Dell J730N, K805N, J739N, K804N, 3750W Installing the UPS, Installing Remote Emergency Power-off

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Installing the UPS

To install the UPS:

1If you plan to use Dell UPS Management Software, connect your computer to the USB port using the supplied cable. For more information about communication options, see page 54.

2If your rack has conductors for grounding or bonding of ungrounded metal parts, connect the ground cable (not supplied) to the ground bonding screw. See “Identifying the UPS Rear Panels” on page 15 for the location of the ground bonding screw for each model.

3If an emergency power-off (disconnect) switch is required by local codes, see the following section, “Installing Remote Emergency Power-off” (REPO) to install the REPO switch before powering on the UPS.

4Plug the equipment to be protected into the UPS output receptacles, but do not turn on the protected equipment.

5Make any necessary provisions for cord retention and strain relief.

NOTE: Verify that the total equipment ratings do not exceed the UPS capacity to prevent an overload alarm.

Installing Remote Emergency Power-off

REPO is used to shut down the UPS from a distance. For example, this feature can be used for shutting down the load and the UPS by thermal relay, in the event of room overtemperature. When REPO is activated, the UPS shuts down the output and all its power converters immediately. The UPS logic power remains on to issue an alarm.

The REPO feature shuts down the protected equipment immediately and does not follow the orderly shutdown procedure initiated by any power management software. Any devices that are operating on battery power are also shut down immediately.

When the REPO switch is reset, the equipment will not return to utility or battery power until the UPS is manually restarted.

The REPO contacts are normally open.

WARNING: The REPO circuit is an IEC 60950 safety extra low voltage (SELV) circuit. This circuit must be separated from any hazardous voltage circuits by reinforced insulation.

CAUTION: The REPO must not be connected to any utility connected circuits. Reinforced insulation to the utility is required. The REPO switch must have a minimum rating of 24 Vdc and 20 mA and be a dedicated latching-type switch not tied into any other circuit. The REPO signal must remain active for at least 250 ms for proper operation.

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Contents Users Guide September 2009 164201789 Table of Contents Dell UPS Management Software RS-232 and USB Communication PortsUPS Status Menu Event Log Menu Testing BatteriesDell Online Rack UPS IntroductionIntroduction What are You Looking For? Find It Here Finding InformationUPS Output Power Safety WarningsSafety Warnings Safety Warnings Inspecting the Equipment InstallationUnpacking the Cabinet Unpacking the CabinetLifting the Cabinet 208V Rear Panel Identifying the UPS Rear Panels230V Rear Panel Dell Online Rack UPS Front Panel Identifying the UPS Front PanelRemoving the Battery Retaining Bracket Rackmount SetupRemoving the Battery Trays Installing the Rails Installing the Cabinet Install the UPS battery trays see Figure Installation Installing the UPS Front Cover Installing the EBMInstalling Remote Emergency Power-off Installing the UPSRepo Connector Repo Connections Wire FunctionHardwiring the UPS Input Circuit Breaker Diagram UPS Initial Startup UPS Input Terminal Block UPS Wiring SpecificationsInstallation UPS Startup and Shutdown OperationStarting the UPS UPS Shutdown Starting the UPS on BatteryControl Button Functions Control Button Sequence Control Panel FunctionsDisplay Functions Changing the LanguageStartup Screen UPS Status Screen LockedBypass Mode Battery ModeBad Battery Detected or Battery Disconnected UPS General Alarms ActiveNormal Mode Status Summary Screens Description Battery Test StatusHigh Efficiency Mode Converter ModeEvent Log Battery Status Screens DescriptionMeasurements Control Screens Description Control ScreensIdentification Settings Description Available Settings Default Setting SettingsSettings Description Available Settings Default Setting Settings Description Available Settings Default Setting Settings Description Available Settings Default Setting Transferring the UPS Between Modes Transferring from Normal to Bypass ModeTransferring from Bypass to Normal Mode Setting Power StrategyBehavior on Overload Retrieving the Event LogControlling Load Segments Through the Display Configuring Load SegmentsConfiguring Automatic Start Delay Configuring Automatic on Battery Shutdown Configuring the UPS for an EBM Configuring Battery SettingsRunning Automatic Battery Tests Configuring Automatic RestartConfiguring Automatic Battery Tests RS-232 and USB Communication Ports Additional UPS FeaturesGND RS-232 Communication Port Pin AssignmentDell Network Management Card Dell Network Management Card OptionalDell UPS Management Software UPS and Battery Care UPS MaintenanceTransporting the UPS Remove the UPS front cover see Figure Storing the UPS and Batteries When to Replace BatteriesUpdating the UPS Firmware Testing BatteriesSpecifications Power Levels Efficiency Normal modeRegulation Normal mode Regulation Battery modeOperating Temperature Environmental and SafetyTemperature Relative Humidity Safety ConformanceBattery Type Battery ConfigurationBattery Runtimes VoltageAccessing Alarms and Conditions TroubleshootingUPS Status Menu Event Log Menu Typical Alarms and ConditionsAction 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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