Cisco Systems 159330, 124792, 124778 manual Introduction, System Description

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C H A P T E R 1

Introduction

The Cisco AC/DC Power System is a rack-mounted, AC-to-DC power system that provides a scalable, compact solution for powering optical platforms at site locations with only AC power available. The system accepts AC inputs and converts them to nominal -48 VDC for DC-powered equipment. This compact system provides N+1 redundancy in rectifiers, automated alarm generation, and integrated DC power distribution through a GMT fuse panel and available four-position 1RU circuit breaker distribution shelf. This system provides nomimal -48 VDC service to DC-powered network elements (NEs) through redundant feeds, complementing the resiliency of Cisco's line of Carrier Class optical products.

The Cisco AC/DC Power System is designed to be mounted in a variety of rack types including IEC, ANSI (19 inches), ANSI (23 inches), and ETSI configurations and requires only 177.8mm (7.0in.) of vertical space for medium and large systems and 133.4mm (5.25in.) for small systems. The system is based on the CSCO-PWR-RECT rectifier module and allows three different configurations based on load requirements that range from 13.3A to 96A. Additionally, power distribution is accomplished using a GMT fuse block and/or an optional 1 RU distribution shelf (depending on system size).

The Cisco AC/DC Power System offers these features:

•AC input (A) 100-120VAC

•AC input (B) 200-250VAC

•Nominal -48 VDC rectifier providing up to 1600W

•Front access design

•Temperature hardened -40ºC to +55ºC

•Available in 19in. (IEC and ANSI), ETSI (21in. inside [610mm]), or 23in. mounting arrangements

•Available external distribution shelf with up to 4 load circuit breakers

•10 position GMT fuse panel

•Active high power factor correction

•90% or greater efficiency

•Front panel LCD interface

1.1System Description

This section provides descriptions of the system shelf, rectifier modules, GMT fuses, and the 1 RU distribution shelf.

Cisco AC/DC Power System User Guide, R1.0

May 2006

1-1

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Contents Corporate Headquarters Cisco AC/DC Power System User GuideCisco AC/DC Power System User Guide, Release N T E N T S System Operation Add Modules Contents Cisco AC/DC Power System User Guide, R1.0 Two-Inch Clearance Around Front Ventilation Opening Viii Supplied Materials for the System Shelf Tables Cisco AC/DC Power System User Guide, R1.0 Document Organization Document ObjectivesAudience Convention Application Document ConventionsObtaining Documentation Where to Find Safety and Warning InformationCisco.com Ordering DocumentationCisco Technical Support Website Documentation FeedbackObtaining Technical Assistance Definitions of Service Request Severity Submitting a Service RequestObtaining Additional Publications and Information System Description IntroductionLCD System ShelfIntroduction Rectifier Modules Rectifier Modules4 1 RU Distribution Shelf GMT Fuses1 RU Distribution Shelf System ConfigurationsElectrical Value General SpecificationsFrom Wire Gauge Ampacity Protection Description Status & Alarms DescriptionMechanical Description Environment DescriptionCompliance Description Safety RecommendationsOperating Temperature Warnings Installation WarningTwo-Inch Clearance Around Front Ventilation Opening Electrical Safety WarningsIntroduction Electrical Safety Warnings May Tools Required Pre-InstallationGround Symbol Description Qty Use Installation and Commissioning ChecklistInstallation Materials Install AC/DC Power System Components Cisco AC/DC Power System Front View Install the System ShelfInstalling the System Shelf 1 RU Distribution Cable Dressing Install the 1 RU Distribution ShelfInstall the Communications Cabling Optional Install the DC Power Cabling Optional Installing 1 RU DC Cabling Install the Ground CableInstall the Cabinet/Rack Ground Install the 1 RU Distribution Shelf Ground 11 Installing the 1 RU Distribution Shelf Ground Install AC Power CablesSystem Installation Install AC Power Cables 12 Installing the AC Cable Shelf 13 Routing AC Cables Install the Rectifiers 14 Installing a Rectifier 15 Removing a Rectifier Blank Faceplate Install Circuit Breakers16 Circuit Breaker On/Off Positions System Size 18 Installing a Circuit BreakerInstall the Alarm Cable 19 Removing the Controller Faceplate Jumper System with Without LCD Alarm DesignationWire Gauge Stranded Applications Install Load-and-Return ConnectionsInstall GMT Fuse Connections 23 Installing GMT Cabling Install 1 RU Distribution Shelf Load ConnectionsA2 A1 Return Load Small to Medium System Upgrade System UpgradesSmall to Large System Upgrade Medium to Large System UpgradeMay Replace the 1 RU Distribution Shelf SafetyComponent Replacement Removing the 1 RU DC Cable Removing the 1 RU Distribution Shelf Replace the Controller TrayRemoving the Controller Faceplate J15 terminal block J14/J13 terminal blocks Circuit Breaker On/Off Positions Replace Circuit BreakersRemoving the 1 RU Distribution Shelf Faceplate Removing a Circuit Breaker Replace a RectifierRemoving a Rectifier 10 Removing a GMT Fuse Replace GMT FusesGeneral Information System CommissioningBasic Controller Functions Alarm Interface Board and ConnectionsRemove Modules May System Troubleshooting Tripped breaker Fuse blown Module Locations Page Description Part Number System Parts ListPage Statement 12-Power Supply Disconnection Warning Translated Safety WarningsAppendix a Translated Safety Warnings Statement 43-Jewelry Removal Warning Appendix a Translated Safety Warnings Appendix a Translated Safety Warnings Appendix a Translated Safety Warnings Appendix a Translated Safety Warnings Page Statement 1017-Restricted Area May Statement 1024-Ground Conductor Appendix a Translated Safety Warnings Statement 1030-Equipment Installation Statement 1033-SELV-IEC 60950 DC Power Supply Statement 1047-Overheating Prevention Appendix a Translated Safety Warnings Appendix a Translated Safety Warnings