Asynchronous electric motors for NPP 4AMU90-355

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Induction motors 4AMU90-355 with a squirrel-cage rotor designed to drive electric pumping units, located in «clean» premises and «dirty» boxes (outside the sealed area) NPP ( version A3).
Engines – earthquake resistant. Required seismic resistance category according to PNAEG-5-006 and safety class according to PNAEG-01-011-97 specified in the technical requirements for the delivery of a specific engine.  
The level of seismic effects on engines of III category of seismic resistance is taken 6 points on the MSK-64 scale.
Protection class IР55. Insulation class – F.
Executions according to the method of installation in accordance with GOST 2479: on paws – IM1001;
Climatic performance – U2 according to GOST 15150.
The motors are designed for operation in S1 mode with an AC mains supply with a frequency of 50 Hz, tension 380/660 V
Temperature control sensors are installed in the stator winding (3 pieces, serial connection diagram).
To monitor the bearing temperature, each bearing unit is equipped with one resistance thermocouple with a nominal static characteristic Pt100 and a three-wire connection.
Electric motors have an input device, located on top and can be turned by 180° .
Engines are manufactured according to technical specifications BIYAN.525522.007TU.
Technical characteristics and installation and connection dimensions of the motors fully correspond to the base engines 4AMU90-280, 6AMU315-355 (see link: 4AMU90-280, 6AMU315-355)