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alternating current aluminium apply armature binary cables calculated capacitance capacitor cell centimetre characteristic circuit breakers coefficient components connection constant converter cooling copper cross section cubic cubic centimetre curve desired value determined devices diameter earth electrical electrode energy enthalpy equation equipment factor flow flux density frequency fuel function Hall plate Hall voltage heat impedance induction input installations insulation kcal/kg kgf/cm load loop luminous flux machine magnetic field material maximum means measuring meter metre moment of inertia motor neutron no-load operating output overhead line permissible pipe pound-force pressure quantity radiation rated current rated voltage ratio reactance reactive power reactor rectifier resins resistance rotor sheath short-circuit current Siemens AG signal speed square steam steel switching Table temperature rise thermal three-phase torque transformer turbine unit vector ventilator voltage welding winding