| 摘要 |
PURPOSE:To facilitate mounting of parts and reduction of heating in a panelboard by providing many long holes on an inner panel for both mounting of parts ventilation and, and mounting this inner panel in parallel to and off the inside wall of an enclosure. CONSTITUTION:A supplementary relay 13 and a duct 6 for wiring, etc., can be secured at any positions by sliding many bosses 10 to suitable positions in suitable long holes. Also, parts requiring securing screws in the vertical direction can be mounted by selecting vertical pitches of the long holes 8. Many long holes 8 provided on an inner panel 2, can serve to reinforce the inner panel 2, and, also, through such holes, heated air in the panelboard effectively contacts with the wall of an enclosure 1 and is cooled down by the temperature difference to air outside the panelboard. |
