The original fuseboard had no RCD of any kind, and no over- or under-voltage protection. That in turn affected the delicate electronics inside the 3D printers, and the tenant was dealing with constant voltage fluctuations.
To limit the damage, the tenant had installed a string of UPS units to protect the printers. When one of those UPS units failed, we were called in to review the electrical installation.
We decided to replace the fuseboard, fitting a new HRN100 and a contactor. After a few adjustments in the days following the install, the print farm had both proper protection and the shortest downtime we could manage.
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