GE AKD-6 User Manual Download

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Summary of Contents for AKD-6

Page 1: ...GENERA L ELECTRTC GEK 72r01 8 77 INSTRUCTIONS TYPE AKD 5 tOW VOLTAGE SWITCHGEAR l ilH il il q M ...

Page 2: ...ACKOUT MECHANISM PADLOCK DEVICES MAINTENANCE Breaker and Instrument Compartrnents Bus Compartment Feeder Cable and Busway Compartment Overall Switchgear Paint Refinishing RECEIVING HANDLING AND STORAGE RECEIVING Every package leaving the factory is plainly marked with case number requisition number and customer s order number If the equipment has been split for shipment the unit numbers of the equ...

Page 3: ...rge items such as hoist dollies and hoist carriages used with indoor equipment will always be shipped in separate crates or cartons To avoid the loss of small parts when unpacking the contents of each case should be carefully checked against the packing list before discarding the packing material JACK HEAE E U 6 a NOI FUFNISHED l wrrH EoUTPMEN rrE ABLE 1 t 6 U o tt v stoE vtEw RECOMMENDED METHOD O...

Page 4: ...or FRONT VIEW RECOMMENDED JACKING TIMBER NOT FURNISHED VJITH SWGF ll 1 I lffill v_L_ PARTIAL FRONT OR REAR VIEW FON JACKING RECOMMENDED METHOD OF JACKING bolt holes used for final installation The bolts in the rear of the equipment may be reached by opening the rear doors To reach the bolts in the front the inner housing in the bottom breaker compartment must be brought out to the disconnected pos...

Page 5: ...5 Locotion of skid bolts ond onchor bohs in front of lndoor Equipment move the shipping members at this time If it is necessary to store the equipment for any length of time the following precautions should be taken to pre vent corrosion or deterioration 1 IJncrate the equipment Check thoroughly for damage 2 Store in a clean dry rodent free location with moderate temperature and provide protective...

Page 6: ...f coupling primary and secondary disconnecting contacts and incorporate positive and indirect interlocks to insure proper operating sequence Each of the individual units compartments and devices is described in the following paragraphs LOW VOLTAGE SECTION ol5 FRONT ENCLOSURE The front enclosure of each unit is divided into in dividual compartments These compartments either house a power circuit br...

Page 7: ...s set on the tracks All AK or AKR circuit breakers of the same type and SECONDARY DISCONNECTS KEY INTERLOCK TRACK LOCK LINK ROLLOUT OPERA SHAFT INDICATOR CURRENT TRANSFORMER rating which have duplicate wiring may be interchanged Each breaker compartment has four positions They are illustrated in Figure 18 and described below 1 CONNECIED POSIIION The breaker is in operating position both primary an...

Page 8: ...ion by an optional isolation barrier For main breakers the upper section contains the incoming line bus fed from the bus connections in the auxiliary unit while the lower section contains the main bus which connects with the other units Optional barriers at tie breakers isolate the two main bus sections from each other Aluminum buses run continuouslv from one unit to another At shipping splits or ...

Page 9: ...utral bus is insulated from ground GROUND BUS CAUTION IT IS VERY IMPORTANT THAT ESUIPMENT BE ADEQUATELY GROUNDED FOR SAFETY FlG 9 042651 Typicol Terminql Arrongement in o 4 high unir The ground bus is bolted to the rear of the cable com partment near the bottom A 4 0 connector is included on each equipment for making the connection to the station ground A recommended location for this connection i...

Page 10: ...s taken into the units at the bottom and is exhausted at the top a location with good air flow will provide more effi cient operation FOUNDATION REQUIREMENTS Indoor Equipment Suitable means must be provided by the purchaser for mounting and anchoring the switchgear to the floor CAUTION IF THE FOUNDATIO V IS SUA ECT TO V I B RATIONS SPECIAL MOU NTING MUST BE PROVIDED TO PREVENT THE TRANSMITTAL OF V...

Page 11: ...by the pad or other means ANCHORING The switchgear should be mounted on top of the channels as shown in Figures 11 and 12 and securely anchord to them METHOD OF ANCHORING ANCHOR BOLTS FLOOF CHANNELS T SHIMS BY PURCBASEN SIOE VIEW OF FLOOR FRAME SHOWING SEARII G SURF CES OF FRONT REAR AiIO C NTER CHAITIIELS FOUNDATION DATA EOUIPMEXT IS FUFNISHEO IVITH EUILT II FLOOE FNAI E EMBEODEO CHANNELS SHOULO ...

Page 12: ... upright channels It is par ticularly important that this bus be connected since it pro vides an integral ground for all the equipment that should be connected to the station ground Neutral buses are mounted on molded insulators that are attached to the rear upright channels If a transformer is present in the Iineup make the necessary connections from the equipment to the flexible connectors furni...

Page 13: ...inal connectors to the ends of the bars in the cable compartment A non oxidizing lubricant such as D50H47 furnished with each equipment can be used at these connection surfaces Lash the cables permanently to the cable supports 11 Remove the lifting brackets from the front and rear channels If equipment is furnished with add on com partments brackets at the rear cannot be removed And Flat Washer 1A...

Page 14: ...NEWS AND LOWER EOTTOM III SHIELD To FLoon LrN ll 1 lt R SSEMBL rHE 2 SELF z TAP SCREWS J II SOTTOM SHTELD llt P E IL r sAR BUS 2 8AR BUS 3 AAR AUS HAROWAFE v 8OLTS NUTS CoNICAL ANo FLAT WASHEnS vlEw F MAIN BUS SPLICE NOTES I ALL SHIPPING SPLIT HARDWARE TO 8E OISASSEMBLEO BEFORE AOJACENT SHIPPING PACKAGES ARE SET IN PLACE NEASSEMBLE TO SECURE SHIPPING SPLIT 2 AUXILIABY UNIT OR AUXILIARY UNIT ADAPTE...

Page 15: ...HIPPING suPPoRrs YELLOW RUBSEN SEAL l 331E I I r ilc lu i flliF f I I i i i i i TFANS OPEN I NG il i rRANS l r L SHIELOS I t PAD FINISH SURFACE I AAB BUS 2 BAR BUS NEMOVE LIFTING PLA E 3 8AN BUS At Tg P REMOVE LIFTING PLATE I ASSEMBLE SPLICE PLATES FRONT AND NEAR I 1 SHtPPtNG q SPLIT I HAROWARE BOLTS NUTS CONICAL AND FLAT WASHERS vtEw F MAIN BUS SPLICE NOTES 1 ALL SHIPPING SPLIT HAROWARE AANENS RO...

Page 16: ...front view drawings the breaker name plate ahd on the identification card on the breaker ship Prrrli Lar Lwrr 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 or the mark number on the breaker nameplate All identical breakers will have the same mark number BREAKER IN...

Page 17: ...8 Engage the racking handle This is done by pushing the trip button in the breaker escutcheon sliding the cover below it to the right and inserting the handle on the jack shaft 9 Turn the handle counter clockwise as far as it will go if it will move in that direction and remove the handle 10 Push the brea er in against the track stops Rotate the two track lock links to lock the breaker in place Cl...

Page 18: ...toge Switchgeor FlG t6A 8035642 With innerhouse in DISCONNECTED posi tion open the compodmenl door Rotote the lwo trock lock links Pull out right trock comPletelY FlG l68 8035640 Let out Hoisl Coble Ploce hooks in slots l8 ...

Page 19: ...ltoige Swifchgeo r GEK 72101 FlG l6C 8035639 Adiusr coble to bolonce breoker Coble eye must be under boll neorest ihe hoist FlG l6D 803563 Roise breoker unril mounting pins ore obout one inch obove trocks t9 ...

Page 20: ...GEK 7 21 01 Low Vohoge Swif chgeo r FlG t5E 803564 l Pull left trock oul completelv FlG t6F 8035635 Lower the Breoker into the lrock slots Remove tne Hoist Coble 20 ...

Page 21: ...ow V oltage Switchgeo r GEK 721 0l FlG l6G 8035636 Push the breoker in compleiely ond roiote lhe two trqck lock links Close the door i l FIG 17 8041582 AKRU or AKR breoker ond spreoder on hoist coble 2l ...

Page 22: ...REAKERS A shunt trip device is an accessory used for electrical tripping A normally open auxiliary switch a contact opens the control circuit after the breaker opens NOTE FOR FURTHER IiVSIRUCflONS RE FER TO TITE NSTRUCTION BOOK FUR NISHED WITH THE BREAKER TESTING AND INSPECTION Although the equipment and devices have been tested at the factory they must be tested and inspected in the field before ...

Page 23: ...ON TEST All compartments housing all AK and AI R circuit breakers have a TEST position in which the breaker pri mary contacts are disconnected while the secondary con tacts are still engaged This TEST position permits complete testing of the electrical control circuit without energizing the primary power circuit When the breaker is first put into service its control circuit must be thoroughly test...

Page 24: ...linkage must be moved through a prescribed distance before operation of the mech 24 anism is possible When the tube is pushed back so that it will clear the pin a cam surface on the interlock slide 46 engages a trip link on the side of the breaker and holds it trip free as long as the handle is engaged or the interlock tube is in the retracted position There is also a stationary cam in the house w...

Page 25: ...nsert the breaker in this manner The inertia of the breaker can then be used to aid in pushing it onto the primary disconnects RACKOUT MECHANISM OPERATION AKR BREAKERS Part numbers in Figure 20 refer to sheet and part num bers in the 0673D0500 series of drawings The rackout mechanism for AKR breakers is mounted on the breaker itself and a description and details of this mechanism are given in Main...

Page 26: ...STOP L 1VKS 634 47 IN FIGURE 2O AT THIS POINT THE TRACK LOCK LINKS CANNOT BE ROTATED TO THE LATCHED POSITION AND THE RACKOUT MECHANISM WILL NOT FUNC TION CORRECTLY NOTE THE EMERGENCY OPERATION DESCRIBED FOR AK 75 lOO BREAKERS OJV PAGE 25 CANNOT BE PERFORMED FOR AKR OR AKRU BRE AKERS DUE TO DIF FERENCES IN THE DRAWOUT MECH ANISMS KEY INTERTOCKS KEY INTERIOCKS FOR AK BREAKERS OPTIONAL Part numbers i...

Page 27: ...o either the TEST or the DISCONNECTED position while the key is removed from the lock In these positions the breaker can be operated for checking or maintenance KEY INTERTOCKS FOR FUSE ROLTOUTS INCLUDED AK breakers that are used in AKD 6 switchgear cannot be equipped with fuses as an integral part of the breaker assembly When fuses are required with these breakers they are mounted inside a drawout...

Page 28: ...5 refer to sheet and part num bers in the 0673D0500 series of drawings This door interlock consists of a link 074 03 mounted on the inner house side sheet of the breaker compartment A combination torsion compression spring is mounted on the link pivot pin and biases the link in a forward direc tion One end of the link engages a clip on the door latch 640 02 and the other end engages with the racko...

Page 29: ...LOCK PLATE 622 02 PADLOCK BY CUSTOMER DOOR LATOH 640 02 DOOR LOCKED FlG 25 0121C1509 Door Interlock ond Podlock device for AK breokers HOOK 844 04 LINK 844 03 BRACKET 844 O5 DOOR LOCK ACCESS HOLE 4 35 KEEPER ON BREAKER BRACKET ON BREAKER DOOR CLOSED DOOR INTERLOCK FlG 26 75CI50023 Door Interlock for AKR breokers DOOR OPEN 29 ...

Page 30: ...ked Only one padlock can be used with this device If more padlocks are required a lock out device is furnished This has a single ring and provi sions for locking the ring with six padlocks thus perform ing the multiple padlock function The compartment door must be opened to put the padlock or lockout device on but there is no interference with the door after they have been placed in position NOTE ...

Page 31: ...ite limits cannot be given for satisfactory in sulation resistance values a record must be kept of the readings Weakening of the insulation from one mainte nance period to the next can be recognized from the re corded readings The readings should be taken under simi lar conditions each time if possible and the record should include the temperature and humidity FEEDER CABLE AND BUSWAY COMPARTMENT a...

Page 32: ...EEilERAT EI ECTRIC C DrsrRrBuTt0il t0urPtEltT 0lYtsr0il PtililYtLLE C0ilt 06062 GENERAL ErECTRlc Printed in u s A ...

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