CDD

Purpose:

CLOSED DISTRIBUTION DEVICES based on POYTAHT cells

Closed switchgear in block-modular buildings is designed for receiving and distributing electric energy of three-phase alternating current with a frequency of 50 Hz, a voltage of 6 (10), 35 kV.

CDD are used in power supply systems for the oil and gas industry, agriculture,and mining. In block-modular buildings, POYTAHT cells or one - way maintenance cameras of the CSR-285, 298, 386, 366 series are installed directly. The normal operation of the outdoor switchgear at negative temperatures and under conditions of dew loss is ensured by a reliable seal of all connections of the shell elements.

The block-modular building provides a system for maintaining the microclimate necessary for the smooth operation of equipment, alarm systems and additional devices at the request of the customer: 

• ventilation: natural, forced, emergency;
•  lighting: internal, external, repair (36V);
• system of automatic maintenance of the set temperature;
• alarm system: security, fire;
• accounting for electricity: passive, reactive;

Part of the CDD includes:

• block-modular building;
• high voltage distribution devices;
• busbar bridge;
• high-voltage input tower (only for air input voltage)
• self-service equipment