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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Liebert 300, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
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- informations concerning technical data of Liebert 300
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Table of contents for the manual
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Page 1
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 SHOUL D HANDLE THIS EQUIPMENT. DISCONTINUED PR ODUCT[...]
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Page 2
Series 300 Load Bus Synchronization Table of Contents Section 1 Introduction 1.0 System Description ................................................................................................ 1 Section 2 Theory of Operation 2.1 General Description ................................................................................................ [...]
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Page 3
Series 300 Load Bus Synchronization 1 SECTION 1 INTRODUCTION 1.0 SYSTEM DESCRIPTION The Liebert Load Bus Sync™ (LBS ) option keeps the output of two indep endent Uninterruptible Pow er 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 bot[...]
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Page 4
Series 300 Load Bus Synchronization 2 SECTION 2 THEORY OF OPERATION 2.1 GENERAL DESCRIPTION The Liebert Series 300 Load Bus Sync (LBS) option works by monitoring the syn c reference signals of two UPS modules, each equipped with a specially designed interface. The LBS remains dormant until the outputs of the UPS modules drift more than a predetermi[...]
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Page 5
Series 300 Load Bus Synchronization 3 D. Operates the flashing warning light on the front panel o f the slave UPS indicating that the Main Rotary Switch should not be operated while sync is bei ng acquired with the master UPS. 2.4 SYSTEM OPERATION The Series 300 LBS option perfor ms the following functions: A. Continuously senses the phase relation[...]
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Page 6
Series 300 Load Bus Synchronization 4 SECTION 3 OPERATION 3.1 OPERATOR CONTROLS 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 equippe d UPS module has one indicator light mounted on the bezel below the front display pan[...]
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Page 7
Series 300 Load Bus Synchronization 5 indicator will be of f during the synchronization process and turn back on when the process is completed. 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 again st operating the Main Rotary Switc[...]