| 摘要 |
<p>Power source devices of the type in question are equipped nowadays with a transformer unit (6) which can be connected to a train busbar (1) and which supplies a single-phase alternating voltage and downstream of which useful kitchen loads (18, 20) are connected via a thyristor adjustment element or chopper and a rotary current invertor (14), and a vehicle battery is connected via a charging device (10); when the busbar voltage fails, said battery feeds, as an emergency power source, at least some of the useful kitchen loads. In order to simplify the construction and to improve the cost-effectiveness of power source devices of this kind, it is proposed to make it possible to wire the vehicle battery (11) in such a way that is connected to the input of the rotary current invertor (14).</p> |
