Method and system allowing more accurate detection and identification of unwanted arcing include novel processing of signal voltage representing recovered power-line current. In one implementation, arc-faults are detected based on numerical analysis where individual cycles of line voltage and current are observed and data collected during each cycle is processed to estimate likelihood of presence of arc-event within each individual cycle based on pre-defined number of arc-events occurring within pre-defined number of contiguous cycles. In another implementation, fast transient current spikes detection can be done by: computing difference values between consecutive line-current samples collected over a cycle, average of differences, and peak-to-peak value of line-current; comparing each difference value to average of difference; comparing each difference value to peak-to-peak value; and, based on calculation of composite of two comparisons, using thresholds to determine if arcing is present within processed cycle.

Various embodiments are described herein for mobile units having an interior defined by fewer than four side walls, the mobile units being adapted to be interconnected with at least one like or different mobile unit, the at least one like or different mobile unit having fewer than four side walls, thereby to jointly form a large interior room with a longitudinal support structure for the roof structure of at least one of the mobile units.

SA surgical room power system including at least one source of power wired to a power source for a surgical room, the at least one source of power being wired to the surgical room; at least one power receiver; and a surgical power consumer wired to the at least one power receiver, the surgical power consumer being configured to assist a surgeon during a surgical procedure on a patient. The at least one source of power wirelessly transfers power to the at least one power receiver for powering the surgical power consumer.

A medical device assembly including a movable suspension arm assembly comprising a plurality of joints; a service head located at an end of the suspension arm assembly, the service head comprising a plurality of outlets; and a brake system for selectively braking the plurality of joints, the brake system comprising a plurality of user engagements, wherein the brake system is configured to detect user engagement of the plurality of user engagements and to release at least one brake of the brake system in response to detecting simultaneous user engagement of at least two of the plurality of user engagements so that a user can move the service head.

The invention relates to a wall bracket (1) for releasably securing a medical appliance and an appliance-specific connection element. The wall bracket comprises a housing (2) which has a front side (3), a rear side (16), two longitudinal sides (11a, 11b), a lower side (5) and an upper side (6). A connection geometry (4) for an appliance-specific connection element is arranged at the front side (3). A locking element (24) can be moved through an opening (23) of the connection geometry (4), wherein the locking element (24) can be moved by means of a lever (12) which is supported in the housing (2) between an open position and a locking position.