If your desktop or server's power requirements exceed the limitations of our test bench, we recommend contacting our support team to discuss alternative testing strategies. In some cases, it may be possible to adjust the test setup or use multiple phases strategically to accommodate higher power requirements. Our team is here to help you find the best solution for your testing needs.

Understanding these limitations is vital for effectively planning and conducting your server tests. The LISN rating, in particular, restricts the maximum power that can be tested per phase, which may require adjustments to your testing setup or the distribution of power across different phases to stay within the safe operating limits of the test bench and load banks.

Our Server Test Bench is designed to accommodate a wide range of testing scenarios with an input source capacity of up to 45kVA/45kW. However, it's important to note that there are specific limitations related to the Line Impedance Stabilization Network (LISN) and the total power that can be distributed across the phases during testing.

Input Source Limitation: 
The Server Test Bench can handle an input source of up to 45kVA/45kW, providing robust testing capabilities for a variety of server units.

No, not all power supplies adhere to the same loading criteria. The capability of our load bank setup to test these supplies varies depending on several factors, including the output voltage and current ratings of the unit being tested. It's important to understand that different output voltages can affect both the power and current capabilities of our testing process

To help you understand how the output voltage impacts our testing capabilities, we've provided a table below. This table outlines the power capabilities of our load bank setup at various output voltage levels.

Our desktop test bench is equipped to test units with a power capacity upwards to a maximum of about 3kW. This robust capability allows us to support a broad spectrum of desktop units, offering comprehensive testing for a variety of models and specifications to meet diverse testing needs.

Input Line Impedance Stabilization Network (LISN) Rating Limitation:
The LISN is single-phase and is rated for 20A.

We request the manufacturer to extract the fan power leads for 230V, 277V/480V, & 380VDC Internal Redundant Data Center power supplies. The external power source should be appropriately labeled with polarity and voltage specifications. Please refer to the attached photo for proper labeling of external fan/cooling power.

In the testing process, most, if not all, power supply connectors are utilized and connected to the load test fixture. Various power supply configurations may have a multitude of connectors. For instance, the 80 PLUS^® desktop test board provides several connectors for connecting loads, including:

Table 2: Available Connectors for Desktop Power Supplies

Open frame units can be tested. The unit must be connectorized, and if it requires specific cooling air, instructions to provide that air must be included with the unit. If an air plenum is required, it must be provided with the unit on submittal.

We test two desktop power supply samples in parallel. Sample 1 is actively loaded at 0%, 2%/10W, 5%, 10%, 20%, 50%, and 100% load levels. Sample 2 is tested in standby mode according to ALPM and ERP Lot 3 & 6 requirements. This setup allows us to capture performance in both active and low-power states within a single test sequence.

When a unit comes within 0.5% of the next higher badge level on any loading parameter, the test of that unit is completed, and a second unit is tested at the failed point. Should the second unit pass the next level, the second unit is thoroughly tested, and that data is used for the 80 PLUS^® report. If the second unit fails to meet the higher level, then the first unit's data is used to create the 80 PLUS^® report.