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Medium-voltage switchgear

VacClad-W 27 kV arc-resistant, metal-clad, medium-voltage switchgear

VacClad-W arc-resistant switchgear is a metal-clad, medium-voltage switchgear designed to safely contain and redirect the thermal energy and blast from an arc-fault, should one occur, regardless of the originating location of the arc.  The 27 kV VacClad-W arc-resistant switchgear has a Type 2 rating with an arc-flash boundary of zero, offering enhanced safety.

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VOLTAGE CLASS
up to 27 kV
CONTINUOUS CURRENT
up to 2000 A
INTERRUPT RATING
up to 40 kAIC

Core features

  • Certified arc-resistant Type 2, as per IEEE C37.20.7
  • Compartmentalised, metal-clad design conforming to IEEE C37.20.2 and CSA C22.2 No. 31-14
  • Horizontal drawout circuit breakers and VT/CPT drawers
  • Provided with mechanical interlocks for proper operating sequence
  • Insulated bus conductors and connections throughout
  • Protection and metering as per customer’s specifications
  • Rated for indoor applications
  • CSA or CSA(US)  available for most ratings

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

Download guide spec (26 13 26 11)

Find out more about power system design basics

Image gallery

Scroll to view various images of arc-resistant, metal-clad equipment

VacClad main bus support
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VacClad breaker compartment pan
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VacClad breaker compartment terminal blocks
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VacClad rear cable connections bottom entry
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VacClad main bus support
VacClad breaker compartment pan
VacClad breaker compartment terminal blocks
VacClad rear cable connections bottom entry

Arc flash. Contained.

An arc-flash explosion can release toxic fumes, thermal heat, sound waves and pressure. Arc-resistant equipment is designed to safely contain and redirect arc energy, no matter where the arc originated.
Ten things about arc-flash safety

Medium-voltage switchgear 3D interactive

Take a closer look at VacClad-W switchgear
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Enhance worker safety

Remotely employ motorised racking to safely move breakers and auxiliary drawers from outside the arc-flash boundary.  Find out more about MR2

Eaton’s Electrical Engineering Services and Systems

With more than 1,500 experts in 60 locations throughout Canada and the USA and more around the world, Eaton’s Electrical Engineering Services and Systems team is one of the largest and most experienced service organisations in the industry.
Specifications

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

Download guide spec (26 13 26 11)

Find out more about power system design basics

Ratings

RATED MAXIMUM VOLTAGE
 27 kV
CONTINUOUS CURRENT
 1200 A  to 2700 A
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 & C37.20.7 (Type 2)
CSA
 C22.2 No. 31-14
THIRD-PARTY APPROVAL/RECOGNITION
 CSA or CSA(US)  available for most ratings
SEISMIC QUALIFICATION
 IBC, CBC

Enclosure

ACCESS
 Front & rear required
INSULATING MEDIUM
 Air
BUS INSULATION
 Epoxy (fluidised bed)
BUS SUPPORTS
 Glass polyester
ENCLOSURE TYPE
 Indoor
INDOOR SECTION DIMENSIONS (TYPICAL)
 1070mm (42”) w x 2770mm (109”) d x 3300mm (130”) h

Devices

SWITCHING DEVICE
 Vacuum circuit breaker
DEVICE MOUNTING
 Drawout
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New to switchgear?

Find out about the fundamentals of medium-voltage switchgear

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