19 – Long Time“C” Circuit Breaker Coordination Curves

Adjustable Selective Instantaneous TripReduced Energy Let Through (RELT)

Instantaneous Trip

44 – Short Time Coordination Curves(2 Bands Below 100 milliseconds)(3 Nested Sloping Bands)

19 – Long Time “F” Fuse Coordination Curves

Latest Generation Trip Units with Expanded Settings

Previous Generation LSI TCC

This is true for ALL 3 options presented

22S-Y/GE – Upgrading LV Dist. Equip

04/092012

http://www.geindustrial.com/cwc/videos-media/?video_uuid=xtq9f63y&v=xtq9f63y&catid=13842

Optional Remote Racking Accessory

23S-Y/GE – Upgrading LV Dist. Equip

04/092012

Addressing Constraints• Tight Electrical Budget

Less Expensive that Total Lineup ReplacementAbility to Multi-Stage the Breaker RetoFILLS over Time

• Space Retains the Present Footprint of the Present Equipment Lineup, even uses the same/existing breaker locations (and cables)

• Downtime IssuesMinimal to no downtime to install (provided no new features are desired)

• Expanded RequirementsSafer racking capability (door closed & remote)Visible door closed trip unit displays a variety of metering parameters and well as details should the breaker tripCommunications capability from the trip unit is available

24S-Y/GE – Upgrading LV Dist. Equip

04/092012

“Upgrade” Products - CAN • Provide Life Extension / Equipment Prolongation

WITHOUT replacing the equipment structure

• Be done in stages to minimize cost impact

• Often be done with minimum downtime

• Provide operational enhancements

25S-Y/GE – Upgrading LV Dist. Equip

04/092012

Switchboard Upgrade Strategies

• Buy Used Insulated Case Circuit Breakers

• Refurbish Existing Insulated Case Circuit Breakers (Typically not a Serviceable Product)

• RetroFIT Existing Legacy (Obsolete) Breaker with a Modern Technology Breaker

Existing Switchboard Intact, but with Aging Main, Tie or Large Frame Feeder Breakers STATIONARY OR FIXED MOUNTED ONLY

Another Option for your Consideration

26S-Y/GE – Upgrading LV Dist. Equip

04/092012

ICCB Retro-FIT Option

27S-Y/GE – Upgrading LV Dist. Equip

04/092012

What is a Retrofit?Replacing a legacy breaker with a modern breaker However, often times the main bus may require modification and/or an adapter. New doors/covers are typically also provided.

Typical installations take 30-90 minutes and requires a total shutdown of the equipment

28S-Y/GE – Upgrading LV Dist. Equip

04/092012

Addressing Concerns

• Questionable Operations (Reliability)Latest Technology, Lower Maintenance, Fast Clearing Breaker

• “Old School” Equipment Powering “New Tech” Devices

Latest Generation Trip Units with Expanded Settings are Incorporated into the Breaker. This provides as many as nine times the TCC settings you may presently have.

• Energized Work Permit EnvironmentTrip Unit and all Breaker Indicators are Visible from the Breaker Front. Maintenance Switch Options is available to reduce the Arc-Flash incident energy level.

29S-Y/GE – Upgrading LV Dist. Equip

04/092012

Addressing Constraints• Tight Electrical Budget

Less Expensive that Total Lineup ReplacementAbility to Multi-Stage the Breaker RetoFITS over Time

• Space Retains the Present Footprint of the Present Equipment Lineup, even uses the same/existing breaker locations (and cables)

• Downtime IssuesMinimal compared to replacement of the lineup. Retrofit replacement can be scheduled with other equipment de-energized procedures

• Expanded RequirementsTrip unit displays a variety of metering parameters and well as details should the breaker tripCommunications capability from the trip unit is available