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Karasay District, 50 Tsentralnaya St.

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Cell KRN-III,IV

Cell KRN-III,IV

Complete switchgear of the outdoor installation (KRU)

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Complete switchgear units of the KRN III-IV-10 kV series


Outdoor complete switchgear KRUN-6(10) of the KRUN-10 series is designed for the reception, distribution, metering, and protection of AC electrical networks with a frequency of 50 Hz and a voltage of 6 (10) kV. KRUN-6(10) is operated without permanent maintenance personnel.

KRUN-10 is intended for the equipment and expansion of CTS-35/6-10, as well as standalone 10(6) kV switchgears. Delivery of KRN-10 fully assembled on a frame as a single unit of up to 3-6 cabinets for 10(6) kV fully factory-ready switchgears is possible (with input, line diagrams, sectional breaker with ATS, AUX transformer, voltage transformer). KRUN-6(10) is designed for use in power supply systems for construction mechanization.

KRN-10 Operating Conditions:
  • UHL climatic execution, placement category I according to GOST 15150-69;
  • upper value of ambient air temperature: +40°C;
  • lower value of ambient air temperature: -40°C*;
  • average daily design temperature not higher than +35°C
  • altitude above sea level no more than 1000 m;
  • environment - non-flammable, non-explosive, free from aggressive gases and vapors in concentrations that destroy metal and insulation; not subject to increased contamination.
  • *custom manufacturing down to -60°C is available

Technical Specifications of KRN 

Parameter NameParameter Value
Highest operating voltage, kV 7,2;12
Rated voltage, kV 6,0; 10,0
Transformation ratio of current transformers, A 50; 100; 150; 200; 300; 400; 600
Thermal withstand current, kA 25
Electrodynamic withstand current, kA 81
Insulation level according to GOST 1516.1 - 76 Normal
Insulation type Air
Presence of insulation on live parts With uninsulated busbars
Maintenance conditions Double-sided
Protection degree according to GOST 14254-96 IP34 - splash-proof execution
Presence of thermal insulation Without thermal insulation
Control type Local, remote
Inlet type Cable / Overhead (Air)
Type of KRN cabinets depending on built-in equipment - with disconnectors
- with circuit breakers

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