Supply of a STDM-2000-2Z UHL4 synchronous turbomotor to drive the N-3400-21-1 axial supercharger for the needs of the Moscow Metro.

REP Holding JSC is a leading Russian power engineering holding, developer, manufacturer and supplier of new generation power equipment. Carries out design developments, manufacturing and comprehensive supplies of energy and electrical equipment for the gas, oil, metallurgical and chemical industries, for the energy and electrical grid complex.

Today, REP Holding is one of the key power engineering enterprises in Russia, specializing in the development and production of innovative energy products that are used to modernize the gas transportation system during the construction of modern power units and power plants in the oil industry and other industries.

As part of the project to modernize the air supply equipment of the State Unitary Enterprise "Moscow Metro", REPH JSC was chosen as the main supplier of technological equipment.  An important factor for the decision was the fact that Nevsky Zavod, which is part of the holding, is one of the oldest industrial enterprises in St. Petersburg. Today, Nevsky Plant is a leading power engineering enterprise and the main manufacturer of axial superchargers in Russia.

During the preparatory work for upgrading the equipment, a non-standard task was identified that required high-quality development. At this stage, EnergoFront was hired as an expert in the field of electric drive to solve tasks on changing engine dimensions and designing additional equipment.

Initially, the STDM-2000-2 electric motor manufactured by Elektrotyazhmash-privod LLC, manufactured in 1974, was installed at the facility. But at the moment, the tunnel through which equipment was delivered 40 years ago has been concreted. The only way to the site was a vertical well with dimensions of 1980x1300 mm. The standard electric motor STDM-2000-2Z could not be delivered to the site due to the discrepancy in dimensions. To solve this problem, the EnergoFront company, together with the Tyazhmash-Privod engineering center, has developed ways to change the dimensions of the electric motor.

The second stage was to develop and design a special frame that ensures vertical transportation of the electric motor into the well, its further movement through the tunnel to the object and tilting.

And finally, together with specialists from Energokomplekt LLC, an excitation control cabinet SHUV-2K-6.3-75D UHL4 with the possibility of reactor start-up was developed. The reactor start-up algorithm was developed and approved with the customer. In addition, the control cabinet will subsequently provide additional analog signals: motor current, active power of the motor, reactive power of the motor.

Project achievements