A power equipment protection system (102) includes a plurality of trip units (134) including at least a first trip unit (136) and a second trip unit (138), wherein each of the plurality of trip units (134) is configured to monitor operation data. The syste...

In an uninterruptible power supply system, control units (11) of three uninterruptible power supply apparatuses (U1 to U3) are connected to each another by communication cables (C1, C2) to form one total control unit (13). The total control unit (13) bring...

The apparatus e.g. extension (4), has an operating apparatus (20) comprising a power supply to supply power to the operation apparatus and an article apparatus (10). The operating apparatus comprises an interface (S) for an electrical building services sys...