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Medium-voltage switchgear

Shrubline VFI Vacuum Fault Interrupter

Eaton Cooper Power series Shrubline VFI vacuum switchgear provides fault interruption and convenient load switching for underground systems through 25 kV. Additionally, the switchgear is designed for outdoor mounting on a concrete pad and employs oil as the insulation medium to provide a compact, low-profile installation.

Vacuum interruption
Fault current interruption and load make/break switching
Deadfront construction
Minimizes high voltage safety hazards
Fully integrated controls package
Meet specific distribution system protection requirements

Core features

  • Provides protection of intermediate in-line faults, tap or branch lines and isolated loads, as well as protection for normally open points in loop-fed URD systems
  • Provides fast, low-energy arc interruption
  • Meets the full requirements of ANSI/IEEE standard 386 for separable insulated connector systems
  • Features a deadfront, tamper-resistant, low-profile construction
  • Includes provisions for padlocking the cabinet to prevent unauthorized door opening

Deadfront, tamper-resistant, low-profile construction minimizes high-voltage safety hazards

Cabinets meet the enclosure security requirements of ANSI standard C57.12.28 and are suitable for operation in areas subject to excessive moisture, occasional flooding and blowing snow.

Bushing wells are standard and externally replaceable

15/25 kV 200A bushing wells are provided as a standard. The wells meet the full requirements of ANSI/IEEE standard 386 for separable insulated connector systems. Bushings are mounted in-line and are located a minimum of 20 inches above the pad. Bushing wells are externally replaceable.
Specifications

Ratings

  15kV 25kV
Maximum design voltage, kV
15.5 27
BIL, kV
95 125
1-Minute withstand (60 Hz) interrupter and terminators, kV
34 40
Continuous current (max), A
200 200
Interrupting current (sym./asym.), kA
12/20 12/20
Momentary current 10 cycles (asym.), kA
20* 20*
3 Sec. (sym.), kA
12* 12*
Making current (sym.), kA
12 12*
Transformer magnetizing interrupting current, A
21 21
Cable charging interrupting current, A
10 25
*Interrupter only. Short time-current ratings of bushings are 10 kA (sym.).

Standard features

  • Pentahead bolt with padlockable hasp to prevent unauthorized door opening
  • Parking stands
  • 15/25 kV bushing wells (standard) meet the full requirements of ANSI/IEEE standard 386
  • Grounding lugs
  • Oil fill plug
  • Liquid sight gauge provides visual indication of liquid level within tank
  • Tri-phase electronic control
  • Shrubline VFI operating handle
  • Oil drain plug and sampler
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