Regular tests on RCCBs must take place every six months in order to make sure that the contacts are working properly and the device is able to trip in case of a leakage to earth.
F-ATI and F-ARI residual current devices with automatic test
push the periodic test to another level as this is run automatically and with no interruption at all of the service. Therefore, also the operations carried out by maintenance personnel are reduced to the very minimum and a full array of the devices can be remotely controlled and read using the ARBus interface
In addition to the automatic test, the reclosing operations on F-ARI are based on an insulation check to make sure that no permanent fault is present.