Powerware 1500 VA - 60kVa manual Ferrups External Battery Cabinets On-Site Plans are 7 x

Page 97

SERVICE PLANS

Single-phase

FERRUPS Rack and Tower Base Unit Service Plans (On-site Service is 7 x 24)

 

Contract

Gold Plan

 

Gold Plan Plus

 

On-Site Gold Plan

 

On-Site Gold Plan Plus

Product

Duration

Part Number

List Price

Part Number

List Price

Part Number

List Price

Part Number

List Price

500 - 850 VA

2 YR

2XXGXFERRX850CX

$82

2XXGPFERRX850CX

$708

2OSGXFERRX850CX

$789

2OSGPFERRX850CX

$922

 

3 YR

3XXGXFERRX850CX

$266

3XXGPFERRX850CX

$908

3OSGXFERRX850CX

$934

3OSGPFERRX850CX

$1,473

 

5 YR

5XXGXFERRX850CX

$497

5XXGPFERRX850CX

$1,283

5OSGXFERRX850CX

$1,558

5OSGPFERRX850CX

$2,420

1.15 - 1.4 kVA

2 YR

2XXGXFERR1400CX

$150

2XXGPFERR1400CX

$772

2OSGXFERR1400CX

$885

2OSGPFERR1400CX

$959

 

3 YR

3XXGXFERR1400CX

$424

3XXGPFERR1400CX

$1,068

3OSGXFERR1400CX

$1,283

3OSGPFERR1400CX

$1,593

 

5 YR

5XXGXFERR1400CX

$730

5XXGPFERR1400CX

$1,611

5OSGXFERR1400CX

$2,115

5OSGPFERR1400CX

$2,642

1.8 - 3.1 kVA

2 YR

2XXGXFERR3100CX

$182

2XXGPFERR3100CX

$802

2OSGXFERR3100CX

$1,042

2OSGPFERR3100CX

$1,224

 

3 YR

3XXGXFERR3100CX

$551

3XXGPFERR3100CX

$1,179

3OSGXFERR3100CX

$1,411

3OSGPFERR3100CX

$2,056

 

5 YR

5XXGXFERR3100CX

$1,134

5XXGPFERR3100CX

$1,859

5OSGXFERR3100CX

$2,400

5OSGPFERR3100CX

$3,415

4.3 - 7.0 kVA

2 YR

N/A

N/A

2XXGPFERR7KVACX

$841

2OSGXFERR7KVACX

$1,374

2OSGPFERR7KVACX

$2,273

 

3 YR

N/A

N/A

3XXGPFERR7KVACX

$1,461

3OSGXFERR7KVACX

$1,722

3OSGPFERR7KVACX

$3,095

 

5 YR

N/A

N/A

5XXGPFERR7KVACX

$2,248

5OSGXFERR7KVACX

$2,465

5OSGPFERR7KVACX

$4,737

10 kVA

2 YR

N/A

N/A

2XXGPFERR10KVCX

$873

2OSGXFERR10KVCX

$1,396

2OSGPFERR10KVCX

$2,295

 

3 YR

N/A

N/A

3XXGPFERR10KVCX

$1,749

3OSGXFERR10KVCX

$1,973

3OSGPFERR10KVCX

$3,160

 

5 YR

N/A

N/A

5XXGPFERR10KVCX

$2,784

5OSGXFERR10KVCX

$2,856

5OSGPFERR10KVCX

$4,858

12.5 - 18 kVA

2 YR

N/A

N/A

2XXGPFERR18KVCX

$890

20SGXFERR18KVCX

$1,562

2OSGPFERR18KVCX

$2,436

 

3 YR

N/A

N/A

3XXGPFERR18KVCX

$2,288

3OSGXFERR18KVCX

$2,391

3OSGPFERR18KVCX

$3,499

 

5 YR

N/A

N/A

5XXGPFERR18KVCX

$3,937

5OSGXFERR18KVCX

$3,596

5OSGPFERR18KVCX

$5,646

FERRUPS External Battery Cabinets (On-Site Plans are 7 x 24)

 

GROUP 1

Contract

Gold Plan

 

Gold Plan Plus

 

On-Site Gold Plan

 

On-Site Gold Plan Plus

 

 

Duration

Part Number

List Price

Part Number

List Price

Part Number

List Price

Part Number

List Price

 

21 ME

2 YR

2XXGXFERRXBG1CX

$74

2XXGPFERRXBG1CX

$106

2OSGXFERRXBG1CX

$137

2OSGPFERRXBG1CX

$226

 

 

3 YR

3XXGXFERRXBG1CX

$268

3XXGPFERRXBG1CX

$300

3OSGXFERRXBG1CX

$375

3OSGPFERRXBG1CX

$510

 

 

5 YR

5XXGXFERRXBG1CX

$541

5XXGPFERRXBG1CX

$574

5OSGXFERRXBG1CX

$738

5OSGPFERRXBG1CX

$961

 

GROUP 2

 

 

 

 

 

 

 

 

 

 

8ME EBPS4.3R

2 YR

2XXGXFERRXBG2CX

$79

2XXGPFERRXBG2CX

$111

2OSGXFERRXBG2CX

$153

2OSGPFERRXBG2CX

$240

 

9ME EBPS10

3 YR

3XXGXFERRXBG2CX

$436

3XXGPFERRXBG2CX

$469

3OSGXFERRXBG2CX

$551

3OSGPFERRXBG2CX

$683

 

24ME 1FE

5 YR

5XXGXFERRXBG2CX

$946

5XXGPFERRXBG2CX

$978

5OSGXFERRXBG2CX

$1,140

5OSGPFERRXBG2CX

$1,345

 

25ME 1re

 

 

 

 

 

 

 

 

 

 

GROUP 3

 

 

 

 

 

 

 

 

 

 

2FE 9FE

2 YR

2XXGXFERRXBG3CX

$79

2XXGPFERRXBG3CX

$112

2OSGXFERRXBG3CX

$177

2OSGPFERRXBG3CX

$261

 

16FE 2re

3 YR

3XXGXFERRXBG3CX

$599

3XXGPFERRXBG3CX

$646

3OSGXFERRXBG3CX

$746

3OSGPFERRXBG3CX

$873

 

1rd

5 YR

5XXGXFERRXBG3CX

$1,311

5XXGPFERRXBG3CX

$1,344

5OSGXFERRXBG3CX

$1,560

5OSGPFERRXBG3CX

$1,765

 

GROUP 4

 

 

 

 

 

 

 

 

 

 

EBPS12.5

2 YR

2XXGXFERRXBG4CX

$79

2XXGPFERRXBG4CX

$111

2OSGXFERRXBG4CX

$174

2OSGPFERRXBG4CX

$257

 

EBPS18

3 YR

3XXGXFERRXBG4CX

$378

3XXGPFERRXBG4CX

$411

3OSGXFERRXBG4CX

$511

3OSGPFERRXBG4CX

$641

 

8FE

5 YR

5XXGXFERRXBG4CX

$825

5XXGPFERRXBG4CX

$857

5OSGXFERRXBG4CX

$1,054

5OSGPFERRXBG4CX

$1,261

 

GROUP 5

 

 

 

 

 

 

 

 

 

 

10ME 11ME

2 YR

2XXGXFERRXBG5CX

$147

2XXGPFERRXBG5CX

$181

2OSGXFERRXBG5CX

$234

2OSGPFERRXBG5CX

$317

 

12ME 3FE

3 YR

3XXGXFERRXBG5CX

$1,056

3XXGPFERRXBG5CX

$1,084

3OSGXFERRXBG5CX

$1,243

3OSGPFERRXBG5CX

$1,266

 

4FE 2rd

5 YR

5XXGXFERRXBG5CX

$2,499

5XXGPFERRXBG5CX

$2,347

5OSGXFERRXBG5CX

$2,682

5OSGPFERRXBG5CX

$2,799

 

GROUP 6

 

 

 

 

 

 

 

 

 

 

13ME

2 YR

2XXGXFERRXBG6CX

$158

2XXGPFERRXBG6CX

$190

2OSGXFERRXBG6CX

$252

2OSGPFERRXBG6CX

$336

 

5FE

3 YR

3XXGXFERRXBG6CX

$1,308

3XXGPFERRXBG6CX

$1,343

3OSGXFERRXBG6CX

$1,419

3OSGPFERRXBG6CX

$1,550

 

3rd

5 YR

5XXGXFERRXBG6CX

$2,868

5XXGPFERRXBG6CX

$2,903

5OSGXFERRXBG6CX

$3,046

5OSGPFERRXBG6CX

$3,246

 

GROUP 7

 

 

 

 

 

 

 

 

 

 

10FE

2 YR

2XXGXFERRXBG7CX

$194

2XXGPFERRXBG7CX

$227

2OSGXFERRXBG7CX

$290

2OSGPFERRXBG7CX

$382

 

17FE

3 YR

3XXGXFERRXBG7CX

$1,355

3XXGPFERRXBG7CX

$1,388

3OSGXFERRXBG7CX

$1,477

3OSGPFERRXBG7CX

$1,648

 

 

5 YR

5XXGXFERRXBG7CX

$2,994

5XXGPFERRXBG7CX

$3,027

5OSGXFERRXBG7CX

$3,202

5OSGPFERRXBG7CX

$3,409

 

GROUP 8

 

 

 

 

 

 

 

 

 

 

14ME 6FE

2 YR

2XXGXFERRXBG8CX

$315

2XXGPFERRXBG8CX

$338

2OSGXFERRXBG8CX

$411

2OSGPFERRXBG8CX

$494

 

11FE 12FE

3 YR

3XXGXFERRXBG8CX

$2,359

3XXGPFERRXBG8CX

$2,351

3OSGXFERRXBG8CX

$2,532

3OSGPFERRXBG8CX

$2,574

 

18FE 19FE

5 YR

5XXGXFERRXBG8CX

$5,147

5XXGPFERRXBG8CX

$5,180

5OSGXFERRXBG8CX

$5,332

5OSGPFERRXBG8CX

$5,563

 

GROUP 9

 

 

 

 

 

 

 

 

 

 

15ME 7FE

2 YR

2XXGXFERRXBG9CX

$385

2XXGPFERRXBG9CX

$417

2OSGXFERRXBG9CX

$480

2OSGPFERRXBG9CX

$563

 

13FE 20FE

3 YR

3XXGXFERRXBG9CX

$3,241

3XXGPFERRXBG9CX

$3,274

3OSGXFERRXBG9CX

$3,343

3OSGPFERRXBG9CX

$3,473

 

 

5 YR

5XXGXFERRXBG9CX

$7,202

5XXGPFERRXBG9CX

$7,223

5OSGXFERRXBG9CX

$7,344

5OSGPFERRXBG9CX

$7,552

 

GROUP 10

 

 

 

 

 

 

 

 

 

 

14FE

2 YR

2XXGXFERRBG10CX

$667

2XXGPFERRBG10CX

$700

2OSGXFERRBG10CX

$773

2OSGPFERRBG10CX

$856

 

21FE

3 YR

3XXGXFERRBG10CX

$5,348

3XXGPFERRBG10CX

$5,380

3OSGXFERRBG10CX

$5,449

3OSGPFERRBG10CX

$5,579

 

 

5 YR

5XXGXFERRBG10CX

$11,909

5XXGPFERRBG10CX

$11,941

5OSGXFERRBG10CX

$12,059

5OSGPFERRBG10CX

$12,266

 

GROUP 11

 

 

 

 

 

 

 

 

 

 

15FE

2 YR

2XXGXFERRBG11CX

$1,014

2XXGPFERRBG11CX

$1,046

2OSGXFERRBG11CX

$1,120

2OSGPFERRBG11CX

$1,203

 

22FE

3 YR

3XXGXFERRBG11CX

$8,268

3XXGPFERRBG11CX

$8,301

3OSGXFERRBG11CX

$8,343

3OSGPFERRBG11CX

$8,473

 

 

5 YR

5XXGXFERRBG11CX

$18,423

5XXGPFERRBG11CX

$18,455

5OSGXFERRBG11CX

$18,520

5OSGPFERRBG11CX

$18,727

www.powerware.com 1.800.356.5794

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Image 97
Contents Reference Guide & Price Book Overview of Revisions Table of Contents Powerware Reference Guide and PricebookPXL PVL Additional Products and ServicesRestriction of Hazardous Substances Directive Easy on Your Wallet, Better for the EnvironmentPowerware Series 3 UPS Power ProtectionPowerware Series 5 UPS Powerware Series 9 UPSPower Problem Definition Cause Power Problems and Their UPS SolutionsSolution Single-phase Series 3 UPS Phase Series 5 UPS Single- and Three-phase SeriesWhich UPS is Right for Your Customer? Selecting a UPSAll Batteries Need Charging ABM TechnologyBatteries Take Time To Recharge All Batteries Will Eventually FailWhat’s the Harm in Harmonics? Harmonic DistortionComputer loads Series 9 and Ferro UPSs Address Harmonics Single-phase Powerware Product Warranty Overview SINGLE-PHASE Powerware Product WarrantyPowerware Enclosures Powerware Data Center SolutionsPowerware Enclosures Powerware Enclosure OptionsPartition Wall for bayed enclosures Shipping Dimensions List Description Part Number Pkg77.0 x 80.0 x 42.0 x 10.0 $300 Roof Mount Cable Manager 24.0 x 8.0 x 26.0 x 10.0 x $100Powerware Enclosure Power Distribution Unit ePDU Powerware Datacenter SolutionsPowerware ePDUs Connection Function Cord Output Receptacles Quantity Max Input Dimensions List Part NumberPWATSSC20001 Powerware Environmental Rack Monitors Powerware Environmental Rack Monitor ERM103005895 X 2.8 x $35 100-250V AC, 50/60Hz Main Remote Power Panel Powerware Remote Power Panel RPPOptions Other Adders Service PlansStandard Nema Cable Powerware UL Listed Power Distribution CablesNema IG isolated ground Cable 9C54U2/C75 Russellstoll & iec CABLEsHBL360C6W HBL460C9WField wire CABLEs Powerware SINGLE-PHASE SeriesSoftware Powerware 5110 International Models 230V, 50/60 HZ Powerware 5110 Domestic Models 120V, 50/60 HzPowerware 5110 Battery Backup Times in minutes Line-interactive UPS 500-1500 VAPowerware 5115 International Tower Models 230V, 50/60 Hz1 Powerware 5115 Domestic Tower Models 120V, 50/60 Hz1Powerware 5115 Battery Backup Times in minutes Line-interactive UPS 500-1400 VAPowerware Power Distribution Unit PDU Powerware 5115 RackmountPowerware Enclosure Software and Connectivity OptionsPowerware 5125 Domestic Tower Models 120V, 50/60 Hz Powerware 5125 TowerPowerware 5125 Options Line-interactive UPS 1000-2200 VAPowerware 5125 Domestic RACK/TOWER Models 120V, 50/60 Hz Powerware 5125 Rack/TowerLine-interactive UPS 1000-3000 VA 3000 2400Powerware 5125 Rackmount Models Powerware 5125 RackmountWith Factory-Installed ConnectUPS Web/SNMP Card POWERWARE 5125 Rackmount OptionsLoad VA/Watts Powerware 5125 Rackmount Battery Back UP Times in minutesPowerware 9120 International Models 230V, 50/60 Hz Powerware 9120 Domestic Models 120V, 50/60 HzPowerware 9120 Options Online UPS 700-3000 VAPowerware 9125 Domestic Models 120V, 50/60 Hz Powerware 9125 700-3000 VA Rack/TowerPowerware 9125 Global Models 208V, 230V, 50/60 Hz Powerware 9125 International Models 230V, 50/60 HzPart Dimensions Weight List Description Number Powerware 9125 OptionsPowerware 9125 Battery Backup Times in minutes Powerware 9125 700-3000 VA EBM Backup TimesPowerware 9125 EBC Backup Times in minutes1 Watts +1 EBC-72 +2 EBC-72s +3 EBC-72s +4 EBC-72sPowerware 9125 RACK/TOWER Models Powerware 9125 5000-6000 VA Rack/TowerOnline UPS 5000-6000 VA Powerware 9125 5000-6000 VA Battery Backup Times in minutes1 Extended Power Distribution Module Epdm SINGLE-PHASE EpdmModel Input Output Slot List Price Powerware 9140 Options Powerware 9140 RackmountPowerware Enclosure Power Distribution Units ePDUs Online UPS 7.5-10 kVAPowerware 9140 Battery Backup Times in minutes1 PowerwAre 9140 Spare PartsPowerware 9155 Models Single-phase Online UPS 8-15 kVABUILT-IN Connectivity Options Powerware 9155 Options Output RECEPTAClES and Maintenance BypassPowerware 9155 Spare Parts Powerware 9155 Upgrades Powerware 9155 Spare Parts+3 EBM +4 EBM Battery +1 EBM +2 EBM PW9155 Spares Kit 106711155 $7,805Powerware 9170+ Models Powerware 9170+ Rack/TowerOnline UPS 3-18 kVA Part Number W x D, inches Price Powerware 9170+ Pre-configured SystemsPW12S12K PW12S15KOutput Dimensions Weight List Model Number Power Rating Powerware 9170+Receptacles W x D, inches Price Customizable Input Plug Options1 Input Plug Power Module Type CTO Digit List PriceString Customizable Receptacle Options Output Receptacle Power Module Type # of Bays CTO DigitPowerware Ferrups FE 60 Hz SINGLE-PHASEFerroresonant UPS 500 VA-3.1 kVA Powerware Ferrups FE 60 HzModel FE7 7 kVA/5 kW Ferroresonant UPS 4.3-18 kVAFerroresonant UPS 1.4 kVA-7 kVA Powerware Ferrups Rack Series 60 HzPowerware Ferrups Rack Series 60 Hz Model FER7 7 kVA/5 kWPowerware Ferrups External Options & Accessories Spare Parts Kits1 Maintenance Bypass SwitchesPart Number Description Application Application Low Voltage Part NumberPowerware BladeUPS THREE-PHASE SeriesThree-phase Online 12-60 kVA Powerware BladeUPS 12-60 kVAPowerware Rack Power Module Configurator Powerware Rack Power Module RPMDescription Quantity Part List Value PriceLoad Internal Load % Battery +1 EBM +2 EBM +3 EBM +4 EBM Powerware BladeUPS Battery Backup Times in minutesInternal UPS Models Powerware 9355 10-15 kVA Three-phase Online 10-15 kVAPowerware 9355 Options Powerware 9355 Bypass Cabinets Powerware 9355 10-15 kVASURGE PROTECTION Output Receptacles+3 EBM +4 EBM Watt+1 EBM +2 EBM +3 EBM Powerware 9355 20-30 kVA Three-phase Online 20-30 kVAKVA 18 kW Lb3 Cabinets PricePowerware 9355 Options Powerware 9355 20-30 kVADimensions Weight List Model Number Rating Voltage Bypass CabinetsPowerware 9355 Battery Backup Times in minutes Identify power quality problems Power Quality Metering ProductsDetect and record high speed transients Monitor circuit loading Power Xpert 4000/6000/8000 MetersManage energy utilization Part Number List PricePower Xpert 4000/6000/8000 Accessories Powerware LanSafe Software Powerware Software SuiteEaton Power Xpert Software SoftwareDesktop Power Management and Network Monitoring Tool Powerware Extensions for IBM DirectorSoftware Products MultiView Network Management System integration softwarePowerVision v4.x Software Products Eaton power xpert SoftwareConnectivity Powerware Expansion Chassis & Modbus CardConnectivity Products ConnectUPS Web/SNMP DevicesEnvironmental PowerVision PowerVision Data AcquisitionTerminalConnectivity Products ConnectUPS-X ConnectUPS-BD ConnectUPS-EOther Connectivity Products Powerware 5115 1U RM Powerware 9170+ Expansion ChassisSerial Cards Relay ProductsConnectivity Options PowerVision Connectivity ProductsWeb/SNMP Products Software Suite CDAccessories Primary Protection for Service EntranceResidential Products Residential Surge Products Stage 1 Chsptm SeriesSecondary Protection for Point-of-Use Residential Surge Products Stage 2 Surge Strip SeriesResidential Surge Products Surge Strip Series Max SeriesPortable Generators 3250, 5500, 7000 Watt Portable GeneratorsSurge Protection Part Dimensions Weight List Voltage NumberNema 1/3R Enclosure Price Number16.0 x 11.0 x $2,415 16.0 x 11.0 x $2,19516.0 x 11.0 x $2,635 18.0 x 13.0 x $2,97018.0 x 13.0 x $6,260 18.0 x 13.0 x $5,71018.0 x 13.0 x $6,805 18.0 x 13.0 x $5,485Nema 1 Enclosure Data Line and Telecommunication Weight lb List Price Pccp SeriesDescription Part Number Psip SeriesPpch Series Weight lb List Price Pmtj SeriesMisc Powerware Product Services Overview ServicesENotify Remote Monitoring Powerware Gold Plan Plus and PowerTrust Gold Plan Plus Powerware Gold Plan and PowerTrust Gold PlanExpedited exchange service Powerware Gold Plan includesPowerware On-Site Gold Plan Plus includes Powerware On-Site Gold Plan includesBattery Replacement Services SummaryService Plan Features Time and Material Service Rate Schedule Single-phase Service PlansExtended Battery Module Adder Service Plans Powerware 5125 RACK/TOWER Service PlansExternal Battery Module Adder Service Plans External Battery Module 7 x 24 Service AddersPowerware 9120 Service Plans On-site service is 7 x Gold Plan On-Site Gold Plan On-Site Gold Plan Plus Product Powerware 9140 7.5-10 kVA Service Upgrades Powerware 9140 UPS Service PlansContract Gold Plan Gold Plan Plus Gold Plan Gold Plan PlusOn-Site PowerTrust Product Powerware 9155 UPS Service PlansGold Plan Part Number List Price Gold Plan Plus Part Number Gold Plan Plus On-Site Gold Plan Ferrups External Battery Cabinets On-Site Plans are 7 x Support Agreements Warranty and Service Protection PlanPowerware Bladeups Service Pricing USA Three-phasePowerware BladeUPS Spare Parts Powerware PDU and RPP 30 300 kVA Service Pricing USA Powerware 9355 UPS Service Pricing USA UPS Preventive Maintenance Powerware 9355 UPS Service Pricing USAFull Battery Coverage FBC Battery ConfigurationAll Batteries Are Not Created Equal Powerware THREE-PHASE UPS BatteriesInput Plug and Output Receptacle Chart Receptacle ChartCancellations and Erroneous Orders Sales Return Merchandise Authorization RMA PolicyErroneous Shipments RMA ExpirationFerrups WarrantyTwo-Year Limited Warranty Warranty Warranty Warranty Powerware UPS Model bladeUPS One-Year Limited Warranty GlobalWarranty Powerware Connectivity Devices Two-Year Limited Warranty USA and CanadaWarranty Powerware Rack-Mounted Power distribution units Warranty Warranty Powerware 9355 UPS Model Limited Factory Warranty For Powerware 9355 UPS ProductsWarranty United States

1500 VA - 60kVa specifications

The Powerware 1500 VA - 60 kVA is a robust uninterruptible power supply (UPS) solution designed to provide reliable power protection for critical applications across various environments. With a power range that spans from 1.5 kVA to 60 kVA, this UPS is capable of catering to the diverse needs of modern businesses and organizations, ensuring uninterrupted operations even in the face of power disturbances.

One of the main features of the Powerware 1500 VA - 60 kVA is its advanced double-conversion technology. This technology allows for continuous power conditioning, ensuring that the output power is always clean and stable. By converting incoming AC power to DC and then back to AC, the UPS eliminates voltage fluctuations and protects sensitive electronic equipment from surges, sags, and other electrical anomalies.

The system is equipped with various connectivity options, including USB and serial communication ports, which facilitate easy monitoring and management of power settings. With user-friendly interfaces, operators can quickly access vital information about the UPS’s performance, battery status, and load levels. Additionally, options for network management cards allow for remote monitoring, which is essential for data centers or facilities that require constant oversight of their power systems.

Another notable characteristic of the Powerware 1500 VA - 60 kVA is its scalability. Users can seamlessly expand the UPS capacity by adding additional power modules, making it a future-proof investment that can grow alongside the organization. This feature is particularly valuable for businesses anticipating growth or increased power demands in the future.

The Energy Saver System (ESS) technology integrated into the Powerware series helps to optimize energy efficiency, reducing operating costs while maintaining high performance. By using smart algorithms to minimize losses, the UPS can operate in eco-friendly modes without compromising reliability.

Furthermore, the Powerware UPS units are designed with high availability in mind, featuring hot-swappable batteries and modular designs that allow for easy maintenance without interrupting the power supply. This high-reliability design ensures that operations remain consistent and that downtime is minimized.

Overall, the Powerware 1500 VA - 60 kVA UPS is an exceptional choice for businesses seeking a dependable power protection solution. With its advanced technologies, scalability, and energy efficiency features, it meets the demands of critical applications while delivering consistent performance and reliability.