Production of 18 units Mobile Communication Complexes and DGS TE.25S-T400-2RN 18 units, delivery of spare parts

Techexpo provided supplies for a national-scale project with a development horizon of over 50 years. The destination for the equipment supply is located in the Far East of the Russian Federation. Therefore, in accordance with the request and wishes of the Customer, all project documentation was completed in 2 languages – Russian and English.

What are the features of the project?

The main feature of the project is the implementation of standards and conformity of products to the corporate identity of the Customer. To fulfill this order, Techexpo not only manufactured the required number of units, but also paid special attention to the Customer's technical requirements for operating conditions in a subarctic climate. The project also provided for special container design: the Customer's branding was applied to them in accordance with the request within the framework of the approved design project.

The main technical features of the project

A total of 18 mobile communication complexes (MCC) with prefabricated prefabricated antenna-mast structures (AMS) and 18 sets of spare parts for them were delivered under the project. As well as 18 diesel electric power plants TE.25S-T400-2RN for them with a set of spare parts. The MCC is intended to be located in the Chukotka Autonomous District: on the Arctic Circle, 430 km by air from the port of Pevek on the coast of the Arctic Ocean.

The minimum and maximum air temperature limits are from -60 to +34C. According to climatic conditions, the МСС location area belongs to the region of the Far North, with a harsh subarctic climate, with widespread permafrost. The MCC is designed to accommodate the equipment of the base communication station (BS), as well as to ensure its normal operation without the constant presence of personnel. The mobility of the MCC is ensured by the presence of metal skids for movement on the surface in conditions of snow cover.

Equipment Features

Technical characteristics of BС MCC:

• Transport overall dimensions, mm — 8770x3100x3255;

• Overall dimensions in the working position, mm – 8770x3300x16580;

• The height of the antenna-mast structure from the support frame to the top point is 15 m (excluding the lightning receiver);

• The service life of the MCC is at least 25 years.

MCC configuration:

• All-welded block container with processing equipment;

• A ladder to the entrance door with a fence;

• Visor over the front door;

• Stairs to the roof of the ISS;

• Metal structures for the placement of external units of air conditioners;

• Metal runners;

• Locking supports;

• Coupling device (drawbar);

• Prefabricated antenna-mast structure;

• Pipe-resistant for external cable attachment;

• A set of equipment for lifting AMS.

During the implementation of DGS, automatic oil heating in the crankcase, coolant from a liquid heater, and a diesel air heater were also provided. The capacity of the DGS batteries is provided with a margin. A symmetrical three-phase transformer is also installed to ensure load balance. 

The color scheme of the exterior of the BCS meets the requirements of the corporate identity of the Customer. The color scheme and branding of the containers were carefully coordinated before starting work on the project.

Antenna-mast structure (AMS)

The MCC package includes an AMS, a collapsible structure consisting of sections of the same length. In order to increase stability, it is planned to mount the AMC to the supporting parts of the ISS using metal struts that provide the necessary rigidity and structural strength. Tripwires were also provided to ensure the stability of the ISS.

For each ISS, a DES consisting of 1 DSU of 25 kW was supplied for installation at the field as the main source of electricity.

Completeness of the DGS:

• All-welded block container with processing equipment;
• DGS with a capacity of 25 kW;
• Fuel tank 950 L;
• Removable visor;
• Removable breathing valve of the fuel tank;
• External fuel filler neck;
• The transformer is a symmetrical three-phase.

Main characteristics of TE.25C-T400-2RN DGS manufactured by Techexpo LLC:

Container design

Main power, kW/kVA — 25/31

Rated current, A — 45

Type of current — alternating, three-phase

Fuel consumption at 100% load, l/h — 7.6

Capacity of the standard fuel tank, l — 950

Characteristics of the YANMAR 4TNV98 engine

Engine type — diesel, four-stroke

Main power, kW — 30.7

Engine displacement, l — 3,319

Number and arrangement of cylinders — 4, in-line

Engine speed, rpm —1500

Liquid cooling

Type of fuel — seasonal diesel fuel

Characteristics of the Leroy Somer LSA42.3S5 (AREP)

Alternator type — synchronous 4-pole

Automatic voltage regulator (AVR) for up to 10 seconds — 300% of rated current

The permissible short — circuit current is 300%, for 10 seconds

Voltage regulation accuracy +/-0.5% Insulation class H

Technical protection level IP 23

Insulation class H

The warranty period for the delivered products is 24 months from the date of commissioning. The project was completed on time and all the wishes of the customer were fulfilled.