Liebert SmartSwitchTM operation manual Specifications, Introduction

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1.0INTRODUCTION

The SmartSwitch™ is an automatic transfer switch designed to provide fast automatic transfers between two independent, synchronous AC power sources to provide continuity of AC power to critical equipment, such as information technology equipment, despite irregularities in either of the two AC input power sources. The transfer is accomplished with sense and transfer times of less than 6 milliseconds. The SmartSwitch is available in a 2, 3, or 4 pole configurations, with ampacities of 13, 15, 20, 25, 30, 50, or 60 amps, in a floor, wall, or rack mount packages. Inputs may be hardwired or plug connected to the two input branch circuits. Outputs may be receptacles or hardwired connected to the load equipment.

The SmartSwitch consists of two modules, a fixed module containing the input and output connec- tions and bypass switch with a compartment that holds the plug-in and removable electronics/ switching module. Figure 1 shows a typical one-line schematic diagram of the SmartSwitch.

Figure 1 Typical SmartSwitch One-Line Diagram

1.1Specifications

1.1.1General Specifications

•Manual and Automatic Transfers.

•Sense and Transfer Time: Less than 6 milliseconds.

•Break-Before-Make Switching.

•Selectable Preferred Source.

•Selectable Auto/Manual Retransfer.

•Retransfer Time Delay: 1 to 60 seconds adjustable.

•In-Phase Transfer Window: 1 to 20 degrees adjustable.

•Output Overload Transfer Inhibit: 1 to 10 times full load current adjustable.

•Programmable Switch Self Test.

•Convection Cooling.

2 Introduction

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Contents SmartSwitch Power ProtectionPage Table of Contents Figures Important Safety Instructions Specifications IntroductionElectrical Specifications Designation Phase Neutral Gnd Poles Amps Type Refer to SmartSwitch RatingsConnector Receptacle Voltage No. of Conductors EnclosureUnpacking and Installation Location ConsiderationsInput and Output Power Connections Wire Size Tightening TorqueLb.-in N-m 17.25 18.5 469 Typical 25 to 60 Amp SmartSwitch Underfloor / Wallmount Unit Typical Input and Output Power Connections Control Wiring Connections GroundingSmartSwitch Status Indicators Description of SmartSwitch OperationStatus Indicators Indicator DescriptionRS-232 Ascii Communication Port Customer Commands RS-232 Communications PortExample View Status Response Example View Settings Response Example View Event Log ResponseLogged Events include Bypass/Transfer Control Switch Operator ControlsOperating Guidelines Operating Guidelines Maintenance Maintenance Automatic Transfer Switch Technical Support
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