American Power Conversion MX28B2400, MX28B4800 System Voltage Test, Rectifier Current Test

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a)DC Voltage Rating.

b)DC Current Rating

c)Interrupting Current Rating

Battery Visual and Safety Inspection

1.Check that the battery temperature probe is firmly attached to the battery.

2.Check the mechanical integrity of the battery framing, racking, or cabinet. Tighten where necessary.

3.If there is a battery disconnect device fitted, ensure that it is properly connected and protected.

4.Check the general appearance and cleanliness of the battery. Clean if necessary. Use only approved cleaning materials.

5.Visually inspect each cell for the following, and clean and neutralize if necessary. Document discrepancies on Site form accordingly.

a.Cracks.

b.Case leaks.

c.Post-seal leaks.

d.Pressure relief valve leaks (VRLA only).

e.Case swelling (VRLA only).

f.Terminal corrosion and connector corrosion.

6.Check the torque of all battery inter-cell connector in accordance with specifications. Re- torque if necessary (annual only).

7.Measure and record ambient temperature.

7.3.Test

System Voltage Test

Verify with a voltmeter directly attached to the DC bus that the system voltage is correct. If the voltage is off by more than 0.1V recalibrate the controller with the OEM/R Offset setting.

System voltage should also agree with the battery float voltage set up in the battery parameters section. The system may be off because of battery temperature compensation or battery recharging.

Rectifier Current Test

1.Insert voltmeter probe between I+ and common jack on front of each rectifier.

2.Record current for each rectifier using the formula – Voltage X 10amps/volt.

3.Rectifier current displayed under Rectifier/Info should agree with the recorded current.

MX28B1200/2400 MX28B1200/4800 –48 VDC User’s Manual

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Contents VDC Power Systems Table of Contents Commissioning and Preventive Maintenance APC Worldwide Customer Support Limited Product Warranty Revision Date Description Revision HistoryGeneral Precautions Safety FirstIntroduction How to Use This ManualGeneral Information 1 MX28B-1200 -48 VDC Power Plant Rectifier Bay 2 MX28B Block Diagram Mechanical Installation InstallationUnpacking Equipment Room / LocationMounting Power Bus Connections2 MX28B-1200-2400 has a maximum 5 Circuit Breaker / LVD Expansion Board Circuit Breaker/LVD Ribbon Cable ConnectionsFuse Alarm Ribbon Cable Connections AC Power ConnectionsVentilation 1 AC Input Wiring Planning the Battery Installation Battery Connections1 Battery Cable Connection Locations Connecting the Battery CablesDC System Grounding 2 Battery Probe ConnectionDC Plug-in Circuit Breakers DC Power Output Over-Current ProtectionBreaker Part Number Rating 2 Plug-in Circuit Breakers 4 Bolt-in Circuit Breakers DC Bolt-in Circuit Breakers5 Telecom Fuses Telecom FusesPlug-in Circuit Breaker Installation Installation of Circuit Breakers and Fuses2 Circuit Breaker Alarm Wiring Bolt-in Circuit Breaker InstallationGMT Fuse Installation Telecom Fuse InstallationCable Size Considerations Load ConnectionsCircuit Breaker Connections 1 to 50 Amps Circuit Breaker Connections 60-100 AmpsGMT Fuse Connections Monitoring and Relay Output ConnectionsFront Panel DB9 Connection Smart Cable DB9 ConnectionRelay Output Connections RJ45 Ethernet ConnectorNO-NC-C External Alarm Input ConnectionsRectifier Module Installation Electrical Installation Commissioning and Preventive MaintenanceBattery Visual and Safety Inspection Pre-Commissioning InspectionCommissioning AC Power UpInitial Set-up Battery Power Up DC Power UpRectifier Test LVD TestCircuit Breaker/ Fuse Test Battery Temperature CompensationUser Inputs Output RelaysFinal Inspection Technical Description OperationRectifier Management System Output Capacity System ManagementSystem Voltage Control System CurrentSystem Status and Alarm Reporting Battery ManagementBattery Charging and Protection DC DistributionBattery/Load Low Voltage Disconnect Controls and IndicatorsFront Panel User Interface Parameter Locations, Descriptions, and Default Values Status Alarms System Modules Batt PIN OEMNo Alarms Alarm ItemAddress SwitzerBatt HT Thr Batt HT Alm70.0 C Batt HV AlmMajor Cir Bkr 1 Alm m+Cir Bkr 72 Almm+ Comp HkneeFuse 16 Alm Fuse 1 AlmHw Batt C Almm+ MinorLVD Option LVD Reset48.00 LVD TripSec Out-Rly 1 Dly m+Out-Rly 6 Dly m+ Relay MajorRect 1 Desc DisableMRF28H54 Rect 1ofN Almm+Sys HV Thr Sys HV AlmSys LT Alm Sys LT Thr90025 TimeControl Unit Menu Structure SYS MS System Module SET-ALM Setup DAV 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 SYS Sysin Modrec AM Info Modfuse LM Alias Fuse MOD Modlvd Modlvd LM Param Front Panel LED Indicators Alarm Outputs Output RelaysSection External Alarm Inputs Input Relays Remote Monitoring Command and Monitoring ProtocolDescription Physical ConnectionsSystem Visual and Safety Inspection Preventive MaintenanceEquipment InspectionSystem Voltage Test TestRectifier Current Test System Temperature Test Rectifier Alarm TestBattery Current Test Rectifier Current Share TestBattery Preventive Maintenance Procedure Battery Temperature TestFinal Inspection AC Input Specifications1MRF28H54BV Rectifiers 1MRF28H54BV50 RectifiersRectifiers VDCPower Shelf Control Unit Environmental MechanicalCompliance US and Canada APC Worldwide Customer SupportToll Free WorldwideLimited Product Warranty