Arc Resistant Low Voltage Switchgear with type 2

Arc Resistant Low Voltage Switchgear with type 2 B secondary Compartment © 2014 Eaton. All Rights Reserved. .

Exhaust duct can be on the end of the plenum, towards the back or top. © 2014 Eaton. All Rights Reserved. . 2

Arc Resistant Switchgear - Definitions • The term “Arc Resistant” is somewhat misleading • Arc Resistant Switchgear does not prevent internal arcs from occurring • Arc Resistant Switchgear redirects arc gasses away from operator • Equipment is designed to contain the high pressures and heat present during an arc event • Doors are designed to remain closed and vents are designed to seal off during arc event © 2014 Eaton. All Rights Reserved. . 3

Arc Resistant Switchgear – ANSI Definitions Arc Resistant Types • Type 1 • “Switchgear with arc-resistant designs or features at the freely accessible front of the equipment only” • Type 2 • “Switchgear with arc-resistant designs or features at the freely accessible exterior (front, back, and sides) of the equipment only” Ref Std. C. 37. 20. 7 -2002 © 2014 Eaton. All Rights Reserved. . 4

Arc Resistant Switchgear – ANSI Definitions • Arc Resistant Suffixes • Suffix B • “…designated for equipment where normal operation of the equipment involves opening the door or cover of compartments specifically identified as low-voltage control or instrumentation compartments. ” • Suffix C • “…designated for equipment where isolation from the effects of an internal arcing fault is desired between all adjacent compartments within a switchgear assembly. ” • Suffix D • “…designated for equipment specifically designed for installations where some external surfaces of the equipment are inaccessible and no need exists to use a Type 2 design. ” Ref Std. C. 37. 20. 7 -2002 © 2014 Eaton. All Rights Reserved. . 5

Arc Resistant Switchgear – Arc Test Duration ü IEEE C 37. 20. 7, section 4. 3 gives a “preferred” arcing duration rating of 0. 5 s, but allows a rating as low as 0. 1 s depending on the speed of the main protective device used in the testing. ü Protective relays, schemes, ZSI, and other fast acting mechanisms fail to consider arcing faults on the line side of the main device, so protection is not complete inside the enclosure when arc resistant gear is not used in conjunction with these protective devices. Ref Std. C. 37. 20. 7 -2002 © 2014 Eaton. All Rights Reserved. . 6

Arc Resistant Switchgear – Eaton Offering • Eaton’s Arc. Gard LV Arc Resistant Switchgear is designed as ANSI Type 2 ü ANSI Type 2 B option available ü Which includes 2 B secondary Compartment • Eaton’s Arc. Gard LV Arc Resistant Switchgear has been tested with arcing duration of 0. 5 s for maximum protection. Ref Std. C. 37. 20. 7 -2007 © 2014 Eaton. All Rights Reserved. . 7

Arc Resistant Switchgear – Design Features Key Features: ü Through-the-Door Breaker Design ü Arc Resistance on All 4 Sides (ANSI Type 2) ü Stronger Breaker Door & Latch Mechanism ü Type 2 B secondary Compartment ü 4 -High Breaker Design ü 10 ft Ceiling Height required for Direct Venting with no Plenum ü Plenum Design Available ü Safety Shutters Available ü Hinged Rear Panels Available ü Cable Section Barriers Available ü Vented Cable / Bus Barriers Only © 2014 Eaton. All Rights Reserved. . 8

Arc Resistant Switchgear – Design Features • Patented Breaker Bellows Design – Allows breaker to be racked easily into disconnect position, while keeping arc gasses from escaping around nose of the breaker. • Patented Ventilation System – Allows venting from the breaker cassette to the bus compartment, and ultimately out the top of the switchgear. © 2014 Eaton. All Rights Reserved. . 9

Arc Resistant Switchgear – Design Features • Heavy Duty Door Latches – Two point breaker door latching prevents door opening during arc event, even when originating in breaker cell. • Type 2 B secondary Compartment– Industry Exclusive design Type 2 B Breaker Secondary Terminal compartment © 2014 Eaton. All Rights Reserved. . 10

2 Piece Cell Door and Isolation Chamber Control Wire Access Point Industry Exclusive C 37. 20. 7 Type 2 B Secondary Compartment Adjustable Isolation Chamber Control Wire Access Point will allow Eaton to Seal Around Control Wire Bundle & Stop the Flow of Arc Gases Towards the Operator © 2014 Eaton. All Rights Reserved. . 11

Patented Isolation Chamber The Isolation Chamber is Made of Thermo Plastic Material Which is Designed to Withstand the Pressure During an Arc Event While Preventing an Arc© 2014 Blast from Entering the Secondary Compartment Eaton. All Rights Reserved. . 12

Front Access Arc Resistant • Ratings: • Up to 85 k. A @ 635 VAC • Type 2 & 2 B which includes the type 2 B secondary compartment • Plenum & Direct Venting Available • Clearance @ 10’ Floor-to. Ceiling • 66” Minimum Line-up Width • Layout Rules: • 54” Structure Depth • Standard FA Layout Rules Apply © 2014 Eaton. All Rights Reserved. . 13

100 k. A Arc Resistant (no ZSI) • Ratings: • Up to 100 k. A @ 508 VAC • Type 2 & 2 B • Plenum & Direct Venting Available • Clearance @ 10’ Floor-to. Ceiling • 60” Minimum Line-up Width • Layout Rules: • 30” Wide Structure for Single Wide Breakers • 72” – 90” Structure Depth • Same Layout Rules as 85 k. A Rating © 2014 Eaton. All Rights Reserved. . 14

Arc Resistant Switchgear – Application & Installation Considerations ü What is the k. A & time rating required for the equipment? ü What environment will the switchgear be placed in? (ie. internal switchgear room, IPA in C 1 D 2 area) Is a firewall required at exhaust penetration? ü Is direct venting possible? Or will a plenum and associated arc duct be required? (Note that arc duct comes in std 10”, 20”, 30”, & 40” lengths, with 45 deg & 90 deg elbows available) ü If arc plenum and duct is required, has a safe exhaust location been determined? Also, has the duct layout been established? Is any duct required to be outdoor with N 3 R rating? ü Is close coupling to other equipment (ie. transformers, MCCs) required? Modification of the enclosure is not allowed as it may void arc resistant rating! © 2014 Eaton. All Rights Reserved. . 15

Arc Resistant Switchgear – Standards & Ratings Standards: • UL 1558 / UL 1066 • ANSI C 37. 20. 1, C 37. 13, C 37. 51 Metal Enclosed Switchgear • ANSI C 37. 20. 7 Testing Internal Arcing Faults • CSA C 22. 2 No 31 -04 • Seismic Certified 2006 -IBC Ratings: • Up to 85 k. AIC @ 635 VAC max • Up to 100 k. AIC @ 508 VAC max • Up to 10, 000 A Continuous Current – Horizontal Main Bus • Up to 5, 000 A Continuous Current – Vertical Riser Bus • MDS Breaker Frame Ratings from 800 to 6000 Amps © 2014 Eaton. All Rights Reserved. . 16

Complimentary products • Arcflash Reduction Maintenance System™ (ARMS) • Simple and reliable method to reduce fault clearing time for • MRR 1000 remote racking device • Permits the operator to open and close a breaker from up to 25 feet away during the rack-in or rack-out process • Arc flash studies and hazard analysis by EESS • One of the largest and most experienced arc flash analysis teams in the US © 2014 Eaton. All Rights Reserved. . 17

© 2014 Eaton. All Rights Reserved. . 18