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Содержание IAC51V

Страница 1: ...INSTRUCTIONS TIME OVERCURRENT RElAY TYPE IAC51V GEK 65514 Supplement to GEH 1753 GENERAL flELECTRIC w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Страница 2: ... I 1 y I 2 SHORT FINGER GEK 65514 6 INSfANTANEOUS HI DROPOUT I Ii t I 9 10 Fig 1 418A734 l Internal Connection Diagram for Type IAC51V Relay 2 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Страница 3: ...aneous unit is similar to the standard instantaneous unit except it has no target and dropout current is approximately 80 90 percent of the pickup current Fig 2 is a picture of the high dropout unit The adjustable core A sets the pickup level Turning the core down clockwise top view lowers the pickup while t rning the core up counterclockwise top view increases the pickup Before attempt ing to tur...

Страница 4: ... characteristics Burden data for 60 hertz units is shown in Table II Range Amperes 0 5 1 5 1 0 3 0 2 0 6 0 4 0 12 I 1 Burden __J___ etti ng I R ohms 12 7 3 2 0 76 0 19 I 0 042 i I TABLE II r at Min Pickup and Min Current X Z ohms ohms 10 6 2 6 0 66 0 17 0 042 16 5 4 0 1 0 0 25 1 Vo1 t Amperes j from Input I at 5 Amperes Calculated at Min Pickup r2z 412 100 I I 10 30 20 60 0 008 0 015 l _L_____ L 2...

Страница 5: ... F 6 1514 ADJUSTABLE CORE A LOCKNUT B SLEEVE C SHA DING Rlt G D1 Fig 2 8036365 Construction of the High dropout i i w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Страница 6: ...010 0 005 0 0 1 2 J GEK 65514 4 OPERATING TIME RANGE FOR y PICKUP SETTING 5 6 7 MULTIPLES OF PICK UP 9 g 10 rig U 6306872 5 Operating Time Versus Current for the Standard Instantaneous Unit 6 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Страница 7: ... t T T f J r r r t T T H i t l t t j t t j t 1 t L t t _ t tj t1f i 1 t 15 Hr t i t 1 j q t JH t h t tt _ _H t 0 t 4 t t h 11 H r 1 l_ t R R1 t_ t ti r t u 4 tit F Hf t tt H 1 4 d n tt _ H f H r _ _ _ j _ 1 t h r I H i 17it1 f L II t t r H ll t t If t r Ht t h rfi 1 t i t H t t t t 1 rt t t r 1 0 1 f 1 t r r t t l f t L t t t jl i H r j_ 1 tJ L 1 Ul f t _ t T1f t 1 11 t r t 4_ p ti RJ H _ ol T __ ...

Страница 8: ...GE Power Management 215 Anderson Avenue Markham Ontario Canada L6E 183 Tel 905 294 6222 Fax 905 201 2098 www ge com indsys pm w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Страница 9: ...INSTRUCTIONS TIME OVERCURRENT RELAYS TYPES IAC51A IAC52A IAC51B IAC52B IAC51R GENERAL fJ ELECTRIC GEH 1753J w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Страница 10: ...T k SEAL IN UNIT STATIONARY CONTACT LEFT SEAL IN UNIT S1 ATIOtoiARY CONTACT RIGHT SEAI IN MOVING CONTACT ASS EMBLY __ 3 A 8006996 Front View OWER JEWEL SCREW DISK DRAG oc4 NAGNET B 8006997 Rear VieW Fi urc 1 The nduction Cnit for Type lAC Rel ays 2 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Страница 11: ...piral spring to give the proper contact closing current and its motion is retarded by a permanent magnet acting on the disk to give the correct time delay There is a seal in unit mounted on the front to the left of the shaft This unit has its coil in series and its contacts in parallel with the main contacts such that when the main contacts close the seal in unit picks up and seals in When the sea...

Страница 12: ... r r I f 1 b 1 b t h r r r r _ r 1 f r 1 I r r I 4 I I 1 I I 10 r t 20 r r 1 I 10 r f r r 9 r r r a 1 7 f 1 _ 6 1 r I 0 f r c 1 4 1 r f 3 G r f 1 1 2 1 0 1 1 t 0 t r 1 I CD E 1 r r 30 40 50 10 70 80 110 MULT PLES OF RELAY TAP SETTlNG Fig 2 088880269 3 Time current Curves of Type lAC Relays with Inverse time Characteristics w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Страница 13: ...Ij II v e 0 Time Overcurrent Relays Type IAC GEH 1753 BURDENS Burdens for the standard coils are given in the following table These are calculated burdens at five amperes based on burden of minimum tap Volt ampere burdens for the lowest tap on any of the three coils can be determined for any value of current up to 20 times tap setting from Fig 3 Coil Amperes 4 16 1 5 6 0 0 5 2 0 I _ i_ v vv v v I ...

Страница 14: ...ll l E Tij pPJ ACTOR I U I llcl 1 1 1 Fi 5 K6375668 l External Connections of Three Type IAC51A R lays used in Conjunction with Tripping Reactors for Protection of aTihree Phase Circuit 6 A C BUS r aJJI ll 1 1 1 21 t t L 52 Fig 4 K 6375667 2 Exte rnal Connections of Three Type IAC51A Relays used for Phase to Phase and Ground Over current Portection of a 3 Phase Circuit A C BUS Fig 6 K 6375669 6 Ex...

Страница 15: ...a predetermined value OPERATING CHARACTERISTICS The instantaneous element operates over a 4 to 1 range and has its calibration stamped on a scale OPf ATIIIG COIL TA GfT R STATIONARY CONTACTS MOVING COIITACT ASSEMBLY Fig 7 8006998 Type lAC Relay with an Instantaneous Vnit mounted beside the adjustable pole piece Time current characteristics are shown in Fig 10 RATINGS The instantaneous unit is desi...

Страница 16: ...transformer Normally most of the flux generated by the main REA coil passes through the upper limb of the magnetic structure and holds the armature firmly against this limb When the contacts of the induction unit close the shorting coil of the REA is short circuited and current flows in this coil by transformer action causing a redistribution of flux which actuates the armature and the REA contact...

Страница 17: ... included as a part of a control panel will be shipped in cartons designed to rotect them against damage Immediately upon receipt of the relay an examination should be made for any damage sustained during shipment If injury or damage resulting from rough handling is evident a claim should be filed at once with the transportation company and the nearest Sales Office of the General Electric Company ...

Страница 18: ... 2 4 6 8 10 A C iRIP UNIT INSTANT Ut l Fig 13 K 6209294 3 Internal Connections for the Type IAC51R Relay Front View SEAL IN UNIT Sl INDUCTION 2 INDUCTION UNIT 6 SHORT FINGER Fig 14 K 6209662 5 Internal Connections for the Type IAC52A Relay Front View w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Страница 19: ...diagrams for the various relay types are shown in Fig 11 to 17 inclusive Typical wiring diagrams are given in Fig 4 to 6 inclusive One of the mounting studs or screws should be permanently grounded by a conductor not less than No 12 B S gage copper wire or its equivalent INSPICTION At the time of installation the relay should be inspected for tarnished contacts loose screws or other imperfections ...

Страница 20: ...2 The primary adjustment for the time of opera tion of the unit is made by means of the time dial However further adjustment is obtained by moving the permanent magnet along its supporting shelf moving the magnet toward the disk shaft decreases the time while moving it away increases the time H selective action of two or more relays is required determine the maximum possible short circuit current ...

Страница 21: ...er edge of the stationary contact sup porting post 2 ARMATURE ADJUSTMENT Loosen the two screws which hold the armature assembly bracket to the bottom of the frame Slide the bracket in or out whichever is necessary untfl the armature just touches the pole face of the upper core In this position the armature should be about 1 32 inch from the pole face of the lower core Next slide the bracket in unt...

Страница 22: ...ERIODIC TESTING An operation test and inspection of the relay at least once every six months are recommended Test connections are shown in Fig 18 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 pany specify quantity required name ofpartwanted and give complete nameplate data If p...

Страница 23: ...C5 R STUD NUIIBER I NG FRONT V I EW F I G 8 I I AC528 i OUTLINE i 1 3 5 7 9 0000 0 0 0 0 0 2 6 8 10 PAN E L R LL I NG S 11 1 f liJSH MTG F I G A B CAS V I EW SHOW I NG ASSEMBLY OF HARDWARE FOR SURFACE MTG OH STE E L PANE L S i g 18 237C707 l Out l i ne and Panel Dr i l l i n g for the Type I AC 5 1A IAC5 1 B I AC 5 1 R I AC52A and I AC5 2B Re l ays 1 5 w w w E l e c t r i c a l P a r t M a n u a l...

Страница 24: ...GE Power Management 215 Anderson Avenue Markham Ontario Canada L6E 183 Tel 905 294 6222 Fax 905 201 2098 www ge com indsys pm w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

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