Polarised electromagnetic relay system - has two mechanically independent armatures with their air-gaps in series in core of excitation coil

摘要

Two permanent magnets are provided for generation of permanent magnetic flux for each of the two air-gaps. There is a permanent magnet (DM1, DM2) in parallel with each air-gap (L1, L2). The like poles (S) of the magnet are connected with the coil core (ST1, ST2) and the opposite poles (N) are connected with a flux closing element (NB) outside the coil. There is a carrier plate or base (T1T2) which is connected to an outside cover (D1D2), which is made of metal. There is an annular cavity, (S1S2) containing switches; this cavity is hermetically sealed.