ABB Modures LZ91 Instructions For Installation And Operation Manual Download

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Summary of Contents for Modures LZ91

Page 1: ...ASEA BROWN BOVERI CH ES 83 92 10 E Edition May 1991 modures Static Distance Relays Types L291 L292 LZ92 1 Instructions for Installation and Operation ...

Page 2: ... reviewed however should in spite of this the reader find an error he is requested to inform us at his earliest convenience The data contained herein purports solely to describe the product and is not a warranty of performance or characteristics It is with the best interests of our customers in mind that we constantly strive to improve our products and keep them abreast of advances in technology T...

Page 3: ... the main processing unit Main processing unit equipped for intertripping schemes Frontplate signals Versions of the input transformer and main processing units CHECKING THE SHIPMENT INSTALLATION AND WIRING Relay location and ambient conditions Checking the wiring C t connections P t connections Auxiliary supply Loading of tripping and signalling contacts Opto coupler inputs COMMISSIONING Checking...

Page 4: ...sequence impedances neutral current factor phase angle of line difference voltage difference between fault voltage and replica impedance voltage sum voltage sum of fault voltage and replica impedance voltage forwards resp reverse replica reactances of the underimpedance starters of LZ92 or LZ92 l reactance of line impedance of zone i positive sequence impedance of line zero sequence impedance of l...

Page 5: ... just voltage controlled overcurrent and are thus capable of detec ting weak faults at times of low generation with fault currents below the maximum load currents at peak periods A full description of their operation is contained in publication CH ES 23 92 lOE Solid state distance relays types LZ91 LZ92 and LZ92 l and their technical data is given in data Sheet CH ES 63 92 10 E 2 MECHANICAL DESIGN...

Page 6: ... pilot wire units ER91 and NR91 option 4 Teach rhese instructions apply to the basic versions of the distance relays i e relays equipped with EW91 and either KI91 KZ91 or KZ91 1 and also an auxiliary supply unit There are two versions of the input transformer and main processing units available which have resulted from further technical develop ment and which are described in these instructions se...

Page 7: ...n KI91 Further information on this can be found in Section 3 9 3 1 Selecting the operating mode 3 1 1 Distance relay LZ91 A choice can be made between two operating modes using miniature switch 1 on PCB 1 of unit KI91 Fig 9 21 Mode A Mode L for solidly grounded systems i e earth faults have to be tripped for ungrounded or impedance grounded systems but only with acyclical phase preference for cros...

Page 8: ...3 1 Positions of the switch sections of switch 1 on PCB 1 of unit KZ91 1 in relation to operating mode 3 2 Setting the starting units 3 2 1 Overcurrent starting 6 The pick up setting of the overcurrent units must be at the very least so high that it cannot be reached by the maximum current in healthy phases The following must be taken into account when calculating this current In the case of doubl...

Page 9: ...arting units the pick up of the neutral current element the reach of the underimpedance elements 3 2 2 l Neutral current earth fault detector The criterion for the highest setting is The earth fault detector must pick up for all earth faults in grounded systems respectively all cross country faults in ungrounded or impedance grounded systems which lie within the set reach of the underimpedance uni...

Page 10: ...2 XBe IR R XA XB replica reactance in forward direction replica reactance in backward direction Criterion for pick up u R j_ The reach for radial lines and the different kinds of faults is phase to phase fault same as setting three phase fault earth fault 2 x setting 13 2 1 k oL x setting k K of the line oL o ABB has a computer programme for checking the relay settings for all kinds of faults and ...

Page 11: ...to pick up The corresponding limit can be determined as follows 1Bmax 90 2 X9 IA 19 max eJ Us j900 XAe 2Is 90 U t A x eJ A 90 U z XBej90o A X eJ B 2I 8 Fig 3 2 Example for XA f XB IA I Bmax balancing current max load current replica voltage 90 I eJ S phase Bmax criterion I_ for pick up u 1 L Ur 90 u6 us 2 X eJ IS A 90 U c us 2 X e 1 IS B ___ Us with A 2 r The limits can be expressed mathematically...

Page 12: ...e starting characteristics 10 If it is impossible to satisfactorily set the reach according to Section 3 2 2 2 then the following procedure should be tried The influence of the balancing currents must be carefully analysed For examining the S phase equations for an R 0 earth fault see Section 3 2 2 2 The relationship XB XA may be changed and the forward reach and the backward reach become differen...

Page 13: ...ng on the network conditions With the aid of computer calculations Dwas found to be 2 30 It is possible to change the angle C from 90 to 108 in which case the characteristic is no longer a circle see Fig 3 4 A y 1 my 8 Fig 3 4 Special characteristic o 90 or 108 m off setting factor XB XA y permissible setting related to a concentric circle 11 ...

Page 14: ... of the geometric sum IA IL since it represents the worst case U min phase to neutral voltage 0 85 UB 0 85 x min rated voltage min The effective reach along the line is dependent on the characteristic angle of the line and the kind of fault see rables 3 6 to 3 8 Line Characteristic angle Circle Circle Lense Lense pL 0 x x B A XB 0 57 XA x x B A XB 0 57 XA 90 1 1 1 1 80 1 1 0 94 0 94 70 1 0 99 0 89...

Page 15: ...e fault Line angle p 0 L 90 80 70 60 50 40 30 20 10 0 __ referred to the reach of a circle about the origin for a phase to phase fault Characteristic Circle Circle Lense Lense XB XA XB 0 57 XA XB XA XB 0 57 XA 1 15 1 11 0 98 0 95 1 15 1 08 1 0 0 94 1 15 1 06 1 0 0 93 1 15 1 04 1 03 0 93 1 15 1 02 1 05 0 95 1 15 1 01 1 08 0 97 1 15 1 0 1 11 0 98 1 15 1 0 1 12 1 0 1 15 1 0 1 16 1 02 1 15 1 0 1 21 1 ...

Page 16: ... U 1 L u but instead by f lJi 108 The change is made with the aid of the soldered link LB3 on PCB 3 see Fig 9 26 The reach for earth faults corresponds to the frontplate setting providing the k factor for the starting units matches that of the line k k L The s Earter k is set using resistor Wi5 on PCB 2 in KZ91 or K l 1 see 0 Fig 9 25 The above changes may be used singly or in conjunction with eac...

Page 17: ...he distance zones In order to calculate the settings the fault impedances and the phase angles of the sections of line to be protected must be known Z3 0 BS a k b2 l i Z2 0 85 a k b1 l b2 Z1 0 85 0 I Zus 1 2 I b1 a I A a b B Fig 3 9 Reaches of the various distance zones a b 2us zone impedances infeed factor which takes into account an intermediate infeed and the consequential apparent increase in ...

Page 18: ...Ls where ZLp ZL p u_ rI rz primary line impedance secondary line impedance main p t ratio main c t ratio impedance ratio The secondary resistance and reactance values are calculated in the same manner Calculating X Before the values m and N can be set on the main processing unit it is necessary to calculal e the feactances X These are not exactly equal to the line reactances XL line impedance Z jX...

Page 19: ...re two possibilities for grading as follows grading in relation to XL grading in relation to RL Grading with XL If the setting R X is greater than 1 e g R X kx according to the table 3 12 is used 2 see Fig 3 11 then the factor Grading with RL If the setting of the polygon is made in relation to the line resistance RL with the arch resistance compensation R X 1 see Section 3 5 then RLi is used inst...

Page 20: ... 3 12 Factors kx and kR in relation to P a 5 System voltage P t ratio C t ratio Primary zone impedances Phase angle of line Relay ratings Reactance line slope u KU KI ZLpl p IN a 60 kV 60 kV I J I 110 v I 3 200 A I 5 A 40 4 Ohm ZLp2 6 Ohm z Lp3 60 5 A UN 110 v 50 545 45 8 Ohm Firstly the secondary reactances must be calculated from the primary values iiI X x and Lp uu The line reactances for the t...

Page 21: ...e i 1 for zone 1 etc The quotient H IN takes the relay ratings into account so that the same setting formula can be used for all the relays The setting range m can be set individually for each of the zones on the frontplate of the KI91 KZ91 respectively KZ91 1 see Table 3 13 and Figures 9 5 to 9 8 Switch m setting I II III 1 ml 0 1 0 5 5 m2 or m 3 0 1 1 10 Table 3 13 Values of the factor m for zon...

Page 22: ...l 100 l IN x l x 1 0 26 Ohm x2 0 4 Ohm x 3 0 54 Ohm Ratings factor H IN 0 2 with H 1 for UN 110 v and I 5 A N 0 26 1 3 rounded to 0 5 see Table 3 13 ml ml 0 2 measuring range 0 4 2 rounded to 1 m2 m2 0 2 m3 0 54 0 2 2 7 rounded to m 3 1 percentage settings Nl 0 2 0 5 100 38 0 26 N2 0 2 1 100 50 0 4 N3 0 2 1 100 37 0 54 Main processor unit settings thumbwheel switch ml II m2 II m3 II thumbwheel swi...

Page 23: ...th the kind of fault because the unit is ohms per phase A given fault resistance RF in the R X plane is as follows earth fault phase to phase fault R RF I 1 I k I R RF I 2 for overhead lines In grounded systems R will be greatest for an earth fault For a given line impedance Z RL j the required arc resistance compensation thus becomes L L R X RL R 3 6 Direction of measurement The direction of meas...

Page 24: ...termines whether all zones measure in the forwards direction position 1 or whether the zone according to the ordering code 1 2 3 or 4 should measure in the reverse direction position 2 This is not fitted in the case of code RO and order number HESG 439 6B6 PCB B The directional sensitivity of the LZ91 and LZ92 is 100 mV U 100 to 130 V The directional sensitivity of the cross polarized LZ92 l isNun...

Page 25: ...are determined by selec ting the factor kt with PCB switch 6b see Fig 9 28 The minimum grading time between different LZ91 respectively LZ92 relays should not be less than the sum of the circuit breaker operating time plus 150 ms The 150 ms are the sum of relay operating time relay reset time a safety margin 3 9 Symbols and significance of the switches on the main processing unit The legend below ...

Page 26: ...ing scheme see Section 3 10 permissive underreaching transfer tripping where fitted 3 10 Main processing unit equipped for intertripping schemes Main processing units with PCB 8 acc to HESG 440 718 see Section 3 12 are equipped as standard with the auxiliary components for operating in intertrip ping schemes On these units either an acceleration scheme zone extension or permissive underreaching tr...

Page 27: ... and PCB 8 of the main processing unit The units and PCB s can of course be distinguished by their part numbers on their rating plates The part numbers of the earlier versions are input trasformer unit EW91 PCB l of EW91 input transformer unit EW91 PCB 1 of EW91 main processing unit KI91 main processing unit KZ91 main processing unit KZ91 l PCB 8 in the main processing unit The part numbers of tod...

Page 28: ... Baden Check that the relay rated current agrees with the c t secondary rated current Check that the relay rated voltage agrees with the p t secondary rated voltage Check that the rated frequency of every unit is the same as the local system frequency Check that the ordering code of each unit given on the rating plate agrees with the one given in the order see Table of Versions and Ordering Codes ...

Page 29: ... and auxiliary supply agree with the those of the relay EW91 DC DC converter and optp coupler unit Check that the same phase is used as R phase in all the stations Check that the phase sequence is correctly R S T 5 3 C t connections Generally the c t s are wound in the sense and have the terminal designations shown in Fig 5 1 With the normal arrangement of K connected towards the busbar and L towa...

Page 30: ... be carefully checked I he terminals must be connected in accordance with the rated current as follows I 1 A IN 5 A N common Al R A4 S A7 T A2 R A5 S A8 T A3 R A6 S A9 T Input transformer units with the part number HESG 440 754 resp HESG 441 721 only have terminals for the rated current as ordered 5 4 P t connections Should there be doubt as to the sense of the p t windings then their polarity can...

Page 31: ...Data Sheet to ensure that the ratings of the contacts are adequate for the duty 5 7 Opto coupler inputs Check the voltage against the order code and the polarity of all opto coupler inputs opto coupler unit Mll5 inputs Al2 and B12 of the input transformer unit EW91 and any other opto couplers in interfacing units If the opto coup ler input of the EW91 is used to block the relay by an auxiliary N O...

Page 32: ...ly permissible to switch on the auxiliary supply after all the units have been inserted 6 3 rest points on the unit EW91 30 The most important signals are available for measurement at ten respectively twelve sockets see Section 3 12 on the front of the input transformer unit EW91 l hese signal outputs are short circuit proof but on no account should they be used for injecting singals The inner dia...

Page 33: ...in processing unit with PCB 8 according to HESG 440 718 6 4 Checking load voltages and currents Load voltages and currents can be measured at the sockets on the front of the unit EW91 as follows First switch on the auxiliary d c supply The phase to neutral voltages are reduced by a factor of 15 for rated vol tages between 100 and 130 V code Ul and a factor of 30 for rated voltages between 200 and ...

Page 34: ...ted Starter Signals Voltage button fault used for 1 meas A R RO R R RO corres s so s E so ponds to T TO T T TO position 1 RS RS RS RS RS switch 1 ST ST ST ST ST KI91 TR TR TR TR TR RST RST RST RST RST R RS R R RS corres E rSO StO E E SE ponds to T ST T T rs position 2 RE RSO RsO Rto RE RE RE switch 1 rE STO sTO TrO l E TE TE KI91 TR TR RST TR TR TR RTE RSTE RTE RTE RTE RE 1 Small letters more dist...

Page 35: ...T RST RST RST RT RSTE RSTE RSTE RSTE RT 6 R RT R R RT s SR s s SR corres T TS T T TS ponds to E E E ext position 2 RE RsO tRO RE RE RE switch 1 SE StO rSO SE SE SE KZ91 TE sTO TrO TE TE TE RS RS RS RS SR ST ST ST ST TS TR TR TR TR RT RSE RSE RSE RSE RE SE 1 STE STE STE STE TE TRE TRE TRE TRE RE RST RST RST RST RT RSTE RSTE RSTE RSTE RT 1 Letters in brackets cyclical phase preference 2 Small letter...

Page 36: ...ST RT ST RSTE RSTE RSTE RSTE RT ST R before R RT R R RT S l T before s SR s s SR TR s T I S T T TS RS acyclical E E E ext RE RsO tRO RE RE RE ST switch 1 SE StO rSO SE SE SE TR KZ91 l TE s l O TrO TE TE TE RS RS RS RS RS SR rR 1 OFF ST ST ST ST TS RS 2 OFF TR rR TR TR RT ST 3 ON RSE RSE RSE RSE RE S r 4 OFF STE STE STE STE rE RS TRE TRE TRE TRE RE ST RS l RST RST RST RT S r RSTE RSTE RSTE RSTE RT ...

Page 37: ...S T T acyclical E E E ext RE RsO tRO RE RE SE StO rso SE SE switch 1 TE sTO TrO TE TE KZ91 l RS RS RS RS ST ST ST ST 1 ON TR TR TR TR 2 ON RSE RSE RSE RSE 3 ON STE STE STE STE 4 ON TRE TRE TRE TRE RST RST RST RST RSTE RSTE RSTE RSTE 1 Small letters more distant cross country fault 2 Directional measurement same current as distance meas Table 6 3 Continuation Distance Direction measured determined ...

Page 38: ...lowing in the forwards direction and block when the energy direction is reversed by operating switch Sb part number HESG 439 686 or the frontplate switch I part number HESG 440 718 or vice versa The ability of the relay to pick up and block must be tested in this way for all kinds of faults Withdrawing a relay with non directional fourth zone can be avoided by setting the thumbwheel switch N of th...

Page 39: ...n the test connector for enabling the signal outputs for ancillary units if necessary A sample test report for testing with a test set can be found in the appendi cies 6 7 Instructions for modifying relay operation Normally the desired relay operation is defined by the ordering code and supplied from the works with the corresponding connections etc already made However should changes become necess...

Page 40: ...mer units with oart number HESG 440 754 resp 441 721 and main processing unit with PCB 8 ace to HESG 440 718 Since the simple tests above can be carried out at relatively short intervals comprehensive testing with a test set is only necessary at two yearly intervals But quantitive testing is essential after this period regardless of whether the relay is equipped with a test socket XX91 or not Wher...

Page 41: ... the DC DC converter Check the correctness of the signals at the sockets on the front of the EW91 see Section 6 3 If not check the relay wiring Localise a defect by withdrawing the KI or KZ unit and rechecking the signals at the sockets on the EW91 If they are in order a defective main processing unit is to be suspected Replace the defective unit Should it not be possible to locate and clear a def...

Page 42: ... 079 Rll R14 Main processing unit KZ91 Part No HESG 440 080 Rll R14 R22 Main processing unit KZ91 1 Part No HESG 440 342 Rll R12 R22 Wiring diagram Features of plug in unit EW91 Features of plug in unit KI91 Features of plug in unit KZ91 Features of plug in unit KZ91 1 PCB 1 in EW91 HESG 438 048 PCB 1 in EW91 HESG 440 752 PCB 1 in KI91 HESG 439 679 PCB 1 in KZ91 HESG 439 689 PCB 1 in KZ91 1 HESG 4...

Page 43: ...Fig 9 1 Distance relay LZ91 with plug in units KI9I EW9l and NF92 Fig 9 2 Distance relay LZ92 With plug in units KZ91 EW9l and NF92 41 ...

Page 44: ...Fig 9 3 Input transformer unit EW91 Part No HESG 438 454 photo 185 680 Fig 9 4 Input transformer unit EW91 Part No HESG 440 754 photo 214 280 42 ...

Page 45: ...Fig 9 5 Main processing unit KI91 Part No HESG 440 079 Rl R4 photo 188 349 Fig 9 6 Main processing unit KI91 Part No HESG 440 079 Rll Rl4 photo 214 281 43 ...

Page 46: ...Fig 9 7 Main processing unit KZ91 Part No HESG 440 080 Rll Rl4 photo 188 350 Fig 9 8 Main processing unit KZ91 1 Part No HESG 440 342 Rll Rl2 R22 photo 214 279 44 ...

Page 47: ...06 186 I 1 aux supply from station battery 2 tripping contacts 3 signalling contacts 3 1 operating signals 3 2 relay defect 8 opto coupler inputs 11 circuit breaker 11 1 circuit breaker aux contact 11 3 tripping coil 12 c t s 13 p t s 14 m c b with aux contact Fig 9 9 Wiring diagram 45 ...

Page 48: ... and R44 R45 R46 and Ei F5 F6 Rated frequency 50 Hz 60 Hz HESG 440 754 resp HESG 441 721 Wl5 Wl6 W17 W18 and Ei K O k amplitude K l k 0 amplitude and phase angle HESG 438 454 Kl w th tripping unit KO without tripping unit r _ _ Kll k amplitude and phase angle HESG 440 754 resp HESG 441 721 0 EO to ES Opto coupler input voltage HESG 43S 454 R25 R26 i Ell to E13 Opto coupler input voltage HESG 440 7...

Page 49: ...G 440 718 LB17 XS Reactance inclination 50 PCB 7 HESG 439 685 Ei M85 x Reactance inclination i 5 0 PCB 7 HESG 439 685 Ei M85 EO Zone 4 less reactance PCB LBll El Zone 4 plus reactance 7 HESG 439 685 LBll E 0 Zone 4 less resistance LB12 E 1 Zone 4 plus resistance LB12 FAl Frontplate signals operational rCB 2 HESG 439 681 LB13 FA2 Frontplate signals non opera PCB 8 HESG 439 686 ot LB15 tional PCB 8 ...

Page 50: ...tion zone 2 6 HESG 439 684 LB9 R30 Reverse direction zone 3 R40 Reverse direction zone 4 R50 Reverse direction external PCB 6 LB9 and PCB 8 LB17 HESG 439 686 or PCB 8 HESG 440 718 LB17 XS Reactance inclination 50 PCB 7 HESG 439 685 Ei M85 x Reactance inclination r so PCB 7 HESG 439 685 Ei M85 EO Zone 4 less reactance PCB LBll El Zone 4 plus reactance 7 HESG 439 685 LB11 E O Zone 4 less resistance ...

Page 51: ...direction zone 4 R51 Reverse direction external PCB 6 LB9 and PCB 8 LB17 HESG 439 686 or PCB 8 HESG 440 718 LB17 XS Reactance inclination 5 PCB 7 HESG 439 685 Ei M85 x Reactance inclination f 50 PCB 7 HESG 439 685 Ei M85 EO Zone 4 less reactance PCB LBll El Zone 4 plus reactance 7 HESG 439 685 LBll E O Zone 4 less resistance LB12 E 1 Zone 4 plus resistance LB12 FAl Frontplate signals operational P...

Page 52: ...0 Hz code F5 R 44 R 45 R 46 5 6 kOhm R 45 Rated frequency 60 Hz code F6 R 44 R 45 R 46 3 9 kOhm R 46 W61 direct opto coupler input code El E4 Q 0 o o inverted opto coupler input code E5 ES Q o o 0 R 25 opto coupler input R 26 voltage Code El E5 E2 E6 E3 E7 E4 ES EO Fig 9 19 PCB 1 in EW91 HESG 43S 04S 50 Voltage 24 v 4S 60 v 110 125 v 220 250 v R 25 R 26 1 5 k 2 w 3 3 k 2 w 6 S k 2 w 18 k 2 w CD an...

Page 53: ...opto coupler output without code Q o o o R144 opto coupler Code Voltage R144 R146 input voltage R146 Ell 20 30 v 1 k 2W 4 7k E12 36 75 v 2 7k 2W 27 k E13 82 312 v 15 k 2W 82 k PCB 1 unit EW9la The arrangements o f the elements on this HESG 441 585 PCB have been slightly modified The above mentioned jumpers and resistors are in the same spot as in the EW91 Fig 9 20 PCB 1 in EW91 HESG 440 752 2W 2W ...

Page 54: ...top E3 1 Switch 1 position 1 for mode position 2 for mode 6 Fig 9 21 PCB 1 in KI91 HESG 439 679 80 52 ...

Page 55: ...2 for mode 6 LB7 Acycl RTS selection logic standard Cycl RTSR selection logic Acycl TRS selection logic Cycl TRST selection logic Fig 9 22 PCB 1 in KZ91 HESG 439 689 90 code LO code Ll code L2 code L3 o o o HESG o o 0 o o o HESG o o 0 439 689 439 690 53 ...

Page 56: ...op 1 X150 Xl51 ili X150 X151 Switch 1 for selecting operating mode settings see Table 3 1 Rated frequency 50 Hz code FS o o o Rated frequency 60 Hz code F6 o o o Fig 9 23 PCB 1 in KZ91 1 HESG 440 363 54 ...

Page 57: ...rational code FAl o o Frontplate signals non operational code FA2 o o Ii IPh R 65 R 59 R 67 R 61 R 66 R 60 1 00 00 00 00 ro OJ 0 76 150k 00 150k 00 150k 00 0 5 ro 47k 00 47k ro 47k 0 33 47k 47k 47k 47k 47k 47k standard Fig 9 24 PCB 2 in KI91 HESG 439 681 55 ...

Page 58: ... 855 560 1 16 1 08 560 0 66 0 83 0 470 1 20 1 10 470 0 61 0 805 p 390 1 24 1 12 390 0 55 o 775 e 330 1 28 1 14 330 0 48 0 74 n 270 1 34 1 17 270 0 40 0 70 220 1 42 1 21 220 0 31 0 655 180 1 52 1 26 180 0 23 0 615 150 1 62 1 31 150 0 12 0 56 120 1 78 1 39 120 0 03 0 515 co 100 1 94 1 47 100 Fig 9 25 PCB 2 in KZ91 and KZ91 l HESG 439 691 56 k 1 0 IR2 l k k 0 I 0 2 co 2 14 1 57 2 38 1 69 2 67 1 835 3...

Page 59: ...t origin code Z 1 R 51 47 Starting char off set code Z xy R 51 see 0 26 0 39 0 57 0 69 0 84 1 2 14 180 120 82 68 56 47 22 Resistor rating 0 25 W LB14 Frontplate signals operational code FAl o o Frontplate signals non operational code FA2 o o Fig 9 26 PCB 3 in KZ91 and KZ91 1 HESG 439 692 k Wi4 o o 0 0 table 3 13 15 o o J 57 ...

Page 60: ...8 2 5 62 3 1 25 18 2 0 825 3 25 1 3 15 0 825 3 5 1 35 12 1 1 5 3 75 1 4 10 1 82 4 1 45 8 25 2 21 4 25 1 5 4 75 4 75 4 5 1 6 5 62 2 21 4 75 1 7 3 92 2 74 5 1 8 5 62 0 332 1 9 4 75 0 562 standard note R 44 is always 4 75 kOhm Fig 9 27 PCB 5 in KI91 KZ91 KZ91 l HESG 439 683 58 kOhm 1 4 75 3 32 2 21 1 5 1 82 1 82 1 82 1 5 1 5 1 1 21 1 21 1 R 43 kOhm 1 0 0 475 1 1 21 0 562 0 274 0 0825 0 221 0 0825 0 4...

Page 61: ...position 2 tl zone 1 operational 6b Switch 6b position 1 zone 3 timer multiplier kt 0 1 position 2 zone 3 timer multiplier kt 1 LBl Rated frequency 50 Hz code F5 soldered link LBl closed Rated frequency 60 Hz code F6 soldered link BLl open LB9 One zone with reversed direction see table code W12 Wl3 W14 W15 R2 o o 0 0 0 0 0 0 Rl 0 0 o o 0 0 0 0 R3 0 0 0 0 o o 0 0 R4 0 0 0 0 0 0 o o R5 0 0 0 0 0 0 0...

Page 62: ...eristic code EO o o Zone 4 plus reactance characteristic code El o o Zone 4 less resistance characteristic code EO o o Zone 4 plus resistance characteristic code El o o Reference voltage Reference voltage fault voltage without code o o o for KI91 KZ91 fault voltage without code o o o for KZ91 l Fig 9 29 PCB 7 in KI91 KZ91 KZ91 1 HESG 439 685 60 ...

Page 63: ...diagram LB15 LB16 LB17 Frontplate signals operational code FAl o o Frontplate signals non operational With defect signalling during testing via test socket code VlO Without defect signalling during testing via test socket code Vll code FA2 o o o o o Reversal of direction by external signal code RS The position of LB17 is given for codes Rl to R4 and correspondingly soldered at the works o Fig 9 30...

Page 64: ...Bb o o o o o o o o o o o o LB15 LB20 see Fig 9 32 direction as set on frontplate switch I direction as set on frontplate switch I but one zone reversed overreach acceleration scheme permissive underreaching transfer tripping providing the scheme is wired Fig 9 31 PCB 8 in KI91 KZ91 KZ91 l HESG 440 718 62 ...

Page 65: ...inks 1 to 4 open no intentional zone 1 One or more of the soldered links 1 to 4 closed Zone l delayed by the sum of the weightings times system period TN link link link link LB19 Signals maintained until reset Signals only maintained if relay trips code FAl code FA2 code VlO code Vll code RS delay the power 1 1 x TN 2 2 x TN 3 4 x TN 4 8 x TN LB20 Directional measurement taken into account when op...

Page 66: ...ating time t s Test impedance 1st zone 2nd zone 3rd zone 4th zone Overreach 1 0 Q Ph1 specified measured specified measured specified measured specified measured specified measured R 0 T S Grading table dated lPh x 0 1 IN A t1 s J t2 s t3 s t4 s J PCB settings 1 Mode 1 J D 1 2 D Selection logic 6a 1 Y 0 2 t1 0 6b 1 kt 0 1 0 2 kt 1 D 1 1 t 4 __ o 2 t4 o o 2 Ozone Ba 1 Bb t Bb 1 I 0 1 2 I D at HESG ...

Page 67: ..._ D 2 D Selection logic R 0 1 Mode LZ92 1 Switch s 0 INr 1 1 2 IHI i lrfl It dl I 6a 1 J1 o 2 t D T 0 6b 1 kt 0 1 D 2 kt 1 D 7 1 t4 D z t4 D R T 8a 8b D 2 t D Zone 1 S R 8b 1 _I DI 2 1 D T S bzw ab HESG 4407D Print 8 Bi 1 I 1 2 t D Zone Db 1 J 0 2 PUTT D Time steps Operating time t s Test impedance 1st zone 2nd zone 3rd zone 4th zone Overreach Impedance starting Circle D 1 lense D without off set ...

Page 68: ... ...

Page 69: ...ST Technical Publications Group Haselstrasse 16 122 CH 5401 Baden Have you discovered any mistakes in this publication If so please note here the pages sections etc Do you find the publication readily understandable and logically arranged Can you make any suggestions to improve it Is the information content sufficient for the purpose of the publication If not what is missing and where should it be...

Page 70: ... ...

Page 71: ... of all unusual behaviour which does not appear to be covered by these operating instructions It is pointed out that all local regulations must be observed when connecting and commissioning this equipment in addition to these operating instructions Any work that has to be carried out inside the equipment such as changing soldered links or fitting or removing resistors may only be performed by corr...

Page 72: ...rasse 16 122 Phone 056 75 77 44 Fax 056 22 67 18 Printed in Switzerland 9105 800 0 ABB Relays AB S 72171 Vasteras Sweden Phone 46 21 32 13 00 Fax 46 21 14 6918 ABB Power T D Co Relays Coral Springs Fla 33065 USA Phone 1 305 752 6700 Fax 1 305 752 6700 ext 2283 ...

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