Published on March 9, 2014
CENTERLINE® 2100 Motor Control Centers with ArcShield™ Power HOTT event – May 2010 (Confidential – For Internal Use Only) Copyright © 2009 Rockwell Automation, Inc. All rights reserved. 1
CENTERLINE 2100 Motor Control Centers Have Always Offered Safety By Design Design • CENTERLINE 2100 MCCs have safety advantages over other types of enclosures Operation • Dependable CENTERLINE 2100 MCCs help prevent unplanned outages Service and Maintenance • CENTERLINE 2100 MCCs help provide a safer working environment when service and maintenance is needed Fault Containment • CENTERLINE 2100 MCCs robust design helps contain arc flash events
Why is Arc Flash a Concern? A dangerous condition such that contact or equipment failure can result in electric shock, arc flash burn, thermal burn or blast.
What is an Arc Flash? The Nature of Electrical Arcs • • Luminous discharge of current that is formed when a current jumps a gap (through air or gas) in a circuit or between two conductors Electric arcs produce some of the highest temperatures known to occur on earth – up to 35,000o F – Energy released is a function of system voltage, fault current magnitude and fault duration. – Intense heat causes sudden expansion of air, resulting in very strong air pressure – Copper and other materials vaporize and expand in volume (Copper – 67,000 times, Water–1670 times) • • The air blast can spread molten metal to great distances with force Inside an enclosure, the enclosure could magnify blasts and transmit energy as the blast is forced to the open side of the enclosure and toward the worker.
Increased Focus on Arc Flash Safety • Historically, electric codes/safety codes have been primarily concerned with protection from fire, electrocution and shock hazard – arc flash hazards were not directly addressed • In 2002, NEC added Article 110.16 and reinforced the flash protection marking of equipment • NFPA 70E ”Standard for Electrical Safety in the Workplace” – Intended to help protect employees from electrical hazards in the workplace • Not a standard for the design, installation, modification or construction of electrical systems or equipment – In 2004, underwent extensive revision, including emphasis that arc flash hazards are a focus of all users • In 2007, IEEE C37.20.7 “IEEE Guide For Testing … Metalenclosed Switchgear … For Internal Arcing Faults” was revised. Scope expanded to include low voltage switchgear •OSHA considers the NFPA standard a recognized industry practice
Arc Flash Safety Importance • Prevent potential loss to organizations through loss of skilled manpower, litigation fees, higher insurance costs, and loss of morale • Increase process uptime by reducing accidents • Occupational Safety and Health Administration (OSHA) refers to keeping workers safe around electrical equipment without referencing any specific standard – NFPA 70E provides guidelines on employee electrical safety • UL 845 – “Standard for Motor Control Centers” does not address arc fault performance of low voltage motor control centers – Specific performance criteria is mandated under bolted fault, short circuit conditions
Minimize Risk from Arc Flash Hazard CENTERLINE LV MCCs with ArcShield • CENTERLINE® 2100 NEMA Motor Control Center with ArcShield – – First and only arc resistant NEMA low voltage MCC today Meets IEEE C37.20.7 Type 2 accessibility level • • • • Type 2 accessible enclosure provides extra protection for personnel at front, sides and rear Device Limited Rating, 65kA max, up to 600V Arc Duration Rating, 65kA max, up to 480V CENTERLINE® 2500 IEC Motor Control Center with ArcShield – – • Personnel and assembly protection per IEC/TR 61641:2008 300ms arc duration rating, 65kA max, up to 415V IntelliCENTER Technology helps enhance safe operation – Remote monitoring, configuration and troubleshooting • • Keeps doors closed Keeps personnel out of arc flash boundary •Reduce exposure to Arc Flash hazards with Arc Resistant LV MCCs
CENTERLINE 2100 MCC with ArcShield Device Limited Arc Resistant Rating Maximum 1200 ampere bus with specific current-limiting protection 15” or 20” Deep Sections Manual or Automatic Shutters Insulating Covers on Horizontal Bus Closing Plates Arc-Resistant Latches on All Doors Arc Resistant Rating Label Copper Vertical Ground Bus and Heavy Duty Ground Stab on Plug-in Units Arc Resistant Baffles
CENTERLINE 2100 MCC with ArcShield 100 ms Arc Resistant Rating Pressure Relief System Manual or Automatic Shutters Insulating Covers on Horizontal Bus Closing Plates Arc-Resistant Latches on All Doors Arc Resistant Rating Label Reinforced Backplates Bolted Down Unit Support Pans Vertical wireway baffle Reinforced door hinges Horizontal Ground Bus at Top and Bottom Copper Vertical Ground Bus and Heavy Duty Ground Stab on Plug-in Unit Copper Unit Load Ground Bus and Unit Connectors Vertical angles at each end of MCC Polycarbonate Baffles at each end of lineup 20” Deep Sections Required
CENTERLINE 2100 MCC with ArcShield Two Ratings Available • No longer have limitations for – Horizontal bus ampere rating – Specific main protective device Arc Resistant Rating Rated Voltage Available Fault Current Horizontal Bus Current Rating Section Depth Horizontal Bus Closing Plate Insulation Arc Latches on Vertical Wireway Door Vertical Bus Isolation Vertical Plug-in Ground Bus Vertical Load Ground Bus Horizontal Ground Bus Top-Plate Pressure Relief System (Requires 12" minimum clearance above MCC) Reinforced Backplate and Sidesheet Vertical Angle at Each End of MCC Line-Up Vertical Wireway Baffle Arc Containment Latches Unit Support Pans Door Hinges Door mounted devices allowed (Control stations, HIMs, viewing windows, etc.) Vented Units Allowed (Engineered) 0.5 Space Factor Unit Allowed Delivery Program CENTERLINE 2100 with ArcShield Device Limited Up to 600V Up to 65 kA 600 - 1200 A 15" or 20" Yes Yes Automatic or Manual Shutters Required 100 ms Arc Duration Up to 480V Up to 65 kA 600 - 3000 A 20" Yes Yes Automatic or Manual Shutters Required Copper or Copper/Tin Required Copper or Copper/Tin Required Optional Copper or Copper/Tin Required Top, Bottom or Both Top and Bottom Required Not Required Required Not Required Not Required Not Required 2 Latches/Door Standard Standard Required Required Required All Latches Bolted Reinforced Yes Yes Yes, with Arc Resistant Baffles No Yes Pre-Engineered No Engineered
CENTERLINE 2500 MCC with ArcShield 300ms Arc Resistant Rating Pressure Relief System Arc-resistant Latches Automatic Shutters • Non-vented enclosure • Copper vertical ground bus on withdrawable structures • Heavy duty ground stab on withdrawable units Insulating Covers on Horizontal Bus Closing Plates
Minimize Exposure to Arc Flash Hazards with ArcShield and IntelliCENTER Technology Monitor, configure & troubleshoot without opening unit doors • Available DeviceNet port-in-door allows connection to the network at the MCC without having to open enclosure doors • IntelliCENTER software allows remote monitoring, configuring and troubleshooting of all units on the network
Monitor, Configure & Troubleshoot with MCC Doors Closed CENTERLINE LV and MV with ArcShield and IntelliCENTER Technology Maintenance/Troubleshooting Activities Unit Door Position Personnel Location Overload detection (monitor warning/trip) Closed Outside Flash Boundary Change overload relay setting (FLA and Trip Class) Closed Outside Flash Boundary Measure/monitor phase currents Closed Outside Flash Boundary Measure baseline motor current Closed Outside Flash Boundary Ground fault detection (monitor warning/trip) Closed Outside Flash Boundary Monitor motor thermistor Time to trip, Time to reset Closed Closed Closed Outside Flash Boundary Outside Flash Boundary Outside Flash Boundary Reset overload relay Closed Outside Flash Boundary Event history Closed Outside Flash Boundary Verify control power Closed Outside Flash Boundary Verify starter operation Closed Outside Flash Boundary Unit documentation Closed Outside Flash Boundary Remote maintenance and troubleshooting helps keep personnel safe Closed Outside Flash Boundary from electrical and arc flash hazards Component identification
Responding to Eaton/Cutler-Hammer FlashGard MCC Claims for Arc Flash Safety John Kuroski Product Marketing Manager CENTERLINE 2100 MCCs (Confidential – For Internal Use Only) Copyright © 2009 Rockwell Automation, Inc. All rights reserved. 24
CENTERLINE 2100 MCCs with ArcShield • CENTERLINE 2100 MCCs offer an extensive list of features to address safety • With an increased focus on arc flash safety, CENTERLINE 2100 with ArcShield can help reduce Arc Flash Hazards – The first LV MCC offering arc-resistant features – Type 2 accessible enclosure provides extra protection for personnel at front, sides and rear as defined by IEEE C37.20.7-2007 • IntelliCENTER Technology helps enhance safe operation – Remote monitoring, configuration and troubleshooting • Keeps doors closed • Keeps personnel out of arc flash boundary •CENTERLINE 2100 MCC with ArcShield is the only low voltage NEMA/UL MCC to provide Type 2 Accessibility
Have you heard the noise? • Eaton has been aggressively promoting arc flash safety with their FlashGard MCCs • Their material raises some questions – – – – – Web pages Product Focus document White Paper Communications Newsletter Customer Webinar (July 2009) Brochure Customer Webinar Website White Paper Sales Training Tools (found on web) • In our opinion, Eaton is making some false claims and misleading statements •Let’s set the record straight All ‘Flash’ and No ‘Gard’
Eaton FlashGard Claims Claim #1: First in the Market Claim #2: Arc Resistant Design Claim #3: Addresses Arc Flash Dangers Claim #4: Spring-loaded Quarter-turn Latches Available as Standard Arc Containment Feature Claim #5: Lowers Probability of Electric Shock Claim #6: Reduces Hazard Risk Category Claim #7: Reduces Time Available Fault Current
Claim #1: First in the Market October 2006 CENTERLINE 2100 MCC with ArcShield Press Release March 2007 Eaton FlashGard Press Release According to my calendar, October 2006 came before March 2007
Claim #2: Arc Resistant Design “Eaton has designed and developed the industry's first ever Arc Flash Resistant Low Voltage Motor Control Center (MCC). “
Claim #2: Arc Resistant Design • Don’t be confused - “Arc Flash Resistant” is not a standard industry term, “Arc Resistant” is a recognized industry term defined by IEEE C37.20.7-2007 – This is a slippery slope for Eaton to go down as they may be providing a false sense of security for users expecting an arc resistant design • FlashGard MCCs are not an arc resistant design! – FlashGard provides no protection to personnel from internal arc flash events
Claim #2: Arc Resistant Design • Eaton claims that since IEEE C37.20.7-2007 is a switchgear standard, it does not apply to low voltage MCCs, WHY? – Perhaps FlashGard simply CANNOT withstand the effects of internal arcing faults for the tests prescribed in IEEE C37.20.7-2007 – They briefly discuss how they “performed an IEEE C37.20.7 test” and look, their door stayed closed, no big deal, anyone can do it, but • Eaton has not conducted the appropriate tests for the affects of a fault inside the unit • If FlashGard could meet the requirements of IEEE C37.20.7-2007 they would promote it • IEEE C37.20.7-2007 is the only standard available applicable to low voltage electrical equipment and yes, it is a switchgear standard – But Mr. Customer, Wouldn’t you want your LV MCC held to the stringent standard for switchgear? – Meeting the testing requirements means ArcShield is held to the highest arc resistant standard available and provides a clear indication for expected performance in the event of an arc flash
Claim #3: Addresses Arc Flash Dangers • A comprehensive approach to Arc Flash safety must include all personnel – FlashGard’s prevention only approach to arc flash dangers is really only addressing the safety of electrically-qualified workers performing electrical work – IEEE C37.20.7-2007 is intended to address arc flash hazards which might occur during “normal” operation of the equipment, like turning ON a handle or resetting an OL relay • Arc faults can also occur during normal operation without a specific human action and affect someone ‘minding their own business’ • CENTERLINE 2100 MCC with ArcShield can help address arc flash dangers with arc flash reduction/prevention and arc containment for all personnel, electrically qualified and non-qualified – Reduction/prevention of arc flash dangers – Containment (Protection) of arc flash events No matter how much prevention you do, there is still that chance an arc fault could occur. FlashGard users may be operating under a false sense of security.
Claim #4: Spring-loaded Quarter-turn Latches Available as Standard Arc Containment Feature • Containment and protection is more than just a latch • Eaton CANNOT claim arc containment just because they have a spring-loaded latch – They have not demonstrated the ability to contain a fault that would occur in the unit • ArcShield provides a complete structural solution, with the ability to contain and re-direct the arc energy away from personnel – Structural integrity that has been built into CENTERLINE 2100 MCCs since 1972 • Well isolated horizontal bus and vertical bus insulated in a non-conductive labyrinth support • Automatic vertical bus shutters • Unit Isolation • Dedicated unit ground stab and vertical ground bus • Two sidesheets on every section – The arc-containment latches have been performance tested and are a critical component Eaton for the Type 2 Accessibility refers to equipment required to meet IEEE C37.20.7 as “Being built like a tank” In our opinion, being built like a tank is great for safety. CENTERLINE 2100 MCCs are industrial grade MCCs which could last for decades
Claim #5: Lowers Probability of Electrical Shock • The Standard CENTERLINE 2100 Bus System provides very low probability of arc flash and shock – Horizontal bus is well isolated to prevent accidental contact • Located in the middle of the structure – Even with MCC top plate removed, there is another isolating steel barrier • Continuously supported in a recessed pocket on the bus support • Horizontal bus insulation is available – Vertical bus uses a non-conductive labyrinth vertical bus support which is standard and has been for over 35 years! • Completely surrounds vertical bus, provides continuous support • Automatic shutters are available to isolate stab openings when units are removed – Vertical ground bus and plug-in unit ground stab are standard for and has been for over 19 years (optional prior to that)
Claim #6: Reduces Hazard Risk Category
Claim #6: Reduces Hazard Risk Category • We believe Eaton is intentionally creating confusion around this by implying FlashGard reduces incident energy during removal and insertion of stabs by keeping the door closed – This is misleading and potentially one of the most dangerous parts of their claims • For LV MCCs, no standard allows reduction of the risk category just because door is closed • Even if you could reduce the risk category by keeping the door closed, the real question is: Will the door will stay closed in the event of a fault in the unit? – Any tests associated with IEEE 1584 is only to verify calculations, NOT for testing the affects of an arc flash on equipment – They are not even doing the test IEEE 1584 describes, their test was conducted with a fault behind the unit, NOT in the unit Only when using an MCC that has been designed and tested in accordance with IEEE C37.20.7-2007 should a user have any expectation of maintaining closed doors during an internal arcing fault
Claim #6: Reduces Hazard Risk Category • Even with FlashGard RotoTract, a worker intending to work on a unit still needs a level of PPE based on the NFPA 70E guidelines for working on an energized unit WHY? – You cannot use mechanical flags or a voltage sensing device to determine an “electrically safe condition” – To determine an electrically safe condition, it is necessary to use a voltmeter • Test the voltmeter on a known energized source • Test the equipment being evaluated • Re-test the voltmeter on a known energized source • After this verification, Eaton implies the worker is safe to work on the unit – This might lead a worker to reduce his PPE to a lower category, perhaps even CAT 0 – Unless the equipment is designated as arc resistant, the worker is exposed to increased risk for bodily harm if an arc fault occurs elsewhere in the MCC Even when working on an electrically safe unit, if you are in front of a live MCC, reducing your PPE could expose you to significant risk
Claim #7: Reduction of Time Available Fault Current • Requires a circuit breaker with a trip unit which incorporates the Arcflash Reduction Maintenance System (ARMS) • ARMS must be manually switched on to activate the protective feature • When ARMS is active, the circuit breaker will trip with no time delay if trip current value is exceeded • Selective coordination with downstream circuit breakers is compromised • Worker must remember to de-activate ARMS or the power system will remain non-selectively coordinated – i.e. fault on downstream circuit breaker may result in the circuit breaker with ARMS tripping. If this is the main circuit breaker, a blackout will occur and all power will be lost to the MCC
Claim #7: Reduction of Time Available Fault Current • The CENTERLINE 2100 MCCs with or without ArcShield can also be fed by a circuit breaker which includes the Arc Flash Reduction Maintenance System • For simplified operation, the CENTERLINE 2100 MCC can also incorporate a solution to automatically activate and deactivate the ARMS Maintenance mode – SafeZone™ laser scanner • Can help ensure “Maintenance Mode” is used when personnel are present • Senses presence of personnel within defined arc flash boundary to automatically activate and deactivate ARMS “Maintenance Mode” • Can help prevent “Maintenance Mode” from being left active when not needed, reducing nuisance faults
Tale of Two Solutions Eaton FlashGard CENTERLINE 2100 with ArcShield Labyrinth vertical bus support Yes Yes Automatic vertical bus shutters Yes Yes Unit Isolation Yes Yes Unit ground stabs and vertical ground bus Yes Yes Unknown Yes Yes Available Finger-safe components Available Available Door mounted accessories Available Available Arc Reduction Maintenance System (ARMS) Available Available Remote diagnostics and monitoring Limited IntelliCENTER & Integrated Architecture Withdraw unit stabs with door closed Limited to plug-in units No No Per IEEE C37.20.7-2007 Type 2 Accessibility No Yes End closing plates insulation Prevention Insulated bus Arc resistant Protection & Arc containment latches on all doors Containment CENTERLINE 2100 with ArcShield is superior to Eaton FlashGard Yes No for both prevention and containment ofNo internal arc faults Yes Two sidesheets on every section Rugged, industrial MCC structure
Arc Flash Services • Comprehensive services to assess and approve the Arc Flash Safety within facilities – – – – – Arc Flash Hazard/Risk Analysis Power Coordination Studies Mitigation Services MCC Retrofits Other related services •These services are available through CSM
Current Sales Tools • Product Profile – 2100-PP019 • Installation Instructions – 2100-IN012 • Customer PowerPoint • Arc-Flash Protection Marking Guide for CENTERLINE Motor Control Center – 2100-AT002 • Arc-Flash Resistant Low Voltage Motor Control Center Designs – 2100-AP003 • Web page • Extranet launch article with FAQs, etc • Internal Training PowerPoint Continue to use the Extranet for Updates • Internal Site (Rockwell Automation) • External Site (Distributors)
New Arc Flash Safety White Paper Available • Advances in Low Voltage Motor Control Center (MCC) Technology Help Reduce Arc-Flash Hazards and Minimize Risk – Examines the causes of arc flash – Discusses the standards guiding arc flash safety – Details the role arc resistant motor control centers play in helping contain arc energy – Highlights the features of an effective arc resistant MCC design • Available at Literature Library – Publication MCC-WP002_-EN-P
T-31 Technical Session Available from Automation Fair • This presentation offers insight into several practical aspects of procuring and applying arc resistant equipment. It is intended to de-mystify the "howto" of implementing arc resistant equipment within typical industrial or commercial facilities. Session discussions include applicable standards highlights including 2009 NFPA-70E, arc flash basics, implementation of arc resistant equipment and an overview of arc resistant equipment. RAIN A-Z>>Automation Fair Customer Site>>Technical Sessions>> Intelligent Motor Control>> T-31: Applying Arc-Resistant Equipment to Meet Arc Flash Standards
(Confidential – For Internal Use Only) Copyright © 2009 Rockwell Automation, Inc. All rights reserved. 45
Competitive Sell Price Required price levels for LV MCCs have never been lower. With fewer field sales resources, it is key that the “right price” be given up front. • We have provided a new pricing authority level to our BU Commercial Engineers which will allow them to get to the desired price in most cases. The more commercial info you give us the better equipped we are to respond to your requests in a timely manner. • Commercial Engineers have been instructed to proactively elevate requests for price levels which are beyond their authority level. • We are leveraging our lower cost manufacturing facilities in Mexico to take orders which previously were out of our reach. Bottom line: We haven’t said “NO” to many price requests in the last 6 months.
Opportunities • WWW – For Water Wastewater business, if you would like us to be ready for a “code red” call on bid day, please send a Lotus Notes invite to Jack Higgins and Shane Cleasby so that it’s on our calendar. Call in advance to discuss possible bid day strategy if appropriate. • OEMs – Repetitive nature is good fit for Customer Specific Program – Leverage CENTERLINE 2500 IEC LV MCC solution with OEMs that ship product globally • Previous customers that you lost to on price
Questions? (Confidential – For Internal Use Only) Copyright © 2009 Rockwell Automation, Inc. All rights reserved. 48
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