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 Ah 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.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 values.

2.Record the LVD trip point.

3.To test the LVD function, set the LVD Trip to –56.00 Vdc.

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

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

6.Reset the LVD Trip to the original setting.

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

Battery Preventive Maintenance Procedure

The purpose of the preventive maintenance is to ensure that the battery is in good, working condition. The observations, measurements, and tests performed are designed to determine the “state of health” of the battery. It will also allow for the prediction of future performance and preempt possible failure.

1.Measure the float charge voltage.

a.At the power bay bus.

b.At the battery.

c.Reset voltage if necessary.

2.Measure the float current on each battery cable. If it is fluctuating, measure maximum and minimum.

3.Measure the ac ripple voltage at the battery.

4.Measure the float voltage of each cell or monoblock. Record the battery memory location allocated on the battery tester.

5.Perform a load test on each cell or monoblock and measure the internal cell resistance and inter-cell resistance of each cell or monoblock.

6.Ensure that all protective covers are replaced and that the battery is electrically non-hazardous to personnel that could be working in the vicinity

Magnum VS –48 Vdc User Manual

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American Power Conversion VS 100 Battery Current Test, Battery Temperature Test, Battery Preventive Maintenance Procedure
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VS 50, VS 100 specifications

American Power Conversion (APC), a brand under Schneider Electric, is renowned for its uninterruptible power supplies (UPS) and provides a range of solutions for both commercial and personal use. Among their various product lines, the APC Smart-UPS 1000VA (VS 1000) and Smart-UPS 500VA (VS 500) stand out due to their features, technologies, and specifications tailored to different operational needs.

The APC Smart-UPS 1000VA is designed for advanced power protection, capable of supporting servers, network equipment, and more demanding applications. It features a pure sine wave output, which is critical for sensitive electronics, ensuring devices receive a stable and clean power source even during outages. The VS 1000 is equipped with an extensive battery backup, offering up to 9 minutes of runtime at full load.

A notable technology employed in the Smart-UPS 1000 is the Automatic Voltage Regulation (AVR), which maintains output voltage stability by adjusting boost and trim in situations of under or over voltage. The unit has an LCD interface, providing real-time data regarding load capacity, runtime, and battery health, enabling users to easily monitor and manage performance. Additionally, with its compact design, the VS 1000 can fit into various settings, maximizing space efficiency.

In contrast, the APC Smart-UPS 500VA targets smaller operations, offering a more compact solution for basic power protection needs. Like its larger counterpart, it also provides pure sine wave output, ensuring the safe operation of connected equipment. The VS 500 is designed for less intensive applications, making it suitable for desktop computers, network devices, and home office setups.

The 500VA model supports shorter runtimes, typically around 3 to 6 minutes under full load but is ideal for situations where downtime needs to be minimized. The Smart-UPS 500VA features similar Automatic Voltage Regulation technology, maintaining voltage stability under fluctuating conditions. However, it comes with a more straightforward LCD display, providing essential information on power status and battery levels without overwhelming the user.

In summary, the APC Smart-UPS 1000VA and 500VA cater to different user requirements, with the VS 1000 offering robust features for larger setups and the VS 500 serving as a versatile option for home or small office use. Both models integrate essential technologies such as pure sine wave output and AVR, showcasing APC’s commitment to high-quality power solutions. Whether for commercial or personal use, these units demonstrate APC's ability to provide reliable power protection tailored to diverse needs.
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