AC motor A-630-0.66-1500U3

AC motors with squirrel cage rotor series A4 designed for driving mechanisms that do not require speed regulation (pumps, fans, exhausters, etc.). Motors can be manufactured: • with two free shaft ends of equal size; • location of terminal box stator on the left side; • voltage 3000 V; • voltage 6300 V or 6600 V (tropical version) • voltage of 10000 V. The burn line is provided at the rated voltage and at lower mains voltage during start-up to 0,8 Unom. Motors allow two successive start-up from cold condition, or one start from hot condition. The interval between successive starts of at least three hours, number of starts not less than 10000 within the operation period, but not more than 500 starts per year during the warranty period. The compound engine with a drive mechanism by means of an elastic coupling. Stator winding has six outlet ends fixed on four isolators in the terminal box. The connection of the phase windings - star. The motors allow the right and left direction of rotation. The direction of rotation is carried out only from rest. Characteristics and distinguishing features of motors series A4 • Can be installed on the Foundation series engines And 12_13 dimensions with the use of transition plates without altering the foundations. Plates are supplied in a set if necessary. • Have an optimum ratio of energy parameters and specific materials consumption. • Have an increased value of overload capacity without durability decrease. • Have a high quality insulation system of the stator winding of the type "Монолит2" of insulation class F with temperature used as class b, which ensures safe performance of engines of up to 20 years of operation. • It is possible to supply in "forced ventilation" instead of self-ventilation. • Has a reinforced hull that reduces sound levels and vibration. • Argon arc welding provides unconditional reliability of rotor winding. • Unification of the A4 series allows on-site to move from protected design (IP23) to closed (IP54) with output reduction by one step. • Seismic resistance and reliability of motors permit their application at nuclear power plants. • Production of engines certified to meet the ISO 9001 standard. Conditional shorthand structure: A4-HL-XK (Example: А4_400ХК_4У3) A - asynchronous motor with squirrel cage rotor 4 - room series H (400, 450) - height of rotation axis in mm L (X,Y. Xk,UK) - the standard length of the engine X (4,6,8,10,12) - the number of poles K (U3, T3) - climatic version and placement category