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Technical parameters of DC switchgears

Name of parameter Unit of meas. Value  
Rated voltage V 600, 750, 825  1500, 1650 3000, 3300
Maximum operating voltage V 1000 2000 4000
Rated insulation voltage V 3000  4800
Rated current of power network A up to 8000*  up to 6000*
Test voltage, 50 Hz, 1 min kV 5 18,5 
Type of high speed circuit breaker - UR 26-81, UR 36-81,
UR 40-81, UR 60-81, UR 80-81, AFB 25, AFB 40  		 UR 26-82, UR 36-82,
UR 40-82, UR 60-82,
UR 80-82		 UR 26-64, UR 36-64, UR 40-64, UR 60-64
Electrodynamic resistance kА 100 80 55
Breaking capacity in noninductive circuit:
rated / peak		 kА 125/180 (UR)
80/100 (AFB®)		  40/57
Control - microprocessor  
Reverse current protection setting А  0.05 - 1 Irated  
Rated voltage of control circuits V 110, 220  
Rated voltage of lighting AC circuits  V 220  
Rated voltage of signaling DC circuits  V 24  
Cooling - natural air  
Protection degree - IP 43  

*- manufacturing of DC switchgears with parameters different from those stated above is made by special order