LV MCC with Arc Flash Mitigation (AFM) Units

Transcription

1 LV MCC with Arc Flash Mitigation (AFM) Units Technical Tuesday June 30, 2015 Imagination at work.

2 Markets Oil and Gas Petro-Chemical Mining and metals Pulp and paper Mass-production manufacturing Water & Waste Water Pharmaceuticals Suitable for almost any application! 2

3 E9000 with Arc Flash Mitigation (AFM) Units Imagination at work. 3

4 IEEE 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. 4

5 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. 5

6 New Level of Arc Flash Mitigation 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. 6

7 Standards, Guidelines, & Ratings UL 508, UL845, IEEE 1683 & ICS-18 Ratings Main Bus: A Vertical Bus: 300/600/850A NEMA & IP10 rated C2000 contactor Unit Type: Plug-in only Voltage: 480 & 600VAC Short Circuit: 100K 480V and 65K 600V or 100K AIC with Fused Sw 7

8 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 8

9 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 9

10 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 10

11 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

12 Stab assembly Disengaged/Test Position

13 Stab assembly Engaged Position

14 Stab assembly Engaged Position Simple and robust guide structure to assist with proper alignment of the stabs and reliable operation.

15 Racking Mechanism Disengaged Engaged 15

16 Racking Screw Interlock Unit disconnect open Unit disconnect closed 16

17 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 17

18 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 18

19 Automatic Bus Isolation Shutters Shutters Closed Shutters Open 19

20 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 20

21 Padlocking Provisions Padlocking provisions Disconnect handle Stab and Door interlock prevent opening the unit door when stab is energized 21

22 Padlocking Provisions Padlocking provisions Prevent unit insertion Stab and Unit interlock prevent removal of unit or insertion of unit with stab energized 22

23 OPTIONAL IP 20 PROTECTION IP20 CPT Fuse Incidental Contact Barrier 23

24 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 24

25 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. 25

26 Additional Safety Device Options Remote Racking Device Motor to controller cord length = 40 feet Automatic motor shut off at specific toque limit. 26

27 Additional Safety Device Options Remote Racking Device Controller showing ENGAGED condition Controller showing DISENGAGED condition 27

28 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. 28

29 Additional Safety Device Options Voltage Vision Test for absence of voltage 29

30 Additional Safety Device Options Motor Guard Motor insulation tester 30

31 Additional Safety Device Options Infrared Thermal Scanning Available at Main bus and on larger units. 31

32 Retrofit your existing E9000 MCC with new AFM units! Shutter Actuator Shutter Shutter Guide Unit Shelf 32

33 E9000 with Arc Flash Mitigation (AFM) Infrared Thermal Scanning Main 800A Breaker PQMII Metering AFM Units 33

34 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 34

35 Questions