Power distribution unit
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A power distribution unit is a device fitted with multiple outputs designed to distribute electric power, especially to racks of computers and networking equipment located within a data center. Data c
A 10-outlet rack-mount PDU (front), connected to a UPS (bottom unit on right)
A temporary PDU, distributing 120-volt AC power at an outdoor event
Cabinet PDU with access doors open
Uninterruptible power supply
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An uninterruptible power supply or uninterruptible power source is an electrical apparatus that provides emergency power to a load when the input power source or mains power fails. A UPS differs from
Power distribution unit
…power monitoring panels. The cabinet provides internal bus bars for neutral and grounding. Prepunched top and bottom panels allow for safe cable entry. Uninterruptible power supply AC power plugs and sockets…
A large data-center-scale UPS being installed by electricians
Internal view of a solar inverter. Note the many large capacitors (blue cylinders), used to store energy briefly and improve the output waveform.
UPS output waveform (yellow) compared to normal 120 VAC 60 Hz power waveform (violet)
Battery cabinet