Dell K804N, K805N, J739N, 3750W, J730N, H952N Settings Description Available Settings Default Setting

Page 44

Table 6. Settings (continued)

Description

Available Settings

Default Setting

 

 

 

Bypass Voltage Low Limit

[-6%] [-7%]...[-20%] of nominal

-15% of nominal

 

The Bypass operation is disabled if the measured

 

 

bypass voltage level is below the nominal output

 

 

voltage (-15%).

 

 

NOTE: The Qualify Bypass setting may overrule the

 

 

Bypass Voltage Low Limit setting.

 

 

 

 

Bypass Voltage High Limit

[+6%] [+7%] [+20%] of nominal...

+10% of nominal

 

The Bypass operation is disabled if the measured

 

 

bypass voltage level is above the nominal output

 

 

voltage (+10%).

 

 

NOTE: The Qualify Bypass setting may overrule the

 

 

Bypass Voltage High Limit setting.

 

 

 

 

Qualify Bypass

[Always] [Never] [Bypass Disabled]

Always

 

If Always, Bypass operation is allowed when:

 

 

S

Bypass voltages > the value set for Bypass

 

 

 

Voltage Low Limit

 

 

S

Bypass voltages < the value set for Bypass

 

 

 

Voltage High Limit

 

 

S

Bypass frequency > (nominal frequency -3 Hz)

 

 

S

Bypass frequency < (nominal frequency +3 Hz)

 

 

S

Inverter is synchronized with Bypass when

 

 

 

unsynchronized transfers are disabled by the

 

 

 

value set for Unsynchronized Transfers

 

 

If Never, Bypass operation is always allowed; voltage

 

 

and frequency limits are not in use.

 

 

If Bypass Disabled, Bypass operation is prohibited.

 

 

 

 

Synchronization Window

[Sync Disabled] [±0.5 Hz] [±1.0 Hz] [±1.5 Hz]

±3.0 Hz

 

[±2.0 Hz] [±2.5 Hz] [±3.0 Hz]

 

If ±3.0 Hz, on inverter operation the inverter tries to synchronize with the Bypass when the Bypass frequency is not more than 3 Hz from the nominal output frequency; otherwise, the inverter goes to nominal frequency. On Bypass mode, the sync window is always ±3 Hz.

NOTE: In Sync Disabled state, if the Bypass operation is allowed, the UPS synchronizes only when it is operating on Bypass mode.

44 Operation

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Contents Users Guide September 2009 164201789 Table of Contents RS-232 and USB Communication Ports Dell UPS Management SoftwareTesting Batteries UPS Status Menu Event Log MenuIntroduction Dell Online Rack UPSIntroduction Finding Information What are You Looking For? Find It HereSafety Warnings UPS Output PowerSafety Warnings Safety Warnings Installation Inspecting the EquipmentUnpacking the Cabinet Unpacking the CabinetLifting the Cabinet Identifying the UPS Rear Panels 208V Rear Panel230V Rear Panel Identifying the UPS Front Panel Dell Online Rack UPS Front PanelRackmount Setup Removing the Battery Retaining BracketRemoving the Battery Trays Installing the Rails Installing the Cabinet Install the UPS battery trays see Figure Installation Installing the EBM Installing the UPS Front CoverInstalling the UPS Installing Remote Emergency Power-offRepo Connections Wire Function Repo ConnectorHardwiring the UPS Input Circuit Breaker Diagram UPS Input Terminal Block UPS Wiring Specifications UPS Initial StartupInstallation Starting the UPS OperationUPS Startup and Shutdown Starting the UPS on Battery UPS ShutdownControl Panel Functions Control Button Functions Control Button SequenceStartup Screen Changing the LanguageDisplay Functions Screen Locked UPS StatusBattery Mode Bypass ModeBad Battery Detected or Battery Disconnected UPS General Alarms ActiveStatus Summary Screens Description Battery Test Status Normal ModeHigh Efficiency Mode Converter ModeBattery Status Screens Description Event LogMeasurements Control Screens Control Screens DescriptionIdentification Settings Settings Description Available Settings Default SettingSettings Description Available Settings Default Setting Settings Description Available Settings Default Setting Settings Description Available Settings Default Setting Transferring from Normal to Bypass Mode Transferring the UPS Between ModesSetting Power Strategy Transferring from Bypass to Normal ModeRetrieving the Event Log Behavior on OverloadConfiguring Load Segments Controlling Load Segments Through the DisplayConfiguring Automatic Start Delay Configuring Automatic on Battery Shutdown Configuring Battery Settings Configuring the UPS for an EBMConfiguring Automatic Battery Tests Configuring Automatic RestartRunning Automatic Battery Tests Additional UPS Features RS-232 and USB Communication PortsRS-232 Communication Port Pin Assignment GNDDell Network Management Card Optional Dell Network Management CardDell UPS Management Software Transporting the UPS UPS MaintenanceUPS and Battery Care Remove the UPS front cover see Figure When to Replace Batteries Storing the UPS and BatteriesTesting Batteries Updating the UPS FirmwareSpecifications Efficiency Normal mode Power LevelsRegulation Normal mode Regulation Battery modeEnvironmental and Safety Operating TemperatureTemperature Relative Humidity Safety ConformanceBattery Configuration Battery TypeBattery Runtimes VoltageUPS Status Menu TroubleshootingAccessing Alarms and Conditions Typical Alarms and Conditions Event Log MenuAction Troubleshooting Troubleshooting Silencing the Alarm
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H952N, K804N, J739N, K805N, J730N specifications

The Dell J730N, K805N, J739N, 4200W, and 3750W are all high-performance server power supplies designed to provide reliable power solutions for various Dell server models. These power supplies are engineered to ensure maximum uptime, energy efficiency, and seamless operation in data center environments.

Starting with the Dell J730N, this power supply unit is known for its robust design and 730W output capacity. It features hot-swappable functionality, allowing for easy replacement without powering down the server. This is crucial for mission-critical applications where downtime can lead to significant operational challenges. The J730N is compatible with various Dell servers, making it a versatile choice for data centers looking to enhance their power management.

The K805N power supply is another excellent option with a power output of 800W. It incorporates advanced features such as Automatic Voltage Regulation (AVR), which ensures that the output voltage remains stable even during fluctuations in the input voltage. This technology is vital for protecting sensitive server components from potential damage caused by power inconsistencies. Additionally, the K805N is designed with a modular approach, allowing for easy integration and scalability.

The Dell J739N exemplifies Dell’s commitment to energy efficiency with its 750W rating. It meets stringent efficiency standards, making it an environmentally friendly option that helps reduce power consumption and operational costs. The J739N is often used in combination with other Dell equipment to create a cohesive and efficient power management strategy. Its reliability is bolstered by a combination of intelligent internal monitoring systems that detect and address power anomalies.

The 4200W and 3750W power supplies represent higher capacity options for larger, more demanding server environments. These units are equipped with multiple redundant power circuits, ensuring that if one circuit fails, others will continue to supply power without interruption. The advanced cooling technologies utilized in these models also enhance performance and reliability by preventing overheating.

Overall, these Dell power supplies reflect the highest standards in design and technology. They are integral to maintaining the health and efficiency of server operations, contributing significantly to the resilience and effectiveness of data-centered environments. With a focus on compatibility, energy efficiency, and reliability, the J730N, K805N, J739N, 4200W, and 3750W power supplies remain essential components in modern IT infrastructures.
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