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K-61 series switchgears and controlgears for a voltage of 6(10) kV and a current of 630÷4000А

K-61 series switchgears and controlgears are intended for the reception and distribution of three-phase AC electric power with a commercial frequency of 50 Hz, voltage of 6(10) kV, and current of 630÷4000 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-61 series switchgears and controlgears for a voltage of 6(10) kV and a current of 630÷4000А

K-61 series switchgears and controlgears are designed for indoor operation (climatic category is UKhL3 according to GOST 15150-69 (NF3 according to IEC)) under the following conditions:

  1. altitude above sea level: up to 1000 m;
  2. upper (effective) value of ambient temperature: no higher than +40º C;
  3. lower value of ambient temperature: no lower than -25º C; 
  4. atmosphere type: II according to GOST 15150-69 (approximately similar to the atmosphere of industrial areas).

If it is necessary to use K-61 series switchgear and controlgear in spaces with ambient temperature below minus 5º C, installation of heating elements ensuring normal temperature conditions for the operation of its accessory devices and automatically going on at a temperature below minus 25º C is provided for in the switchgear and controlgear cabinet.

 

Parameter name
Value
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
630; 1000; 1600; 2000; 3150; 4000
Rated current of the busbars, A
2000; 2500; 3150; 4000
Rated breaking current of the circuit breaker embedded in the switchgear and controlgear cabinet, kA
20; 31.5; 40
Short-time thermal current, kA
20; 31.5; 40
Short-time thermal current lead time, sec
3
Rated short-time electrodynamic current of the main circuits, kA
128
Rated frequency, Hz
50; 60
Insulation type
Air
Maintenance conditions
Bilateral maintenance
Rated control voltage, V
=220; ~220
Overall dimensions, no more than, mm:
Cable inlet (outlet) cabinets for a current of up to 1600 A:
width x height x depth
900х2372х1685
Bussed inlet (outlet) cabinets for a current of up to 1600 A:
width x height x depth
750х2268х1600
Cable inlet (outlet) cabinets for a current of over 1600 A:
width x height x depth
750х2268х1400
Bussed inlet (outlet) cabinets for a current of over 1600 A:
width x height x depth
1125х2268х1400
Weight of one cabinet, no more than, kg:
for a current of up to 1600 A
for a current of over 1600 A
 
800
1500

Made in accordance with the Corporate Standard TSh 64-00212883-042:2012.

 

Attached documents:

  • Indoor switchgear & control gear of K-61 series technical description.

    type: pdf | size: 9 MB
    Indoor switchgear & control gear of K-61 series technical description.
    Download

 
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