Complete switchgear (CS) for mining in the normal version MN of the CDD-MN series

Due to constant work to improve the product, increasing its reliability and improving operation, changes may be made to the design that are not reflected in this publication.

Note: *The highest operating voltage of 7.2 kV refers to the switching capacity and insulation of the breaker and cabinet.
*Electrodynamic and thermal resistance is determined by the technical parameters of current transformers.

Distribution devices of the CS-MN series are designed for the distribution of electrical energy in networks with a voltage of 6 kV with an isolated neutral with a frequency of 50 Hz, protection of electrical installations and control of underground electrical receivers in iron ore and coal mines. CS-MN multi-cabinet, indoor installation, stationary, double-sided service, with withdrawable elements, with local and remote control. CS-MN cabinets are used to complete distribution points and can be connected into separate sections. The sections are connected to each other by a sectional cabinet. The distribution point may consist of one, two or three sections. CDD-MN cabinets and the products attached to them are of normal mine design.
Cabinets of the CS-MN series comply with the requirements of GOST 24754-2013 (regarding the requirements for cabinets of complete switchgears for voltages above 1000 V) and GOST 12.2.007.4-96, as well as design documentation.
The main advantages of cabinets of the CS-MN series:

1. increased reliability in operation due to the use of modern high-voltage switching devices with a high mechanical and switching life;
2. use only copper busbars;
3. relay protection is provided through the use of modern microprocessor units;
4. placement of auxiliary circuit equipment in a separate removable relay cabinet, which is completely isolated from power current-carrying circuits;

Terms of Use:

1. ambient temperature from -10˚С to +45˚С;
2. relative humidity up to 100% at a temperature of 35˚C;
3. altitude above sea level – no more than 1000 m;
4. working position in space – vertical (permissible deviation of 0.17 rad in any direction);
5. dust content in the ambient air up to 8 mg/m3, dust is non-flammable, non-explosive, conductive;
6. the environment should not contain caustic vapors and gases in concentrations that destroy metal and insulation;
7. the device must be protected from direct contact with water;

-nominal values ​​of climatic factors according to GOST 15150-69 and GOST 15543.1-89