GE CHC13D A Series, Instructions Manual

Page 1: ...INSTRUCTIONS FAULT DETECTOR RELAYS TYPE CHC13D A INTRODUCTION GENERAL _ ELECTRIC GEK 1256B Supersedes GEK 1256A Insert Booklet GEK 1253...

Page 2: ...11 GEK 1256 13 15 12 14 1 1 A A T R Figure 1 0208A2474 4 Internal Connections Diagram for Type CHC13D A Rel ay Front View 2...

Page 3: ...n the left hand side of the relay Its operating characteristics are the same as the PFD unit described in instruction book GEK 1253 The holding coil assembly prevents the fault detector contact from a...

Page 4: ...MAY 133MM 5 1 44 tJ Z 18 t OlIl Ih J 5 00 i 27MM REPLACE rS 25 2HOLl 1 DRILLED HOLES OPTlONA PANEL L r 88MM J I J It t 3 50 r 4 ir 10 00 _ I L 254MM J QI4MM 4 50 DR LL i_HOLES H1 f H1 H H f H f 7GM 18...

Page 5: ...S EXISTS BETWEEN STUDS II e 12 AND 14 15 SO THAT WHEN RELAYS ARE REMOVED FROM CASE POSITIVE POTENTIAL DIRECTLY TO THE PROTECTIVE RELAYS IF THIS IS NOT DESIRED TO MAKE NO CONNECTION TO STUD tl OR 15 LE...

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Page 7: ...GEK 1253F INSTRUCTIONS FAULT DETECTOR RELAY TYPES CHC11A21 AND UP CHC11 B11 AND UP GENERAL ELECTRIC...

Page 8: ...NGS CUP UNIT PFD HINGED ARMATURE UNIT GFD TARGET UNITS Tl AND T2 AUXILIARY RELAY A LOCATION AND MOUNTING CONNECTIONS MAINTENANCE PERIODIC TESTING SERVICING CONTACT CLEANING BEARINGS RECALIBRATION CUP...

Page 9: ...ked up position it is particularly well suited for applications as a fault selector in circuit breaker failure back up schemes In these schemes the CHellA relay is used to detect the failed circuit br...

Page 10: ...time curves for the two units are given under OPERATING CHARACTERISTICS It is important to note that these curves represent maximum times and that dropout time is the time the normally open contacts t...

Page 11: ...CHC11A relay These ranges depend upon the type of fault experienced by the relay See the application section for details of why these pickup ranges vary with the type of fault TYPE OF FAULT PFD Picku...

Page 12: ...6 140 GFD 10 40 10 290 20 80 20 400 The auxiliary telephone relay is continuously rated at the nameplate DC voltage The contact interrupting capabilities are shown in Table III VOLTS 48DC 125DC 250DC...

Page 13: ...t and seal in coils of the protective relay BURDENS The 60 cycle burden per phase of the cup PFD unit with 5 0 amperes flowing in each phase is listed in Table V RANGE 1 4 2 8 4 16 20 80 TABLE V Burde...

Page 14: ...om moisture dust metallic chips Foreign matter collected on the outside of the case may find its way inside when the cover is removed and cause trouble in the operation of the relay Note that an exter...

Page 15: ...e adjustable core in a counterclockwise direction After the top of the hexagonal head core is at the des ired ca1ibration mark the final core adjustment may be made using the test connections shown in...

Page 16: ...e relay calibration SERVICING Contact Cleaning For cleaning fine silver contacts a flexible burnishing tool should be used This consists of a flexible strip of metal with an etCh roughened surface res...

Page 17: ...d if the telephone relay chatters at higher levels of operating currents The holding coil force is controlled by the air gap between the holding coil pole pieces and the armature on the moving assembl...

Page 18: ...follows If the 03 01 combination is the highest pickup then turn the core flat to be in front of the right rear pole If the 02 03 combination is the highest pickup then turn the core flat to be in fr...

Page 19: ...d DC voltage The dropout voltage should be 50 or less of the rated DC voltage b With rated DC voltage appl ied to relay terminals 9 and 10 and the cup unit contacts blocked closed the pickup and dropo...

Page 20: ...it Plus Telephone Unit A of CHC11A Relay Figure 6 0127A9438 Sh 2 1 Maximum Dropout Time Curve for Hinged Armature GFD Figure 7 8025039 Figure 8 0127A9448 1 Figure 9 0178A9066 5 Figure 10 0178A9067 Fig...

Page 21: ...NTACT MOVING CONTACT Figure 1 8035502 GEK 1253E ADJUSTABLE CORE GROUND fAULT DETECTOR HINGED ARMATURE UNIT CONTROL SPRING LOCKING SCREW CLUTCH ADJUSTING SCREW OlDING COIL STOP SCREW PHASE FAULT DETECT...

Page 22: ...1 t GEK 1253E t i t r i _ f r i I i i f j t 1 c r t f _ t m I l j IT t of_ II1 lL tt I l J t i 1 Ij r f tr Li I t tt t t l fm tt p m J o J 1 T 1 Ut i t o t N 1LVd ONOJ3S 3NO JO 11 Nfi d3d I ll 118VdV...

Page 23: ......

Page 24: ...rtl t 4 T t I t i t I ffI t t r l 1 ti j I j I i t I SIS v 8 3lJ J 091 STIJ J 3rill lnOdO O ril Vri t I i 1 t u t t t t T f 1 T 1 i 1 t t t t I t 11 T 1 t 1 1 I If 0 Figure 4 0127A9438 Sh 3 Maximum Dr...

Page 25: ...t t d ttft 1 4 f t o LO N o N LO rl ttttri L H tl I H o SISV8 3lJAJ 09 S3lJAJ 3 ll NI1V 3dO n lxv 4 Figure 5 0127A9438 Sh l Maximum Pickup Time Curve for Hinged Armature GFD Unit Plus Telephone Unit A...

Page 26: ...J IIJt f tlliH i j1 1 11 11 ITI II jll II il j C _ 1 I t t I t f f fit i t I I II I t l j t i I ii I j f I I t 1 I _ I II t j it I lit j I i j I i I I I j j I I I I I I 111I I I I I J t ill r H 13 II...

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Page 28: ...0 A CONNECTIONS FOR SETTING PICKUP OF CUP PFD UNIT 120 VOLTS RATED FREQ 14 15 t 4 A a JUMPER SHORT STUQS C 0 4 6 6 e 4 8 8 CONNECTIONS FOR SETTING PICKUP OF HINGED ARMATURE GFD UNIT Figure 8 0127A9448...

Page 29: ...RELAY GFO HINGED A M UNIT SHORT FINGER VOLTS PFO CUP UNIT CONNECTO OBTAIN EITHER NORMALLY OPEN OR JORMALLY CLOSED CONTACT C HOLDING COIL 50 125 48 REMOVE IF NOT REQUIRED A R3 IKSL PFO GFD 10 RI R2 OH...

Page 30: ...2 4 6 s ITCrl SHO 1 HIGHER VOLTAGF POSITION t TFU FHONE RFLAY CFO YI r r f n W 4 UN IT DFC cur UNIT t CO iNtrT Te OHAIN FITHrR NORMALLY OPFN Or t ALL Y Loc m CCNTACT HC RT FI PFD r 7 9 VCLTS Rl GH lS...

Page 31: ...LT DETECTOR TYPE CHC 52 CIRCUIT BREAKER A AUXILIARY RELAY GFD GROUND FAULT DETECTOR PFD PHASE FAULT DETECTOR T1 T2 TARGETS H C HOLDING COIL WHEN USED NOTE 1 RED LEAD AVAILABLE WHEN CONNECTED STUD 19 C...

Page 32: ...VIEW 1 4 DRILL 6 HOLES f 157MM 176 MM 6MM t I 147MM 1 1203MM 1 5 781 18 000 ct i i L 11 56 CUTOUT I 16 000 293MM i l 406MM L J l L 21s_J L I IIt 21S I i 5MM 5 dM I 5 687 I 144MM PANEL PANEL DRILLING...

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