Rack Mounted Load Bank for data center, UPS

The most effective approach to power and thermal load testing during commissioning that we have found is to utilize rack-mounted load banks (Figure 2). These are resistive heating element load bank units that mount in typical 19” server racks, plug into dual-circuit rack PDUs (power distribution units), and can be dialed-in to the expected load of the particular rack.  In this manner, the full load rack configuration can be simulated, as well as some partial theoretical/planned initial buildout. The fact that the loads can be configured to match expected loads, and at specific locations, can have a number of benefits to more representative testing. For example, hot aisle hot spots can be better detected, resulting from either airflow variations within the hot aisle or, perhaps, based on variations in performance by in-row cooling hardware. Further, N+1 testing of cooling equipment can be accurately simulated. If, for example, a data center is designed to to have 10 in-row cooling (IRC) units, but only requires 9 operational to meet heat rejection loads (i.e. 9 + 1 = 10), during design load testing, a single IRC can be failed and the hot aisle can be evaluated to determine if unacceptable hot aisle temps result near the failed IRC unit. Performing this kind of testing with floor load banks would be inconclusive at best.

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Using Application: Data Center, Generator, UPS power supply, Inverter, project debugging, Laboratory, etc.