Summary of Contents for AKR-30S

Page 1: ...Installation and Maintenance Instructions Courtesy of NationalSwitchgear com...

Page 2: ...ered The first is the location s environmental impact on the breaker Better performance and longer life can be expected if the area is clean dry dust free and well ventilated The second is convenience...

Page 3: ...surface free of protrusions that could damage the breaker s internal parts SECTION 3 Operation mov mcn1 of The solenoid rma1ure vvhich Initiates the 1 r e i 1a ic l p ther rernote s M tch or front esc...

Page 4: ...This action pushes a rod against a trip paddle of the trip shaft rotating it and causing the mechanism trip latch to be displaced This allows the mechanism linkage to collapse through the action of th...

Page 5: ...ed CAUTION CARE SHOULD BE EXERCISED IN SEPARATING THEM TO AVOID DAMAGE TO THE TRIP SHAFT ARMS AND PADDLES While the back frame is held steady lift the front frame and mechanism up and out Reassembly o...

Page 6: ...S THAT APPEAR TO BE CLOGGED If any very extensive burning or corrosion is noted in the arc quencher it should be replaced Replacement is also indicated if any breaks or cracks are noted in the ceramic...

Page 7: ...0 front a nd bac fran1es as m rlinAd m Ser tion 4 2 Remove two hole plugs 3 Fig 6 from barrier 2 Fig 5 Remove the U shaped insulation barrier 6 from each pole by lifting it and disengaging the rivet h...

Page 8: ...lso be adjusted without removal of the upper stud by slightly bending the stationary hool ends Up to increase force Down to decrease force Mechanism The breaker mechanism is a spring actuated over cen...

Page 9: ...of the operating mechanism frame Its operating shaft is linked to the output crank of the breaker mechanism Through a cam arrangement the operating shaft of the switch controls the open and closed pos...

Page 10: ...vitch mounted on the upper flange of the closing solenoid coil A hole in the escutcheon 3 Fig i 0 permits access to the switch button 4 When the button is pressed movable contact 5 deflects and imping...

Page 11: ...hanism in the RESET position 20 1 Stop 2 Armature 3 Insert wire gage Fig 12 Undervoltage device positive trip check SECTION 7 Protective Devices the lm aker when its coil i c to diPViGe i5 the rated v...

Page 12: ...TAGE ARMATURE Fig 14 Electric lockout device 2 Check output voltages on terminals 4 and 5 with the undervo tage device connected See Table 2 tor values 3 Check resistance of the disconnected undervolt...

Page 13: ...haft paddle by a minimum of 1 32 inch 2 Check that each armature holds the breaker trip free when the armature position is limited in reset by the lower latch surface on the indicator blown fuse condi...

Page 14: ...ntifying overload or short circuit over currents faults when breakers are ordered without integral ground fault protection They are also available to identify overload short circuit and ground fault t...

Page 15: ...al from the programmer unit trips the breaker by actuating the trip shaft The mounting arrangement of this component is illustrated in Fig 21 An electromagnetic actuator located on the right side ACTU...

Page 16: ...breaker mounted neutral secondary disconnect block through to the female harness connector c If the breaker s lower studs connect to the supply source then the neutral sensor must have its LOAD end co...

Page 17: ...t module inserted between breaker harness and MicroVersaTrip programmer unit for use during single phase high current low voitage testing 32 SECTION 8 MicroVersaTrip Trip Device I I I PARTIAL LFFT POL...

Page 18: ...ting amperes Inrush Continuous DC 125 2 5 2 5 250 0 9 0 9 60 Hz 120 30 10 AC 240 15 5 480 7 3 Co y a o efany f f li rlJ l f ilj 3 2 b ii h rnsh S i ed f 0 S a l J i 1 j Jp r rn C oc 1 oz n 4 i Li 95 1...

Page 19: ...208 50 175 220 3 8 3 1 30 10 240 60 190 254 3 9 3 4 37 12 240 50 190 254 4 7 4 1 34 11 240 40 190 254 5 8 5 1 N A N A 380 50 315 410 2 9 2 6 22 08 480 60 380 508 3 4 3 1 23 08 480 50 380 508 7 5 7 3...

Page 20: ...2000 AKR 75 1200 1600 2000 3200 A R 00 1600 2000 3000 4000 ll 3nl ocno l Tapa AmP ICCll 800 EnveloP 400 200 600 300 800 4 l l 1600 Envelope 000 400 000 500 1200 600 1600 000 2000 nvelopo 2000 1200 25...

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