| 摘要 |
A telecommunications unit is equipped with a housing (11, 15) which forms a housing cover with two or more housing chambers (19, 20) which are covered by different cover parts (16, 17). A cover part (17) for connectors (13) is easily removed using a simple tool such as a screwdriver while the other cover part (16) for the electric circuit arrangement (12) can only be unlocked in the workshop or by means of a special key-like tool. Thus, the chamber (19) for the circuit arrangement is, when its cover part (16) is closed, secured in accordance with the relevant safety regulations, while the connectors (13) for connection can be made accessible using a tool although their cover is secure against being opened by hand. Similar securing can also be provided on a possible third chamber, for example intended to accommodate mains connection means. <IMAGE>
|
