Medium Voltage Primary Switchgear - Power Xpert UX

The Power Xpert UX is the latest offering that builds on the success and legacy of Eaton’s Unitole MV switchgear. The UX is a global design that is certified to the latest IEC 62271 -100 and -200 standards. UX is a complete range up to 4000 A, 50 kA-3s short circuit withstand, and 50 kA-0.5s AFLR internal arc classification. The compact UX design is based on Eaton’s leadership vacuum technology and is available in three panel widths (600, 800, 1000 mm) and 12, 17.5, and 24 kV system voltages.

Eaton's latest vacuum circuit breaker, the W-VACi, sits at the heart of Power Xpert UX. The W-VACi, with its advanced vacuum interrupter contact designs yield longer life and are very compact.   
PowerXpert UX Video Presentation

Power Xpert UX video presentation
Safe in use
  • Comprehensive and logical list of mechanical and electrical interlocks
  • Compartments protected against penetration by objects
  • Internal arc rating up to 50 kA for 0.5 seconds and 40 kA for 1 second
  • Internal arc classification of AFLR
  • Loss of service continuity rating of 2B
  • Accessibility of compartments
  • Closed door racking
 
Reliable in operation
  • Vacuum and cast-resin encapsulation technologies
  • CESI certified to latest IEC 62271 -100 and -200 standards
  • Totally enclosed and insulated main busbar
  • 20,000 operations on vacuum breakers
  • Partition classification of PM
 
Efficient over the product life
  • 30 year expected product life
  • Cable access front and rear; cable entry bottom and top
  • Up to 4000 A main busbar and breaker ratings
  • Up to 50 kA short circuit and withstand ratings (3 seconds)
  • SF6 free
  • Low end of life disposable costs with all materials being re-usable or recycled
  • Compact and flexible designs (three widths and two depths of panels)
  • Environmentally friendly throughout the life cycle   

System   12kV 17.5kV 24kV
Rated voltage kV 12 17.5 24
Lightning impulse withstand voltage kV 75 95 125
Power frequency withstand voltage kV 28 38 50
Rated frequency Hz 50/60 50/60 50/60
Internal arc class     ALFR  
Loss of service continuity category     LSC2B  
Partition class     PM  
Earthing circuit kA-s 25 - 3; 26.3 - 3; 31.5 - 3; 40 - 3; 50 - 1   20 - 3; 25 - 3
         
Accessibility of compartments
Circuit breaker compartment     Interlock-controlled  
Busbar compartment     Tool-based/non-accessible  
Cable compartment     Tool-based or Interlock-controlled  
External degree of protection     IP4X (IP41 as an option)  
Internal degree of protection     IP2X (IP3X as an option)  
Installation     Indoor  
Temperature classification °C   -5 to +40  
Relative humidity (max) %   95  
         
Busbar system
Rated normal current A 250, 1600, 2000, 2500, 3150, 4000 (FC*)   1250, 2000, 2500
Rated short-time withstand current kA - 3 s 25 / 26.3 / 31.5 / 40 / 50   20 / 25
Rated peak withstand current kA/50 Hz 63 / 66 / 80 / 100 / 125   63 / 80
  kA/60 Hz 65 / / 82 / 104 / 130   65 / 82
*) FC = Fan cooled.        
         
Circuit breaker ratings    
Rated normal current A 630, 1250, 2000, 2500, 3150, 4000   800, 1250, 2000, 2500
Rated short-circuit breaking current kA 26.3 / 31.5 / 40 / 50   20 / 25
Rated short-circuit making current kA 65 / 82 / 104 / 130   65 / 82
Rated short-time withstand current kA - 3 s 26.3 / 31.5 / 40 / 50   20 / 25
Single capacitor bank switching C2 A 400    
Multiple capacitor bank
switching back to back		 C1 A 400    
Class     S1, E2, C1, C2  
Operating cycles at short-circuit current     100  
Auxiliary voltage V  
110/120/127 Vac 50/60Hz,
208/220/240 Vac 50/60Hz,
24/48/60 Vdc,
110/125 Vdc, 220/250 Vdc		  
         
Mechanism
Rated operating sequence A    
O - 0.3s - CO - 15s - CO
O - 0.3s - CO - 180s - CO		  

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