4For 3750W/208V models only. Verify that the power input to the UPS has a minimum of 30A upstream overcurrent protection.

Plug the UPS power cord into a power outlet.

The UPS front panel display illuminates. The Dell startup screen changes to the UPS status summary screen. The UPS front panel display shows the flashing Standby icon .

5For hardwired input models only. Switch the main utility breaker on.

The UPS front panel display illuminates. The Dell startup screen changes to the UPS status summary screen. The UPS front panel display shows the flashing Standby icon .

6Press the button on the UPS front panel.

After the startup is complete, the status icon changes to the appropriate icon based on the UPS operating mode (see Table 3 on page 36).

7On the UPS status summary screen, press the button to check for active alarms or notices. Resolve any active alarms before continuing. See “Troubleshooting” on page 66.

If there are no active alarms, a “No Active Alarms” message appears.

8Verify that the Normal icon appears on the UPS status summary screen, indicating that the UPS is operating normally and any loads are powered (see Table 3 on page 36).

9If an optional EBM is installed, see “Configuring the UPS for an EBM” on page 52.

10To change other factory-set defaults, see “Operation” on page 31.

11If you installed an optional REPO, test the REPO function:

Activate the external REPO switch. Verify the status change on the UPS display.

Deactivate the external REPO switch and restart the UPS.

NOTE: Dell recommends setting the date and time.

NOTE: At initial startup, the UPS sets system frequency according to input line frequency (input frequency auto-sensing is enabled by default). After initial startup, auto-sensing is disabled until manually re-enabled by output frequency setting.

NOTE: At initial startup, input voltage auto-sensing is enabled by default. After the subsequent startup, auto-sensing is disabled until manually re-enabled by output voltage setting.

NOTE: The internal batteries charge to 90% capacity in less than 4 hours. However, Dell recommends that the batteries charge for 48 hours after installation or long-term storage. If an optional EBM is installed, see the recharge time listed in Table 14 on page 65.

30 Installation

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Dell K804N, K805N, J739N, 3750W, J730N, H952N, 4200W manual Installation

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.