Routine maintenance checking on safety-critical, inaccessible duct-mounted fans on critical duty, using external MMLG connectors
Tests were carried out on these large, safety critical, air handling unit fans, feeding air into railway tunnels of strategic significance.
As in all Faraday Predictive testing, measurements are made in the switchgear, at the motor starter panel. In this case, connection to the panels was made externally, using the MMLG/MMLB test blocks that are part of the motor protection system, as shown in this photo. This system means that testing can be carried out without even having to open the cabinet.
What to do next
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