LV MCC with Arc Flash Mitigation (AFM) Units - ABB Group...June 30, 2015 LV MCC with Arc Flash...

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Technical Tuesday June 30, 2015

LV MCC with Arc Flash Mitigation (AFM) Units

Markets

Suitable for almost any application!

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•Oil and Gas

•Petro-Chemical

•Mining and metals

•Pharmaceuticals

•Pulp and paper

•Mass-production manufacturing

•Water & Waste Water

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E9000 with Arc Flash Mitigation (AFM) Units

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IEEE-1683-2014 Description:

• Functional design recommendations and field practices for low voltage motor control centers.

• The intent is to reduce the probability that an incident will occur when qualified persons are performing certain activities.

• The recommendations augment the existing requirements of applicable standards for motor control centers.

• It provides a framework where specifiers and users can

select MCC features and system characteristics that are applicable to their specific situation and needs.

• These recommendations complement existing workplace safety standards, site practices, and site procedures.

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New Level of Arc Flash Mitigation

GE E9000 AFM units are designed to reduce exposure

to electrical shock and the potential of arcing faults

from occurring during certain activities. The retractable

stab mechanism allows for closed-door racking of the unit. This provides added

protection to electrical personnel from the dangers of an arc flash occurrence.

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New Level of Arc Flash Mitigation

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The use of a compact NEMA rated contactor in the AFM units will allow a minimum

of IP10 protection with optional IP20 terminal

protection in size 1 through 4 starter units. This also

provides the ability to reduce the overall footprint

required.

Other IP20 protection options are available in

each starter unit including IP20 control power

transformer fuses and pilot devices.

Standards, Guidelines, & Ratings UL 508, UL845, IEEE 1683 & ICS-18

Ratings

• Main Bus: 600 - 2500A

• Vertical Bus: 300/600/850A

• NEMA & IP10 rated C2000 contactor

• Unit Type: Plug-in only

• Voltage: 480 & 600VAC

• Short Circuit: 100K AIC @ 480V and 65K AIC @ 600V or 100K AIC with Fused Sw

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Unit Types Available Unit Types:

• Main breaker ( “G” Frame 600A max)

• Feeder breakers (15-600A), Fused Sw to 200A

• Surge Protection Devices (SPD)

• Variable Frequency Drives (VFD)

• Full voltage non-reversing starters (FVNR)*

• Full voltage reversing starters (FVR)*

• ASTAT Reduced Voltage Solid State Starters

(RVSS) *Standard offering Size 1-4 utilizes C2000 contactor

Optional 300 line offering available in sizes 1-5

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Reduced Density Solution Example of AFM starter units

The E9000 AFM MCC

solution is designed to optimize the physical footprint required for installation. We accomplished this by using GE’s compact C2000 NEMA rated contactor as our standard offering.

* Our traditional 300 line NEMA contactor is available as an option

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Reduced Density Solution Various AFM Units The E9000 AFM MCC

solution is designed to optimize the physical footprint required for installation. We accomplished this by using GE’s compact C2000 NEMA rated contactor as our standard offering.

* Our traditional 300 line NEMA contactor is available as an option

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Arc Flash Mitigation Safety Solutions

2 position, closed door, retractable unit stabs

Automatic operation vertical bus isolation shutter

Stab & Shutter position Indicators on unit doors

Stab assembly Disengaged/Test Position

Stab assembly Engaged Position

Stab assembly Engaged Position Simple and robust guide structure to assist with proper alignment of the

stabs and reliable operation.

Racking Mechanism Disengaged Engaged

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Racking Screw Interlock Unit disconnect open Unit disconnect closed

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Mechanical safety Interlocks

Stab and Door interlock –

prevent opening the unit door

when stab is energized

Stab and Unit interlock –

prevent removal of unit or

insertion of unit with stab

energized

Racking screw and

Disconnect – prevent racking the

unit in or out with disconnect

“ON”

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Mechanical safety Interlocks

Stab and Door interlock –

prevent opening the unit door

when stab is energized

Stab and Unit interlock –

prevent removal of unit or

insertion of unit with stab

energized

Racking screw and

Disconnect – prevent racking the

unit in or out with disconnect

“ON”

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Automatic Bus Isolation Shutters Shutters Closed Shutters Open

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Mechanical safety Interlocks STAB & SHUTTER Position Indicator

Stab and Door

interlock – prevent

opening the unit door

when stab is

energized

Stab and Unit

interlock – prevent

removal of unit or

insertion of unit with

stab energized

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Padlocking Provisions

Padlocking provisions

Disconnect handle

Stab and Door interlock –

prevent opening the unit door

when stab is energized

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Padlocking Provisions

Padlocking provisions

Prevent unit insertion

Stab and Unit interlock – prevent

removal of unit or insertion of

unit with stab energized

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OPTIONAL IP 20 PROTECTION IP20 CPT Fuse Incidental Contact Barrier

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Retractable Stabs

Each unit is placed into

the MCC section.

Rotating the racking

screw clockwise

initiates the racking

mechanism moving

the stabs from the

disengaged position to

the engaged position

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Stab/Shutter Position Indicators

Safety Awareness & Ease of Maintenance

Safety interlocks prevent opening of the unit door and racking out the stabs

when the stab is energized. The visual indicators on the front of the units

provide personnel with a clear view of the status of the stabs and isolation

shutters. This allows personnel to quickly assess the state of the equipment and

make appropriate decisions before operating the units. Visual indication will

also be available on the remote racking device.

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Additional Safety Device Options

Remote Racking Device • Motor to controller

cord length = 40

feet

• Automatic motor

shut off at specific

toque limit.

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Additional Safety Device Options Remote Racking Device

Controller showing ENGAGED condition

Controller showing DISENGAGED condition

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Additional Safety Device Options Remote Racking Device Manual Racking Device

The racking handle shown is used to safely ENGAGE and DISENGAGE the AFM unit stab with the vertical bus.

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Additional Safety Device Options

Voltage Vision

• Test for absence

of voltage

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Additional Safety Device Options

Motor Guard

•Motor

insulation tester

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Additional Safety Device Options

Infrared Thermal Scanning

•Available at Main bus and on

larger units.

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Retrofit your existing E9000 MCC with new AFM units!

Shutter Actuator Shutter Shutter Guide Unit Shelf

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E9000 with Arc Flash Mitigation (AFM)

Infrared Thermal Scanning

Main 800A Breaker

PQMII Metering

AFM Units

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E9000 with Arc Flash Mitigation (AFM)

• Retractable Stab Mechanism

• Isolation Shutter Mechanism

• Shutter Indicator Mechanism – 2 Positions

• Stab Indicator Mechanism - 2 Positions

• Padlocking While In Test Position

• Interlocking Mechanisms

• Retractable Stab, Unit and Door

• Retractable Stab and Breaker

• Remote Racking Mechanism

• Infrared Thermal Scanning Provision

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Questions