING READ BEFORE HANDLING OR INSTALLING. ONLY QUALIFIED PERSONNEL SHOULD HANDLE THIS EQUIPMENT.

  • Page 2: Table Of Contents

    1.0 System Description ....................1 Section 2 Theory of Operation 2.1 General Description....................2 2.2 Load Bus Sync Controller ..................2 2.3 Series 300 LBS Module Interface ................2 2.4 System Operation ....................3 Section 3 Operation 3.1 Operator Controls ....................4 3.2 Operator Procedures ....................

  • Page 3: Section 1 Introduction

    INTRODUCTION SYSTEM DESCRIPTION The Liebert Load Bus Sync™ (LBS) option keeps the output of two independent Uninterruptible Power Systems (UPSs) in sync, even when the two UPSs are operating from two different power sources. Any UPS will typically sync to its own bypass source. As long as both UPSs are tied to the same input and bypass sources, they will automatically stay in sync.

  • Page 4: Section 2 Theory Of Operation

    (DMS). The other UPS module will become the Designated Slave System (DSS). SERIES 300 LBS MODULE INTERFACE In order for the LBS controller to send and receive signals from the Series 300 modules, each module must have the proper interface installed. The Series 300 interface consists of two main components as...

  • Page 5: System Operation

    Main Rotary Switch should not be operated while sync is being acquired with the master UPS. SYSTEM OPERATION The Series 300 LBS option performs the following functions: Continuously senses the phase relationship between the outputs of the two UPS modules that make up the system.

  • Page 6: Section 3 Operation

    Operation of the LBS has deliberately been kept as simple possible. There are only three controls and five indicator lights on the SERIES 300 LBS Controller enclosure. Each LBS equipped UPS module has one indicator light mounted on the bezel below the front display panel. The indicators are: LBS Enabled.
  • Page 7 When the slave system is in the process of synchronizing to the master system, the Warning Indicator on the slave system will be flashing on and off. This is to warn against operating the Main Rotary Switch. SL-24536 (5/00) Series 300 Load Bus Synchronization...

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