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Appendix D. Time Current Curves

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Содержание Entellisys 4.0

Страница 1: ...GE GE Entellisys Entellisys Entellisys Entellisys 4 0 4 0 Low Voltage Switchgear Low Voltage Switchgear Application Guide Application Guide ...

Страница 2: ...n no os st ti ic cs s 4 47 7 1 10 0 D Di is sc cr re et te e I I O O 5 53 3 1 11 1 C Co on nt tr ro ol l 5 55 5 1 12 2 E En nt te el ll li iG Gu ua ar rd d P Pr re ev ve en nt ta at ti iv ve e M Ma ai in nt te en na an nc ce e 5 59 9 1 13 3 U Us se er r I In nt te er rf fa ac ce e H HM MI I 6 61 1 1 14 4 R Re em mo ot te e C Co om mm mu un ni ic ca at ti io on n 6 67 7 1 15 5 D De es si ig gn n C ...

Страница 3: ...n what is best for the entire system under the exact conditions in the system at that moment Each entire system under the exact conditions in the system at that moment Each trip function is no longer limited to the current information available at its trip function is no longer limited to the current information available at its particular circuit With Entellisys each circuit breaker is controlled...

Страница 4: ...2 Notes ...

Страница 5: ...ed fuses while a separate fuse carriage is required for 2000A through 5000A type breakers Entellisys switchgear houses low voltage power circuit breakers and the Entellisys system compo nents in single or multiple source configurations Entellisys switchgear can be applied either as a power distribution unit or as part of a unit substation Entellisys switchgear is manufactured in GE s ISO 9001 cert...

Страница 6: ...4 Notes ...

Страница 7: ... I O is designed to accept and provide dry contact operations A more detailed discussion of Discrete I O occurs in Section 10 Expansion Capabilities Entellisys switchgear is designed to be easily modified or expanded to handle change in or increased loading Metering functions system wide waveform capture and most protection can be easily changed with software upgrades to the CPUs requiring no addi...

Страница 8: ...10 Notes ...

Страница 9: ...uit breakers and barriers between the front breaker cubicles and the rear bus and cable compartments minimizes the probability of transmission of an arcing fault from one equipment area to another Circuit breakers use monitoring to drive need use based maintenance scheduling versus periodic time based maintenance Self diagnostic features provide notification that a device needs to be evaluated or ...

Страница 10: ...when the breaker is in the DISCONNECT position A feedback mecha is in the DISCONNECT position A feedback mecha nism is provided on the secondary disconnect to nism is provided on the secondary disconnect to confirm to Entellisys that the secondary disconnect confirm to Entellisys that the secondary disconnect is properly engaged Status of the secondary is properly engaged Status of the secondary d...

Страница 11: ...S 08 EGS 08 800 800 3 30 0 3 30 0 3 30 0 E EG GH H 0 08 8 4 42 2 4 42 2 4 42 2 E EG GX X 0 08 8 5 50 0 5 50 0 5 50 0 EGS 16 EGS 16 1600 1600 4 42 2 4 42 2 4 42 2 E EG GH H 1 16 6 6 65 5 6 65 5 6 65 5 E EG GS S 2 20 0 2 20 00 00 0 6 65 5 6 65 5 6 65 5 EGS 32 EGS 32 3200 3200 6 65 5 6 65 5 6 65 5 E EG GH H 3 32 2 8 85 5 8 85 5 8 85 5 E EG GX X 3 32 2 8 85 5 8 85 5 8 85 5 EGS 40 EGS 40 4000 4000 8 85...

Страница 12: ...23 23 Figure 5 3 Figure 5 3 Wiring Diagram Wiring Diagram Section 5 EntelliGuard Breaker Section 5 EntelliGuard Breaker ...

Страница 13: ...raded to 2500A fuses The maximum trip rating for an EGF 16 breaker is 1200A when furnished with other than 2500A fuses see table for min max fuse rating for each rating plug value 2500A fuses preclude the use of shutters in the breaker cubicle Breaker Type Frame Size Sensor Rating Messenger Current Setting Switch Ferraz Shawmut Fuse Range1 EGF 08 800A 150A 400A 800A Below 150A 300 350 400 450 500 ...

Страница 14: ...us of the circuit breaker and the health of the system electronics and they aid in programming the system Locator LED Positioned at the left end of the LED array the blue Locator LED is used for programming the system and breaker control functions When preparing to set any of the breaker protective functions the Locator LED is set to flash for either 10 or 30 seconds and provides visual verificati...

Страница 15: ...having a back up integral trip unit on a circuit breaker that is programmed with all overcurrent characteristics set at their maximum values i Button A factory programmed memory device called the i Button provides the unique protection characteristics for each breaker cubicle in the switchgear line up Characteristics include the breaker frame size the installed current sensor rating and the overcu...

Страница 16: ...ystem reliability lower fault energy let through and lower arc flash energy can all be achieved simultaneously Minimum let through and minimum arc flash energy can be obtained via quick settings when needed most This section describes the protective capabilities provided by Entellisys Further detail is provided by various referenced GE publications that describe specific functions in more detail S...

Страница 17: ...former with the tie closed it may be from one transformer with the tie closed it may be preferable to set the tie at tier 1 and the mains at preferable to set the tie at tier 1 and the mains at tier 0 to achieve tie to main selectivity tier 0 to achieve tie to main selectivity How short time ZSI works How short time ZSI works In the Entellisys ZSI model the highest level main In the Entellisys ZSI...

Страница 18: ...et for the short time function of that main circuit breaker Both of these function of that main circuit breaker Both of these time bands may be as short as 25ms In the case time bands may be as short as 25ms In the case of a through fault in one of the 800A feeders the of a through fault in one of the 800A feeders the bus differential algorithm senses faults as high as bus differential algorithm s...

Страница 19: ...The same calculation is performed by the CPU for all same calculation is performed by the CPU for all three phases simultaneously and adjustments for three phases simultaneously and adjustments for CT errors are performed for each phase and CT CT errors are performed for each phase and CT The total residual current for the three phase system The total residual current for the three phase system is...

Страница 20: ...s phase to phase voltage is used The relay has the following capabilities and characteristics Fixed and inverse time curves Expanded pickup adjustment range from 10 to 95 of nominal in 1 increments which allows the undervoltage relay function to be used for residual voltage detection when assigned to bus potential transformers Delay setting range of 0 5 to 600 seconds in increments of 0 5 seconds ...

Страница 21: ...econds adjustable in increments of 0 5 seconds Pickup accuracy is 0 1 Hz Trip time accuracy is 0 1 seconds May be blocked by enabling the blocking voltage fixed at 5 Blocking voltage accuracy varies with frequency variation from 2 at 0 Hz to 15 at 10 Hz May be disabled by Flex Logic controls The underfrequency relay may be enabled for each circuit breaker and works with the voltage signal assigned...

Страница 22: ...ed PT primary voltage and configuration delta or wye If both parameters are not the same for both sources the CPU logs an event and disables that synch check function The synch check function applies a 3 hysteresis factor to the voltage frequency phase live bus and dead bus thresholds Each synch check function provides the following status information Synchronous Live true if all three phases at b...

Страница 23: ... in the basic and optional levels can be viewed by clicking on the circuit breaker of interest in the one line diagram which displays a screen similar to that shown in Figure 8 2 This screen provides access to all information associated with the selected circuit breaker via the navigation buttons Expanded Metering Expanded Metering is the first level of optional metering features in Entellisys You...

Страница 24: ...he maximum size of the daily log is reached In Overwrite mode the oldest events are overwritten on a FIFO basis if the maximum size of the daily log is reached Thus the newest log information is always available in the log Event Log Size This specifies the maximum size of the daily log Maximum Fault Reports This specifies the max imum number of Fault Reports the HMI retrieves and stores in a given...

Страница 25: ...While the time resolution is displayed to the nearest microsecond the system clock resolution is equal to or better than five µs Data associated with the cursors on the analog waveform chart are displayed below the date and time To the right of the date and time are the slide bar controls for the moveable cursors and the time data for the cursor relative to the start of the WFC event The slide bar...

Страница 26: ...them with the left mouse button It is also possible to group oscillography waveform signals together to view with a common scale Phase waveform magnitudes that are grouped within the same group heading are displayed in relation to each of the other signals in their group The waveform with the largest amplitude is taken as the reference scale and other waveforms will be displayed in their proper ra...

Страница 27: ...ecifying Email Notification for the occurrence of control power events is also available Control power events can be associated with the uninterruptible power supplies that power the Entellisys control power network and may be used to warn of potential control power loss system issues An optional notification service notifies GE Service allowing them to respond with assistance Maintenance and serv...

Страница 28: ...sed to open transitions that occur with no load less than 1 of rated current for each EntelliGuard circuit breaker Total Load Operations Entellisys counts the number of closed to open transitions that occur with load 1 or more of rated current for each EntelliGuard circuit breaker Total Fault Operations Entellisys counts the number of closed to open transitions that occur due to a fault on each En...

Страница 29: ...s When the count equals the threshold value a notification email is sent according to the configuration on the Alarms Setup screen Hours of Operation Entellisys records the date and time that a circuit breaker was initially energized and displays the number of hours that have elapsed since then These hours are a purely calculated value and are as accurate as the current system time The equation us...

Страница 30: ... corner protected by a hinged door provides a fast and easy way to download files via a thumb drive as an alternative to downloading information over a LAN connection Each user is assigned a password by the system administrator the person at the user s facility with Entellisys system responsibility Each password is linked to various permissions so that access to screens and authority is matched to...

Страница 31: ...pen tripped or closed If you want to confirm that you are referencing the correct circuit you can turn on the locator LED for 10 or 30 seconds This causes the blue Locator LED on the corre sponding circuit s Messenger to blink providing visual identification of the circuit breaker you are referencing You can operate the breaker by touching the appropriate button Note that in Figure 13 5 Breaker 2 ...

Страница 32: ...HELP for access to navigational information The clipboard with question mark sends you to a screen that displays the HMI soft ware version The X button closes the application if your login ID gives you that authority The second row of buttons provides additional shortcuts to commonly accessed screens or a quick status indication The One Line button always takes you back to the dynamic one line dia...

Страница 33: ...vents for a particular day with scrolling provided by the arrow buttons on the right side of the screen You can scroll to different days using the arrow buttons at the bottom of the screen You can sort events by touching the column title date and time source etc making it easy to group or find particular events The far right column titled Fault indicates whether fault data and or waveform data are...

Страница 34: ... 14 35 21 3200 4000A 800 1600A 800 2000A 800 2000A 800 2000A 800 1600A 800 2000A 800 2000A 800 2000A UPS S CONTROL POWER TRANSFER MT30 7 30 MT30 19 30 35 MT30 6 F22 1 30 F22 1 B W MAIN TIE 3200 4000A HMI TIE MAIN TIE 3200 4000A 42 CPU S NETWORK SWITCHES DIGITAL I O BUSWAY ABOVE FRONTPOSITION BUSWAY ABOVE FRONTPOSITION B W 92 Upper Bus Lower Bus Mid Center Bus ...

Страница 35: ... TIE 21 21 21 800 2000A 21 21 21 21 21 21 21 21 30 WIDE WITH 4 WIRE BUSWAY BUSWAY CONN MAIN AND TIE 21 22 22 MT22 5 CABLE CONN MAIN OR TIE 22 MT22 6 800 2000A 800 2000A 21 800 2000A MAIN TIE 42 800 1600A MAIN TIE BUSWAYS ABOVE FRONTPOS N BELOW REAR POS N BUSWAYS BELOW FRONT POS N ABOVE REA R POS N 800 2000A 800 2000A B W B W MT22 7 BUSWAY CONN MAIN OR TIE B W BUSWAYS ABOVE FRONTPOS N BELOW REARPOS...

Страница 36: ... TIE MT22 11 800 2000A TIE TIE 800 2000A 22 BUS CONN TIE W SPLIT RISER MT22 13 800 2000A 800 2000A 22 22 CABLE CONN TIE MT22 15 800 2000A 42 800 2000A BUS CONN FEEDER F22 1 800 2000A 800 1600A 800 2000A 800 1600A 800 2000A TIE TIE 800 1600A 21 800 1600A 800 2000A 800 2000A TIE 21 BYPASS FEEDER W CABLE TAP 800 1600A F22 2 800 2000A 800 2000A 800 2000A 22 21 21 21 21 21 21 21 21 22 800 1600A 800 200...

Страница 37: ... CABLE TAP 42 22 800 2000A 21 F22 8 21 21 800 2000A 42 800 1600A 21 21 21 21 BUS CONN FDR W CABLE TAP 22 800 2000A 22 800 2000A F22 10 800 2000A 800 2000A 800 2000A 800 1600A BUSWAY CONN FEEDER BUSWAYS BELOW FRONT POS N ABOVE REARPOS N F22 12 800 2000A 800 2000A BUSWAYS ABOVE FRONTPOS N BELOW REAR POS N 30 WIDE FOR 4 WIRE BUSWAYS BUS CONN FDR W CABLE TAP 22 22 42 F22 11 21 21 800 1600A B W B W 800...

Страница 38: ...108 Notes ...

Страница 39: ...109 Entellisys Low Voltage Switchgear Appendix D Time Current Curves ...

Страница 40: ...110 Appendix D Time Current Curves ...

Страница 41: ...111 Appendix D Time Current Curves ...

Страница 42: ...112 Notes ...

Страница 43: ...Neither the General Electric Company nor any person acting on its behalf assumes any liability with respect to the use of or for damages or injury resulting from the use of any information contained in this application guide GE Consumer Industrial Electrical Distribution Switchgear Equipment 510 East Agency Road West Burlington Iowa 52655 2007 General Electric Company www geelectrical com DET 547 ...

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