| 摘要 |
The device is provided for electricity meters, the driving system of which in each case exhibits a voltage magnet having a U-shaped outer voltage core (1) and an inserted T-shaped inner voltage core (2). The inner voltage core (2) passes through a coil former (3) of a voltage coil (4). On both outer legs (1a, 1a') of the outer voltage core (1), a one-piece plug-in part (5) is mounted as calibration winding which is clamped over the coil former (3). The plug-in part (5) encircles the two outer legs (1a, 1a') with one closed winding (5a, 5a') each and is provided with conductor tracks (5b, 5c) connecting the two windings (5a, 5a'). On these tracks, a link (6) can be displaced so that the loading of the voltage driving flux forming the torque can be varied almost linearly in symmetry. After the low load has been set, the link (6) can be locked with a screw (7). <IMAGE>
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