Courtesy of NationalSwitchgear.com
Page 1: ...GEI 86151D Installation Instructions i Low Voltage Power Circuit Breakers TypesAKR 75 100 Courtesy of NationalSwitchgear com...
Page 2: ...S 16 5 SECTION 9 9 0 MAINTENANCE 9 1 Inspection 9 2 Lubrication 9 3 Reference Publications 17 SECTION 5 5 0 DRAWOUT BREAKERS 5 1 General 5 2 No Code Letter AKD Switchgear 5 2 1 Breaker Insertion 5 2 2...
Page 3: ...W 100 SPECIAL DC BREAKERS FOR FIELD SWITCHING Tube ARK N 75F X Fingers X X AKR NB 75F 25 Fingers X AKR ND 75F X 4000 Fingers X X AKR NF 75F Bar X AKR NS 75F 33 Tube AKR N 100F X Fingers X X AKR NB 100...
Page 4: ...ocation in an upright position Support it to prevent bending of the studs or damage to any of the breaker parts Do not cover thebreaker with packing or other material which absorbsmoisture that may ca...
Page 5: ...tebolted to the panel including a cut out opening through which the front escutcheon of the breaker can protrude 6 7 8 8 9 9 10 The surface on which the breaker is mounted must be flat to avoid intern...
Page 6: ...ms on the breaker are correctly positioned for initial engagement with the pins in the compartment To do this insert the rack ing handle and rotate it fully clockwise f If a compartment contains a key...
Page 7: ...tant at locations where AKR 75 and 100 breakers are being deployed in AKD equipments as replacements for AK 75 and 100 non quick close electrical models these compartments did not need and were not eq...
Page 8: ...tion observe the following precautions a Check the compartment to insure that it is free of foreign objects b Verify that the breaker is the correct type for that compartment c Insure that the breaker...
Page 9: ...lbreaker com partments of drawout switchgear equipments It provides means for making the primary and secondary connections to the removable breaker element and is factory aligned The breakers are bolt...
Page 10: ...mechanically securing the breaker in the DISCONNECTED position a position stop is employed It has a release lever marked Push to Withdraw and is located in the same place as the spring discharge relea...
Page 11: ...performed with the door closed 3 Open the door On electrically operated breakers de press the Spring Discharge lever to discharge the breaker s closing springs While holding this lever depressed pull...
Page 12: ...t FIG 6 AKR 9D 75 ELECTRICALLY OPERATED AKD 8 TYPE k r FIG 7 AKR 6F 75 ELECTRICALLY OPERATED SUBSTRUCTURE TYPE 12 Courtesy of NationalSwitchgear com...
Page 13: ...t to the breaker compartment they are mounted on a drawout carriage similar to a breaker frame and referred to as a fuse rollout element FRO A typical model is shown in Fig 8 As listed in Table 4 thes...
Page 14: ...nnections good joint conductivity is a must When making power connections to stationary breakers the mating joint surfacesmust be clean and have a smooth finish They should be parallel and firmly bolt...
Page 15: ...ll energize the motor through the G switch contacts see fig 11 The motor through the gear reduction output crank compresses the closing springs until they are fully charged As this fully charged posit...
Page 16: ...n the trip shaft carries paddles actuatedby themanual trip button and the various other trip devices overcurrent reverse current shunt trip undervoltage open fuse lockout Viewing the breaker from the...
Page 17: ...by the distinct click as the prop is set and prevents any further charging of the closing springs After the prop is set do not apply undue force to the maintenance handle 2 Depress the Spring Dischar...
Page 18: ...of Drawout Breakers 19 10 1 General 10 2 No Letter AKD Types 10 3 Code A Types 10 4 Code B Types 10 5 Code C Types 10 6 Code D Types 10 7 Code FTypes 10 8 E Type Rejection 19 19 19 19 19 19 19 t 18 Co...
Page 19: ...that breakers serving essential circuits be segregated from identical models deployed else where in the power system The segregation is physical and is accomplished by supplemental rejection hardware...
Page 20: ...0 4000A 11 I ll 4 K I 33 BREAKER MOUNTING PINS AKD 8 H It H H 1 AKR 75 4000A TAK83FCB 3200A AKR 75 4000A AKR 75 3200A Code AKR SUBSTRUCTURES Deep Escutcheon Code 0 H Code H 4 H h H TAK94FCB 4000A AKR...
Page 21: ...D type units to prevent insertion into B type substructures and AKD 8 Switchgear i REJECTION BRACKET INTERFERES WITH RAMP CAM ON SIDE WALL OF AKD COMPARTMENT AKR 5B 75 Fig 14 Rejection means on AKR 75...
Page 22: ...o o o o 4000A TAK94FCB TAK94FCD V AKR 100 1 Breaker side plate 2 Bottom flange of side plate 3 Rejection plate 4 diam pin in drawout tray 5 W diam pin in drawout tray 6 Clearance hole in plate and fla...
Page 23: ...SOOVDc 250VDC FIG 16 Refection hardware on AKR 75 100 Code C type drawout breaker elements side views 23 Courtesy of NationalSwitchgear com...
Page 24: ...600VAc 600VAC 3200A FUSE ROLLOUT ELEMENT TAK83FCC AKR 75 i 4000A FUSE ROLLOUT ELEMENT TAK94FCC i 24 Courtesy of NationalSwitchgear com...
Page 25: ...IN BREAKER FLANGE PIN IN DRAWOUT TRAY cr LU ID cr CD Li O z o t oc BASIC REJECTION SYSTEM PER FIG 13 JL PLAN VIEW Fig 17 Optional E Type rejection hardware on AKR 75 100 Code B D and F type drawout br...
Page 26: ...O CLEAR THE REJECTION PIN I f i i I RIGHT SLIDE RAIL I FRONT I I B t P PR X I I I I I 444 t I I l I B i s BRACKET E TYPE REJECTION PIN i t 4 4 Fig 18 Optional E Type rejection system on AKR 75 100 Cod...
Page 27: ...r maintenance Should further information be desired or should pardcular problems arise which are not covered sufficiently for the purchaser s purposes the matter should be referred to the GE Company G...
