Power Xpert® UX

EC Metal-enclosed Single Busbar, Solid- and Air-insulated, Vacuum Medium

Voltage Switchgear, up to 24 kV

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.

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  • Features

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    • 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
    Power Xpert UX complies with the following international standards
    IEC 62271-1 Common specifications
    IEC 62271-100 Circuit breakers (E2, M2, C2)
    IEC 62271-102 Disconnectors and earthing switches (E2, M0)
    IEC 62271-200 Metal enclosed switchgear and controlgear
    IEC 60044-1 Current transformers
    IEC 60044-2 Voltage transformers
    IEC 60529 Degrees of protection (IP Code)
    IEC 61850 Communication networks and systems in substations
    IEC 61243-5 Live working - voltage detectors - Part 5: voltage detecting systems
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  • Technical Details

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    System   12 kV 17.5 kV 24 kV
    Rated voltage kV 12 17.5 24
    Lightning ipulse 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     AFLR  
    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
    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 1250, 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 Indoor
    Class °C 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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