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Specifications

Ratings

    15 kV 15 kV 25 kV 35 kV
Maximum design voltage, kV 15.5 15.5 27.0 38.0
BIL, kV 95 95 125 150
1-minute withstand voltage (60 Hz), kV 35 35 60 70
Momentary current, 10 cycles (sym.), kA 12.5 16.0 12.5 12.5
1-second withstand current (sym.), kA 12.5 16.0 12.5 12.5
Vacuum fault interrupter Continuous current, (max.), A 600** 600 600** 600
Interrupting current (sym./asym.), kA 12.5/20.0 16/25.8 12.5/20.0 12.5/20.0
Making current (sym.), kA 12.5 16.0 12.5 12.5
Cable charging interrupting current, A 10.0 10.0 25.0 40.0
Load-break switch Continuous current, (max), A 600 600 600 600
Load switching, A 600 600 600 600
Fault making (sym./asym.), kA 12.5/20.0 16/25.8 12.5/20.0 12.5/20
* Continuous and short-circuit currents may be limited by ratings of selected bushings
** 900 A and 1200 A continuous-current ratings are also available

Standard features

  • Liquid level or pressure gauge
  • Lift-up roof with retainers
  • Side recessed lifting provisions
  • Pentahead bolt with padlock provisions
  • 200A bushing wells or 600A bushings
  • Accessory parking stands
  • Drain plug
  • Tri-phase control
  • Single, double side, compact
  • Up to 6-way units

Optional accessories

  • Ground rod or flat buss
  • Kirk key interlock provisions
  • Visible break with optional ground
  • Single-phase or three-phase trip
  • Operation counter
  • Fault indicator provisions
  • Auxiliary switch
  • Microprocessor-based Idea relay
  • Motor actuator

Applicable standards

  • IEEE Std C37.74-2003 standard, Standard Requirements for Subsurface, Vault, and Pad-Mounted Load-Interrupter Switchgear and Fused Load-Interrupter Switchgear for Alternating Current Systems Up to 38 kV
  • IEEE Std C37.60-2003 standard, Standard Requirements for Overhead, Pad-Mounted, Dry Vault, and Submersible Automatic Circuit Reclosers and Fault Interrupters for Alternating Current Systems Up to 38 kV
  • IEEE Std C57.12.28-2005 standard, Standard for Pad-Mounted Equipment—Enclosure Integrity
  • IEEE Std C57.12.29-2005 standard, Standard for Pad-Mounted Equipment—Enclosure Integrity for Coastal Environments –applicable when stainless steel construction is specified
  • IEEE Std 386-2006 standard, Standard for Separable Insulated Connector Systems for Power Distribution Systems Above 600 V
  • IEEE Std C37.90-2005 standard, Standard for Relays and Relay Systems Associated with Electric Power Apparatus
  • IEEE Std C37.90.2-2004 standard, Standard for Withstand Capability of Relay Systems to Radiated Electromagnetic Interference from Transceivers

UL listing and labeling options

  • 15 kV and 25 kV voltage ratings
  • 600 A continuous current rating
  • 12.5 kA symmetrical interrupting rating
  • Fluid Dielectrics (mineral oil, E200 and Envirotemp FR3 fluids)
  • Visible-break switch (two- and three-position)
  • Mild and stainless steel construction
  • Tri-phase and TPG control
  • All standard combinations of load switches and fault interrupters

Features and benefits

  • Deadfront construction improves operator safety
  • Sealed design is resistant to flooding and contamination
  • 5 & 6 way units are ideal for large complexes with multiple loads
  • Idea relay allows enhanced protection and communications
  • Single or three phase tripping for commercial or residential applications
  • Visible break with ground allows grounding without disconnecting cables
  • Envirotemp FR3 and E200 insulation eliminates environmental compliance costs
  • Optional solid cooper grounding rod makes grounding simple and convenient
  • Resettable VFI allows immediate service restoration