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GE CEYG51A, Инструкция по эксплуатации, Страница: 20 / 40

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Содержание CEYG51A

Страница 1: ...GEK 26423D INSTRUCTIONS GROUND DISTANCE RELAY TYPE CEYG51A GE Protection and Control 205 Great Valley Parkway Maivern PA 19355 1337 ...

Страница 2: ...cks 11 Electrical Checks 11 PORTABLE TEST EQUIPMENT 11 SERVICING 14 Restraint Circuit Angle Adjustment 15 Directional Characteristic 15 Maximum Torque Angle 15 Pickup 15 Clutch Adjustment 15 RENEWAL PARTS 16 APPENDIX I MINIMUM PERMISSIBLE REACH SETTING FOR THE CEYG51A 17 No Zero Sequence Current Compensation 17 With Zero Sequence Current Compensation 18 APPENDIX II MAXIMUM PERMISSIBLE REACH SETTIN...

Страница 3: ...ack to back are required at each terminal These relays operate in conjunction with a carrier channel to provide high speed protection against all single phase to ground faults in the protected line section One relay acts to Stop carrier and trip for internal faults while the other initiates carrier blocking on external faults if zero sequence current compensation is used on the carrier stopping an...

Страница 4: ...IA relays covered by these instructions are available with potential circuits rated for operation on wye wye connected potential transformers which supply secondary voltage of 120 volts phase to phase Current coil ratings and ohmic ranges are as tabulated below BASIC MIN RANGE CONTIN ONE SEC OHMIC REACH OHMIC REACH CURRENT RATING CUR RATING 0 N OHMS 0 N OHMS AMPERES AMPERES 1 2 3 1 30 5 225 0 5 1 ...

Страница 5: ...CEYG51A relay may be represented on the R X impedance diagram as shown in Fig 7 It should be noted that these steady state characteristics are for rather specific fault conditions described below The inho unit has a circular characteristic which passes through the origin of the R X diagram The diameter passing through the origin defines the angle of maximum torque of the unit which occurs when lin...

Страница 6: ...ture polarizing potential will remain quite high with the result that the relay will operate at considerably less current than tabulated For example with a one percent restraint voltage and 120 volts polarizing the unit will operate with less than 1 ampere operating current for the 3 ohm minimum reach setting OPERATING TIME For typical operating time characteristics see Figure 13A and 138 BURDEN T...

Страница 7: ...o sequence current compensation is t Qi used if Co is equal to or less than C no further evaluation need be made See Appendix II equations ha hib and tIc b When zero sequence current compensation is used if 3K 1 Co is equal to or less than C no further evaluation need be made See Appendix III equations lIla hlIb and Ihic c If neither a nor b above is applicable evaluate the equations of either App...

Страница 8: ...For the three ohm basic reach settings K 300 Thus for this basic tap setting the restraint tap T should be no larger than T 0 204K 61 percent Consider now a ground fault at Fl immediately behind the relay Appendix H indicates the approach to calculate the maximum safe reach setting to eliminate the possibility of an incorrect operation on single or double phase to ground faults at this location As...

Страница 9: ...aximum safe reach setting when using zero sequence current compensation CONSTRUCTION The Type CEYG51A relay consists of three inho type 4 pole induction cylinder units Each unit has an associated tapped autotransformer for controlling reach and adjustable resistors in the polarizing and restraint circuits for adjustment of angle and basic minimum ohmic reach Figures 1 and 2 show construc tion deta...

Страница 10: ...n the seal in contacts With the cover fastened securely in place check that the target resets positively when the reset button at the 5ottom of the cover is operated 7 Check the location of the contact brushes on the cradle and case blocks against the internal connection diagram for the relay Be sure that the shorting bars are in the proper locations on the case blocks and that the long and short ...

Страница 11: ...ermine that the ohmic reach of each unit is witin 14 percent of the minimum reach as given on the nameplate These checks should be made with the E taps set at 100 percent and the voltage adjusted for the value shown in Table IV for the specific ohmic range and with the relay connected as shown in Figure 10 Set the phase shifter so that current leads voltage by 30 degrees check that the current req...

Страница 12: ...completely deenergized 2 Examine the contact surfaces for signs of tarnishing or corrosion Fine silver contacts should be cleaned with a burnishing tool which consists of a flexible strip of metal with an etched roughened surface Burnishing tools designed specially for cleaning relay contacts can be obtained from the factory Do not use knives files or abrasive paper or cloth of any kind to clean r...

Страница 13: ...it to just close its contacts is given by equation 12 Z cos 60 0 Tap 100 12 L where ZMU Ohmic reach of the mho unit See Equation 5 in CHARACTERISTICS section ZL Test impedance in ohms 0 Angle of test impedance The portable test reactor Cat No 6054975 and test resistor Cat No 6158546 are normally sold as a set identified by a calibration curve number shown on the nameplate The test resistor taps ha...

Страница 14: ... angle A similar approach can then be taken using a 3Q0 combination of reactor resistor taps If a four wire test source is not available the mho unit characteristic can then be checked using a three phase three wire test source and the test circuit of Fig 17 Following the same procedure outlined above for the four wire test circuit the only difference in results if a 30 shif in the mho characteris...

Страница 15: ...t fails to perform properly at high current levels as outline under ACCEPTANCE TESTS the inner stator or core must be readjusted This can be accomplished by means of rotating the core slightly clockwise or counterclockwise as required to make sure that the contacts close and remain closed within specified currents with the special core adjusting wrench Cat No 0178A9455 Pt 1 See Fig 12 MAXIMUM TORQ...

Страница 16: ...ck to enable the prompt replacerrient of any that are worn broken or damaged When ordering renewal parts address the nearest Sales Office of the General Electric Company specify quantity required name of the part wanted arid give the General Electric Requisition number on which the relay was furnished 16 ...

Страница 17: ...mpensation is NOT used the effective impedance as seen by the relay on the faulted phase for a single phase to ground fault at the far end of the line is z Z 0 Z 1 C 0 ZI 1 2C C I o a Ia where Positive sequence impedance of the protected line Z Zero sequence impedance of the protected line z m Total zero sequence mutual impedance between protected line and parallel line I Zero sequence current in ...

Страница 18: ...ies to I as well as WITH ZERO SEQUENCE CURRENT COMPENSATION When zero sequence current compensation is used the effective impedance as seen by the relay on the faulted pase for a single phase to ground fault at the far end of the line becomes Z I 3K 10 where xo Xl K 3X 1 The per unit ritIo of zero sequence current to be used for compensation To insure that the relay on the faulted phase picks up f...

Страница 19: ...tting of the units to prevent them from picking up on reverse double phase to ground faults Equation JIc gives this limit K C C T 3Z 0 Cos 9 60 lic where K Design Constant 100 for 1 0 basic minimum tap 200 for 2 0 basic minimum tap 300 for 3 0 basic minimum tap 9 The angle of the system zero sequence impedance Z 0 All other terms are defined above Note that C 0 and C in equation tIc have the same ...

Страница 20: ... in the non trip direction K L 3K 1 C C 1 T Cos 9 60 IlIc 3 where Xo Xl K 3X The per unt ratio of zero sequence current to be used for 1 compensation All other terms are as defined in Appendix II If the minimum permissible tap setting includiny suitable margins as determined from equations THe IIb or Ilic above are positive and greater than the maximum permissible tap setting as determined from eq...

Страница 21: ...P11 P 21 GEK 26423 RESTRAINT TAP BLOCK Ml UNIT P12 R 22 P13 P23 M2 UNIT FIG 1 8039015 RELAY TYPE CEYGS1A OUT OF CASE 3 4 FRONT VIEW n TARGET SEAL IN UNIT M3 UNIT 21 ...

Страница 22: ...GEK 2642 3 FIG 2 8043301 RELAY TYPE CEYG51A OUT OF CASE 3 4 REAR VIEW 22 ...

Страница 23: ...GE K 2 6423 M2 M3 6 8 Mi TOP UN T M2 VIDDLE UN IT SHORT I NOER 3 SOTTOM U T FIG 3 0178A9106 1 INTERNAL CONNECTIONS DIAGRAM FOR THE CEYG51A RELAY 15 17 11 13 19 Ml B I 2 4 23 ...

Страница 24: ... A 9 10 05 THE CEY 1L CEYG 201 FOR CAPCTIER TNA 4SEERPED TRIPPING ON STARTING DIRECTI AL AUXILIARIES TABULATION Of CVICES DEVICE INTERNAL ITLINE Lco5i 0178A9106 O17SA73 7266G 2 367M26G 2 0207A5 465 I CFPGIE4 O127S944 1 6209272 x I 46A891 c4XbA6cThfrN SS3 I8 7 ARE CArE I SIDT ELAY NO EXT JIJPES 1 D_LD RE MArE EXT AUX USING CURRENT PO ARI2ATI3N USE flE CCCCS S OA N EN I OJPRENT POLAPIZA T I O I IS N...

Страница 25: ...GEK 26 423 FIG 5 O2O8A5544 O TYPICAL TRANSMISSION SYSTEM 138KV 138KV 30 MILES 1 F I2MILES H F2 J Ft 36 MILES 138KV 25 ...

Страница 26: ...GEK 26423 BACK K1 0 0 0 FIG 6 0208A5545 O TYPICAL SCHEMATIC OF MHO UNIT LL c E 23 L I C J T L_JUL FRONT To E IN 0 26 ...

Страница 27: ...GEK 264 3 R SHADED AREA IS TRIPPING AREA FIG 7 0208A5543 O TYPICAL R X DIAGRAM OF MHO UNIT x 0 60 M J UNIT 27 ...

Страница 28: ...EK 2G423 B Ec FIG 8 0208A5541 O TYPICAL RELATION OF I E 3 AND E AN A C 1 A 28 ...

Страница 29: ...GEK 26423 Ml Ml M2 M2 M3 M 3 15 15 16 16 18 18 18 18 18 18 16 16 17 17 15 15 17 17 15 15 16 16 4 10 6 10 8 10 3 95 9 7 9 POLARITY TEST FIG 9 0127A9562 1 POLARITY TEST 3 2 1 UNIT 17 17 67 VOLTS 29 ...

Страница 30: ...GEK 2642 3 FIG 10 0195A4970 O Sh 4 TYPICAL TEST CONNECTIONS DIAGRAM 03 2 S A ER B C FIGURE 7 D 30 ...

Страница 31: ...8025039 CROSS SECTION DRAWOUT CASE SHOWING POISITION OF AUXILIARY BRUSH CONNECTING BLOCK 1 L AUXILIARY BRUSH SHORTING BAR NOTE AFTER ENGAGING AUXILIARY BRUSH CONNECTING PLUG TRAVELS 1 4 INCH BEFORE ENGAGING THE MAIN BRUSH ON THE TERMINAL BLOCK 31 ...

Страница 32: ...GEK 26423 A INNER SIATOR OR CORE B MAGNET A COILS C WAVE WASHERS 0 OCTAGON NOT OR CORE ADJUSTMENT E FLAT WASHIER F CORE HOLD DOWN NUT HEXAGON FIG 12 0208A3583 O CORE ADJUSTMFNT D 32 ...

Страница 33: ...2 0 z Lii F 1 5 1 0 0 5 3n TAP 2 R TAP I JLTAP AMPERES FIG 13A 0273A9031 O TYPICAL TIME CURRENT CHARACTERISTIC WHEN TYPE CEYG51A IS USED WITH ZERO PERCENT COMPENSATION 4 0 5 10 15 ac 0 15 15 22 5 30 37 5 45 0 15 30 45 60 75 90 33 ...

Страница 34: ... 5 30 37 5 45 60 75 90 FIG 138 o273Ago3o o TYPICAL TIME CURRENT CHARAc TERISTIC WHEN TYPE CEYG5IA IS USED WITH 50 PERCENT COMPENSATION GEK 26423 4 0 3 5 1 0 0 5 3ftTAP 0 2 fl TAP 0 IJLTAP 0 5 I0 7 5 15 IS 15 30 20 25 45 AMPERES 30 34 ...

Страница 35: ...Lr w J a c w 1 5 21L TAP C IJLTP 0 3fTAP 0 5 10 15 20 25 7 5 37 5 5 5 30 22 5 3D 45 AMPERES 60 3D 45 9 75 FIG 13C o273A9o2g o TYPICAL TIME CURRENT CHARACTERISTIC WHEN TYPE CEYG51A IS USED WITH 100 PERCENT COMPENSATION 35 ...

Страница 36: ... n CD CD c fl c c c c c CD c j 0 c C C I U CD NJ CD NJ TITLE EVALUATION OF K 5 AND A VS ZQ Z 1 F M F CEYG5IA ...

Страница 37: ...PANEL DRILLING DIMENSIONS FOR THE CEYG51A RELAY SEMI FLUSH MiD PANEL LOCATION b I G8MM SURFACE MI 16 16 STUDS URFACE MTCj 2917151311 0QQQ 000Q 20 18 16 14 12 6 10 32 X 3 8 MID SCREWS GLASS STUD NUMBERING 1 125 29MM 9753t 0QOQ 0000o 10 S 6 4 2 _I_ 4 BACK VIEW CUTOUTS MAY REPLACE DRILLED 1 IOLES CU TbU T 5MM 1 33MM 500 12MM TYPICAL CSE M VIEW SHOWING ASSEMBLY OF HARDWARE FOR SURFACE MTG ON STEEL PAN...

Страница 38: ... SCHEMATIC DIAGRAM OF TEST CIRCUITS FOR CEYG51A RELAYS A B OA 1 20V 30 ØB LOAD BOX 3 3 WIRE TEST CIRCUIT STARTING UNIT A TA f F H G COMPENSATING WINDING C D CENTER TAPPED 5 KVA AUTO TRANSFORMER 5 VARIAC RATED 20 AMPERES 3 4 WIRE TEST CIRCUIT N 10 D F 1 E H G COMPENSATING WOG 38 ...

Страница 39: ...OR TOP UNIT SEE TABLE VII FOR OTHER UNITS CENTER TAPPED S KVA AUTO TPANSFOR1ER VAPIAC RATED AT 20 AMPERES FIG 17 0227A7004 2 TEST CIRCUIT FOR FIELD TESTING THE STARTING UNITS OF THE CEYG51A RELAY USING A 3 PHASE 3 WIRE TEST SOURCE 0 0 R 39 ...

Страница 40: ...ST CIRCUIT FOR FIELD TESTING THE STARTING UNITS A 3 PHASE 4 WIRE TEST SOURCE OF THE CEYGS1A RELAY USING ØB øC CONNECTIONS SHOWN FOR TOP UNIT CHECK TABLE VI FOR MIDDLE AND BOTTOM UNITS 8 93 600 GENERAL ELECTRIC PROTECTION AND CONTROL BUSINESS DEPT MALVERN PA 19355 ...

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