K-XXVI series switchgears and controlgears
K-XXVI series switchgears and controlgears are intended for the reception and distribution of AC electric power with commercial frequency of 50 Hz, voltages of 6 and 10 kV, and current of 630÷3150 A in the auxiliary system of thermal and nuclear power plants, as well as for the switchgears of stations and substations of industrial and other facilities of the national economy.
K-XXVI series switchgears and controlgears are designed for indoor operation (climatic category is UKhL3 according to GOST 15150 (NF3 according to IEC)) under the following conditions:
- altitude above sea level: up to 1000 m;
- upper (effective) value of ambient temperature: no higher than +40º C;
- lower value of ambient temperature: no lower than -25º C;
- atmosphere type: II according to GOST 15150 (approximately similar to the atmosphere of industrial areas).
K-XXVI series switchgear and controlgear cabinets have the following advantages:
- rigid welded construction;
- aluminium and copper busbar;
- reliable mechanical interlocking;
- vacuum switching elements;
- microprocessor-based protection units;
- easy maintenance and serviceability, easy access to any cabinet components;
- full isolation of sections;
- arc protection of the photothyristors;
- the cabinet design provides for various versions of bussed lead-ins and busbar bridges between the switchgear and controlgear cabinet rows;
- state-of-the-art technologies (powder coating, cutting, bending and punching of the metal by means of automated systems) are applied for their manufacturing.
Protection and automatic equipment:
- by using electromechanical relays;
- by using microprocessor-based relays “BMRZ”, “Orion”, “Sirius”, “TEMP”, etc.
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Parameter name
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Value
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|---|---|
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Rated (linear) voltage, kV
|
6; 10
|
|
Maximum operating (linear) voltage of the cabinets, kV
|
7.2; 12
|
|
Rated current of the main circuits of the switchgear and controlgear cabinets, A
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630; 1000; 1600
|
|
Rated current of the busbars, A
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1000; 1600; 2000; 2500; 3150
|
|
Rated breaking current of the circuit breaker embedded in the switchgear and controlgear cabinet, kA
|
12.5; 16; 20; 31.5
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Short-time thermal current, kA
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20; 31.5
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Short-time thermal current lead time, sec.
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3
|
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Rated short-time electrodynamic current of the main circuits, kA
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51; 81
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Rated frequency, Hz
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50
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Insulation type
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Air
|
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Maintenance conditions
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Bilateral maintenance
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|
Rated control voltage, V
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=220; ~220
|
|
Overall dimensions, width x height x depth, mm:
|
900х2372х1685
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Cabinet weight with the circuit breaker, kg
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900±100
|
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Control type
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Local; remote
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The cabinets of K-XXVI series outdoor switchgear and controlgears are made in accordance with the Technical Specifications TSh 64-178117952-018:2005.
The product has been certified by the National Certification System of the Republic of Uzbekistan and Certification System of the Russian Federation (GOST-R).