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AKD-20 AR / Entellisys AR Low-voltage Switchgear

DEH-41473

Section 3. Switchgear Description

Cable Compartment

DANGER: Electrical arc flash hazard. Personal

protection equipment required. Turn off power to the

equipment before working inside.

The rear cable and terminal compartment (Figure 3.26)

provides for cable installation and terminations. The cable

bending space meets the requirements of the National

Electric Code. Various arrangements of single or double cable

terminals are provided, depending upon the purchaser's

requirements.
When specified, racks for the support of feeder cables are

located in the cable compartment. The actual support of the

cables is provided by lashing them to these racks.
Also located in the cable compartment are provisions for

terminating control wires between external devices and

control circuits within the switchgear equipment. Figure 3.27

shows this typical arrangement.
When furnished, the terminal boards (Figure 3.27) for such

connections are located in an enclosed vertical wiring trough

mounted on the side of the cable compartment. The trough is

of steel construction with bolted covers to provide an isolation

barrier between the control wiring and the adjacent power

cables.
A neutral bus, insulated from ground, is provided in the bus

area on switchgear designed for four-wire systems. The

neutral bus is located either near the top or near the bottom

of the cable compartment. It includes provisions for

terminating the neutral conductor of four-wire feeder cables

and also direct mounting of the neutral CT or neutral

Rogowski as required for those feeder system circuit breakers

having a ground fault trip function.

Cable Compartment Floor Plates

Bolted-on steel floor plates (Figure 3.28) are furnished in each

cable compartment.
Figure 3.26 Cable termination provisions

Figure 3.27 Control wiring termination trough

(1)

Internal Equipment Control Wiring

(2)

Terminal Boards

(3)

Space for Purchaser’s Field Control Wiring

Figure 3.28 Cable compartment floor plates

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



Courtesy of NationalSwitchgear.com

Summary of Contents for AKD-20 AR

Page 1: ...GE Industrial Solutions DEH 41473 Installation and Maintenance Manual AKD 20 AR Entellisys AR Low voltage Switchgear Courtesy of NationalSwitchgear com ...

Page 2: ...Courtesy of NationalSwitchgear com ...

Page 3: ...Breaker Compartment Door 15 Future Circuit Breaker Compartment 15 Circuit Breakers 16 Bus Area 17 Busing System 17 Insulated Isolated Bus System 18 Cable Compartment 19 Cable Compartment Floor Plates 19 Ground Bus 20 Heaters 20 Section 4 Equipment Installation 21 General 21 Site Location 21 Foundation Requirements 21 Foundation Preparation 22 Indoor Equipment 22 Assembly and Installation of Switch...

Page 4: ...d Kits 63 Appendix A Torque Values 65 Appendix B Circuit Breaker Rejection Feature 66 General 66 Rejection Feature 66 Appendix C EntelliGuard G Rejection Features AKD 20 AR Only 67 Envelope 1 Rejection Features 67 Envelope 2 Rejection Features 68 Envelope 3 Rejection Features 70 Appendix D EntelliGuard E Rejection Features Entellisys AR Only 72 Envelope 1 Rejection Features 72 Envelope 2 Rejection...

Page 5: ...ument is based on information available at the time of its publication While efforts have been made to ensure accuracy the information contained herein does not cover all details or variations in hardware and software nor does it provide for every possible contingency in connection with installation operation and maintenance Features may be described herein that are not present in all hardware and...

Page 6: ...location within this manual and any applicable drawing number Any material external to the equipment which may be required to meet local codes such as mats screens railings etc is not furnished by the General Electric Company If there are any questions or requirements not covered in this manual or in the accompanying drawings please contact the local sales office of the General Electric Company In...

Page 7: ...eaker rejection features circuit breaker information exhaust plenum system component details and a open space for taking notes Related Publications Addendum s to this instruction manual are the available service and maintenance publications supplied separately for circuit breakers relays and other devices not described in this instruction manual In addition to instruction manuals the following dra...

Page 8: ...ifting devices and dollies used with indoor equipment will always be shipped in separate crates or cartons Figure 2 2 and Figure 2 3 Inspecting for Damage All equipment leaving the factory is carefully inspected and packed by personnel experienced in the proper handling and packing of electrical equipment Upon receipt of any equipment immediately perform a visual inspection to ascertain if any dam...

Page 9: ...ting capacity of 10 000 pounds WARNING The angle between the cables and the top of the equipment must be at least 45 degrees If this is not possible because of lack of headspace spreader bars must be used Also lift cables with greater load capability may be necessary depending upon the angle between the cables and the crane hook Connect a cable from the crane to the four lifting plates located on ...

Page 10: ...rs under the skids spacing them evenly across the width of the lineup Figure 2 7 5 Carefully lower the gear until it rests on the roller Figure 2 6 6 While carefully pushing the switchgear to its final site position the rollers that are freed from the rear of the switchgear are then repositioned at the forward end This procedure should be continued until the switchgear is in its final location Fig...

Page 11: ...move any plastic or polyethylene shrouding from the switchgear sections before energizing any internal heaters CAUTION If the space heaters are to be temporarily energized from an external source it is important to remove the fuses on the secondary side of the control power transformer This precaution is to prevent a feedback of higher voltage to other portions of the equipment through the control...

Page 12: ...chgear It also describes the functions of the electrical and mechanical systems Figure 3 1 is a side view of a typical section showing compartmentation Compartmentation is identical for Entellisys AR equipment with the exception that an Entellisys Messenger is provided in lieu of an Instrument Panel for each breaker compartment Figure 3 1 Side view section of AKD 20 AR low voltage switchgear EXTER...

Page 13: ...tchgear is 10 feet from the base of the assembly The breaker compartments include draw out rails stationary breaker contacts interlocks and necessary control and indicating devices The breakers are provided with self aligning primary and secondary disconnecting contacts breaker locking mechanism and integral trip unit The individual sections compartments and devices are described in the following ...

Page 14: ... 3 3 Outline of typical arc resistant low voltage switchgear side view 1 Front Compartments Breaker Compartments 2 Bus and Cable Compartment 3 Plenum Flange 4 Exhaust Plenum System Table 3 1 Arc resistant low voltage switchgear assembly depths Dimension Depth inches C 24 74 30 74 37 74 44 74 D 54 60 67 74 Courtesy of NationalSwitchgear com ...

Page 15: ...operated EntelliGuard E circuit breakers are located on the lower left panel of the circuit breaker escutcheon cover Figure 3 5 Control fuses for the SET and RESET coils of the optional Network Interlock accessory are located similarly EntelliGuard Messenger Entellisys AR Only An EntelliGuard Messenger is located above each breaker compartment Figure 3 6 The Messenger provides an interface between...

Page 16: ...ing Incoming cable when a main breaker section is not provided Mounting and wiring of additional metering relaying and control devices requiring more space than available in a standard instrument panel or instrumentation compartment transition or auxiliary Mounting and wiring of purchaser specified and or furnished devices Auxiliary sections may be 22 inch 30 inch or 38 inch wide as required to ac...

Page 17: ...e breaker compartment fascia Figure 3 12 If the application does not require a key interlock s metallic key interlock plug s GE GM2KIP are provided WARNING The EntelliGuard racking handle must be returned to its compartment to maintain the integrity of the arc resistant enclosure WARNING Either the key interlock s or the metallic key interlock plug must be installed to maintain the integrity of th...

Page 18: ... mounted on the cassette An optional remote racking device is also available Movement to the WITHDRAWN position is manually performed after opening the compartment door These positions are illustrated and described more fully in SECTION 6 of this manual All EntelliGuard circuit breakers are provided with a factory installed mechanical rejection feature See SECTION 6 of this manual for additional d...

Page 19: ... insulating material The shutters movable barriers prevent frontal access to the primary disconnect line and load stationary disconnects The shutters are closed when the breaker is in the DISCONNECTED Position As the circuit breaker is racked from the DISCONNECTED Position to the TEST Position the shutters remain fully closed As the breaker is racked from the TEST Position to the CONNECTED Positio...

Page 20: ...to maintain the integrity of the arc resistant enclosure The breaker compartment door should not be opened when the circuit breaker is closed and in the connected position when the equipment is energized WARNING When a circuit breaker is removed from its compartment The future cassette barrier and the future breaker door cover must be installed and the circuit breaker compartment door closed and l...

Page 21: ...to 100kAIC interrupting rating Available in 22 inch wide sections Envelope 3 EntelliGuard Circuit Breakers 5 000 ampere frame size Up to 200kAIC interrupting rating Available in 38 inch wide sections Figure 3 19 EntelliGuard E circuit breaker Figure 3 20 EntelliGuard G circuit breaker Table 3 3 ANSI UL 1066 Low voltage power circuit breaker interruption ratings Interruption Rating Tier ICU Circuit...

Page 22: ...0 amperes RMS symmetrical is available as an option In general when the switchgear equipment has no more than four sections or does not exceed 10 feet in length it will be shipped as one complete lineup In such cases the only field assembly would be to a close coupled transformer if the switchgear were part of a Load Center Unit Substation If because of shipping and or handling considerations the ...

Page 23: ... caps Joint Cap held in place with nylon thumb screws The collars and caps are constructed from insulating material A vertical section barrier Figure 3 25 between adjacent sections of equipment is always furnished The section barrier provides a separating barrier system between adjacent bus and cable compartments while allowing the horizontal main bus to progress through adjacent sections Figure 3...

Page 24: ...arrangement When furnished the terminal boards Figure 3 27 for such connections are located in an enclosed vertical wiring trough mounted on the side of the cable compartment The trough is of steel construction with bolted covers to provide an isolation barrier between the control wiring and the adjacent power cables A neutral bus insulated from ground is provided in the bus area on switchgear des...

Page 25: ...re provided as an option for indoor equipment They provide protection against condensation of moisture that could in combination with air borne contaminants deteriorate insulation or cause corrosion One 1000 watt 240 volt operating at 120V 250 watts ac heater is located on the floor of the bus compartment of each switchgear section The heaters should be energized at all times to prevent condensati...

Page 26: ...rocurement of equipment phases Indoor locations within buildings impose certain requirements which must be met so that the switchgear may operate efficiently with a minimum of maintenance In locating the switchgear adequate aisle space must be provided at the front and rear of the equipment to ensure proper ventilation of the equipment and to allow service and maintenance of the equipment with the...

Page 27: ...should be reviewed and approved by the customer and or their authorized representative When the equipment is subject to impact shock due to operating conditions or environmental seismic earthquake conditions alternate anchoring methods must be approved by the customer s certified structural engineer As an option the General Electric switchgear assembly can be provided as certified for seismic appl...

Page 28: ... AR Entellisys AR Low voltage Switchgear DEH 41473 Section 4 Equipment Installation 23 2016 General Electric All rights reserved Figure 4 2 Indoor enclosure anchor locations Courtesy of NationalSwitchgear com ...

Page 29: ...t ground bus If greater than 6 ground lugs are required in the same section an offset ground bus is provided When the offset ground bus and cable entry is located both bottom or above it will reduce the available cable space Note 2 Neutral Bus Optional AKD 20 AR Only When this option is provided and the neutral bus and cable entry is located both bottom or top it will reduce the available cable sp...

Page 30: ... must be absolutely level and clear of debris to prevent damage and possible misoperation of the switchgear equipment Detailed Assembly and Installation Instructions Indoor Equipment The recommended procedure for installation of an indoor switchgear or Load Center Unit Substation is as follows Position the Equipment Position the equipment or sections of the complete equipment in their final locati...

Page 31: ...n each section of the switchgear equipment to the adjacent section Figure 4 6 shows the location of the through bolts Figure 4 7 illustrates the installation of the through bolts The through bolts are in the front and rear compartments The nut and bolt assembly should be tightened with a torque of 25 30 ft lbs All of the hardware required for assembling the equipment across the shipping splits is ...

Page 32: ...ot included for terminating the purchaser s cable connection to ground The specific location of the station ground connection is shown on the site floor plan drawing and in the electrical drawings supplied with the equipment All grounding of the switchgear should be in accordance with National Electrical Code Figure 4 9 illustrates the installation of the ground bus splice plate across a shipping ...

Page 33: ...ars is with bolted joints Figure 4 11 and Figure 4 12 illustrate the assembly of the main bus splice plates on the bolted bus system Copper bus systems are normally supplied with flat washers and lock washers Figure 4 11 shows the rear view of the main bus area with the installed splice plates indicated with cross hatching Figure 4 12 shows that a spacer is used both between the bus bars when more...

Page 34: ...er for welding the equipment to the channel sills Anchoring by Weld Front Lag Sill The front of the equipment is attached to the embedded channel sills Figure 4 14 by two 3 16 inch fillet welds It is recommended that two welds each 2 1 2 inches long min be used for each section to firmly tie the bottom width post to the channel sill Anchoring by Weld Rear Lag Sill The rear of the equipment may be ...

Page 35: ...o two control wire termination troughs Figure 3 27 Figure 4 3 depicts a typical location for the cable entry of these control cables Connect the control wires to the switchgear section as follows 1 When control conduits enter the switchgear from below they should not extend more than one inch above the floor The control wires may be pulled through the conduits before or after the switchgear is ins...

Page 36: ...ew and possible damage to the terminal or cable This should result in the oozing of compound material from between individual strands Wipe off any excess compound Bolt the cable terminal connectors to the ends of the bars in the cable compartment A non oxidizing grease such as GE lubricating grease D6A15A2 furnished with each equipment should be used at these connection surfaces The bolts should b...

Page 37: ... the switchgear equipment it is necessary to remove the runner guide from the breaker lifting device carriage as shown in Figure 4 18 Do not dispose of this guide and mounting hardware NOTICE Be sure to retain the breaker lifting guide and mounting hardware for reinstallation after mounting the breaker lifting device on the equipment The breaker lifting device can be lifted into position on top of...

Page 38: ...tached to each respective part NOTICE Prior to installing the front rail splice plate s and rear runner splice plate s the switchgear must be assembled and achored to its foundation Failure to follow this sequence may result in a misalignment of the breaker lifting device components On each shipping split section remove the bolt holding the front rail shipping splice plate in place Retain the fron...

Page 39: ...ctions and on top of the rear runner Align the four mounting holes and install the four screws that were previously retained After the splice plates have been installed run the breaker lifting device over the assembled shipping splits to check the alignment of the front rail and rear runner If necessary adjust the front rail and or rear runner for smooth operation of the rollers on the breaker lif...

Page 40: ...r ventilation of the equipment during normal operation Each ventilation flap can be freed by cutting the retaining wire holding the system in the closed position The notice placard and shipping wire can be discarded after removal NOTICE Ensure the vent covers are operating freely prior to the energizing the equipment Failure to do so will prohibit proper ventilation of the equipment during normal ...

Page 41: ... flat washers and if the bolts are not self threading lock washers and nuts To ensure proper sealing and enclosure protection rating use the provided sealing washers Installing the sealing washers inside the enclosure with the tapered cone against the enclosure and then add the flat washers as shown in Figure 4 28 and Figure 4 29 4 Attach suitable conduit fittings to the holes from step 1 Run the ...

Page 42: ...ween the transition adapter and the end exhaust portal Figure 5 1 may or may not be provided be the General Electric Company Adherence to the design requirements in this manual is required when constructing this area of the exhaust plenum system WARNING The exhaust plenum system is an integral component of the arc resistant rating of the equipment Energizing and operating the equipment without a p...

Page 43: ...sure to retain the hardware and the access cover for re installation later in this instruction manual 3 Remove and discard the temporary cover that is attached to the top of the plenum flange at the top of the switchgear section Figure 5 5 Be sure to retain the mounting hardware for in step 4 4 Raise the exhaust plenum section to the top of the switchgear and align the opening and hole pattern in ...

Page 44: ...the switchgear The left and right side transition adapters can be installed at each end of the plenum system Using the 3 8 16 x 1 inch carriage bolts lock washers and hex nuts provided attach the upper two corners of the transition adapters to the plenum flange and torque to 25 30 ft lbs Figure 5 6 10 Using the 12 24 x 7 8 inch self thread forming screws Figure 5 8 complete attaching the transitio...

Page 45: ...nt water ingress between the exhaust end portal and the structure wall Care and consideration should be taken when selecting the exhaust end portal location An area of at least 10 feet in all directions from the exhaust end portal needs to be clear of obstruction and access to this area should be restricted to ensure the safety of personnel Recommended attachment means are identical to those shown...

Page 46: ...enum interior volume measure no less than 12 inches by 20 inches The exhaust plenum should be constructed of a corrosion resistant metal with a material thickness of no less than 23 gauge Attaching the exhaust plenum should adhere to the details shown in Figure 5 10 Total length of the plenum has no restriction Elevation changes and turns of no greater than 90 degrees are acceptable but should be ...

Page 47: ... Only or using the 10 digit catalog number Entellisys AR Only 3 To locate the breaker in the proper compartment refer to the breaker location list on the front view drawing Find the proper breaker by the identification card on the breaker carton All identical breakers will have the same mark and catalog number Rejection Feature Draw out breakers of the same type and ratings are interchangeable in ...

Page 48: ...ting beam Table 6 1 to the circuit breaker and breaker lifting device as shown in Figure 6 3 The carabineers of the lifting beam should be securely closed on the circuit breaker lifting tabs 4 Using the switchgear breaker lifting device or a suitable lifting mechanism and the appropriate lifting beam raise the breaker above the elevation of the breaker compartment rails 5 Fully withdraw the rails ...

Page 49: ...ed position when the equipment is energized 10 Engage the racking handle Figure 6 7 by using a slot screwdriver to open the racking shaft door by rotating it clockwise then insert hex manual racking handle 11 Rotate the handle clockwise as far as it will go As you rotate the handle clockwise the breaker will travel from the DISCONNECTED through the TEST position you will notice an audible click an...

Page 50: ...ss to live conductor parts and maintain the integrity of the arc resistant enclosure WARNING The breaker compartment door must be closed and latched to maintain the integrity of the arc resistant enclosure The breaker compartment door should not be opened when the circuit breaker is closed and in the connected position when the equipment is energized 10 Return the racking handle to the right most ...

Page 51: ...00 volts See Table 7 1 Potential and control power transformers must be disconnected during high voltage testing Table 7 1 High potential test values Switchgear Voltage Rating ANSI Test Voltage ac RMS Field Test Voltage ac RMS 600 V ac 2 200 V 1 650 V 480 V ac 1 960 V 1 470 V 240 V ac 1 480 V 1 110 V Key Interlocks After initial installation of the switchgear equipment all necessary interlock keys...

Page 52: ...ctrical operators a Entellisys AR Only Using the Entellisys HMI exercise all EntelliGuard circuit breakers to determine all devices are functioning correctly For Entellisys HMI instructions reference DEH 501 5 Test the ground fault protection system if furnished in accordance with the manufacturer s instructions a Entellisys AR Only Test all protective functions using the Entellisys Test Kit ETSTE...

Page 53: ...ated operating instructions for EntelliGuard circuit breakers Before activation of the circuit breakers or operation of the switchgear equipment thoroughly read and be familiar with the circuit breaker manuals which will be supplied as supplementary information to this manual Publication number is DEH 41304 AKD 20 AR Only or DEH 41526 Entellisys AR Only Manually Operated Circuit Breakers Closing O...

Page 54: ...e closed and latched to maintain the integrity of the arc resistant enclosure The breaker compartment door should not be opened when the circuit breaker is closed and in the connected position when the equipment is energized Draw out Operation All breakers are supported on the draw out rails mounted on the side walls of the cassette On EntelliGuard breakers two wheels on each side of the breaker r...

Page 55: ... for a type 2B class rating The type 2B classification allows the auxiliary door unless otherwise marked to be opened without impacting the arc resistant rating of the enclosure WARNING The breaker compartment door must be closed and latched to maintain the integrity of the arc resistant enclosure The breaker compartment door should not be opened when the circuit breaker is closed and in the conne...

Page 56: ...gure 8 9 3 Loosen and remove the four 20 x 5 8 inch self thread forming screws holding the door hinge to the compartment dead front CAUTION Prepare to support the weight of the front access door prior to removing the last of the four mounting screws 4 The door is now free to remove Front Door Installation To install the switchgear front access door proceed as follows 1 With the door in the open po...

Page 57: ...complete and ready to use from the factory These breaker compartments have a steel panel future door cover to cover the door cutout Figure 8 10 and a steel panel future cassette barrier to cover the cassette opening Figure 8 11 To remove the future cassette barrier and future door cover proceed as follows 1 Open the breaker door by rotating the handle clock wise 2 Remove the four inch hex nuts att...

Page 58: ...the breaker The typical interlock system is designed so that the key may be removed from the lock only when the breaker is tripped The key actuates a cam that elevates the trip bar on the cassette and the breaker is rendered trip free The operation of the key interlock should be checked as follows 1 With the breaker in the CONNECTED position manually trip the breaker This then allows the key inter...

Page 59: ...rcuit breaker is removed from its compartment The future cassette barrier and the future breaker door cover must be installed and the circuit breaker compartment door closed and latched to maintain the integrity of the arc resistant enclosure The circuit breaker compartment door must be opened to put the padlock on however there is no interference with the door after the padlock has been placed in...

Page 60: ...E Variations of the fan control circuit may be provided Operators should review and understand the shop order drawings and documents provided with the equipment from the factory to confirm final fan control circuitry Table 8 1 provides the current threshold values that the circuit breaker trip unit s Current Alarm 2 function AKD 20 AR should be programmed to initiate the fan cooling system Refer t...

Page 61: ... voltage Switchgear Section 8 Operating the Switchgear 2016 General Electric All rights reserved 56 Figure 8 18 AKD 20 AR cooling fan control circuit Figure 8 19 Entellisys AR cooling fan control circuit Courtesy of NationalSwitchgear com ...

Page 62: ...en Fan Relay On Indicating Light and each red Fan On Indicating Light will be illuminated If the current drop below the values shown in Table 8 1 for 60 seconds the amber Current Alarm Indicating Light the green Fan Relay On Indicating Light and each red Fan On Indicating Light will be off TEST Operating Mode With the Illuminated Fan Control Switch held in the TEST position an operator can perform...

Page 63: ...tant enclosure The rear access doors on all AR switchgear are full height hinged doors Figure 8 20 Each door is provided with a six 3 8 16 bolts to secure the door in the closed position Two of these bolts are located on the hinge side of the door Optional non locking key lock able and padlock able door handles and 3 point latching are available IR viewing windows are also available With any combi...

Page 64: ...compartments Breaker compartment door s must be closed and latched Breaker compartment s without a circuit breaker s must have a future door cover s and future cassette barrier s installed Exhaust plenum system must be properly installed Rear compartment door s must be closed and bolted IR window cover s must be closed and secured Energizing Procedures DANGER Electrical arc flash hazard Personal p...

Page 65: ...l protection equipment required Turn off power to the equipment before working inside WARNING Primary equipment must be completely de energized while tests on control circuits etc are being conducted Be sure that all areas of feedback from secondary circuits as well as outside power sources are disconnected Periodic inspection of the circuit breaker is recommended at least once a year More frequen...

Page 66: ...t breakers the contact surface of the disconnect fingers should be cleaned and greased with GE lubricant D6A15A2 NOTICE All excess lubricant should be removed with a clean cloth to avoid accumulation of dirt or dust Instruments Instrument Transformers and Relays DANGER Electrical arc flash hazard Personal protection equipment required Turn off power to the equipment before working inside WARNING D...

Page 67: ...s no special maintenance procedures or lubrication is required for this device If the cable is abraded under any condition it should be inspected for broken strands or other damage and replaced if necessary Overall Switchgear Make the following checks on the complete switchgear equipment Clean and inspect all painted surfaces and retouch where necessary Check to see that all anchor bolts and other...

Page 68: ...g Handle Telescoping for Cassette OEM Style GRHN Shutter Kit Envelope 1 3 Pole GM2F120H2SSL Shutter Kit Envelope 2 2 000A or below 3 Pole GM2F220H2SSL Shutter Kit Envelope 2 Above 2 000A 3 Pole GM2F232M2SSL Shutter Kit Envelope 3 3 Pole GM2F350M2SSL Table 11 2 Switchgear accessories and kits Description Catalog Number Circuit Breaker Lifting Cart Beech Eng B 1000 GE 1000 Circuit Breaker Test Cabin...

Page 69: ...aust Plenum Section T Section 30 Wide GM2AR30EPTS Exhaust Plenum Section T Section 38 Wide GM2AR38EPTS Exhaust Plenum Section V Section 30 Wide GM2AR30EPVS Exhaust Plenum Section V Section 38 Wide GM2AR38EPVS Exhaust Plenum Access Cover GM2ARAC Exhaust Plenum End Cap GM2AREC Exhaust Plenum Exhaust End Portal GM2AREP Exhaust Plenum Exhaust End Portal w Moisture Absorbent Foam GM2AREPMAF Exhaust Ple...

Page 70: ...ical spring washer or lock washer NOTICE When installing parts or components to the compartment molded base torque inch screws slowly and do not exceed nine ft lbs Table A 2 Torque values for cable terminals Wire Size Torque 1 2 in lbs 6 100 5 4 3 3 125 2 1 0 150 00 000 200 0000 200 000 250 000 250 300 000 350 000 400 000 500 000 300 600 000 700 000 750 000 800 000 400 900 000 1 000 000 1 250 000 ...

Page 71: ...reaker and its cassette The rejection is accomplished by pins on the sides of the breaker and the blocks on the sides of the cassette Rejection Feature This factory installed pin and gate device prevents the insertion of a circuit breaker into a cassette if the nominal rating of the breaker is incompatible with that of the cassette and its ancillary equipment The information in the following appen...

Page 72: ... 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 H Tier 85kA ANSI GE Breaker ANSI GE Breaker ANSI GE Breaker Left Right Left Right Left Right Block ACB Block Block ACB Block Block ACB Block 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 N Tier 65kA SQ ANSI GE Breaker ANSI GE Breaker ANSI GE Breaker Left Right Left Right Left Right Block ACB Bl...

Page 73: ...uster circuit breaker logic 800A 1 600A 2 000A M Tier 100kA ANSI GE Breaker ANSI GE Breaker ANSI GE Breaker Left Right Left Right Left Right Block ACB Block Block ACB Block Block ACB Block 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 E Tier 85kA SQ ANSI GE Breaker ANSI GE Breaker ANSI GE Breaker Left Right Left Right Left R...

Page 74: ...aker ANSI GE Breaker Left Right Left Right Left Right Left Right Block ACB Block Block ACB Block Block ACB Block Block ACB Block 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 N Tier 65kA SQ ANSI GE Breaker Left Right Block ACB Block 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5 5 Table C 6 Ent...

Page 75: ...ght Block ACB Block Block ACB Block Block ACB Block 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 B Tier 100kA SQ ANSI GE Breaker ANSI GE Breaker ANSI GE Breaker Left Right Left Right Left Right Block ACB Block Block ACB Block Block ACB Block 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4...

Page 76: ...EntelliGuard G envelope 3 non automatic switch logic 3 200A 4 000A 5 000A 6 000A M Tier 65kA ANSI GE Switch ANSI GE Switch ANSI GE Switch Left Right Left Right Left Right Block ACB Block Block ACB Block Block ACB Block 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 Courtesy of NationalSwitchgear com ...

Page 77: ...4 4 5 5 5 5 5 5 5 5 5 5 5 5 H Tier 85kA ANSI GE Entellisys ANSI GE Entellisys ANSI GE Entellisys Left Right Left Right Left Right Block ACB Block Block ACB Block Block ACB Block 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 N Tier 65kA SQ ANSI GE Entellisys ANSI GE Entellisys ANSI GE Entellisys Left Right Left Right Left Rig...

Page 78: ...k ACB Block 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 E Tier 85kA SQ ANSI GE Entellisys ANSI GE Entellisys ANSI GE Entellisys ANSI GE Entellisys Left Right Left Right Left Right Left Right Block ACB Block Block ACB Block Block ACB Block Block ACB Block 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

Page 79: ...ight Block ACB Block Block ACB Block Block ACB Block 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 B Tier 100kA SQ ANSI GE Entellisys ANSI GE Entellisys ANSI GE Entellisys Left Right Left Right Left Right Block ACB Block Block ACB Block Block ACB Block 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4...

Page 80: ...eserved Appendix E Circuit Breaker Information For all circuit breaker information including ratings weights accessories etc reference DEH 41304 AKD 20 AR Only or DEH 41526 Entellisys AR Only at www industrial com In Publication Library select publication number type in this DEH number and click Go Courtesy of NationalSwitchgear com ...

Page 81: ...lenum will require routing the exhaust plenum system over the top rear section of the equipment stack which will limit the entrance of power cables and or busway from above An optional V Section exhaust plenum Figure F 3 may be provided per the customer s requirements The vertical facing flange of the exhaust plenum v section is provided with four external flanges The V Section exhaust plenum is n...

Page 82: ...e exhaust plenum vertical elbow is provided with four external flanges on each side and enables the exhaust plenum to be directed in a vertical orientation An optional exhaust plenum 90 degree horizontal elbow Figure F 9 may be provided per the customer requirements The exhaust plenum horizontal elbow is provided with four external flanges on each side and enables the exhaust plenum to be directed...

Page 83: ...lenum section widths inches Stack Width Dimension A Dimension B Qty of C Holes 22 22 20 18 30 30 28 22 38 38 36 26 NOTICE Use of optional flange clips Figure F 10 may be used in lieu of the 12 24 x 7 8 inch hardware Two flange clips may be installed on each long exterior flange and one flange clip may be installed on each short exterior flange Use of the optional flange clips will still require th...

Page 84: ... section widths inches Stack Width Dimension A Dimension B Qty of C Holes Dimension D 22 22 20 18 5 30 30 28 22 9 38 38 36 26 13 NOTICE Use of optional flange clips Figure F 10 may be used in lieu of the 12 24 x 7 8 inch hardware Two flange clips may be installed on each long exterior flange and one flange clip may be installed on each short exterior flange Use of the optional flange clips will st...

Page 85: ...enum v section widths inches Stack Width Dimension A Dimension B Qty of C Holes Dimension E 30 30 28 22 5 38 38 36 26 9 NOTICE Use of optional flange clips Figure F 10 may be used in lieu of the 12 24 x 7 8 inch hardware Two flange clips may be installed on each long exterior flange and one flange clip may be installed on each short exterior flange Use of the optional flange clips will still requi...

Page 86: ... equipment assembly Figure F 14 Figure F 14 Exhaust plenum transition adapter details NOTICE Use of optional flange clips Figure F 10 may be used in lieu of the 12 24 x 7 8 inch hardware Two flange clips may be installed on each long exterior flange and one flange clip may be installed on each short exterior flange Use of the optional flange clips will still require the installation of the 3 8 16 ...

Page 87: ...cap must be installed on the exhaust plenum transition adapter Figure F 14 Figure F 15 Exhaust plenum end cap details NOTICE Use of optional flange clips Figure F 10 may be used in lieu of the 12 24 x 7 8 inch hardware Two flange clips may be installed on each long exterior flange and one flange clip may be installed on each short exterior flange Use of the optional flange clips will still require...

Page 88: ...ure F 16 Figure F 16 Exhaust plenum end portal details NOTICE Use of optional flange clips Figure F 10 may be used in lieu of the 12 24 x 7 8 inch hardware Two flange clips may be installed on each long exterior flange and one flange clip may be installed on each short exterior flange Use of the optional flange clips will still require the installation of the 3 8 16 x 1 inch carriage bolts at each...

Page 89: ...plenum access cover is provided on each exhaust plenum above the switchgear assembly to ease with the installation of the exhaust plenum system Figure F 17 Figure F 17 Exhaust plenum access cover details CAUTION Over tightening of the access cover mounting screws could damage the exhaust plenum itself Care should be taken while performing this task Courtesy of NationalSwitchgear com ...

Page 90: ...gure F 18 The exhaust plenum extension is provided in 36 inch lengths Figure F 18 Exhaust plenum extension details NOTICE Use of optional flange clips Figure F 10 may be used in lieu of the 12 24 x 7 8 inch hardware Two flange clips may be installed on each long exterior flange and one flange clip may be installed on each short exterior flange Use of the optional flange clips will still require th...

Page 91: ...xhaust plenum vertical elbow can be oriented in either an upward or downward orientation Figure F 19 Exhaust plenum 90 degree vertical elbow details NOTICE Use of optional flange clips Figure F 10 may be used in lieu of the 12 24 x 7 8 inch hardware Two flange clips may be installed on each long exterior flange and one flange clip may be installed on each short exterior flange Use of the optional ...

Page 92: ...e exhaust plenum horizontal elbow can be oriented in either a left or right orientation Figure F 20 Exhaust plenum 90 degree horizontal elbow details NOTICE Use of optional flange clips Figure F 10 may be used in lieu of the 12 24 x 7 8 inch hardware Two flange clips may be installed on each long exterior flange and one flange clip may be installed on each short exterior flange Use of the optional...

Page 93: ...st plenum components to adjacent exterior flanges Figure F 21 The exhaust plenum flange may be used in lieu of the 12 24 x 7 8 inch hardware Two flange clips shall be used on each long axis exterior flange and one flange clip shall be used on each short axis exterior flange Use of the optional flange clips will still require the installation of the 3 8 16 x 1 inch carriage bolts at each exterior f...

Page 96: ...S A TRADEMARK OF THE GENERAL ELECTRIC COMPANY AND OR ITS SUBSIDIARIES INFORMATION PROVIDED IS SUBJECT TO CHANGE WITHOUT NOTICE PLEASE VERIFY ALL DETAILS WITH GE ALL VALUES ARE DESIGN OR TYPICAL WHEN MEASURED UNDER LABORATORY CONDITIONS AND GE MAKES NO WARRANTY OR GUARANTEE EXPRESS OR IMPLIED THAT SUCH PERFORMANCE WILL BE OBTAINED UNDER END USE CONDITIONS Courtesy of NationalSwitchgear com ...

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GE AKD-20 AR, Installation And Maintenance Manual

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Summary of Contents for AKD-20 AR

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