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DSO-PRA
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4. Components of the DSO cabinet.
Equipment of each DSO cabinet includes elements necessary for proper operation of system.
These components, depending on their intended use, protect electrical system against overvoltage or short circuit,
supply power to receivers, and ensure proper signaling or cooling of installed equipment in RACK cabinet.
If device comes in several models, they are selected automatically by CONFI-DSO PRAESENSA program
supporting DSO configuration.
4.1. The LZxx-PRA safety strip.
Safety strip is fitted with circuit breakers, surge arresters, and a dummy connector. In right part, there is a
connector for connecting 230V / 400V mains supply from power grid.
Main overcurrent circuit breaker disconnects 230 V / 400 V mains from all system devices.
In addition to the main switch, it is fitted with „type 3" surge arresters compliant with the EN 61643-11 standard.
Dummy connector includes overcurrent circuit breaker which can be switched on regardless of status of
main switch.
Fig.3. The LZ1F-PRA safety strip.
Fig.4. The LZ3F-PRA safety strip.
