Three-phase electric motors manufactured by a Russian company Eldin with a short-circuited rotor for use in smoke extraction and heat removal equipment, they were developed based on the basic design of the RA series drive, but using a special insulation system, bearings with special lubrication and power connection technology. To date, electric motors for smoke extraction and heat removal are manufactured by a Russian company Eldin The RA series are supplied to customers for use in various industries. Accordingly, the characteristics of electric motors of this class largely determine the efficiency of production in areas where critical or emergency situations related to smoke are possible during operation.
Electric drives of the brand Eldin The RA series for smoke extraction meet all customer requirements in terms of special applications, high technical data, compliance with environmental standards and requirements, and at the same time high operational reliability. As a rule, all electric motors are supplied with a nested key, it should immediately be noted that the drive elements mounted on the shaft (pulley, clutch) must be balanced before operation, taking into account the balancing of the motor rotor. All electric drives of the above series are equipped with radial fans made of plastic or aluminum alloy, operating regardless of the direction of rotation. The standard color of the drives used corresponds to the installation of motors indoors or under a canopy in the open air at a moderate temperature.
Technical parameters of Eldin asynchronous electric motors of the RA series for smoke and heat removal:
- Dimensions: from 112 to 355 mm;
- Type of rotor: short-circuited;
- Voltage: up to 380 V;
- Rated power: from 1.5 to 160 kW;
- Rated speed: from 750 to 3000 rpm;
- Rated current: from 3.6 to 284 A;
- Number of poles: from 2 to 8;
- Frequency: up to 50 Hz;
- Type of mounting design: IM1001, IM2001, IM3001;
- Type of cooling: IC411;
- Insulation class: H;
- Protection class: IP54, IP55.
Technical characteristics of standard sizes of Eldin electric motors of the RA series with a speed of 3000 rpm:
Type electric drive | Power, kW | Speed, rpm | EFFICIENCY, % | The coefficient. capacities | Armature current, But | Moment of inertia, kg*m2 |
RA112M2 | 3 | 2895 | 85.0 | 0.88 | 5.8 | 0.0080 |
RA132SA2 | 4 | 2895 | 86.5 | 0.89 | 7.5 | 0.0145 |
RA132SB2 | 5.5 | 2895 | 88.0 | 0.89 | 10.1 | 0.0173 |
RA132MA2 | 7.5 | 2900 | 88.0 | 0.88 | 14.0 | 0.0195 |
RA160MA2 | 9 | 2940 | 88.4 | 0.89 | 16.5 | 0.039 |
RA160MB2 | 11 | 2940 | 90.0 | 0.86 | 21 | 0.042 |
RA160L2 | 15 | 2940 | 90.0 | 0.87 | 28 | 0.048 |
RA180M2 | 18.5 | 2940 | 90.5 | 0.89 | 33 | 0.055 |
| RA200LA2 | 22 | 2940 | 91.4 | 0.88 | 39 | 0.091 |
| RA200LB2 | 30 | 2950 | 92.0 | 0.88 | 53 | 0.11 |
| RA225M2 | 37 | 2940 | 93.0 | 0.90 | 64 | 0.13 |
| RA250M2 | 45 | 2955 | 93.0 | 0.90 | 78 | 0.20 |
| RA280S2 | 55 | 2965 | 94.0 | 0.89 | 95 | 0.37 |
| RA280M2 | 75 | 2960 | 94.5 | 0.91 | 126 | 0.39 |
| RA315S2 | 90 | 2970 | 94.0 | 0.90 | 154 | 0.49 |
| RA315M2 | 110 | 2964 | 94.5 | 0.90 | 187 | 0.53 |
| RA315LA2 | 132 | 2977 | 95.5 | 0.87 | 229 | 1.15 |
| RA315LB2 | 160 | 2978 | 96.0 | 0.88 | 273 | 1.5 |