5.After the fan has completely stopped spinning, insert a plastic pen or plastic screwdriver into the fan blade of one of the rectifiers and reinsert both rectifiers

6.Verify that you get the fan fail alarm on controller and the customer remote alarm panel.

7.Remove the fan fail device.

System Temperature Test

Verify that the system temperature is correct.

Battery Current Test

1.Measure the battery current with a clamp-on meter.

2.Verify that the battery current is below 5 A.

3.Verify that the displayed battery current is within + 5 A.

4.Determine the total battery capacity at the site:

Cells connected in series make up a string, and the capacity is determined by the capacity of a single cell. Add ampere/hour capacity for all strings connected in parallel.

5.Determine the Max. Batt. Recharge rate:

Divide Total battery capacity by 20 hours and enter it in the appropriate box on the Site Form.

6.Verify that the Max. Batt. Recharge rate is set to the calculated value.

7.Remove ac power to the rectifiers purposely causing the battery discharge alarm to come on.

8.Verify that the System Current is 0 + 5 A.

9.Verify that the battery current is within 5 % of the system current recorded previously.

10.Verify that the Battery Discharge Alarm is on.

11.Restore ac power to the rectifiers.

Battery Temperature Test

If the battery temperature probe is used in this system, verify that the battery temperature is correct.

LVD Test

1.Ensure that the LVD parameters are set to proper value.

2.Set the LVD Trip to –56.00 Vdc.

3.The LVD should have dropped out (opened). Verify it by monitoring the voltage at the battery connection.

4.Verify that the LVD Open Alarm is registered on the controller and at the customer remote alarm panel.

5.Reset the LVD Trip to negative (-) 42.00 Vdc.

6.Verify that the LVD Open Alarm has been removed.

Magnum XS 450 Power System –48 VDC User’s Manual

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American Power Conversion XS 450 -48 user manual System Temperature Test, Battery Current Test, Battery Temperature Test

XS 450 -48 specifications

The American Power Conversion (APC) XS 450 -48 is a reliable and efficient power supply solution designed for critical applications requiring a consistent and stable power source. This solution is particularly beneficial for telecommunications, data centers, and industrial settings where power reliability is paramount.

One of the key features of the XS 450 -48 is its ability to deliver 450 watts of continuous power, ensuring that connected devices receive uninterrupted power supply. Its 48-volt output makes it ideal for telecom requirements, where 48V systems are standard. The unit provides a compact and space-saving design, making it suitable for installation in rack-mounted configurations, optimizing the utilization of valuable real estate in server rooms or equipment racks.

The XS 450 -48 utilizes advanced technologies that enhance its performance and reliability. It is equipped with an active power factor correction (PFC) system that significantly reduces harmonic distortion. This feature not only improves system efficiency but also complies with various regulations concerning power quality. Additionally, the power supply includes built-in over-voltage protection, over-current protection, and short-circuit protection, ensuring that both the power supply and the connected devices are safeguarded against electrical faults.

The unit is designed for high efficiency, often exceeding 90% under full load conditions. This not only reduces energy costs but also minimizes heat generation, contributing to a quieter operation environment. The XS 450 -48's intelligent thermal management system allows it to operate in a range of temperatures, making it highly versatile and adaptable to varying environmental conditions.

Furthermore, monitoring and management capabilities are integrated into the XS 450 -48 with optional external monitoring systems. These systems provide critical insights, allowing technicians to track real-time performance metrics, detect potential issues early on, and perform preventive maintenance.

In conclusion, the American Power Conversion XS 450 -48 stands out as a robust power supply solution that combines reliable performance, advanced protection features, and high efficiency. Its design caters to the specific needs of telecommunications and data centers, making it an indispensable asset for maintaining the uptime and integrity of critical systems. With its range of features and reliability, the XS 450 -48 continues to be a preferred choice among professionals in the field.