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Medium-voltage switchgear

VacClad-W 27 kV metal-clad medium voltage switchgear

Eaton’s VacClad-W switchgear is a metal-clad medium-voltage solution that can be custom-engineered to fit a wide array of application and safety requirements. This versatile 27 kV medium-voltage switchgear can be assembled in various combinations to meet specific usage requirements. It’s a trusted choice for applications such as control and distribution, main-main automatic transfer, main-tie-main automatic transfer, main service disconnect, switching, and more.
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Fundamentals of switchgear Medium-voltage switchgear and assemblies capabilities brochure
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Voltage Class
up to 27 kV
Continuous Current
up to 3000 A
Interrupt Rating
up to 40 kAIC
  • Utilizes the medium-voltage VCP-W vacuum interrupter circuit breaker
  • Compartmentalized metal-clad design
  • Insulated bus conductors and connections
  • Automatic shutters that open and close with breaker racking position
  • 2-high breaker over breaker configurations available for indoor and outdoor designs
  • Closed door racking
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  • Ohmic Voltage Sensing (OVS) to replace traditional Voltage Transformers (VTs) for improved reliability and safety as OVS is not susceptible to switching transients and requires no maintenance
  • Integral Motorized Remote Racking (MR2) for circuit breakers
  • Eaton's partial discharge monitoring solution Insulgard can be integrated including the required radio frequency CTs for online partial discharge monitoring
  • Proven continuous thermal monitoring solution through Exertherm sensors installed in a tested configuration for accurate and consistent readings
  • Meter and relay integration including Eaton's EDR, PXE, and PXQ families
  • Automatic transfer schemes for main-tie-main or other configurations
  • Infrared viewing windows for manual connection monitoring
  • Roll-on-the floor breakers
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  • IEEE C37.20.2 Medium-Voltage Metal-Clad Standard 
  • CSA C22.2 No. 31 Switchgear Assemblies 
  • UL and CSA third party certification and labeling optional 
  • IBC/CBC seismic labeling and design optional
  • OSHPD seismic labeling and design optional  
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Which design is right for you?

  Indoor Outdoor Aisleless Arc-resistant (Type 2)
 
Standard Width 36" 42"
Standard Depth 118" (108" available for some configurations) 123" 107.5"
Standard Height 100" 121" 90.37" + 40" for arc plenum
Voltage Rating Up to 29.8 kV Up to 27 kV
Amperage Up to 3000A Up to 2000A
Short Circuit Rating Up to 40 kA rms symmetrical

Automatic transfer schemes

When providing redundant power sources for critical power applications, select the:

  • Eaton ATC-900 controller for lineups with main-main, main-generator or generator-generator applications
  • Eaton PLC with Eaton touchscreen for automatic main-tie-main transfer
  • Eaton’s Power Distribution Monitoring and Control solution for main-tie-main transfer schemes and to adjust settings and sequence details

View design guide (layouts, technical data and application information)

Download guide spec (26 13 26)

Learn more about power system design basics

Image gallery

Scroll to view various images of metal-clad equipment

Switchgear, front view, doors closed
Top auxiliary drawer in withdrawn position
MV Switchgear outdoor aisleless with doors open, breaker drawn out
MV Switchgear Outdoor Aisleless with door open
MV Switchgear Outdoor Aisleless with doors closed
Breaker cell without breaker
Auxiliary fuse drawer over control power transformer (CPT)
Withdrawable Control Power Transformer (CPT) in drawer
Rear view of MV switchgear
Transformer Connection
Rear Cable Connections, bottom entry
MR2 motorized remote racking pendant

Enhance worker safety

Remotely employ motorized racking to safely move breakers and auxiliary drawers from outside the arc flash boundary.  Learn more about MR2

Safeguard against switching transients

Ohmic voltage sensing (OVS) increases reliability over traditional  core and coil voltage transformers. Watch this brief video for an overview of the benefits of including an OVS system to protect against damaging transients.  
Learn more

Related products

Specifications

View design guide (layouts, technical data and application information)

Download guide spec (26 13 26)

Learn more about power system design basics

View arc-resistant design guide (layouts, technical data and application information)

Download arc-resistant guide spec (26 13 26 11)

Ratings

RATED MAXIMUM VOLTAGE 27 kV (tested to 29.8 kV for 27.6 kV service voltages)
CONTINUOUS CURRENT Up to 3000A
INTERRUPT RATING Up to 40 kA rms symmetrical
BASIC IMPULSE LEVEL (BIL) 27 kV class - 125 kV peak

Standards

ANSI / IEEE STANDARD C37.20.2; Arc-Resistant tested to C37.20.7 (Type 2)
CSA C22.2 No. 31
THIRD PARTY APPROVAL/RECOGNITION UL, CSA, CSA(US) available for most non-arc-resistant equipment ratings
SEISMIC QUALIFICATION IBC, CBC, OSHPD/HCAI available for most ratings

Enclosure

ACCESS Front & Rear required
INSULATING MEDIUM Air
BUS INSULATION Epoxy (fluidized bed)
BUS SUPPORTS Glass polyester, Epoxy

 

Devices

SWITCHING DEVICE Vacuum circuit breaker
AUXILIARY DRAWERS Control power transformers, voltage/potential transformers, power fuses
DEVICE MOUNTING Draw-out
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