| 摘要 |
The device contains a cylindrical body which, by means of a tee, houses a unit with electric heaters the leads of which are taken through the lateral hole of the tee-piece and are connected to a contactor which has a position switch. A tee with an emergency valve and a tee with a reversible valve are mounted in series to the tee. A pin getting through an aperture in the centre of the stopper covering the lateral hole of the tee with the reversible valve is mounted to the reversible valve, The driving stud of a breaker is fitted on the same axis with the pin and is in contact with it. The breaker and the contactor with the position switch are connected in series to the circuit of the phase of the mains supply./!
|
