GE CEY53A, Instructions Manual

Page 1: ...INSTRUCTIONS GEK 7351A MHO DISTANCE RELAY FOR SHUNT REACTOR PROTECTION TYPE CEY53A GENERAL w ELECTRIC Courtesy of NationalSwitchgear com ...

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Page 3: ...S 6 7 7 7 8 8 8 8 9 9 9 9 BURDENS 9 9 CURRENT CIRCUITS POTENTIAL CIRCUITS MECHANICAL ADJUSTMENTS SERVICING TESTING WITH THE X R EQUIPMENT PORTABLE TEST EQUIPMENT ELECTRICAL TESTS DRAWOUT RELAYS GENERAL POWER REQUIREMENTS GENERAL RECEIVING HANDLING AND STORAGE PERIODIC CHECKS AND ROUTINE MAINTENANCE CONTACT CLEANING RENEWAL PARTS INSTALLATION PROCEDURE LOCATION MOUNTING VISUAL INSPECTION MECHANICAL...

Page 4: ...GEK 7351 Photos Not Available At This Time Photos Not Available At This Time 4 Courtesy of NationalSwitchgear com ...

Page 5: ... The apparent reduction of reactance at elevated voltages must be considered in setting the relay so as to avoid misoperation of the reactor protection on the line overvoltage conditions expected When the transmission line section and its connected reactor are energized at the zero point in the voltage wave the reactor inrush current produced will have maximum offset and will saturate the reactor ...

Page 6: ...he nameplate value For example i f the nameplate taps are 0 75 1 5 3 connecting the two current coils in series will change these tap values to 1 5 3 6 In this case select the 6 ohm tap The percent restraint tap T is determined by the following rel ation j _ 100 TB cos 9 0 Z where 9 reactor angle assume 90 degrees 0 maximum torque angle of relay 75 degrees Z desired reach at angle 9 100 6 cos 15 T...

Page 7: ... of the cover assembly The relay case is suitable for either semi flush or surface mounting on all panels up to 2 inches thick and appropriate hardware is available However panel thickness must be indicated on the relay order to insure that proper hardware will be included Outline and panel drilling is shown in Fig 8 A separate testing plug can be inserted in place of the connecting plug to test t...

Page 8: ... reach can be increased up to 10 1 by reducing the percentage of the terminal voltage supplied to the taps on the auto transformer The circle will always pass through the origin and have a diameter along the 75 degree impedance line equal to the ohmic reach of the unit as expressed by the following equation Input Tap Z min Unit Tap Setting Ohmic Reach where Input Tap 100 Zmin Basic min 0 to N ohmi...

Page 9: ...dy state reach for line angles up to 85 degrees OPERATING TIME The operating time of the MHO unit is determined by a number of factors such as the basic minimum reach setting of the unit fault current magnitude ratio of fault impedance to relay reach and magnitude of relay voltage prior to the fault The curves in Fig 13 are for the condition of rated volts prior to the fault Time curves are given ...

Page 10: ...c Jd RESTRAINT POLARIZING MECHANICAL ADJ Check Points Mh Unit Rotating Shaft End Play Contact Gap Contact Wipe N O Contacts 010 015 inch 030 035 inch 003 005 inch SERVICING The phase shifter phase angle meter method of testing the CEY53A relay Connect the relay per Figure 14 except C to stud 3 D to stud 8 and jumper studs 6 and 7 Directional Tests A 1 Put the reach taps int he 1 5 ohm position 2 S...

Page 11: ...MHO UNIT MAX TOR TEST ANGLES PICKUP AMPS 75 45 and 105 315 and 255 Lag j_ Lead 45 Volts 16 5 18 2 285 Adjust X ll until the pickup amps are equal and in limits As above for both test angles as shown in the chart 5 Recheck the angle of maximum torque as in para 3 above Cross adjust para 3 and 5 until the relay reach and angle of maximum torque is in limits without any further adjustments 6 Connect ...

Page 12: ...test reactor impedance at 75 degrees and 45 degrees respectively will be available for checking the mho unit at the 75 degree and 45 degree positions The mho unit ohmic reach at the zero degree position may be checked by using the calibrated test resistor alone as the line impedance The calibrated test resistor is supplied with a data sheet which gives the exact impedance and angle for each of the...

Page 13: ... upon environment type of relay and the user s experience with periodic testing Until the user has accumulated enough experience to select the test interval best suited to his individual requirements it is suggested that the points listed under INSTALLATION PROCEDURE be checked at an interval of from one to two years CONTACT CLEANING For cleaning relay contacts a flexible burnishing tool should be...

Page 14: ...er signs of physical damage and that all the screws are tight MECHANICAL INSEPCTION 1 Check the mechanical adjustments on page 10 There should not be any noticable friction in the rotating structure of the unit or in the target seal in unit 2 3 Check the location of contact brushes on the cradle and the brushes and the shorting bars on the case blocks according to the internal connections diagram ...

Page 15: ...3 2 n 5 2 r 2 S a O _L 21 3 X co o 2 1 DC 2 I CEY53 A ZONE I MHO UNIT INTERNAL 207A7896 OUTLINE K 6209273 QJ M CQ 3 0 o 3 m rp 7 nJ h rV cn T I o 3 co 4 cn 3 0 2 3 0 2 fD T R T R 0 3 3 rrm o 71 m 8 3 l cn co 4 3 x TR 5 T R 73 qpm rpm rt I I 5 5 CL J r A n POL o P O L POL 3 X W A CO W T OP 3 C r A OT VtffN BOTH CURRENT COILS ARE USED IN SERIES 4S SHOW V MINIMUM REACH IS TWICE NAMEPLATEL VALUE 3 E S...

Page 16: ...H r i o T60 CO 4J t LO r T J r R L_ LU H 4 i 1 _ LU 1 or in NOTE RELAY MAX TORQUE ANGLE AT 60 HZ IS 75 DEG LAG i l co n LU O o n 3 i I i rp 1 4 i i r UJ T CL i L LO CC r 4 i 50 t CO r l u_ 4 tea rr IH O l L _ T j t L lij R V 1 I T n C5 U I n L l L UJ i i F T T QL T M 4 I rr i J 4 t i IT I 410 I I t RELAY DOES NOT OPERATE BELOW 38 HZ Y I i h T i i 1 R i I iT n 3e 4 f i i btder i i i TO mro 20 i i 4...

Page 17: ... T I l i 1 6 i t Nrt T s 14 i X s I I I 1 M 2 Pi i i 6 c x i 1 v m T 1 I v s If g x s T s s v s s V P 81 3 1 J N i i 3 I N 5 m 3 1 l I i i i i 5 N a 1 QJ K 3 3J m N N K O cn S i s f t s L o I 1 I r di 1 if i J i r m itAfi Ti II FIG 5 0227A2334 0 Variation In Reach And Angle Of Maximum Torque VS Frequency 17 Courtesy of NationalSwitchgear com ...

Page 18: ...6 8025039 Cross Section Of Case And Cradle Block Showing Location Of Auxiliary Brush AUTOTRANSFCRMR rr rvyoL 0 10 TYYTV 1 W V 1 SBC M v C OFER ife all r21 r 7 ie APOLAR X11 Cll SI TRANSACTOR PRIMARY 1 M T SI r SI V V V V V V V V V V V V 4 V 4 V V V V V V o o o O 9 7 5 3 1 O o o o o 10 6 8 h 2 SHORT FINGER FIG 7 I0207A7896 0 Internal Connections Diagram For The CEY53A Relay Front View 18 Courtesy o...

Page 19: ...MM O r 5 1 8 7 131MM t 8 3 1 2 211MM f CUTtlUT rj O 0 1 0 3 7 5 263MM 6 9 0671 175MM f 1 4 8 1 2 375MM 7 2 8 1 185MM I t 1 4 6 8 37MM 0 O i o I H 7 1 8 18MM 2 5 0 2 8 4 3 72MM 6MM 5 0 0 1EMM T Y P I C A L 2 1 8 2 1 8 5 2 5 1 5MM 5MM 133MM 5 6 8 7 1 4 4MM 3 4 DRILL 10 HOLES 19MM PANEL PANEL DRILLING FOR SURFACE MOUNTING FRONT VIEW PANEL D R I L L I N G FOR SEMI FLUSH MOUNTING FRONT V I E W 5 1 6 1 ...

Page 20: ...POL POL FIG 9 0227A2544 0 Schematic Connections Of The Mho Unit In The CEY53A Relay IX i i It l Zp 1 ZT TRANSACTOR TRANSFER IMPEDANCE Zr IMPEDANCE BETWEEN RELAY FAULT E PHASE TO PHASE VOLTAGE IZf T xTAPSETTING IN PERCENT v 0 TRANSACTOR ANaE IR 10 0227A2467 1 Graphical Presentation Of Mho Unit Operating Principles FIG 20 Courtesy of NationalSwitchgear com ...

Page 21: ...GEK 7351 FIG 11 0227A2468 0 Steady State Impedance Characteristic Of Mho Unit In The CEY53A Relay 21 Courtesy of NationalSwitchgear com ...

Page 22: ...W 1 X1 TJ t 80 I t X Hi a Sfi X CD i t i t nr T 4 t t T TT 4 t 1 x lip 1 4 14 70 I Ti H 1 M 4 t m q 1 X m i i x id i rr x i 4 S rf U U i r i f I rt LU 1 ri or IT iii iT 4 tx fe 607 rr r u i M ij m im T T i X X TX 444 i rt fi T T 5 S 4 Li t t T ri ni T c 4 HX TI LU rn cc 50 t rrr i ti 4T I00 4 T 50 T 25 4 i Fit t ix 44J r 4 1 H m t tt I i T d XL l xn 4 ii iT X x i XL i QC i 4 m T m U H MO x n 4 fr ...

Page 23: ...NCE ANGLE 85 LAG VOLTAGE BEFORE FAULT 120V 1 5 OHM BASIC MINIMUM REACH IPLY FAULT CURRENT BY 2 FOR OHM MULTIPLY BY 4 T i i FAULT SETTING 85 2 FAULT Z SETTING 50 Z FAULT Z SETTING 25 Z FAIJI T Z SETTING 0 t 4 t H4f H i i H itt i 5 U EC FAULT CURREN AMPERES r 13 0227A2465 0 Operating Time Curves For The CEY53A Relay FIG 23 Courtesy of NationalSwitchgear com ...

Page 24: ...3 D NON INDUCTIVE C LOAD BOX CT t VARI AC 01 02 9 IIOV 55V 15V 0 L METER 0SHIFTER VOLT METER B A FIG 14 0227A8407 0 Test Connections Diagram using Phase Shifter And Phase Angle Meter 24 Courtesy of NationalSwitchgear com ...

Page 25: ...TOR OR CORE B MAGNET 4 COILS f WAVF WASHERS D OCTAGON NUT FOR CORE ADJUSTMENT E FLAT WASHER F CORE HOLD DOWN NUT HEXAGON B r 5 3 t 3 B n iiA V C D E F FIG 15 0208A3583 0 Core Adjustment 25 Courtesy of NationalSwitchgear com ...

Page 26: ...atic Diagram Of The X R Test Equipment rtm ott ro z A crtw ie T rsz r ASG r OV 6 6 dh vwr it 9 __ O O O o 3 5 7 6 a 9 to O o o o o r cr s V cr y 6 s ox rtr r t crtey 3 A JEI Ar 6 9 A qf X r T 17 0227A2545 0 Connections For Testing The CEY53A Relay With X R Equipment FIG 26 Courtesy of NationalSwitchgear com ...

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Page 28: ...å å å å 3RZHU 0DQDJHPHQW 215 Anderson Avenue Markham Ontario Canada L6E 1B3 Tel 905 294 6222 Fax 905 201 2098 www ge com indsys pm Courtesy of NationalSwitchgear com ...