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Ampgard AR arc-resistant medium-voltage motor control (2.5, 5.0, 7.2 kV)

Ampgard AR arc-resistant medium-voltage motor control is certified to IEEE Std. C37.20.7-2017 and is designed to safely contain and redirect exhaust gases away from the operator in the event of an arc flash incident. Ampgard AR is rated arc-resistant Type 2B enhancing safety from the front, sides and rear of the enclosure, even with the low-voltage control doors open. The robust construction of the Ampgard AR is designed to resist the forces of an arc fault up to 50 kA for a full 0.5 seconds.

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Voltage Class
2.4 kV
5 kV
7.2 kV
Horsepower
up to 3000 Hp
up to 5000 Hp
up to 8000 Hp
Main Bus Rating
up to 3000 A

Các tính năng cốt lõi

  • Designed and tested to meet UL 347
  • Third party tested and verified arc-resistant to IEEE C37.20.7-2017
  • Includes Eaton’s Type SL vacuum contactors with the industry’s highest interrupting ratings
  • Proven durability with a long-life isolation switch rated for 10,000 mechanical operations
  • Completely front accessible
  • Top-mounted main bus for convenient installation and maintenance
  • Two-high 400 A and one-high 800 A starter configurations
  • Starter types include full voltage non-reversing (FVNR), reduced voltage reactor (RVR), reduced voltage autotransformer (RVAT) and reduced voltage solid state soft starter (RVSS)
  • Available with Eaton EMR series of motor protection relays for comprehensive and safe motor monitoring and starting control

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

Download guide spec (26 18 39 01)

Learn more about power system design basics

Image gallery

View images of Ampgard arc-resistant medium-voltage motor control

Ampgard RVSS – available in arc-resistant design
Optional bus differential CTs, rear view
800A Starter with door open
Incoming line, 2-high 400A, 800A rear view without plenum
400A Starter with fuse isolation barrier removed
400A isolation switch
400A main fuses, rear view
Incoming line, 2-high 400A, 800A front view without plenum
400A fuse isolation barrier

Safer by design

Ampgard AR is designed with cutting edge features to protect personnel in the event of an arc fault. The isolation switch features ionized gas barriers which significantly reduce the risk of an arc fault by preventing the propagation of ionized gas barriers within the isolation switch. The main fuse compartment is designed to direct exhaust gases away from personnel by placing an additional service barrier between the arc fault and personnel.

ampgard-ar-pressure-relief-500x500.jpg

 

Watch this video to learn more about Ampgard AR, the next generation of arc-resistant medium-voltage motor control.

Remote operator for enhanced safety

The Ampgard Remote Operator (ARO) for the starter isolation switch when mounted on the front of the starter allows personnel to safely open and close the switch from outside the arc flash boundary.
View brochure

Integrated control gear streamlines multi-configuration lineups

Compact and economical solution combining Eaton’s Ampgard motor starters with the SC9000 medium-voltage drive family across a common bus in a single high quality, integrated assembly. Entire assembly is available as arc-resistant.

Ampgard, the name motor applications rely on

Eaton has been an industry leader for more than 50 years, providing UL 347 certified medium-voltage control. When it comes to controlling and protecting medium-voltage motors, the Ampgard family is the premier high-performance choice.
Learn more

Money saving double-bus design

When close-coupling Ampgard starters with medium-voltage drives for synchronous transfer applications the double bus eliminates external cables and associated accessories required to connect motor-select and bypass starters. Material and labor savings can be upwards of $25,000 for a four-motor system.
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Thông số kỹ thuật

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

Download guide spec (26 18 39 01)

Learn more about power system design basics

Ratings

POWER RATING 50-8000 Hp
INPUT VOLTAGE RATING 2400-6900 V
BASIC IMPULSE LEVEL (BIL) 60 kV BIL
INTERRUPTING RATING 50 kA rms symmetrical
AMBIENT TEMPERATURE 0 to 40 degrees C

Standards

UL                                                                                        347
NEMA ICS3
CSA 22.2 no. 253-16
THIRD PARTY RECOGNITION/APPROVAL UL/cUL available for most configurations
SEISMIC QUALIFICATION IBC

Enclosure

ENCLOSURE TYPE
 Arc resistant
ACCESSIBILITY
 Front
INDOOR SECTION DIMENSIONS (TYPICAL)
 36"w x 50"d x 128"h
BUS INSULATION Heat shrink sleeve
BUS SUPPORTS Glass polyester

DEVICES

SWITCHING DEVICE
 Vacuum contactor (400A / 800A)
CONTACTOR CONNECTION
 Bolted is standard, stab-in is optional
FUSE MOUNTING Bolted
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