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K-59 series switchgears and controlgears for 6(10) kV

K-59 series switchgears and controlgears are designed for the reception and distribution of three-phase AC electric power with commercial frequencies of 50 Hz and 60 Hz at voltages of 6 kV and 10 kV.

K-59 series switchgears and controlgears for 6(10) kV

K-59 series switchgears and controlgears are used as 6(10) kV switchgears as well as the switchgears of transformer substations or (modular) package transformer substations of 35/6(10), 110/6(10), 110/35/6(10), or 220/110/35/6(10) kV.

Two versions of the K-59 series outdoor switchgear and controlgears are manufactured: heat-insulated cold-weather version (double-walled with polyurethane foam panels between the walls) with automatically operated heating, and another version, with single walls, is designed for temperate climate.

The K-59 series outdoor switchgear and controlgear represents a block of free-standing high-voltage cubicles, with switchbays, an auxiliary cabinet (auxiliary transformer), and high-frequency communication cabinet. For step-down substations without developed 6(10) kV switchgear, free-standing cabinets with voltage transformers can be provided.

The K-59 series outdoor switchgear and controlgear has the following advantages:

  1. improved fireproof heat insulation material;  
  2. rigid welded construction; 
  3. aluminum and copper busbar; 
  4. reliable interlocking of wrong actions of the maintenance personnel;
  5. use of all types of high-voltage switching devices located on drawout components;  
  6. microprocessor-based protection units; 
  7. full localization of sections; 
  8. high operational compatibility; 
  9. highly sensitive arc protection on the photothyristors; 
  10. short mounting time; 
  11. state-of-the-art technologies (powder coating, cutting, bending and punching of the metal by means of automated systems) are applied for their manufacturing.

The K-59 series outdoor switchgear and controlgear is designed for the operation in different climatic areas; has U (moderate) and KhL (cold) climatic categories and placement category 1 according to GOST 15150 and GOST 15543 (and climatic categories N and F according to IEC).

Normal operation of the K-59 switchgear and controlgear is provided under the following conditions:

  1. altitude above sea level: no higher than 1000 m; 
  2. wind velocity: 34 m/s at ice thickness of 20 mm; in the absence of ice, wind velocity is up to 40 m/s.

This switchgear and controlgear is allowed to be used for the operation at an altitude of over 1000 m above sea level; at that, it is necessary to follow the requirements of GOST 8024, GOST 1516.1-1, GOST 14693.

The product has been certified by the National Certification System of the Republic of Uzbekistan and Certification System of the Russian Federation (GOST-R). 

Parameter name
Value
Rated voltage, kV
6; 10
Maximum operating voltage, kV
7.2; 12
Rated current of the main circuit of the switchgear and controlgear, A
630; 1000; 1600; 2000; 3150
Rated current of busbars, A
630; 1000; 1600; 2000; 3150
Rated breaking current of the circuit-breaker embedded in the switchgear and controlgear, kA
16; 20; 25; 31.5
Short-time thermal current at a lead time of 3 sec, kA
20; 31.5
Short-time electrodynamic current of the cubicles’ main circuits, kA
51; 81
Insulation level according to GOST 1515.1
Standard insulation; level II* (2.25cm/kV)
Insulation type
Air
Availability of the insulation of live parts
With non-insulated busbars
Availability of drawout components in the switchgear and controlgear
With drawout components and without drawout components
Type of linear HV connections
Aerial / Cabled
Maintenance conditions
Bilateral maintenance
Climatic category of the K-59 series switchgear and controlgear according to GOST/IEC
U1/N1
KhL1/F1
Protection rating according to GOST 14254-96
IP34
IP54
Availability of heat insulation
Without heat insulation
With heat insulation
Overall dimensions of the switchgear and controlgear cabinets, mm
·       width
·       depth
·       height
 
750
3065
2970
 
750
3180
3060
Ambient temperature, °C
+40°; -40°
+40°; -60°
Weight, no more than, kg
1300
Altitude above sea level, m
1000

Made in accordance with the Corporate Standard Ts 00212883- 016:2014.

 
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