Abstract: The invention relates to a device for covering and sealing a hole (10) through a wall provided for leading cables therethrough, said hole being provided in, for example, a switchgear cabinet. The device comprises a retaining frame (16), which can be fastened to the edge (66) of the hole through the wall (12), and comprises a number of bushes (30, 31), which are made of elastomeric material, can be removeably inserted inside frame openings (28), and which can be fixed therein. A least one part of the bushes (30, 31) is provided with at least one through opening for a cable. In order to equip the cable leadthrough with cables in a particularly easy manner and to be able to mount it on the switchgear cabinet, the invention provides that the frame openings (28) are open on one side for inserting the bushes (30, 31). In addition, one of the bushes (31), which can be inserted into the frame openings, can be arrested in a direction of insertion in the area of the sidewalls (36) that delimit the frame openings (34).

Abstract: The invention relates to a device for covering and sealing a hole (10) through a wall provided for leading cables therethrough, said hole being provided in, for example, a switchgear cabinet. The device comprises a retaining frame (16), which can be fastened to the edge (66) of the hole through the wall (12), and comprises a number of bushes (30, 31), which are made of elastomeric material, can be removeably inserted inside frame openings (28), and which can be fixed therein. A least one part of the bushes (30, 31) is provided with at least one through opening for a cable. In order to equip the cable leadthrough with cables in a particularly easy manner and to be able to mount it on the switchgear cabinet, the invention provides that the frame openings (28) are open on one side for inserting the bushes (30, 31). In addition, one of the bushes (31), which can be inserted into the frame openings, can be arrested in a direction of insertion in the area of the sidewalls (36) that delimit the frame openings (34).

Abstract: To test the flux of circular segmental permanent magnets for assembly in permanent magnet dynamo electric machines, typically electric motors, a gauge is made of soft iron having an inner segmentally circular soft iron core, on it a layer of non-magnetic material to simulate the air gap of the motor, space for the permanent magnet to be inserted, and a return soft iron yoke in magnetic circuit with the core. A measuring coil which is chorded is located on the gauge to sense the magnetic flux, and so placed on the core that it conforms, at least approximately, to the pitch angle of the armature winding of the dynamo electric machine with which the magnet is to be used.