GOST ELECTRIC MOTOR
THREE-PHASE INDUCTION MOTORS
WITH SQUIRREL-CAGE ROTOR FOR GENERAL INDUSTRIAL
AIR and 5A SERIES

GOST ELECTRIC MOTOR

Three-phase induction motors with squirrel-cage rotor include:

Motors of the main (basic) design; Motors with the power capacities and mounting sizes of the CENELEK export standards; Motors with uprated sliding action for mechanisms with pulsating loads, of great fly masses and for mechanisms with frequent start-ups.

The motors are marked as follows:

Series markings (AIR or 5A). Sign of "extra-sliding" modification (S). Dimensions (shaft height, mm). Mounting dimension according to the length of frame (S,M,L). Length of core with mounting sizes preserved (A,B). Number of poles. Sign of power capacity relative to mounting sizes according to the CENELEK standards (K). Climatic design by the RF GOST 15150.

 

     Motors of 5A, AIR and 6A series are made in accordance with the way of installation, depending on the overall dimensions. The symbolism for the design meets GOST 2479 (IEC 34-7) requirements.The initial figure - indicates the construction of the motor: 1-electric motor on feet with bearing shields;
2-electric motor on feet with bearing shields and a flange on a bearing shield.
3-electric motor without feet with bearing shields and a flange on a bearing shield.
5-electric motor without frame, bearing shields or shaft.
The second and third figures indicate the way of mounting of electric motor (see the table below).
The fourth figure indicates the design of motor shaft:
1-with one-cylindrical shaft end;
2-with two-cylindrical shaft ends (made to order to suit the customer's requirements).

 

The electric motors 5A series are completely interchangeable with the corresponding types of the electric motors 4A, AIR series.     The motors are designed for S1 -S6 mode operation GOST 183-74 (power rating is indicated for the continuous mode operation S1) at AC frequency of 50Hz and voltages of 220, 380, 660V. At the customer's specific request, motors with other voltage up to 660V and frequency of 60 Hz can be made on the basis of the above-mentioned machines.     The motors are used in various branches of industry and in agriculture for driving machines, pumps, compressors, ventilators, mills, food choppers, transfer machanisms and so on.