ABB HCB, Instruction Leaflet

Page 1: ...sts of a rectangular shaped mag netic frame an electromagnet a permanent magnet and an armature with either one or two contacts The poles of the cresent shaped permanent magnet bridge the magnetic frame The magnetic frame consists of three pieces joined in the rear with two brass rods and silver solder These non magnetic joints represent air gaps which are bridged by two adjust able magnetic shunt...

Page 2: ...circuited condition and the relays will operate during external faults Excessive pilot wire shunt capacitance will approach a short circuited con dition and the relays will not operate As shown in Figure 8 the composite sequence filter of each HCB relay receives three phase current from the current transformers of the transmission line The composite sequence filter of the HCB converts the three ph...

Page 3: ...I L 41 971 2H O Fig 7 Type HCB Relay Without Case Front View 3 Courtesy of NationalSwitchgear com ...

Page 4: ...I L 41 971 2H O Fig 2 Type HCB Relay Without Case Rear View 4 Courtesy of NationalSwitchgear com ...

Page 5: ...nom 3 phase fault 4 IS IAI MINIMUM TRIP ALL RELAYS 2 Ri IORI With equal inputs to all relays and zero pilot wire shunt capacitance the relays will operate at their nominal pick up point The minimum trip points will vary somewhat from nominal value depending on the pilot wire constants and the magnitude and phase angle of the various relay input currents For exam ple Figure 6 shows the relay operat...

Page 6: ...UTUAL REACTOR FORMED WIRE RESISTOR R CHASSIS OPERATED SHORTING SWITCH RED HANDLE CURRENT TEST JACK TEST SWITCH NOTE TERMINALS 3 4 6 Q 8 TO BE JUMPERED AT RELAY CASE r 7 J rJ o I I CH CH L _v J TERMINAL FRONT VIE y A B N C Sub 5 629A312 O F 9 3 Internal Schematic of the Type HCB Relay in FT 42 Case Double Trip Circuit For the Single Trip Relay the Circuits Associated with Terminal II are omitted 6 ...

Page 7: ...i t PERMANENT MAGNET t x h rT l XX ARMATuRE ADDITIONAL FLUX PATH Mllfs S N Cl N i MOVINu CONTACT UNBALANCED AIR CAPS BALANCED AIR JAPS 183A062 Fig 5 Polar Unit Permanent Magnet Flux Paths PILOT WIRE REQUIREMENTS TABLE I The relays should not be applied with pilot wire series resistance or shunt capacitance exceeding the following values Insulating Transformer Ratio No of Relays 6 1 4 1 RL Cs RL Cs...

Page 8: ...e of any value the drainage reactor through the KX642 pro tector tube must be connected to remote ground For information with reference to the insula tion and protection equipment refer to I L 41 971 4 A shielded twisted pilot wire pair preferably of 19 AWG or larger is recommended however open wires may be used if they are frequently transposed in areas of exposure to power circuit induction The ...

Page 9: ...5 3 Qj 3 3 5 a M O o 2 r C to 5 3 O o 3 5 w 5 5 o o Co o 6 CD 5 o n Go o 3 H a 5 5 T n Q Co Co X a o 9 J 3 to a Q 5 5 3 X o c 5 3 5 j Q c Co b cj o 9 5 to Q T 3 O 5 c 3 O X N 0 S 5 f 6 Co C 5 r r 5 3 4 I SO k X CO ...

Page 10: ... 001 c dt 3 O w at a m s S c S 6s o X r s HZ r0 Sis N X s 1 U A j o t at 1 4 rrr mi f X X 35 t I 1 4 V Li at at X t X Sl t Sk y rfi S i o a 9 ae Tlx O ficlu UJ twitw f a x OJ u Jc Hi O O u AT X t rt M X W X t m _ O X I o w T rr t JT AC a a r r I X J r SI Sol Si t X sryy i rlj i i k S Si 1 y arr r Y i J 4 r9 l yrt f L _ f 1 r r i Si SI r w i Sis o 4 I oc X I t 7 ac TT rr 11 i 1 1 y L C_ x CD St 6 2...

Page 11: ...t less than INDICATING CONTACTOR SWITCH ICS The only setting required on the ICS is the selec tion of the 0 2 or 2 0 ampere tap setting This selec tion is made by connecting the lead located in front of the tap block to the desired setting by means of the connecting screw T 10IL 8 Ri The available taps are Rx 0 07 0 10 and 0 15 T 4 5 6 8 10 12 and 15 SETTING CALCULATIONS Where sufficient fault cur...

Page 12: ...nd Min 1500 2500 5 T maximum 51 83 3 3P 5 X x R1 600 2 Set in maximum restraint tap for all two terminal lines Set in minimum restraint tap for all three terminal lines The use of maximum restraint on two terminal applications allows the relay to be used for all pilot wires as indicated in Table I The use of minimum restraint on three terminal applications com pensates for the desensitizing effect...

Page 13: ...CH IS SUPPLIED WITH ASSEMBLED CONNECTORS THUS EXTERNAL CGMCCTIONS NEED ONLY BE MADE AT DESIGNATED TERMINALS 6U S V All Sub3 293B225 NOTE 2 TEST SWITCH CONTACTS SHOWN INFORM POSITION Q Fig 9 HCB Relay Test Circuits with S 508A468601 G02 Type W 2 Switch and SW291B318A09 Miiiiammeter 0 5 25 ma T 4 0 6T for three terminal lines C nom G jor 2 terminal lines Inom P P 2 89 R1 289 R0 Rj Restraint tap 13 8...

Page 14: ...ence filter and the operating unit are described under Calibration Check These latter tests are not required unless the relay fails to meet the acceptance tests ADJUSTMENTS AND MAINTENANCE CAUTION Make sure that the neon lamp is in place whenever relay operation is being checked ACCEPTANCE TESTS Indicating Contactor Switch ICS The following tests are recommended when the relay is received from the...

Page 15: ... will check the polar unit calibration and the performance of the rectifiers Connect a variable non inductive resistor across the high voltage terminals of the insulating transformer HI to H4 and connect d c milliammeters in series with the operating and restraining coils of the polar unit by opening these circuits The re straint can be opened at the tap circuit for max and min restraint The opera...

Page 16: ...il it just makes with the moving contact Place a 0 030 to 0 045 feeler gage between the moving contact and the stationary contact on the left hand side of the polar unit Bring up the stationary contact until it just makes with the gage and lock in place For relays with double contacts make sure that both upper and lower contacts make at the same time Polar Unit Calibration Connect the restraint ta...

Page 17: ...o ends since I ic IA with balanced load To Relay Phase A current from C T s to Relay Phase B and C T s shorted to neutral N A B C LEGEND OP TEST SWITCH SYMBOLS 1 6 A Normal Connection All Currents to EXAMPLE N A B C Relay To C T s The pilot wire current will vary depending upon the magnitude of the through load current and the characteristics of the pilot wire See Figures 11 and 12 Since the relay...

Page 18: ...3 3 If the phases are rolled at one end of the line then this will be picked up by test 5 On test 5 neither relay should trip when phase A to neutral current is delivered to each of the two relays with the switching arrangement as shown and discussed However if one or both relays trip then try checking the near relay phase A to neutral current against phase B to neutral current at the far relay Al...

Page 19: ...s are recommended with the pilot wire connected as described under Complete System Test COMPLETE SYSTEM TEST At the time of the initial installation and at sub sequent maintenance periods it is recommended that the following relay system checks be made with the pilot wire connected MINIMUM PICKUP PRECAUTION In making this test with the relay in place on the switchboard it is necessary to connect t...

Page 20: ...telephone lines as a pilot wire channel ENERGY REQUIREMENTS The volt ampere burden of the type HCB relay is practically independent of the pilot wire resistance and of the current tap used The following burdens were measured at a balanced three phase current of 5 amperes RENEWAL PARTS Repair work can be done most satisfactorily at the factory However interchangeable parts can be furnished to users...

Page 21: ... 0 r 0 0 3 6 2 1 POSITIVE SEQUENCE AMPERES 60 CYCLES IN BOTH RELAYS POSITIVE SEQUENCE AMPERES 60 CYCLES IN BOTH RELAYS 619592 619593 Fig 11 Typical Test Output vs input Relay Current in a Two Terminal Line with Zero Pilot Wire Resistance Fig 12 Typical Test Output vs Relay Current in a Two Terminal Line with 2000 Ohm Pilot Wire Resistance With or Without 10 mfd Capacitor 26 2 hi pi_ P p it Sn hut ...

Page 22: ...i4 3 34 1 2 A Id 4 V u fOltt roioo a 1OIA MT6 HOLES 6 4 TOTAL t 1 i 5 4 6 OUTLINE S WIRING DRAWING FOR HCB RELAY INSULATING TRANSFORMER N T S 74 I 64 I I 13C5342 Fig 15 Outline and Drilling Plan of HCB Relay Insulating Transformer Fig 16 Outline and Drilling Plan of the Semi Flush Type Test Milliammeter 22 Courtesy of NationalSwitchgear com ...

Page 23: ...CT REM REM PILOT WIRE TEST PULLOUT LOWSCALE Rd H07 ROT POT All Bit X X NORMAL AI2 BI2 X X REMOTE CIRC v LOCAL Al B1 X X A5 B5 X X A6 B6 X X A7 B7 X DENOTES CONTACT CLOSED PC PULL 0 JT POSITION SPRING RETURN TC NORMAL EACH POSITION WITH SPRING RETURN rRCM CJLL CUT GO Vg PANEL 602 i ll PANEL X X Cll Dll X X CI2 DI2 Cl PI C5 D5 X I X iMstn houM NPS02A054H0I Mod mUSA C6 D6 C7 D7 12 El X X X X FI2 F1 X...

Page 24: ...05 5 375 136 53 4 OI6 f 397 250 6 350 0 1 031 26 19 4 375 1 031 26 19 1 031 26 19 h 1 031 26 19 9 53 5 750 146 05 PANEL A SPACERS FOR THIN PANELS 5 16 18 SCREW FOR THICK PANELS T USE 5 16 18 STUDS n 594 15 09 1 0 25 4 1 5 9 3 I i 2 0 INTERNAL EXTERNAL L 813 TOOTHED WASHERS 46 05 l I 50 8 i i 2i i 10 v 6 8 4 190 32 SCREW TERMINAL NUMBER Vf it tte 53 FOR THICK PANEIS USE 190 32 STUDS 516 13 11 t 1 1...