GE AKR-30 Series Installation Manual Download Page 14 | Manualshive

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Courtesy of NationalSwitchgear.com

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Summary of Contents for AKR-30 Series

Page 1: ...Utl OD IDU A Installation Manual j l tow Voltage Power Circuit Types AKR 8Q 50 and AKRT 50 GENERAL ELECTRIC Courtesy of NationalSwitchgear com ...

Page 2: ...ons in this publication are general in nature For more detailed information on troubleshooting overhauling or replacing parts refer to the following Maintenance Manual Renewal Parts EC Trip Devices ECS SST Test Set Cat TAK TS2 MicroVersa Trip Test Set Cat TVTS1 Time Current Curves Obsolete Test Set for ECS SST Cat TAK TS1 GEK 64459 GEF 4527 GEI 86157 GEK 73300 1 GEK 64464 GEZ 4431 GEK 64454 These ...

Page 3: ...AKRT A 50H AKRT B 50 AKRT B 50H AKRT D 50 AKRT D 50H 2000 2 AKRU OA 30 AKRU A 50 800 AKRU B 30 AKRU B 50 AKRU D 30 AKRU D 50 3 3 1600 Special Dc Breakers For Field Switching 800 AKR NS 30F AKR NS 50F AKR NB 30F AKR NB 50F AKR ND 30F AKR ND 50F 2000 1 All substructures and AKD 8 breakers employ a deep escutcheon 2 The H suffix denotes extended short circuit ratings 3 Integrally fused models This di...

Page 4: ...e are two factors tobe considered The first is the location s environmental impact on the breaker Much better perfor mance and longer life can be expected if the area is clean dry dust free and well ventilated The second is convenience for operation and maintenance The breaker should be easily accessibleto the operator andthere shouldbe sufficient space available for maintenance work STATIONARY BR...

Page 5: ...inserted in its compartment the primary and secondary disconnect contacts are fully engaged The breaker must be tripped before it can be racked into or out of this position TEST In this position the primary contacts are discon nected but secondary contacts remain engaged This allows complete breaker operation without energizing the primary circuit DISCONNECTED Both primary and secondary contacts a...

Page 6: ...ewcover totheright releasing the TRIP button locks the cover open 8 Rotatethe rackinghandle counterclockwise if possible until it stops then remove it The purpose of this step is to positiontheslottedcrank armsattheproperanglenecessary to engage the fixed racking pins in the compartment 9 Push the breaker in against the track stops Rotate the two track lock links to lock the breaker in place Close...

Page 7: ...GEI 86150 A 1600 AMPERE SUBSTRUCTURE Figure 4 AKR 50 breaker B type drawout substructure mounting manually operated 7 Courtesy of NationalSwitchgear com ...

Page 8: ...on 6 Close the compartment door Insert the racking handle into the racking screw opening in the breaker escutcheon By clockwise rotation of thehandle movethe breaker through the TEST position into the CONNECTED position the latter is indicated when the jackscrew comes to a solid stop Breaker Removal Code B 1 With the door closed and latch trip the breaker 2 Insert the racking handle and rotate it ...

Page 9: ...GEI 86150 A i a Fig 5 9 Courtesy of NationalSwitchgear com ...

Page 10: ...mary and secondary contacts are disengaged WITHDRAWN With the compartment door open the breaker can be manually pulled out to the WITHDRAWN position At this point the tracks are fully extended and the breaker is completely out of its compartment ready for re moval Note that the racking mechanism is not employed for movement of the breaker between the DISCONNECTED and WITHDRAWN positions 1 With the...

Page 11: ...rcur rent tripdevice which includesa groundfault element for use on 4 wire circuits an additional terminal board is provided on the breaker for connecting to the equipment mounted neutral sensor physically located in the neutral conductor On drawout breakers the control circuits terminate in the breaker compartment on the stationary portion of separable secondary disconnects see fig 7 3 X o CLOSIN...

Page 12: ...anti pump relay W If the closing switch is maintained closed the anti pump relay will remain picked up to prevent a second closing operation on the breaker in the event it is tripped open automatically The closing impulse must be released and reapplied before a second closing operation can occur MANUAL CLOSING Manually operated AKR breakers are constructed with front mounted handles Handle operati...

Page 13: ... The performance of the solid state current trip devices may be checked with a suitable test set Check electrome chanical devices for positive trip in accordance with the instructions in their Maintenance Manual GEK 64459 6 Check insulating parts for evidence of overheating and for cracks that indicate excessive thermal aging Periodic inspection of the circuit breaker is recommended at least once ...

Page 14: ...ratings may be interchanged in one direction only Specifically a An AKR 30H can be inserted into an AKR 30 compartment b An AKR 50H can be inserted into an AKR 50 compartment The rejection hardware prevents the converse of a and b Figures 15 16 and 17 display the rejection pin bracket combinations employed for the various breaker models and frame sizes As dictated by its intended breaker type each...

Page 15: ...ejection pin in the drawout rail When the wrong type breaker is inserted into compartment the bracket and pin do not mate prevented the breaker from seating itself into the rail slot Breakers of the same frame size having different short circuit rating may be interchanged in one direction only Fig 17 will show the interchangeable Horizontal mounted Lower Studs Right Rail Left Rail A A A A A A A A ...

Page 16: ...ical models deployed else where in the power system The segregation is physical and is accomplished by supplemental rejection hardware added to the breaker and its drawout compartment In this publication these special category breakers are designed as E type They are interchangeable as follows A 4FRONT RIGHT SLIDE RAIL n iWt 000 n 1 A SECTION A A ADDITIONAL PIN FOR E TYPE REJECTION A T A type draw...

Page 17: ...T MOUNTED ONBKR o A o o t AKR 4A 50H 1 5A 50H 1 6A 50H 1 NA 50H 1 LEFT SLIDE RAIL RIGHT SLIDE RAIL REJECTION PIN MOUNTING POSITIONS 3 V AKRT 4A 50H 5A 50H 6A 50H NA 50H AKRT 4A 50 5A 50 6A 50 NA 50 11 MOTES 1 All breaker models listed within a given block are interchangeable Except where joined by arrows units in one block are not interchangeable with units in any other block 3 3 Denotes one way i...

Page 18: ...50H 1 LEFT SLIDE RAIL RIGHT SLIDE RAIL REJECTION PIN MOUNTING POSITIONS 3 V AKRT 4B 50 5B 50 6B 50 NB 50 AKRT 4B 50H 5B 50H 6B 50H NB 50H I t I t c B A All breaker models listed within a given block are interchangeable Except where joined by arrows units in one block are not interchangeable with units in any other block Denotes one way interchangeability in direction indicated These pin and bracke...

Page 19: ...RAIL REJECTION PIN MOUNTING POSITIONS 3 AKRT 6D 50H ND 50H NOTES 1 All breaker models listed within a given block are interchangeable 2 Except where joined by arrows units in one block are not interchangeable with units in any other block 3 Denotes one way interchangeability in direction indicated providing lower studs are the same 4 These pin and bracket combinations are identical to those employ...

Page 20: ...amperes continuous based on rating of 16 control wire Adequate for breaker shunt tripcoils with voltage ratings same as tabulatedabove 12 3Amax forthe 120V ac coil These instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation operation or maintenance Should further information be desired or ...

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