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2.10 Inrush Current Limiter (Option)
The Power Distribution Unit provides an inrush current limiter as an option.
The inrush current limiter is designed for capacitive loads. In the moment of switching-on the
system the inrush current of the connected load will be limited for the defined time T
Independent from the previous inrush level, the current limiting is always strict. After T
elapses the current limiting circuit of the inrush current limiter will be bypassed. Then the load
is directly connected to the AC. If an AC dump overshoots the defined time T
detected by the inrush current limiter. As soon as the AC recovers the inrush will be limited,
again. The inrush current limiter provides an internal temperature control. In case of a failure
the device shuts down to prevent overheating or fire.
For reliable operation of the optional inrush current limiter, a type B or C
circuit breaker in the electrical feed to the Rack Safety Plus Unit is required.
Faster circuit breakers are not recommended.
Date: 2023/06/16
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