Complete outdoor switchgear (COS) SERIES K-59

COS series K-59 is designed for receiving and distributing electrical energy of alternating three-phase current of industrial frequency 50 Hz at a rated voltage of 6 and 10 kV and completing switchgears with a voltage of 6 and 10 kV substations, including complete transformer substations 35/6-10 kV, 110/ 6-10 kV and 110/35/6-10 kV.

To complete the distribution devices installed in the K-59 series COS, cabinets of the K104 or KM-1KF series are mainly used, which are equipped with modern switching, relay and microprocessor equipment from the world’s leading manufacturers.

Technical characteristics of KM-1KF cabinets

Name of parameters

Parameter values

Highest operating voltage, kV

7.2; 12

Rated voltage, kV

6.0; 10.0

Type of cabinets used in COS, (main)

CDD cabinets series K104 and KM-1KF

Rated current of the main circuits of cabinets used in COS, A

630; 1000; 1250; 1600;2000; 2500; 3150

Rated current of busbars, A

up to 3150

Insulation of live parts

Air, with non-insulated tires

Terms of Service

Double-sided, with control corridor

Type of linear high-voltage connections

Cable, overhead

Cabinet control type

Local, remote

Climatic modification and placement category according to GOST 15150-69 and GOST 15543.1-89

U1 – with partial thermal insulation; HL1 –
with reinforced thermal insulation

Degree of protection of the electrical equipment shell in COS according to GOST 14254-96

Not less than IP30

terms of Use

Climatic version according to GOST
15150-69

U1 or HL1 with normal and reinforced external insulation

Nominal value of climatic factors according to GOST 15150-69 and GOST 15543.1-89

  1. upper operating value of air temperature during operation
  2. lower operating value of air temperature during operation

– for execution U1
– for execution HL1

 

not higher than plus 40°С, with an average daily design temperature not higher than plus 35°С

 

not lower than minus 45°С not lower than minus 60°С

Height above sea level

no more than 1000 m

Wind speed

no more than 34 m/s

Daily temperature difference

no more than 25ºC

Sun irradiation intensity

no more than 1000 W/m2

Average monthly relative humidity

no more than 90%

Resistance to mechanical stress according to GOST 17516.1-90

M39

Seismic resistance according to MSK-64 scale

no more than 9 points

Ice coating thickness, mm

no more than 20

Degree of air pollution

II class

COS series K-59 is not intended for operation in environments subject to increased pollution, exposure to gases, vapors and chemical deposits that are harmful to insulation. Ensuring the normal operation of cabinets in COS series K-59 at sub-zero ambient temperatures is ensured with the help of heating devices.
The heating temperature of parts of the cabinet shell installed in COS series K-59, which can be touched during operation, in nominal mode should not exceed plus 50 ° C. The highest permissible heating temperature for contact connections of cabinets installed in COS series K-59 is plus 75°C (GOST 8024-90).

COS series K-59 is designed for receiving and distributing electrical energy of alternating three-phase current of industrial frequency 50 Hz at a rated voltage of 6 and 10 kV and completing switchgears with a voltage of 6 and 10 kV substations, including complete transformer substations 35/6-10 kV, 110/ 6-10 kV and 110/35/6-10 kV.

Installation of COS series K-59 is carried out on concrete beds and does not require any additional construction work. COS series K-59 comply with the technical requirements and safety and quality requirements of the Organization Standard ST JSC 990640000421-40-2018, interstate standards GOST 14693-90, GOST 12.2.007.4-96, valid in the Republic of Kazakhstan.

KRUN series K-59 are certified for compliance with quality and safety requirements in the State System of Technical Regulation of the Republic of Kazakhstan.

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