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Cabinets of KRUE-6V-630-20 U2.1 series switchgears and controlgears for 6 kV excavators

Cabinets of KRUE-6V-630-20 U2.1 series switchgears and controlgears are designed for the reception and distribution of three-phase AC electric power with a frequency of 50 Hz, rated voltage of 6 kV, and rated current of 630 A on excavating machinery operating in mains with low earth fault current.

Cabinets of KRUE-6V-630-20 U2.1 series switchgears and controlgears for 6 kV excavators

KRUE-6V-630-20 U2.1 series switchgear and controlgear cabinets are made of climatic category U2.1 according to GOST 15150.

Normal operation of switchgear and controlgear cabinets is ensured under the following conditions:

  1. ambient air temperature: from -5º C to +40º C;
  2. upper value of the relative air humidity: 98% at 25º C; 
  3. altitude above sea level: no more than 1000 m; 
  4. falling-out of dew inside the cabinet is excluded;  
  5. environment: atmosphere type II according to GOST 15150; at that, it must be non-explosive and fire-safe; 
  6. external mechanical impacts: vibrational load within the frequency range of 1-35 Hz with a maximum acceleration of up to 0.5 g; hit-and-run strikes with a maximum acceleration of up to 3 g and duration of 2-20 ms; trim amd list of up to 15º.  
  Parameter name
Value
Rated (linear) voltage, kV
6; 6.3; 6.6
Maximum operating (linear) voltage, kV
7.2
Rated current of the main circuits of the switchgear and controlgear cabinet, A
630
Rated breaking current of the circuit breaker
embedded in the cabinet, kA
20
Short-time thermal current of the switchgear and controlgear cabinet for time span of 3 sec, kA
20
Short-time electrodynamic current of the main circuits of the switchgear and controlgear cabinet, kA
51
Rated current of HV safety device’s fuse link, A
31.5; 40; 50
Open-circuit current broken by a disconnector, A
1.0
Insulation level circuits of the switchgear and controlgear cabinet according to GOST 1516.1-76
Standard  
Insulation type
Air
Maintenance conditions
Trilateral maintenance
Protection rating according to GOST 14254-96
IP42
Overall dimensions, width x height x depth, mm:
894х2126х1105

Made in accordance with the Corporate Standard Ts 00212883-023:2014.

 
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