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DEVICE FUNCTION NUMBERS FOR USE

WITH ALL EXTERNAL DIAGRAMS

Instantaneous Element

51 - Overcurrent, Relay, Type lAC

51N- Ground Overcurrent Relay, Type lAC

- Power Circuit Breaker

SI - Seal-in Unit, with Target

TC - Trip Coil

A - Auxiliary contact, closed when breaker

closes.

A-C B�oS

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Ex te rna l Con n ec t i on s of T h r e e Ty p e

I ACS I A Rel ays U sed i n Conj u nc t i on

W i th

T r i pp i n g

Reactors for Protect i on o f a Th ree-Phase C i rcu i t

Time Overcurrent Relays Type lAC

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E x t e rn a l Con n ec t i on s o f Th r e e T y p e

I ACS I A Rel ays Used For Phase- to-Phase an d Gr.ound

O v e rc u r r e n t P ro t ec t i on of a 3- P h a s e C i rcu i t

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A-( BUS

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A-C TR I PP I O G

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E x te r n a l Con n e c t i o n s of Three

I ACS I R Re l ay s , Used for S-Phase C i rcu i t

www . ElectricalPartManuals

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www

. ElectricalPartManuals

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Содержание DS-19

Страница 1: ... 341 DSW 341 DSM 341 DS 35 DSW 351 DSM 35 DS 381 DSW 381 DSM 38 DS 39I DSW 39 DSM 39I DS 40I DSM 40 DSW 4 W 41 DSM 411 DS 43 DSW 441 DSM 44 GENERAL ELECTRIC GEH 764AB SupiJf sedes GEH 764AA 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 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: ...Mounting DS 41 DSW 41 DSM 41 Drawout Surface Mounting DS 44 DSW 44 DSM 44 Drawout Semi flush or Surface Mounting 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 should particular problems arise which are not cove...

Страница 3: ...alled by aligning it with the guides in the case and sliding into place The connecting plug is next inserted completing the electric circuits through the meter and locking the latch on the cradle The cover is drawn to the case by four thumb screws holding the connecting plug in place The DS 43 meter is the latest model drawout switchboard two stator polyphase meter It super sedes the DS 38 and DS ...

Страница 4: ...nished with potential circuit indicat ing lamps and have special potential coils with an 4 auxiliary winding connected to these lamps as illust rated in Fig 14 METERS FOR USE WITH CURRENT TRANSFORMERS In order to utilize effectively the accuracy of these meters 2 5 ampere meters are used with instrument current transformers The current coils have double the normal turns of the standard 5 ampere me...

Страница 5: ...o heating 3 When the connector has been set in its final position reinsulate the wires with the proper tubing and replace the outer protective sleeving Care should be taken to locate the butt joints in the tubing so they are not opposite each other or a section of bare wire Adjustments Between Stators Equalizing the torque of the stators may be accom plished from the front of the meters and withou...

Страница 6: ... tight Jewel Screw are given with reference to Fig 1 a Remove the guide bushing by means of the combination jewel and pivot wrench b Invert the screw and allow the jewel setting plug to drop out If the plug does not drop out readily gently tap the head of the screw c By means of a wire loop oil applicator put two drops of G E Watthour Meter Jewel Oil in the reservoir of the jewel screw Allow a sho...

Страница 7: ...d the disk need adjusting for proper clearance in the retarding magnet gap this may be accomplished by loosening the clamp ing screw of the guide bushing and moving the guide bushing and jewel screw assembly up or down as desired h The top bearing should then be reset by push ing the disk of the moving element up against the top of the retarding magnet gap a d the electrical driving stator gap and...

Страница 8: ... r f 28thra ads L 5 r t l6 ru 1 f i Jal A l 3 j irdriii Zholos t 18 thrczads Dimension A for the DS 20 and DSW 20 is 7 in Dimension A for the DS 35 and DSW 35 is 7Ys in For the DSM 20 the dimension is 82 12 in For the DSM 35 the dimension is 8 18 in Fig 5 Dimensions and front view drilling plan Fig 6 Dimensions for Types DS 35 DSW 35 for Types DS 20 DSW 20 and DSM 20 and DSM 35 See notes I 2 and 3...

Страница 9: ...earance holes for all stud Textolite projection whether or not studs are used at that location Drill H in clearance holes for the four mountmg studs 2 Contact device terminals K Y and Z are turnished for Types DSW 38 39 40 and 41 only For 25 cycle ratings of Types DSM 38 39 40 and 41 above 280 volts Y voltage for DSM 39 and 41 two extra termin ls K and Z are furnished 3 For Types DSM 38 and 39 the...

Страница 10: ...W PANEL DRILLING FOR SEMI FLUSH MOUNTING FRONT VIEW DSM 43 ONLY 7 8 19 532 CASE VIEW SHOWING ASSEMBLY OF HARDWARE FOR SURFACE MTG ON STEEL PANELS SURFACE MTG Fig 11 Dimensions for Types DS 43 DSW 43 and DSM 43 0 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 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: ...SM 44 ONLY 5 1 68 j I G T I I I I 1 I I l I I I I I I I fl I I I I I I I f I I I I I I I l lJl___________ I 19 u I 5 1 32 CASE VIEW SHOWING ASSEMBLY OF HARDWARE FOR SURFACE MTG ON STEEL PANELS Fig 12 Dimensions for Types DS 44 DSW 44 and DSM 44 11 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 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 12: ... ypes DS 19 D S 34 DS 38 and DS 40 b Types DS 20 DS 35 DS 39 and DS 41 Fig 14 Showing connections of open potential circuit indicating lamps to auxiliary potential windings front views Source Fuscu _Xt Potcnt el Transformer r o 1 I 1 i 4 I I Hl lr H tt t t o I I Currcr lt fl Tran formcr j 1 1 L __s _J load With Current and Potential Transformers NOTE For 3 wire 2 phase circuits wire A should be th...

Страница 13: ...1 Baek view Loed Currant tref lafom lcr r I L_ _j With Current Transformers Load With Current and Potential Transformers Fig 17 Connections for Types DS 19 and DS 34 for 4 wire Y 3 phase circuits back views Source N 3 2 1 Load 1 Current Transformer 6 l I I L I 1 I I I L _ _j With Current Transformers LOed I i L _j With Current and Potential Transformers Fig 18 Connections for Types DS 20 and DS 35...

Страница 14: ...ormers With Current and Potential Transformers Fig 19 Con ns for Tyf DS 40 and ns 4e ingie 2 Jbac _ k i J N 3 2 1 Fig 20 Connections for Types DS 38 DS 40 and DS 43 4 wire Y 3 ph se back view Back view Ht Load Xt p r H r Potential f transformczr Current transformer t R 9P JSC I7C f 1 I M I I I I I jc i L9P7C0 p 1 9 L _ o _ With Current and Potential Transformers Fig 21 Connections for Types DS 39 ...

Страница 15: ...CONNECTIONS FOR TESTING BOTTOM I LEMI NT NOTE5 1 I CONc tNTRIC aiNOIH6 P05T5 o R EO THUMB NUT CONNECT TO 5TU05 b LACK THUMe NUTS ENGAGE METER INTERNAL CONNECTIONS 2 REMOVABLE liNKS MUST LOCAH D 5HOWN Bt F OQE IN I ITING PLIJ i Fig 22 Field testing connections for Types DS 38 DS 40 and DS 43 using test plug model 12XLA12Al tr1 t LOAD t 1 tr1 00 0 0 0 0 tr1 r 0 CD 0 t 1 n r o 0 0 0 a s 00 0 r 0 c CD...

Страница 16: ...TOM ELEMENT FQONT VI CW Fig 23 Field testing connections for Types DS 39 DS 41 and DS 44 using test plug model 12XLA12Al 5 HOn 2 p CONNE CTIONS FOR TESTING THRI I r LEMfNTS WITH POTeNTIAL COILS IN MULTIPLE AND CURQENT COILS IN 5 QIES FQONTVIEW u f r j_ _ _ _ __ 1 _ __ __ j t t i 00 2l c n 0 2l 2l n 0 2l t c a 00 j w E l e c t r i c a l P a r t M a n u a l s c w E l e c t r i c a l P a r t M a n u ...

Страница 17: ...T RELAYS Types IACSlA IACSlB IACSlC IACSlD IACSlR IAC52A IACS2B G E N E R A L E L E C T R I C J zm it Eriit t n a 3 a res I 7 a 9 11 X r L 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 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 18: ...ATIONARY CONTACT LEFT SEAL IN UNIT STATIONARY CONTACT RIGHT SEAL IN MOVING CONTACT A SS EM TAP BLOCK T IME OIAL DISK DRAG MAGNET A Front View fig I The Induction Unit for Type lAC Relays B R ear View l 1 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 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: ... U Ye One Fig 19 1 ig 13 No Three Fig 20 Fig 14 Ye One Fig 19 Fig 15 No No One Fig 19 Fig 16 One Fig 19 Fig 17 molded inner and outer blocks between which nests a removable connecting plug which completes the circuits The o u t e r blocks attached to the case have the studs for the external connections and the inner b 1 o c k s have the terminals for the internal cannections The relay mechanism is...

Страница 20: ...r r r r r r t o r r r r i o r r 1 r 1 r 9 lO MULTIPLES OF loiiNIIoiUiol CLOSING CURRENT r 20 Fig 2 Time current Curves of Type lAC Relays ith Inverse time Lharacteristics I T lol 10 D 9 I A 8 L 6 E 5 T T 3 N 2 G l 0 5 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 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 21: ... 5 and 2 0 amperes The current closing rating of the contacts is 30 amperes for voltages not exceeding 250 volts The current carrying ratings are affected by the selection of the tap on the target and seal in coil as indicated in the following table Amperes AC or DC Function 2 Amp Tap 0 2 Amp Tap Tripping Duty 30 5 Carry Continuously 4 0 8 The 2 ampere tap has a d e resistance of 0 13 ohms and a 6...

Страница 22: ... P LES O F M I N I MUM TAP SETT I NG F i g 3 Satu rat i on Cu rves for Lowest Taps of the I n duct i on Un i t of Type 1AC Rei ay s wi th I nverse t i me Character i st ics 2 5 1 1 60 t U 50 TAP RANGE 0 5 2 0 25 TAP RANGE 60 1 5 6 0 50rv AMPS TAP 60 RA NGE 25 4 16 50 AMPS 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 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 23: ...s U sed i n Conj u nc t i on W i th T r i pp i n g Reactors for Protect i on o f a Th ree Phase C i rcu i t I HE Time Overcurrent Relays Type lAC F i g 4 E x t e rn a l Con n ec t i on s o f Th ree T y p e I ACS I A Rel ays Used For Phase to Phase and Gr ound O v e rcu rren t P ro t ec t i on of a 3 P h a s e C i rcu i t Jl t t A BUS J I 2 A C TR I PPIOG 1EE x1 IJI I j ll J 1 er _j f i g 6 E x te ...

Страница 24: ...TING CHARACTERISTI CS The instantaneous element operates over a 4 to 1 range and has its calibration stamped on a scale iii OPERATING COIL IH TARGET STATIONAfiV CONTACTS MOVING CONTACT ASS MIIL Y F i g 7 Type l AC Rel ay W i th An I nstantaneous Un i t 8 mounted beside the adjustable pole piece Time current characteristics are showJl in Fig 10 RATINGS The instantaneous element is designed to use e...

Страница 25: ... 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 cur rent flows inthis coil by transformer action causing a redistribution of flux which actuates the armature andthe REA contact...

Страница 26: ... as a part of a control panel wili be shipped in cartons designed to protect 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 transporta tion company and the nearest Sales Office of the General Electric Company notifie...

Страница 27: ...l Connect i on s for the Type I AC5 1 R Rel ay Front V i ew Time Overcurrent Relays Type lAC 6 8 SnORT F I NC R F i g I ll I nternal Connect i ons for the Type I ACS I D Rel ay Fron t V i ew SEAL I N Uh i T F i g 1 6 I NDUCT I ON I l 3 2 SHORT F I NCEI I n ternal Connec t i on s for the Type 1 Af52A Rel ay Fron t V i ew 11 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 w w w E l e c t r i c...

Страница 28: ...tion the relay should be inspected for tarnished contacts loose screwst or other imperfections If any t r o u b l e is founa it should be corrected in the manner described under Maintenance ADJUSTMENTS TARGET SEAL IN ELEM ENT For trip coils operating on currents ranging from 0 2 up to 2 0 amperes at the minimum control voltage set the target and seal in tap plug in the 0 2 ampere tap For trip coil...

Страница 29: ... short circuit current of 3750 amperes Assume further that cur rent transformers of 60 1 ratio are used Time Overcurrent Relays Type lAC The current tap setting is found by dividing the minimum primary tripping current by the current transformer ratio In this case 450 divided by 60 equals 7 5 amps Since there is no 7 5 amp tap the 8 amp tap is used To find the proper time dial setting to give 1 9 ...

Страница 30: ...MAINTENANCE The relays are adjusted at the factory and it is advisable not to disturb the adjustments If for any reason they have been disturbed the followingpoints should be observed in restoring them DIS K AND BEARINGS The lower jewel may be tested for cracks by exploringits surface with the point of a fine needle If it is necessary to replace the jewel a new pivot should be screwed into the bot...

Страница 31: ... AC5lC I AC52A I AC51R I AC528 OUTl iNE r 10 32 X 3 B IITG SCREW STUD NUMBER I NG 0RONT V I EW I G 8 1 3 5 7 9 0 0 0 0 0 0 0 0 0 0 2 4 6 B 10 CASE V I EW SHOW I NG ASSEMBLY OF HARDWARE FOR SURFACE WTG ON STEEL PANELS i DR I L L 2 HOLES F i g 1 9 Out i n e and Panel Dr i l l i n l for the Type I AC5 1 A I AC5 1 B1 I AC5 1 C I AC5 1 R I AC52A and I AC52B Rel ays 15 w w w E l e c t r i c a l P a r t ...

Страница 32: ...tll o Ol FOR SURFACE MTG It I 3 Q u u I0 32 ti MTG SCREW OUTLINE PANEL VIEW SHOWING ASSEMBLY OF HARDWARE FOR SURFACE MTG ON STE a PANELS PAN EL DRILLING FOR SUR F ACE MOUNTING FRONT VIEW F i g 20 Outl ine and Panel Dr i l l ing for the Type I ACS I D Rel ay G E N E R A L E L E CT R I C Hondbook Refw 7225 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 w w w E l e c t r i c a l P a r t M a n ...

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