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VFI single-phase pad-mounted transformer

Eaton’s Cooper Power series VFI single-phase pad-mounted transformer combines voltage transformation and sectionalising in a compact, money-saving package. Delivering comprehensive system protection, the vacuum fault interrupter transformer enables utilities to dramatically reduce the duration and scope of outages while optimising performance.

VFI rating
200 A continuous
Interrupting rating
12,000 A rms

Core features

  • Reduces the number of customers impacted by an outage by up to 50%
  • Cuts time required to locate a fault by up to 50%
  • Provides ultimate reliability and flexibility through an extensive range of programmable controls and settings
  • Ideal for residential applications where space is limited or inline fault or radial tap protection is difficult
  • VFI sectionalising capabilities deliver superior system protection
  • Slashes installation costs, complexity and space requirements compared to separate single-phase transformer and switchgear installations
  • Helps improve SAIDI and SAIFI metrics
  • Utilises industry-standard protection schemes to deliver unparalleled transformer overcurrent and fault protection
  • Provides ease of use with resettable breaker operation, programmability and coordination with upstream and downstream protection devices
  • Offers safety and security with deadfront construction, coupled with aesthetically pleasing, low-profile Shrubline (ANSI Type-2) design
  • Meets or exceeds industry standards including ANSI, NEMA and DOE Energy Efficiency

Decrease the duration and scope of outages

The VFI transformer is capable of isolating faults up to 50% faster than conventional fused equipment – and can cut the number of affected customers in half. By dramatically reducing downtime, the VFI helps utilities enhance customer satisfaction.

Get more protection in less space

Only Eaton combines a transformer and sectionaliser in the smallest possible footprint, providing unparalleled reliability for underground systems with faster installation at a lower overall cost.

One solution, multiple applications

The VFI transformer easily coordinates with upline and downline protective devices as system changes occur. Use to tap off a main underground feeder; in place of a three-way junction cable; to sectionalise points on a long or densely loaded feeder; in high potential cable failure areas; and as a tie point between two systems.