American Power Conversion MX28B400 user manual Plug-in Circuit Breaker Installation

Page 16

Plug-in Circuit Breaker Installation

CAUTION During circuit breaker installation, carefully align the breaker alarm terminals with the alarm terminal board to avoid breaker terminal damage.

1)Remove the circuit breaker cover panel and the plastic cover(s) from the desired location(s).

2)Install the circuit breaker(s) by snapping the top terminal onto the upper bus bar and rotating the unit down until the second terminal snaps onto the breaker termination post as shown in Figure 3.6-3The breaker alarm terminals are designed to make contact with the alarm terminal board as the breaker is snapped into place.

3)Reattach the circuit breaker cover panel.

NOTE: Circuit breaker alarm contacts close when the circuit breaker is tripped but not when it is turned OFF.

Figure 3.6-3. Installation of Circuit Breakers

Load Cable Size Considerations

The DC load cable(s) should be sized sufficiently large to limit the voltage drop from the MX28B DC power plant to the loads per system design requirements. The cable(s) must also carry the full load current during battery operation. During battery operation the voltage will be lower and for constant power loads, therefore the current will typically be higher. If assistance is required to determine the necessary cables for the application, contact your sales representative or APC.

MX28B400 +24 VDC User’s Manual

Page 12

Image 16
Contents Page Table of Contents Remote Monitoring Revision History Revision Date DescriptionSafety First General PrecautionsIntroduction General Information2 MX28B-400 +24 Vdc System Wiring Diagram with Battery LVD How to Use This Manual Installation Mechanical InstallationUnpacking Equipment Room / LocationAC Power Connections VentilationPlanning the Battery installation Battery ConnectionsConnecting the Cables Battery Temperature Probe Installation 2 Battery Temperature Probe InstallationDC System Grounding DC Power Output Over-Current Protection DC Circuit BreakersBreaker Part Number Adaptor Size Rating Plug-in Circuit Breaker Installation Load Cable Size ConsiderationsCircuit Breaker Connections 1 to 50 Amps Circuit Breaker Connections 60-100 AmpsMonitoring and Relay Output Connections GMT Fuse OptionFront Panel DB9 Connection Smart Cable DB9 ConnectionRJ45 Ethernet Connector Relay Output ConnectionsExternal Alarm Input Connections NO-NC-CRectifier Module Installation Initial Power-Up and CheckoutSystem Parameters Verification/Adjustment Battery Maximum Recharge Rate default = 12AFull System Power Up Technical Description OperationRectifier Management System Status and Alarm Reporting System ManagementSystem Output Capacity System Voltage ControlBattery Management Battery Charging and ProtectionBattery Temperature Compensation DC DistributionBattery/Load Low Voltage Disconnect Controls and IndicatorsFront Panel User Interface Status Alarms System Modules Batt PIN OEM Parameter Locations, Descriptions, and Default ValuesAlarm Item No AlarmsAddress Switzer AvMinor 22.00Batt Max Rechm+ 50 aComp Lknee Comp Method m+Comp TC 00mVFuse 1 Alm Hw Batt C Almm+Hw Batt T Almm+ Hw LVD AlmDisable LVD ResetLamp Test LVD OptionOut-Rly RelayOut-Rly 1 Dly m+ SecRect CL Alm Rect 1 CLRect 1 Curr 24.9Rect Stdby Almm+ Rect 1 StdbyStore Cfg Sys CurrentSys Temp 26.7Sys Voltage Test Maj RlyStatus Alarms Control Unit Menu StructureV e l C o n d L e v e l I r d L e v e l U r t h L e v e l Sysout AP Alias MOD Modrec EM Modules Batt Rect Conv CIR SET-ALM Param MOD Modcir MOD Modlvd MT LVD SET-ALM Param Front Panel LED Indicators Alarm Outputs Output Relays External Alarm Inputs Input RelaysCommand and Monitoring Protocol Remote MonitoringDescription Physical ConnectionsSpecifications AC Input1MRF28H27BV Rectifiers 1MRF28H27BV50 RectifiersDC Output with either Rectifier RectifiersPower Shelf Control Unit PscuEnvironmental MechanicalCompliance APC Worldwide Customer Support Limited Product Warranty