Abstract:
A DC/AC converter apparatus comprising: input terminals (10) to be connected to a DC power source; a DC/AC conversion unit (11) adapted to receive input DC electrical power via the input terminals and to convert the input DC electrical power into AC electrical power, the DC/AC conversion unit comprising two output terminals (12); two AC backup output terminals (14); a switch arrangement (13) adapted to selectively connect the two AC output terminals to the grid terminals and to the two AC backup output terminals; a control unit (16) associated to the switch arrangement and adapted to: drive the switches of the switch arrangement, sense when an AC voltage at the grid terminals is below a predetermined threshold; and automatically drive the switches of the switch arrangement in such a way to disconnect the two AC output terminals from the grid terminals and to connect the two AC output terminals to the two AC backup output terminals when the AC grid voltage is below a said predetermined threshold.
Abstract:
A DC/AC converter apparatus comprising: input terminals to be connected to a DC power source; a DC/AC conversion unit configured to receive input DC electrical power via the input terminals and to convert the input DC electrical power into AC electrical power, the DC/AC conversion unit comprising two output terminals; two AC backup output terminals; a switch arrangement to selectively connect the two AC output terminals to the grid terminals and to the two AC backup output terminals; a control unit associated to the switch arrangement and configured to: drive the switches of the switch arrangement, sense when an AC voltage at the grid terminals is below a predetermined threshold; and automatically drive the switches of the switch arrangement to disconnect the two AC output terminals from the grid terminals and to connect the two AC output terminals to the two AC backup output terminals when the AC grid voltage is below a said predetermined threshold.
Abstract:
A housing for electronic power components, comprising a compartment (13) and a front cover (14) for closing the compartment (13). An insulating air space (18) is defined on the cover (14).