Abstract: An apparatus and a method for operating an electric power network are disclosed. The electric power network is a compensated network arranged to be compensated by an arc suppression coil. An indication for an occurrence of an earth fault in the electric power network is received and the arc suppression coil is tuned away from resonance with respect to a resonance point of the electric power network, while the earth fault is present in the electric power network, to increase fault current in the electric power network for tripping one or more relays in the electric power network.

Abstract: The invention relates to a plastic enclosure (1) for enclosing industrial components. The enclosure comprising a case (2) made of plastics. The case comprises a rectangular rear wall (3) and four side walls (4, 5, 6, 7) delimiting an interior (8) having four corners (9, 10, 11, 12) at the junctures of side walls. The rear wall and the side walls together form a monolithic unitary box-like container which has a mouth opening (13) at one side enabling access to the interior. Each corner comprises fastening means for fastening of one or more panels (P; P1) inside the interior in parallel and at a desired distance relative to the rear wall. The fastening means comprises a pair of rib members (14, 15) molded integrally as unitary monolithic structures with the side walls. The rib members extend along the side walls between the rear wall and the mouth opening. Each rib member comprises a plurality of equally spaced grooves (16) extending at right angle relative to the longitudinal direction of the rib member.

Abstract: An apparatus and a method for operating an arc suppression coil in an electric power network are disclosed. The arc suppression coil is operated off-resonance with respect to a normal state resonance point of the electric power network during normal operation of the electric power network. An indication for an occurrence of an earth fault in the electric power network is received and, in response to the indication, the arc suppression coil is tuned towards resonance with respect to the normal state resonance point, while the earth fault is present in the electric power network.

Abstract: An arc suppression coil for a three-phase electric power network comprises a transformer core having three limbs: a first limb, a second limb and a third limb. The transformer core defines an additional path for carrying magnetic flux between the opposite ends of the three limbs. Three separate phase windings comprise a first phase winding wound at the first limb of the transformer core, a second phase winding wound at the second limb of the transformer core and a third phase winding wound at the third limb of the transformer core.

Abstract: An apparatus and a method for operating an electric power network are disclosed. The electric power network is a compensated network arranged to be compensated by an arc suppression coil. An indication for an occurrence of an earth fault in the electric power network is received and the arc suppression coil is tuned away from resonance with respect to a resonance point of the electric power network, while the earth fault is present in the electric power network, to increase fault current in the electric power network for tripping one or more relays in the electric power network.

Abstract: The disclosure relates to a shearing screw for clamping an electrical conductor within a cable connector. The shearing screw comprises a screw body for engaging the cable connector, which further comprises an outer thread and a clamping surface for clamping the electrical conductor within the cable connector. The screw body also comprises a collar and a groove for detaching the collar from the screw body, whereas the shearing screw comprises a nut for shearing the shearing screw. The collar and the nut are adapted to be rotatable simultaneously with a sleeve for fastening the shearing screw to the cable connector.

Abstract: The invention relates to a plastic enclosure (1) for enclosing industrial components. The enclosure comprising a case (2) made of plastics. The case comprises a rectangular rear wall (3) and four side walls (4, 5, 6, 7) delimiting an interior (8) having four corners (9, 10, 11, 12) at the junctures of side walls. The rear wall and the side walls together form a monolithic unitary box-like container which has a mouth opening (13) at one side enabling access to the interior. Each corner comprises fastening means for fastening of one or more panels (P; P1) inside the interior in parallel and at a desired distance relative to the rear wall. The fastening means comprises a pair of rib members (14, 15) molded integrally as unitary monolithic structures with the side walls. The rib members extend along the side walls between the rear wall and the mouth opening. Each rib member comprises a plurality of equally spaced grooves (16) extending at right angle relative to the longitudinal direction of the rib member.

Abstract: The invention relates to a plastic enclosure for enclosing industrial components. The enclosure comprises a case (2), a lid (9), and a latch device (13) for locking the lid to the case. The lid (9) has a grip means formed as a rigid lug (14) molded to be monolithic with the lid (9), the lug comprising a throughhole (19) to which a hook portion (17) of a rocker (15) can grip. The lug (14) is arranged, in the closed position of the lid, to extend over and at a distance from the second wall (7) to be substantially in parallel with a wall of the case to limit an intermediate space between the wall (7) and the lug (14) when the lid is in the closed position.

Abstract: The disclosure relates to a shearing screw for clamping an electrical conductor within a cable connector. The shearing screw comprises a screw body for engaging the cable connector, which further comprises a collar, an outer thread, a cylindrical bore and a clamping surface for clamping the electrical conductor within the cable connector. The shearing screw comprises a nut for shearing the shearing screw. The collar and the nut are adapted to be rotatable simultaneously with a sleeve for fastening the shearing screw to the cable connector.

Abstract: The disclosure relates to a shearing screw for clamping an electrical conductor within a cable connector. The shearing screw comprises a screw body for engaging the cable connector, which further comprises an outer thread and a clamping surface for clamping the electrical conductor within the cable connector. The screw body also comprises a collar and a groove for detaching the collar from the screw body, whereas the shearing screw comprises a nut for shearing the shearing screw. The collar and the nut are adapted to be rotatable simultaneously with a sleeve for fastening the shearing screw to the cable connector.

Abstract: The disclosure relates to a shearing screw for clamping an electrical conductor within a cable connector. The shearing screw comprises a screw body for engaging the cable connector, which further comprises a collar, an outer thread, a cylindrical bore and a clamping surface for clamping the electrical conductor within the cable connector. The shearing screw comprises a nut for shearing the shearing screw. The collar and the nut are adapted to be rotatable simultaneously with a sleeve for fastening the shearing screw to the cable connector.