American Power Conversion MX28B2400+27V manual Cable Sizing Considerations, Connecting the Cables

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MX28B-1200+27V PRODUCT MANUAL

Rev 1

5.3.2Cable Sizing Considerations

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

5.3.3Connecting the Cables

The battery cable connections are located at the top rear of the unit as shown in Figure 5-5. The battery negative (return bus) and battery positive (+24V) buses each provide two sets of 3/8”-16 holes on a double pattern one-inch and 1 ¾-inch centers for connecting two-hole battery cable lugs. Connect the battery cables as applicable using 3/8”-16 bolts (not provided) and tighten them with a torque wrench to 200 in- lbs.

Battery Positive (+)

Battery Negative (-)

Figure 5-5 Battery Connections

***** CAUTION *****

Make certain that the battery polarity is correct when making connections to the Model MX28B DC power plant. Incorrect connection could cause severe equipment damage.

5.4 DC SYSTEM GROUNDING

THE NEGATIVE LOAD CONNECTION (RETURN BUS) FOR THE POWER PLANT MUST BE CONNECTED TO THE FACILITY MASTER STATION GROUND. THE CONNECTION SHOULD BE MADE ON THE RETURN BUS IN THE BASE UNIT DISTRIBUTION AREA. DETAILS FOR THIS CONNECTION SHOULD BE PROVIDED IN THE SITE ELECTRICAL GROUNDING PLANS.

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Contents Model MX28B1200/2400+27V DC Distribution Options +24V Battery Temperature ProbeDescription Part Number LVD Options +24VRevision Date Description 09/12/2001 Initial releaseTable of Contents SETUP, ADJUSTMENTS, and Operation Page Inspection upon Receipt of Goods PrecautionsIntroduction GeneralConcealed Damage Return of Damaged GoodsWarranty Repair or Replacement Warranty ReturnsGeneral Provisions Exclusions and Limitations Description MX28B-1200/2400+27VMX28B1200/2400+27V System Diagram Rectifiers Power Output CapacityConverters AC Input Power Control UnitBattery connections +24V DC Distribution48 V DC Distribution from Converters Optional DC DistributionMechanical EnvironmentalCompliance Recommended Tools Safety PrecautionsPreparation Recommended Test EquipmentRoom/Locations MountingAC Service and Ground Connections VentilationBattery Disconnect Connecting the Cables Cable Sizing ConsiderationsRectifier Installation Converter InstallationAlarm Connections Alarm Interface PC BoardExternal Alarm Inputs Alarm OutputsConnecting The Loads DC Circuit BreakersInstallation of Circuit Breakers 2.2 -48V Circuit Breaker Load ConnectionsBattery Temperature Probe Installation Power-Up and CheckoutApply AC Power System Parameters Verification/AdjustmentFull System Power Up SETUP, ADJUSTMENTS, and Operation User InterfaceAlarm Output Relays External Alarm InputsSnmp Interface Parameter Locations, Descriptions, and Default Values Status AlarmsSystem SET-ALM OUT-RLY RLY-MAP Setup PINDate AliasParam DiagModules Rect SET-ALM InfoCirbkr SET-ALM Fuse SET-ALMBatt SET-ALM Alias Fuse LVD SET-ALMComp PIN OEM MX28B-1200+27V Product Manual RevParameter Description Display Screens Default Settings Conv LV Alm OFF 40.0 CBatt Disc Alm m+ Conv Fail Safem+ Cir Bkr 1 Alm m+ Out-Rly LVD1 LVD2

MX28B2400+27V, MX28B1200 specifications

The American Power Conversion (APC) MX28B1200 and MX28B2400+27V are advanced power management solutions designed to deliver superior reliability and performance for critical applications. These models are an integral part of APC’s extensive range of uninterruptible power supplies (UPS), catering specifically to high-performance environments such as data centers, server rooms, and industrial systems.

One of the standout features of the MX28 models is their robust power output capability. The MX28B1200 offers a 1200VA power rating, while the MX28B2400+27V boasts a substantial 2400VA rating. This impressive output ensures that connected equipment remains operational during power outages, providing essential backup support and minimizing downtime.

Another key characteristic is their advanced battery management technology, which incorporates intelligent charging systems to extend battery life and improve overall efficiency. This technology helps optimize the charging process, ensuring that the batteries are always in top condition and ready to supply power when needed.

The MX28B series also integrates smart LCD displays that provide real-time information on power conditions, battery status, and system performance. This user-friendly interface allows administrators to monitor the UPS at a glance, facilitating easier management and quicker response times in case of any issues.

In addition to reliable power delivery, the MX28 models emphasize scalability and flexibility. They are designed to support a variety of configurations and are compatible with a range of external battery packs. This ability to adapt means businesses can expand their power capabilities without overhauling their existing systems.

Furthermore, the MX28B series includes advanced protection features against power surges, voltage fluctuations, and other electrical disturbances. This ensures the safety of connected devices, safeguarding against potential damages and enhancing the overall integrity of critical operations.

The design of the APC MX28 models prioritizes efficiency, compliance with global energy standards, and reduced operational costs. This focus on efficiency not only leads to savings but also aligns with sustainable practices, making them an ideal choice for environmentally conscious organizations.

Overall, the APC MX28B1200 and MX28B2400+27V represent a significant advancement in UPS technology, combining power reliability, intelligent management, and environmentally friendly design to support a wide array of demanding applications across various industries.
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