Asynchronous electric motors of the AK4 series

Asynchronous electric motors of the AK4 series

AC4 electric motors with a phase rotor of the AK4 series are designed to drive mechanisms with difficult conditions of starting and requiring speed control:

  • For mechanisms, the moment of which does not depend on the rotation frequency, the control of the rotation frequency is allowed in the range (1.0-0.8) N Nom ;
  • For mechanisms, the moment of which changes according to the fan characterization, rotation frequency regulation is allowed in the range (1.0-0.5) N Nom .

Engines are designed to operate from a variable current network with a frequency of 50 Hz with a voltage of 6000 V and 3000 c.

Starting engines from a full voltage of the network with the rotor circuit with starting resistance using the control station.

The connection of engines with the drive mechanism is carried out through an elastic coupling.

Engines have rolling bearings with plastic lubricant.

Izolation materials windings of the stator and rotor of the heating resistance class “F” with temperature use in class “B”. Isolation of the stator winding thermoreactive type “Monolith-2”.

The stator winding has six output ends fixed on four insulators in the box of conclusions. Connection of phases of windings - star.

Engines allow the right and left direction of rotation. Changing the direction of rotation is carried out only from a state of rest.

Distinctive characteristics and design features of AK4 engines:
  • They can be replaced by previously installed electric motors of the AK, AKZ 12 and 13 dimensions, complete with a transition stove or beams for installation without alteration of the foundation;
  • Have an optimal ratio of energy indicators and specific material consumption;
  • Enhanced lining compared to analogues;
  • Complete unification by strata with A4 and Dazo4 electric motors;
  • It is possible to supply in execution that allows the connection of compulsory ventilation;
  • Provided complete supply with launch vehicle such as an UPRF, which starts the type of TPRS and the type of thyristor switch Tret, TTRP.

The structure of the symbol:
  • AK4-HL-XK (example: A4-400XK-4U3)
  • AK - asynchronous engine with phase rotor
  • 4 - series number
  • H (400, 450) - the height of the rotation axis in mm
  • L (x, U. HK, Criminal Code) - conditional engine length
  • X (4,6,8,10,12) - the number of poles
  • K (U3, T3) - climatic execution and category of accommodation

asynchronous electric motors with a phase rotor of the AK4 6000 V series, 50 Hz
IP23 protection degree ICO1 cooling method
Form of execution IM1001 Operating mode S1
No. n Type
engine 		Power., KW

Frequency,
rpm

efficiency, %

CoEff-T
Powerful.

Mass, kg
1 AK4-400XK-4UZ 400 1500 93.5 0.88 2100
2 AK4-400X-4U3 500 1500 94.0 0.87 2250
3 AK4-400U-4U3 630 1500 94.7 0.89 2480
4 AK4-450X-4U3 800 1500 94.7 0.89 2800
5 AK4-450U-4U3 1000 1500 95.2 0.90 3120
6 AK4-400XK-6U3 315 1000 92.9 0.85 2140
7 AK4-400X-6U3 400 1000 93.3 0.86 2300
8 AK4-400U-6U3 500 1000 93.6 0.87 2500
9 AK4-450X-6U3 630 1000 94.0 0.87 2850
10 AK4-450U-6U3 800 1000 94.4 0.87 3170
11 AK4-400x-8U3 250 750 92.5 0.82 2240
12 AK4-400U-8U3 315 750 92.8 0.83 2450
13 AK4-450UK-8U3 500 750 93.6 0.84 2990
14 AK4-450X-8U3 400 750 93.2 0.83 2750
15 AK4-450U-8U3 630 750 94.0 0.84 3280
16 AK4-400X-10U3 200 600 91.1 0.78 2210
17 AK4-400U-10U3 250 600 91.9 0.79 2410
18 AK4-450X-10U3 315 600 92.3 0.83 2650
19 AK4-450U-10U3 400 600 92.6 0.83 2890
20 AK4-450X-12U3 250 500 91.3 0.77 2740
21 AK4-450U-12U3 315 500 92,1 0.77 2970
22 AK4-400XK-4T3 6/6.6 kV 315 1500 93,1/93.4 0.87/0.86 & nbsp;
23 AK4-400X-4T3 6/6.6 kV 400 1500 93.4/93.7 0.89/0.88 & nbsp;
24 AK4-400U-4T3 6/6.6 kV 500 1500 93.8/94.0 0.89/0.88 & nbsp;
25 AK4-450X-4T3 6/6.6 kV 630 1500 94.3/94.3 0.89/0.89 & nbsp;
26 AK4-450U-4T3 6/6.6 kV 800 1500 94.5/94.6 0.90/0.89 & nbsp;
27 AK4-400XK-6T3 6/6.6 kV 250 1000 92.8/93.0 0.85/0.83 & nbsp;
28 AK4-400x-6T3 6/6.6 kV

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