GE GEI -44233 E Instructions Manual Download | Manualshive

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Courtesy of NationalSwitchgear.com

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Summary of Contents for GEI -44233 E

Page 1: ...INSTRUCTIONS GEI 44233 F Supersedes GEI 44233 E TIME OVERCURRENT RELAYS TYPE IAC66K GENERAL W ELECTRIC Courtesy of NationalSwitchgear com ...

Page 2: ...NNECTIONS INSPECTION PERIODIC CHECKS AND ROUTINE MAINTENANCE TIME OVERCURRENT UNIT INSTANTANEOUS UNIT HIGH DROPOUT INSTANTANEOUS UNIT TARGET AND SEAL IN UNIT CONTACT CLEANING SYSTEM TEST SERVICING AND ADJUSTMENTS TIME OVERCURRENT UNIT PICKUP TESTS TIME SETTING STANDARD INSTANTANEOUS UNIT HIGH DROPOUT INSTANTANEOUS UNIT TARGET AND SEAL IN UNIT RENEWAL PARTS 3 3 4 4 4 5 5 6 6 6 6 6 7 7 7 7 7 7 7 7 8...

Page 3: ...0C B 51 UNIT UNIT UNIT 10 40 10 40 20 80 20 80 20 80 2 6 4 12 4 12 1 2 1 5 3 2 5 5 2 6 4 8 0 8 1 7 1 4 2 6 1 8 4 3 1 8 4 3 2 9 5 0 12 4 4 12 When adjusted as shown above the relay operates as follows For overloads the 51 unit times out picking up external auxiliary 51X which rings the alarm b e l l 1 For locked rotor the 50 I0C B unit w i l l pick up instantaneously and the 51 unit w i l l pick up...

Page 4: ...d seal in coils of the protective relay The standard instantaneous unit ranges available are 4 16 10 40 20 80 and 40 160 amperes The high dropout instantaneous unit ranges available are 2 6 4 12 10 30 and 20 60 amperes CHARACTERISTICS The time current characteristics for the Type IAC66K relay induction unit are shown in Fig 1 Fig 2 shows the time current characteristics of the standard instantaneo...

Page 5: ...ew which latches up and remains exposed until released by pressing a button beneath the lower left corner of the cover The standard instantaneous unit is a small instantaneous hinge type unit mounted on the right front side of the induction unit Its contacts are normally connected in parallel with the contacts of the main unit Its coil is connected in series with the operating coil of the main uni...

Page 6: ...ted by hand and should unlatch when the target release lever is operated Make sure that the fingers and shorting bars agree with the internal connections diagram The disk should 2 3 4 5 CAUTION CIRCUITS AND OTHER CIRCUITS WITH SHORTING BARS THAT THE AUXILIARY BRUSH BE BENT HIGH ENOUGH TO ENGAGE THE CONNECTING PLUG OR TEST PLUG BEFORE THE MAIN BRUSHES DO THIS WILL PREVENT CT SECONDARY CIRCUITS FROM...

Page 7: ... on the nameplate Dropout current should be at least 80 percent of the minimum rating on the nameplate TARGET AND SEAL IN UNIT PICKUP AND DROPOUT TEST Connect relay studs 1 and 2 see internal connections diagram to a DC source ammeter and load box so that the current can be controlled over a range of 0 1 to 2 0 amperes Turn the time dial to the ZERO TIME DIAL position Increase the current slowly u...

Page 8: ...ined in the ACCEPTANCE TEST section If the unit is not set at the minimum calibration mark pickup should be within 15 percent of the mark for which i t is set HIGH DROPOUT INSTANTANEOUS UNIT Check pickup and dropout current to the limits outlined in the ACCEPTANCE TEST section TARGET AND SEAL IN UNIT Check pickup and dropout as outlined in the ACCEPTANCE TEST section CONTACT CLEANING For cleaning ...

Page 9: ...the pole piece loosen the locknut and turn it up or down and then tighten in position The contacts should be adjusted to make at about the same time and to have approximately 1 32 inch wipe This adjustment can be made by loosening the screws holding the stationary contacts and moving the contacts up or down as required HIGH DROPOUT INSTANTANEOUS UNIT The high dropout instantaneous unit is similar ...

Page 10: ...y to prevent the right hand stationary contact from getting out of adjust ment Screws should not be in both taps at the same time RENEWAL PARTS It is recommended that sufficient quantities of renewal parts be carried in stock to enable the prompt replacement of any that are worn broken or damaged When ordering renewal parts address the nearest Sales Office of the General Electric Company specify q...

Page 11: ... Y N N V 9 10 10 Y N x x 9 Y 9 8 v V 8 8 N 7 7 7 N Y X X 6 6 6 s X X co c 5 5 o 5 3 O X V V Y 2 z c s X v O 4 4 m x s s 2 14 X x x e 5 S in Z 3 3 M Y n CO u O Y Y X V s z v s p p 2 o s m N X o Y X 4 X s 6 i i 9 9 I 8 8 N V 7 7 8 6 5 5 4 3 2 1 1 08 09 08 08 07 07 08 06 05 05 04 04 03 03 02 02 01 01 5 6 7 8 9 1 3 4 5 6 7 8 9 1 0 20 30 40 50 60 70 80 Bo S S g 8 8 in o r m 5 o s v CM n o MULTIPLES OF ...

Page 12: ...GEI 44233 WT I I a K 9 5 8 5 4 3 1 5 2 k FIG 2 0208A8695 1 Time current Characteristic of Standard Hi Seismic Instantaneous Unit 12 Courtesy of NationalSwitchgear com ...

Page 13: ...EOUS I NDUCTI ON STANDARO HI DROPOUT i SI r S I V V si pfc pk V t V V V V V o 9 3 5 1 10 6 2 SHORT FINGER FIG 3 402A903 1 Internal Connections Diagram for Type IAC66K Relay Front View 13 Courtesy of NationalSwitchgear com ...

Page 14: ... L TC t USE WHENNECESSARY FOR CONTACT ARC SUPPRESS t ON 51 TIME OVERCURRENT RELAY 51X AUXILIARY RELAY NORMAL DROPOUT INSTANTANEOUS OVERCURRENT UNIT POWER CIRCUIT BREAKER 50 IOC A 52 50 IOC B HIGH DROPOUT INSTANTANEOUS OVERCURRENT UNIT 52 a AUXILIARY CONTACT CLOSED WHEN CIRCUIT BREAKER IS CLOSED TC TRIP COIL FIG 4 104A8568 3 Typical External Connections for Motor Protection Using Type IAC66K Relays...

Page 15: ...IG MAIN BRUSH CONNECTING BLOCK CONNECTING PLUG TERMINAL BLOCK SHORTING BAR AUXILIARY BRUSH NOTE AFTER ENGAGING AUXILIARY BRUSH CONNECTING PLUG TRAVELS 1 4 INCH BEFORE ENGAGING THE MAIN BRUSH ON THE TERMINAL BLOCK 8025039 Cross Section of Drawout Case Showing Position of Auxiliary Brush FIG 6 15 Courtesy of NationalSwitchgear com ...

Page 16: ... 2 187 56MM 4 375 l 1 1 MM 1 5OG 3 000 __ feo e e T i 46v i e iC37UM 8 812 223MM 4 281 CI08MM 3 9 UI 4 3 76MOr I 718 x COMM t DRILL A HOLES 6MM 6MM 250 VIEW SHOWING ASSEMBLY OF HATOWARE FOR SURFACE MTG ON STEEL PANELS iL 500 rtl2MM TYPICAL 133MM 5 2 5 DRILL 10 HOLES I9MM PANEL DRILLING FOR SEMI FUJSH MOUNTING CFRONT VIEW PANEL DRILLING FOR ym ING FIG 7 K 6209271 6 Outline and Panel Drilling for th...

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