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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 |
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| Parameter Name | Parameter 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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